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String hardware
Suspension clamps
Tension clamps and joints
Parallel groove clamps
Arcing devices
Earth wire fittings
Spacers and spacer dampers
Vibration dampers
Helical Wire Fittings
Material for fibre optic lines
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STRING HARDWARE
03
Contents
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
U-bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Suspension hinge with bolt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Suspension hinge with damping straps, for rigid V-strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Strain hinge with bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Universal joint with bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Hinge pull-out safe, with additional washers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Straight shackle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Straight bow shackle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Twisted shackle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Twin ball pin, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Twin ball pin, according to ÖNORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Twin ball pin with arcing device attachment, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Twin ball pin with arcing device attachment, according to ÖNORM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Ball eye, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Ball eye, according to ÖNORM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Ball eye long type, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Oval ball eye , according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Oval ball eye with collar, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Ball eye straight, with arcing device attachment, according to IEC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Ball eye straight, with arcing device attachment, according to ÖNORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Ball eye straight, with arcing device attachment, long type, according to IEC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Ball eye straight, with arcing device attachment, long type, according to ÖNORM . . . . . . . . . . . . . . . . . . . . . . . . 23
Oval ball eye straight, with arcing device attachment, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Ball eye twisted, with arcing device attachment, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Ball eye twisted, with arcing device attachment, according to ÖNORM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball eye twisted, with arcing device attachment, long type, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Ball eye twisted, with arcing device attachment, long type, according to ÖNORM. . . . . . . . . . . . . . . . . . . . . . . . . 26
Oval ball eye twisted, with arcing device attachment, according to IEC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Ball clevis, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Ball clevis with arcing device attachment, straight, according to IEC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Ball clevis with arcing device attachment, twisted, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Socket eye casted, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Socket eye forged, according to IEC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Socket tongue casted, straight, with arcing horn attachment, according to IEC. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Socket tongue forged, straight, with arcing horn attachment, according to IEC. . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Socket tongue forged, straight, with arcing horn attachment, according to ÖNORM . . . . . . . . . . . . . . . . . . . . . . 30
Socket tongue casted, with arcing device attachment, twisted, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Socket tongue forged, with arcing device attachment, twisted, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Socket tongue forged, with arcing device attachment, twisted, according to ÖNORM. . . . . . . . . . . . . . . . . . . . . 32
Socket clevis casted, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Socket clevis forged, according to IEC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Socket clevis casted, with arcing device attachment, twisted, according to IEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Socket clevis casted, straight, with arcing horn attachment, according to IEC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Double eye straight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Double eye twisted, forged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Double eye twisted, �at steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Oval double eye twisted, �at steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Double eye with arcing device attachment, straight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Double eye with arcing device attachment, twisted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Double eye straight, with arcing device attachment, connection twisted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Oval double eye with arcing device attachment, straight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Oval double eye straight, with arcing device attachment, connection twisted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Oval double eye with arcing device attachment, twisted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Double straps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Clevis eye straight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Clevis eye straight, riveted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Clevis eye straight, welded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Clevis eye twisted, forged. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Clevis eye with arcing device attachment, straight, forged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Clevis eye with arcing device attachment, twisted, forged. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Adjustable extension link straight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Adjustable extension link twisted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Sag adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Turnbuckle eye-eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Turnbuckle eye-clevis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Turnbuckle clevis-clevis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Triangular yoke bended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Triangular yoke welded. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Triangular yoke plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Triangular frame yoke with straps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Trapezoidal yoke bended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Trapezoidal yoke welded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Trapezoidal yoke plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Yoke for triple bundle, v-string. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Yoke for triple bundle, i-string . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Yoke for quad bundle, v-string. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Yoke for quad bundle, i-string . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Yoke plate with damping straps, for rigid V-strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Yoke plates, for V-strings, inverse V-strings and Y-strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Triangular yoke with a damping tongue, for suspension strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Frame yoke with a damping tongue, for tension strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Shifting yoke in trapezoidal and triangular form, for tension strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Displacement yoke with damping elements, for tension strings, for all conductor con�gurations . . . . . . . . . . 54
Yoke with hinge for tension strings, for connecting a triple bundle with a double string . . . . . . . . . . . . . . . . . . . 54
3 STRING HARDWARE
03
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
3STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Rotary spacer with damping links, for suspension strings with horizontal twin bundle conductors and for
four bundle conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Flapping yoke for suspension strings, for connecting a triple bundle to a double string . . . . . . . . . . . . . . . . . . . 55
Unhingeable yoke with slots on the side, for suspension strings, for all conductor con�gurations. . . . . . . . . . 55
Yoke with shifting slots, with displacement elements for tension strings, for all conductor con�gurations . 56
General
Material
String hardware offered in this part of the catalogue are made up of fittings connecting insulators with the towers and conductors under mechanical load.
Clevis-eye connections and ball and socket connections are standardized internationally according to the following Standards:
IEC 60120, Dimensions of ball and socket couplings of string insulator unitsÖNORM E 4104, Electrical overhead lines; ball and socket; coupling dimensions (for Ball 16 and 20)ANSI C 29.2 / 52-3 for Ball 16 / 52-5 for Ball 18 / 52-8 for Ball 22IEC 60372, Locking devices for ball and socket couplings of string insulator units - Dimensions and testsIEC 60471 and DIN 48074, Eyes and clevises; connecting dimen-sionsDIN 48073, Connecting bolts for overhead power linesOval eyes and Y connections according to EN 61466, Composite string insulator units for overhead lines with a nominal voltage greater than 1 kV - or specific requirementsDIN 48068, Protective fitting attachment; for overhead lines, connection dimensions
For ball 24, the arcing devices will be fixed with 2 screws M14 at a distance of 32 mm because of the short circuit currents that may occur. Fastening using two screws is also possible according to Swiss
and Italian Standards.
In order to withstand the static as well as dynamic loads acc. to EN 50341, heat treated steels will be used for the string hardware as follows: - steels for quenching and tempering acc. to DIN EN 10083; - structural steels (nitriding steels) for hinges, links and yokes acc.
to DIN EN 10025; - malleable cast acc. to DIN EN 1562 and spheroidal graphite cast
(ductile iron) acc. to DIN EN 1563 for some socket fittings; - For special cases where high dynamic loads may occur at low
temperatures, fittings made of low-temperature (cryogenic)
steels are available.
- Stainless steels are occasionally used in regions with a corrosive atmosphere, e.g. near the sea.
- Screw bolts according to DIN 48073 - Split pins for screw bolts are made of stainless steel. - Security split pins acc. to IEC 60372- Locking devices for ball and
socket couplings of string insulator units, Dimensions and tests for socket fittings - are also made of stainless steel or optionally made of copper and tin-plated.
Security split pin inserted in thesocket eye
Connections for Ball 24 and 28as well as forball couplingsaccording toSwiss Standards
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Double eyes with
anti rotation
protection
Anti rotation
protection on
ball fittings
Shunt for high
short circuit
currents
- All socket fittings are equipped with security split pins
- All fittings made of steel will be hot dip galvanized acc. to
IEC 61284 or EN ISO 1461 - Overhead lines, Requirements and
tests for fittings - unless they are stainless steel. Connecting
elements will be hot dip galvanized acc. to EN ISO 10684 or ASTM 153 - Fasteners, Hot dip galvanized coating).
For projects with an aggressive atmosphere, the minimum zinc thick-
ness of fittings can be increased from 85 μ to 110 μ or 130 μ Microns.
All fitting assemblies supplied have identification marking acc.
to IEC 61284; this includes manufacturers mark and date code, spe-
cified minimum failure load, and one second short circuit current
withstand rating.
Short circuit protection of the string hardware does not only de-
pend on the corresponding cross sections but also on the surface
quality of the connections, including mechanically loaded bolts.
In general, a current density of 70 A/mm2 can be expected. In this
respect, heating will remain below 400°C at an ambient tempera-
ture of 35°C, which is why there will not be any inadmissible loss of
cohesion of the string hardware. As for ball eyes where arcing devices
can be fixed, the stated value will only be applicable if arcing devices
are actually used. For double eyes twisted with
arcing devices installation situation is important.
If the short circuit currents are very high, it will be
possible to provide for by-passing using a shunt.
For this purpose, the fittings concerned will have
connecting eyes with suitable holes. As for hinged
connections established by using screw bolts, the
short circuit value will not only be determined by
the bolt diameter but also by the mechanical load.
Screw Bolt:
- 19 mm: One second short circuit current 40 kA
- 22 mm: One second short circuit current 50 kA
- 25 mm: One second short circuit current 63 kA
Due to their punctiform coupling, U bolts, shackles and oval eyes
have lower short circuit values and are less suitable for high electric
loads.
The short circuit behaviour of insulator strings will be checked acc.
to IEC 61467- Insulators for overhead lines, Insulator strings and sets
for lines with a nominal voltage greater than 1000 V, AC power arc
tests. In this context, it should be noted that a remaining force needs
to be guaranteed after the power arcs. The values stated in the tables
refer to this standard also. If stainless steels are used, a reduced short circuit resistance needs
to be expected.
Anti rotation protection
In case of multi-link insulator strings with porcelain long rod insula-
tors, rotation of individual insulators can lead to faulty positions of
the arcing devices. In order to prevent this, different ball fittings and
double balls are equipped with anti rotation protection.
3STRING HARDWARE
06
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Yokes
The yokes, which serve for spacing multiple strings, will be given
their shape depending on the conductor configuration used. This
configuration can consist of a single conductor, twin bundle, triple
bundle, four bundle, six bundle or eight bundle. As for multiple
strings with two-point fastening on the tower,
maximum displacement due to wind will have
to be considered.
If a low vertical load, which is caused by con-
ductor routing, accompanies wind load, the
displacements can reach 60° and more. In
this respect, the fact that the strings will be
displaced less is the result of the calculation of
conductor displacements having already been
taken into account.
Conductor displacement can be slightly re-
stricted by placing counterweights. However, the arcing devices
and yokes will impede each other. Therefore, it will be necessary to
provide the yoke with a recess or to design the arcing device as to
make sure that it will pass the yoke in the displaced state.
Load transposition
According to EN 50341, Overhead electrical lines exceeding
AC 45 kV - Part 1: General requirements - Common specifications, it
is also required to consider a dynamic load as it will, e.g., occur on
multiple strings if one insulator string breaks.
The remaining strings must be capable of controlling the high dyna-
mic longitudinal and transverse forces.
This load transposition occurs as a pulse-like shock process that
implies violent oscillating movements and is, as a rule, excluded after
about 200 ms. As a result of this load transposition, the bending and
tensile stresses will be increased significantly.
This can lead to the failure of the whole insulator string.
This mainly occurs on multiple strings with porcelain long rod
insulators, which are very sensitive to bending loads. The fact that
the broken string knocks into the intact one can cause this string to
be damaged or to break.
Arcing device
for a big string
displacement
Yoke for a big
string displacement
Theoretical
and actual
string displacement
acc. to Kissling
Rigid V strings with a small angular position, which can also be used
for lightweight angular towers, need anti rotation protection. For this
purpose, there are double eyes with a straight end for porcelain
long rod insulators.
Hot line work
For work using insulated rods, ball eyes, socket eyes and double eyes
with collars can be used to apply the tools. For this purpose, yokes
are provided with additional holes or are given a shape correspon-
ding to the insulated tools.Ball eye for
hot line work
3 STRING HARDWARE
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As for composite insulators, higher longitudinal tensile forces will
be caused by the flexibility of the glass fibre rods. However, the ben-
ding stress can be neglected.
Cap and pin type insulators are less critical. As they are short and
their connections are so flexible, the bending stresses can remain
small. Uncontrolled impact by the broken string can lead to damage
of the insulator sheds. In general, however, this will not cause the
whole string to break.
Design criteria for insulator strings
Calculations and tests have helped to obtain some important rules
for designing multiple insulator strings especially for porcelain long
rod insulators:
- All the partial strings are to be fixed separately.
- The distance of the insulator strings on their live ends is to be
as small as possible. A slight inclination will help to prevent the
insulator strings from knocking one into the other.
- The yokes should be as high as possible. This is no problem
for tension strings. As for suspension strings, the electrical re-
quirements relating to the minimum distance will have to be
considered.
- If there are several shorter insulators, their bending moments will
be smaller. This will have positive effects. For the reasons above,
this measure can be implemented on tension strings more easily.
There are cases where these measures won’t be sufficient so that
additional precautions will have to be taken:
- Additional masses mounted on the insulator string can be used to
decelerate the load transposition process and thus reduce strains
and stresses acting on the insulator. In most cases, these masses
will be mounted on the yoke. In any case, the effect of these addi-
tional masses should be verified.
- Damping elements
These elements are based on the fact that special displacement
elements, which are displaced plastically at load transposition,
will lead to power dissipation. These elements will be mounted on
the hinged connections of the string, primarily in the yoke hinges.
The patented Mosdorfer Damping Systems (patent Müller) are
a special group enabling highly effective reduction of stresses and
strains that are inadmissibly high, the yoke as a whole being the
displacement element.
- This combination of yokes is stiff enough to act as a stable yoke at
normal operation.
- After one string has broken, the yoke as a whole will be displaced.
- Energy consumption is much higher than that of single displace-
ment elements.
- These systems can be used for all possible string configurations
and conductor combinations.
- The yokes being displaced at a rupture are stable enough to with-
stand wind displacements of up to 45° and more without being
damaged.
Displacement yoke
for suspension
strings
Yoke with displace-
ment elements
Triangular
frame yoke
Displacement yoke
for tension strings
3STRING HARDWARE
08
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Computational simulation of load transposition
For a long time, Mosdorfer has used a computational programme
suitable for double tension and suspension strings, including
V-strings, Y-strings and inverse V-strings for all conductor configu-
rations.
It is also possible to quantitatively analyse the
hinged connections in a string (ball and socket
connections or eye-clevis connections).
Furthermore, so-called trapezoidal double
yokes can be integrated in the computational
programme.
The chronological sequence of string
vibration, including data about the respec-
tive tensile stresses or tensions on the intact
insulators, is calculated.
These values will be used to assess how likely
it is that the insulator string would break.
With 1:1 tests, these essentially cheaper calcu-
lations show a good congruence.
Yoke for suspension
strings with an un-
hingeable yoke on
the side
Yoke for tension
strings with a
sliding slot
Chronological
sequence of
tensile force in the
intact string
Chronological
sequence of
elongation in the
intact string
At normal operation, the generation of yokes described here will
establish a stable connection between the insulators. A short time
after the rupture, the rigid-body connection will have disintegrated.
Now the conductors are only connected via the yoke by a compo-
nent that is pliable and strongly expandable and absorbs the shock
in a gentle and resilient manner.
If one string breaks, the yoke will, in the case of suspension
strings, be released from a certain rotation thanks to the technology
of unhinging via side slots. Thus the conductors will only be con-
nected to the intact string by a pliable displacement element.
As for the tension strings, a bolt will move along a slot, one
displacement element being expanded and the other one being
compressed.
After the yoke has largely turned in the direction of the force, the
conductor force will run over the displacement element that is
almost completely expanded.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Chronological
sequence of
elongation based
on a displacement
element (left)
and Chronological
sequence of tensile
force based on
a displacement
element (right)
Example of the
operating line of
the displacement
element
tensile force (kN)
time (ms)
Unhingeable yoke:
Position of the
string after one
partial string
has broken
Simulation for double strings with displacement elements
Provided that the displacement elements are connected in a hinged
manner and are exclusively subjected to tension or pressure, the
characteristic operating curves of the programme can then be the
basis of the analysis.
The ratio between prolongation of elements and displacement force
has a characteristic shape so that it is accessible to mathematical
modelling.
These values will be obtained from static and
dynamic tests. Tests have also been made at
low temperatures.
The following charts show the time dependent
curves for elongation and tensile force and
will then demonstrate the load transposition
process.
3STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Yoke for the
insulating crossarm
Yoke plate of a
V-string with
damping eyes
Inverse V-string
Rigid V-strings are intended for suspension towers and angle towers
with angles of up to 10°. Due to the damping system based on the
suspension hinges and yoke plates with anti rotation protection,
loads with a high horizontal predominance can also be controlled.
Inverse V-strings are fit for load transposition and can thus be equip-
ped with special rigid connecting elements. These strings can also be di-
mensioned by using the computational programmes of MOSDORFER.
As for further information on the topic variety of yokes that are sui-
table for load transposition, please refer to the respective chapters.
For upgrading lines from, e.g., 220 kV to 380 kV, insulating
crossarms will often be used.
The yokes connecting the tension insulators to the post insulators
will have to be specially adapted and will, in any case, have to be
dimensioned separately.
An example can be found in the relevant part of the catalogue.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
U-bolt
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkN version kg
4104.20/30 60 150 75 16 180 2 0,734104.20/33 60 240 120 16 180 2 0,894104.33/1 60 220 110 18 200 2 1,304104.34/1 60 200 100 20 200 2 1,404104.34/13 70 110 90 20 200 1 1,064104.22/9 80 100 90 20 200 1 1,064104.22/81 100 100 90 20 200 1 1,104104.25/3 70 160 80 22 220 2 1,604104.24/3 90 125 100 24 280 1 1,86
Version 1 has six nuts and version 2 has four nuts.
Other dimensions are available upon request.
Suspension hinge with bolt
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 EkN kA 1s kg
4181.00/5 60 90 65 19 19 20 150 32 1,124181.02/S 75 105 65 19 19 20 200 40 1,564181.02/0/S 75 115 65 19 19 20 200 40 1,584181.41/S 75 110 75 25 19 20 200 40 1,704181.12 75 110 75 25 22 20 280 50 2,404181.03 95 125 65 19 19 20 150 30 1,454181.04 95 125 65 19 19 20 200 40 1,844181.19/3 95 130 75 22 22 20 240 50 2,644181.43 95 130 75 25 19 20 200 40 2,334181.14 95 130 75 25 22 20 280 50 2,874181.05 110 145 65 19 19 20 200 40 1,904181.08 130 155 65 19 19 20 160 40 2,204181.07/S 155 185 65 19 19 20 200 40 2,44
Other dimensions are available upon request.
3STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Suspension hinge with damping straps
for rigid V-strings
Rigid V-strings will be used for suspension towers and angle towers with angles
of up to 10°.
Thanks to the damping system based on the suspension hinges and the yoke plate,
loads with a high horizontal predominance can also be controlled.
Strain hinge with bolt
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 EkN kA 1s kg
4180.02/S 70 105 65 19 19 20 200 40 1,514180.04/S 90 125 65 19 19 20 200 40 1,774180.12/S 90 130 75 25 19 20 240 40 2,674180.22 90 130 75 25 22 20 280 50 2,864180.05/S 110 145 65 19 19 20 200 40 2,044180.05/4 110 145 75 22 19 20 230 40 2,304180.13/S 110 150 75 25 19 20 240 40 3,074180.23 110 150 75 25 22 20 280 50 3,274180.06/S 130 165 65 19 19 20 200 40 2,274180.07/S 150 185 65 19 19 20 200 40 2,654180.15/S 150 190 75 25 19 20 240 40 3,964180.08/S 170 205 65 19 19 20 200 40 2,804180.16/S 170 210 75 25 19 20 240 40 4,00
Other dimensions are available upon request.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Universal joint with bolt
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 EkN kA 1s version kg
4170.60 80 20 40 19 19 20 160 40 1 1,154170.60/1 80 22 40 19 19 20 230 40 1 1,184170.75/4 80 24 55 22 19 20 160 40 2 1,204175.09/2 80 24 55 25 19 20 160 40 2 1,304170.73/1 90 20 40 22 22 25 230 40 1 1,464170.72/4/1 90 25 55 22 22 24 320 50 1 1,804175.09/3 90 24 55 25 22 20 320 50 2 1,80
Version 2 is pull-out safe.
Other dimensions are available upon request.
Hinge pull-out safe, with additional washers
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 EkN kA 1s kg
4181.38 100 130 65 19 19 20 200 40 1,844181.39/1 100 120 80 20 19 22 120 40 1,604181.40/1 100 133 80 20 22 22 120 40 2,454181.0087 115 136 80 20 19 22 120 40 2,104181.39 115 136 80 20 19 22 120 40 2,604181.40 115 136 80 20 22 22 120 40 2,674181.0086 115 136 80 20 22 22 200 40 3,154181.42 120 152 80 30 22 32 280 50 6,104181.39/2 195 205 80 20 19 22 120 40 3,00
The articles with D1 = 20/ 30 mm are assembled with a screw instead of a screw bolt.
Other dimensions are available upon request.
3STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Straight shackle
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B Cbolt kN kg
4250.0030 100 24 16 16 120 0,594250.0025 75 24 19 19 180 0,804250.0032 75 24 19 19 240 0,904250.08/5 71 22 20 19 120 0,70
Other dimensions are available upon request.
Straight bow shackle
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B Cbolt kN kg
4250.0026 80 20 16 16 120 0,554250.0029 80 20 16 19 130 0,604250.0028 100 20 19 19 240 0,97
Other dimensions are available upon request.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Twisted shackle
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B Cbolt kN kg
4250.41/1 100 20 20 19 120 0,864250.0036 120 24 24 19 240 1,50
Other dimensions are available upon request.
Twin ball pinaccording to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
Aball eye kN kA 1s kg
4210.02/1 40 16 130 14 0,204210.03/1 49 20 230 22 0,35
Other dimensions are available upon request.
3STRING HARDWARE
16
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Twin ball pinaccording to ÖNORM
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
Aball eye kN kA 1s kg
4210.02/0 27 16 130 14 0,16
Other dimensions are available upon request.
Twin ball pin with arcing device attachment
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A Bball eye kN kA 1s version kg
4210.10/1 82 19 16 130 40 1 0,364210.12/1 138 22 24 320 50 2 1,15
Version 1 has an one-hole arcing device attachment.
Version 2 has a two-hole arcing device attachment, standard hole distance 32 mm for
2 screws M14.
Other hole distances are available upon request.
Models with nozzle upon request.
Other dimensions are available upon
request.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Twin ball pin with arcing device attachment
according to ÖNORM
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A Bball eye kN kA 1s kg
4210.10/0 84 19 16 130 40 0,36
Other dimensions are available upon request.
Ball eyeaccording to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dball eye kN kA 1s kg
4210.15/1 48 13 40 20 11 60 7 0,124210.16/1 62 19 54 24 16 130 14 0,344210A16/11 60 19 54 20 16 130 14 0,354210.17/3 75 19 55 24 20 210 22 0,474210.17/1 80 19 55 30 20 200 22 0,484210.17/2/1 75 19 55 20 20 210 22 0,51
Article L.-Nr. 4210.17/1 is also suitable for U-bolts.
Other dimensions are available upon request.
3STRING HARDWARE
18
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball eyeaccording to ÖNORM
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dball eye kN kA 1s kg
4210.16/2 62 16 56 24 16 130 14 0,33
Other dimensions are available upon request.
Ball eye long type
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dball eye kN kA 1s kg
4210.20/1 75 13 40 20 11 60 7 0,144210.20/2 250 13 40 20 11 60 7 0,294210.21/1 76 19 54 24 16 130 14 0,37
Other dimensions are available upon request.
3 STRING HARDWARE
19
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Oval ball eyeaccording to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s kg
4217.13/1 90 18 61 25 50 16 130 14 0,474217.12/1 110 19 63 25 60 20 200 22 0,67
Other dimensions are available upon request.
Oval ball eye with collar
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D E F G Hball eye kN kA 1s kg
4217.0009 150 18 61 25 50 42 5 42 16 130 14 0,80
For hot line maintenance.
Other dimensions are available upon request.
3STRING HARDWARE
20
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball eye straight, with arcing device attachment
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s version kg
4213.013/1 104 19 55 26 45 16 130 35 1 0,694213.011/1 104 19 55 24 45 16 130 40 1 0,714213.012/1 104 19 55 20 45 16 130 40 1 0,724213.0015 115 19 62 24 45 16 130 50 2 0,904213.023/1 142 19 62 30 56 20 230 40 1 0,854213.024/1 125 19 62 27 56 20 230 45 1 0,854213.021/1 125 19 62 26 56 20 230 45 1 0,904213.02/1 125 19 62 24 56 20 230 50 1 1,014213.022/1 125 19 62 20 56 20 230 40 1 1,034213.035/1 142 19 70 24 69 24 320 50 2 1,484213.032/1 142 22 70 24 69 24 320 50 2 1,62
Version 1 has an one-hole arcing
device attachment.
Version 2 has a two-hole arcing
device attachment, standard hole dis-
tance 32 mm for 2 screws M14.
Version 3 has a two-hole arcing device attachment, standard hole distance 32 mm for
2 screws M12.
Other hole distances are available upon request.
Models with nozzle upon request.
Other dimensions are available upon request.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball eye straight, with arcing device attachment
according to ÖNORM
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s version kg
4213.013/0 104 19 55 26 48 16 130 35 1 0,654213.011/0 104 19 55 24 48 16 130 40 1 0,694213.012/0 104 19 55 20 48 16 130 40 1 0,714213.02/0 129 19 60 24 57 20 230 45 1 0,954213.022/0 129 19 60 20 57 20 230 40 1 0,95
Models with nozzle upon request.
Other dimensions are available upon request.
Ball eye straight, with arcing device attachment, long type
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s kg
4215.011/1 142 19 55 24 85 16 130 40 0,804215.012/1 142 19 55 20 85 16 130 40 0,804215.022/1 175 19 60 20 104 20 230 40 0,904215.021/1 175 19 60 24 104 20 230 45 1,07
Models with nozzle upon request.
Other dimensions are available upon request.
3STRING HARDWARE
22
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball eye straight, with arcing device attachment, long type
according to ÖNORM
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s kg
4215.01/0 142 19 55 30 85 16 130 30 0,684215.011/0 142 19 55 24 85 16 130 40 0,734215.012/0 142 19 55 20 85 16 130 40 0,79
Article L.-Nr. 4215.01/0 is also suitable for U-bolts.
Other dimensions are available upon request.
Oval ball eye straight, with arcing device attachment
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D E Fball eye kN kA 1s kg
4217.50/1 132 16 57 25 50 48 16 130 25 0,634217.51/1 150 19 63 25 60 56 20 230 40 0,934217.51/2 164 19 68 40 60 56 20 185 40 1,10
Other dimensions are available upon request.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball eye twisted, with arcing device attachment
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s version kg
4213.09/0 70 13 40 20 32 11 60 12 1 0,204213.103/1 104 19 55 26 45 16 130 35 1 0,604213.101/1 104 19 55 24 45 16 130 40 1 0,624213.102/1 104 19 55 20 45 16 130 40 1 0,634213.101/2 130 19 62 24 50 16 130 50 3 1,004213.111/2/S 130 19 62 24 58 20 230 50 2 0,904213.111/1 125 19 62 24 56 20 230 50 1 0,974213.112/1 125 19 62 26 56 20 230 45 1 0,974213.113/1 125 19 62 20 56 20 230 40 1 0,974213.124 145 19 70 24 65 24 320 50 1 1,434213.124/1 168 19 70 24 68 24 320 50 2 1,70
Version 1 has an one-hole arcing
device attachment.
Version 2 has a two-hole arcing
device attachment, standard hole dis-
tance 32 mm for 2 screws M14.
Version 3 has a two-hole arcing device attachment, standard hole distance 32 mm for
2 screws M12.
Other hole distances are available upon request.
Models with nozzle upon request.
Other dimensions are available upon request.
3STRING HARDWARE
24
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball eye twisted, with arcing device attachment
according to ÖNORM
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s version kg
4213.103/0 110 19 55 26 48 16 130 35 1 0,644213.101/0 110 19 55 24 48 16 130 35 1 0,684213.102/0 110 19 55 20 48 16 130 40 1 0,694213.111/0 127 19 62 24 56 20 230 40 1 0,984213.113/0 127 19 62 20 56 20 230 40 1 0,98
Models with nozzle upon request.
Other dimensions are available upon request.
Ball eye twisted, with arcing device attachment, long type
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s kg
4215.102/1 147 19 55 20 85 16 130 40 0,804215.111/1 175 19 63 24 104 20 230 40 1,08
Other dimensions are available upon request.
3 STRING HARDWARE
25
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball eye twisted, with arcing device attachment, long type
according to ÖNORM
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 Eball eye kN kA 1s kg
4215.102/0 147 19 55 20 17 85 16 130 30 0,72
Other dimensions are available upon request.
Oval ball eye twisted, with arcing device attachment
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D E Fball eye kN kA 1s kg
4217.40/1 132 16 57 25 50 48 16 130 25 0,594217.41/1 160 18 61 25 60 57 20 230 35 0,93
Other dimensions are available upon request.
3STRING HARDWARE
26
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball clevisaccording to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B Cball eye bolt kN kA 1s kg
4217.23/1 65 20 38 16 19 130 14 0,524217.20/1 65 20 38 16 16 130 14 0,564217.27/1 85 24 50 20 19 230 22 1,004217.0030 95 24 95 24 19 240 32 1,60
Other dimensions are available upon request.
Ball clevis with arcing device attachment, straight
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C Eball eye bolt kN kA 1s kg
4217.30/1 115 20 50 45 16 19 130 30 1,084217.29/1 135 20 50 56 20 19 230 40 1,38
Other dimensions are available upon request.
3 STRING HARDWARE
27
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Ball clevis with arcing device attachment, twisted
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C Eball eye bolt kN kA 1s kg
4217.0024 125 23 56 45 16 19 130 40 1,554217.32/1 125 23 56 45 16 22 130 50 1,624217.29/3 135 24 56 56 20 19 230 40 1,304217.33/1 135 23 56 55 20 22 230 50 1,704217.0045 150 24 56 69 24 22 320 50 2,10
The arcing device attachment has a standard hole distance of 32 mm for 2 screws M12.
Other hole distances are available upon request.
Other dimensions are available upon request.
Socket eye casted
according to IEC
material: malleable or ductile iron, hot dip galvanised
dimensions in mmL.-Nr.
A B C Dball eye kN kA 1s kg
4220.08/1 71 19 50 20 16 130 14 0,834220.11/2 75 19 62 20 20 210 22 1,33
Other dimensions are available upon request.
3STRING HARDWARE
28
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Socket eye forged
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dball eye kN kA 1s kg
4220.02/1 71 19 45 20 16 130 14 0,694220.021/1 71 19 45 18 16 130 14 0,724220.11/1 85 19 55 20 20 230 22 1,224220.111/1 85 19 55 24 20 230 22 1,304220.12/2 100 19 70 24 24 320 32 2,30
Other dimensions are available upon request.
Socket tongue casted, straight, with arcing horn attachment
according to IEC
material: malleable or ductile iron, hot dip galvanised
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s version kg
4220.206/1 106 19 50 20 51 16 130 30 1 0,974220.216/1 135 19 62 20 66 20 210 40 1 1,70
Other dimensions are available upon request.
3 STRING HARDWARE
29
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Socket tongue forged, straight, with arcing horn attachment
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s version kg
4220.20/1 120 19 56 20 63 16 130 40 1 1,074220.201/1 120 19 56 24 63 16 130 40 1 1,064220.21/1 135 19 62 24 66 20 230 50 1 1,614220.211/1 135 19 62 20 66 20 230 40 1 1,634220.23/1 161 22 70 27 73 24 320 50 2 2,974220.26/1 161 19 70 24 73 24 300 50 2 2,954220.53/3 220 24 80 34 115 32 550 50 2 6,50
Version 1 has
an one-hole
arcing device
attachment.
Version 2 has a
two-hole arcing
device attachment, standard hole distance 32 mm for 2 screws M14.
Other hole distances are available upon request.
Other dimensions are available upon request.
Socket tongue forged, straight, with arcing horn attachment
according to ÖNORM
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s version kg
4220.20/0 120 19 56 20 63 16 130 40 1 1,00
Other dimensions are available upon request.
3STRING HARDWARE
30
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Socket tongue casted, with arcing device attachment, twisted
according to IEC
material: malleable or ductile iron, hot dip galvanised
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s version kg
4220.301/2 128 19 50 20 71 16 130 30 1 1,154220.301/4 130 19 64 24 75 16 160 50 3 1,404220.301/5 135 19 64 20 80 16 160 40 3 1,404220.316/1 145 19 62 20 76 20 210 40 1 1,78
Version 1 has an one-hole arcing device attachment.
Version 3 has a two-hole arcing device attachment, standard hole distance 32 mm for
2 screws M12.
Other hole distances are available upon request.
Other dimensions are available upon request.
Socket tongue forged, with arcing device attachment, twisted
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 Eball eye kN kA 1s version kg
4220.30/1 128 19 56 24 17 71 16 130 40 1 1,114220.301/1 128 19 56 20 17 71 16 130 40 1 1,114220.31/1 145 19 62 24 17 76 20 230 50 1 1,664220.311/1 145 19 62 20 17 76 20 230 40 1 1,714220.36 162 19 70 24 17 87 24 320 50 1 2,834220.36/1 188 19 70 24 15 100 24 320 50 2 3,03
Version 1 has an one-hole arcing device attachment.
Version 2 has a two-hole arcing device attachment,
standard hole distance 32 mm for 2 screws M14.
Other hole distances are available upon request.
Other dimensions are available upon request.
3 STRING HARDWARE
31
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Socket tongue forged, with arcing device attachment, twisted
according to ÖNORM
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Eball eye kN kA 1s version kg
4220.30/0 128 19 55 20 71 16 130 30 1 1,024220.311/0 145 19 62 20 76 20 230 40 1 1,50
Other dimensions are available upon request.
Socket clevis casted
according to IEC
material: malleable or ductile iron, hot dip galvanised
dimensions in mmL.-Nr.
A B Cball eye bolt kN kA 1s kg
4225.13/2 60 20 50 16 19 130 14 1,044225.140/1 80 20 60 20 19 230 22 1,924225.40 100 20 70 24 22 300 32 3,12
Other dimensions are available upon request.
3STRING HARDWARE
32
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Socket clevis forged
according to IEC
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B Cball eye bolt kN kA 1s kg
4225.13/3 65 20 50 16 19 130 14 1,204225.140/2 80 20 56 20 19 210 22 1,50
Other dimensions are available upon request.
Socket clevis casted, with arcing device attachment, twisted
according to IEC
material: malleable or ductile iron, hot dip galvanised
dimensions in mmL.-Nr.
A B C Eball eye bolt kN kA 1s version kg
4225.0001 135 20 50 55 16 19 130 30 1 1,724225.15/1 135 20 60 60 20 19 210 40 1 2,30
Other dimensions are available upon request.
3 STRING HARDWARE
33
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Socket clevis casted, straight, with arcing horn attachment
according to IEC
material: malleable or ductile iron, hot dip galvanised
dimensions in mmL.-Nr.
A B C Eball eye bolt kN kA 1s version kg
4225.0009 130 20 60 55 20 19 130 40 1 2,004225.15/2 135 20 60 60 20 19 210 40 1 2,304225.15/3 140 23 60 60 20 22 230 50 1 2,70
Other dimensions are available upon request.
Double eye straight
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkN kA 1s kg
4260.01 50 13 40 22 60 10 0,294260.04 70 19 50 20 240 35 0,774260.05/9 75 19 60 24 300 45 1,044260.05/7 80 19 60 20 240 40 1,034260.04/1 100 19 50 20 240 35 0,974260.22/2 100 24 80 30 480 70 2,404260.15 150 19 60 24 300 45 1,704260.04/14 200 19 50 20 240 35 1,694260.05/13 200 19 60 20 240 40 2,104260.01/9 300 19 50 20 240 35 2,394260.16 300 19 60 24 300 45 2,95
Other dimensions are available upon request.
3STRING HARDWARE
34
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Double eye twisted, forged
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2kN kA 1s kg
4261.08/10 70 19 50 20 20 200 30 0,634261.08 80 19 55 20 20 200 40 0,834261.10/1 90 19 60 20 24 240 40 0,894261.11 90 19 60 24 24 280 40 0,884261.12 100 19 65 24 24 320 50 1,174261.12/1 100 19 65 27 27 340 50 0,954261.17 110 22 70 30 30 420 50 1,554261.0047 140 20 90 34 34 600 70 3,204261.18 140 24 80 34 34 640 70 3,20
Other dimensions are available upon request.
Double eye twisted, �at steel
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2kN kA 1s kg
4261.65/2 120 19 50 20 20 240 35 1,104261.65/4 150 19 50 20 20 240 35 1,204261.71/3 150 19 60 24 24 320 45 2,004261.65/6 200 19 50 20 20 240 35 1,604261.66/3 200 19 50 20 20 160 35 1,804261.66/4 200 19 50 24 24 160 32 1,704261.41 210 20 70 30 30 500 50 2,924261.46/1 250 19 60 20 20 260 40 2,604261.71/2 250 19 60 24 24 320 45 2,804261.67/1 250 24 90 34 34 630 50 6,104261.0010 300 19 60 24 24 320 45 3,15
Other dimensions are available upon request.
3 STRING HARDWARE
35
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Oval double eye twisted, �at steel
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 EkN kA 1s kg
4261.45/1 125 19 50 20 28 50 240 30 1,004261.45 125 19 50 24 28 50 240 30 0,974261.44/2 150 15 50 20 22 45 200 28 1,004261.64/1 215 25 80 30 38 90 480 70 4,704261.67/3 215 24 90 34 38 90 640 70 5,60
Other dimensions are available upon request.
Double eye with arcing device attachment, straight
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 EkN kA 1s kg
4261.50 106 19 50 20 20 53 240 40 0,824261.51/10 120 19 55 20 20 60 240 40 1,064261.51/10/1 120 19 55 20 24 60 240 40 1,004261.51/0 120 19 60 24 24 60 300 45 1,044261.52/3 132 19 65 20 24 66 240 50 1,294261.52 132 19 65 24 24 66 320 50 1,304261.52/1 132 19 65 24 27 66 320 50 1,19
Articles with an anti rotation protection are available upon request.
Other dimensions are available upon request.
3STRING HARDWARE
36
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Double eye with arcing device attachment, twisted
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 EkN kA 1s kg
4261.30 106 19 50 20 20 53 200 30 0,814261.31/10 120 19 55 20 20 60 240 40 1,074261.31/10/1 120 19 55 20 24 60 240 40 1,044261.31/0 120 19 60 24 24 60 300 40 1,154261.34/4 132 19 65 24 20 66 240 50 1,274261.34/1 132 19 65 24 24 66 320 50 1,264261.34/3 132 24 65 24 27 66 320 50 1,424261.34/10 132 24 65 27 27 66 320 50 1,404261.34/20 144 24 65 27 27 72 380 63 1,73
Articles with an anti rotation protection are available upon request.
Other dimensions are available upon request.
Double eye straight, with arcing device attachment, connection twisted
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 EkN kA 1s kg
4261.40/1 106 19 50 20 20 53 200 30 0,784261.40/3 120 19 55 20 20 60 240 40 1,024261.40/2 120 19 60 24 24 60 300 40 1,074261.40/4 132 19 65 24 24 66 320 50 1,29
Articles with an anti rotation protection are available upon request.
Other dimensions are available upon request.
3 STRING HARDWARE
37
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Oval double eye with arcing device attachment, straight
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 E FkN kA 1s kg
4261.57/1 140 19 50 20 25 50 53 130 25 0,91
Other dimensions are available upon request.
Oval double eye straight, with arcing device attachment, connection twisted
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 E FkN kA 1s kg
4261.56/1 140 19 50 20 25 50 53 130 25 0,84
Other dimensions are available upon request.
Oval double eye with arcing device attachment, twisted
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 E FkN kA 1s kg
4261.55/1 140 19 50 20 25 50 53 130 25 0,90
Other dimensions are available upon request.
3STRING HARDWARE
38
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Double straps
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C Ebolt 1 bolt 2 kN kA 1s kg
4263.10 70 20 40 6 19 19 75 15 0,664263.11/1 70 20 40 8 19 19 100 20 0,824263.12 70 20 50 8 19 19 200 32 1,004263.38 70 20 60 8 19 19 210 40 1,234263.17/1 80 20 60 10 22 22 320 50 1,644263.17 80 24 60 10 22 22 320 50 1,734263.10/1 90 20 40 6 19 19 75 15 0,794263.12/1 90 20 50 8 19 19 200 32 1,174263.38/5 100 20 60 8 19 19 210 40 1,404263.32 100 20 60 8 22 22 280 40 1,614263.31 100 20 70 10 28 28 420 50 2,604263.31/1 100 26 70 10 28 28 420 50 2,704263.37/4 105 24 80 12 28 28 460 63 3,554263.12/19 150 20 50 8 19 19 200 32 1,804263.11 200 20 40 8 19 19 100 20 1,50
Welded models are available upon request.
Other dimensions are available upon request.
Clevis eye straight
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Ebolt kN kA 1s kg
4265.01 75 20 40 20 12 19 75 15 0,524265.01/1 100 20 40 20 12 19 75 15 0,654265.02/1 100 20 40 20 19 19 100 20 0,924265.03/1/0 100 20 50 20 19 19 160 32 1,104265.04/30 100 20 60 20 19 19 240 40 1,304265.04/33/30 100 20 60 20 19 19 240 40 1,304265.04/66/2 100 20 70 24 16 22 320 50 1,704265.04/200 100 24 60 24 19 22 280 40 2,604265.04/33/14 125 20 60 20 19 19 240 40 1,454265.07/18 125 24 70 27 20 25 310 63 2,504265.09/11 125 26 70 30 24 28 410 50 3,304265.01/3 150 20 40 20 12 19 75 15 0,904265.02/3 150 20 40 20 19 19 100 20 1,074265.03/3/0 150 20 50 20 19 19 160 32 1,404265.04/31 150 20 60 20 19 19 240 40 1,604265.04/66/16 150 20 70 24 16 22 320 50 1,904265.04/202 150 24 60 24 19 22 280 40 2,604265.07/20 150 24 70 27 20 25 310 63 2,704265.09/12 150 26 70 30 24 28 410 50 3,204265.02/6 200 20 40 20 19 19 100 20 1,304265.03/31/6 200 20 50 20 19 19 160 32 1,704265.04/32 200 20 60 20 19 19 240 40 2,00
3 STRING HARDWARE
39
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Ebolt kN kA 1s kg
4265.04/66/1 200 20 70 24 16 22 320 50 2,604265.07/28 200 24 70 27 20 25 310 63 3,204265.03/31/0 250 20 50 20 19 19 160 32 1,964265.04/204 250 24 60 24 19 22 280 40 2,604265.07/22 250 24 70 27 20 25 310 63 3,704265.09/13 250 26 70 30 24 28 410 50 4,904265.02/8 300 20 40 20 19 19 100 20 1,844265.04/33/4 300 20 60 20 19 19 240 40 2,904265.04/33/11 400 20 60 20 19 19 240 40 3,564265.02/17 500 20 40 20 19 19 100 20 2,504265.04/35 500 20 60 20 19 19 240 40 4,304265.04/66/9 500 20 70 24 16 22 320 50 4,504265.09/15 500 26 70 30 24 28 410 50 8,20
The delivery of clevis eyes with a different orientation is possible upon request.
Other dimensions are available upon request.
Clevis eye straight, riveted
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Ebolt kN kA 1s kg
4265.01/9/20 75 20 40 22 13 13 55 14 0,504265.9002 100 20 50 20 19 19 200 32 1,104265.9022 100 20 60 24 19 22 280 40 1,304265.04/660 100 20 70 24 19 22 320 50 1,574265.07/51 100 26 70 27 24 25 380 50 1,504265.9036 150 20 60 24 19 22 280 40 1,704265.07/53 150 26 70 27 24 25 380 50 2,304265.9012 200 20 50 20 19 19 200 32 1,804265.9025 200 20 60 24 19 22 280 40 2,104265.04/663 200 20 70 24 19 22 320 50 2,304265.07/55 200 26 70 27 24 25 380 50 3,104265.9030 250 20 50 20 19 19 200 32 2,104265.9026 250 20 60 24 19 22 280 40 2,304265.9014 300 20 50 20 19 19 200 32 2,304265.9028 300 20 60 24 19 22 280 40 2,604265.04/665 300 20 70 24 19 22 320 50 3,334265.07/57 400 26 70 27 24 25 380 50 5,30
The delivery of clevis eyes with a different orientation is possible upon request.
Other dimensions are available upon request.
3STRING HARDWARE
40
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Clevis eye straight, welded
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Ebolt kN kA 1s kg
4265.01/9/31/1 100 14 40 14 13 13 55 13 0,534265.501 100 20 50 20 19 19 200 32 1,104265.04/41 100 20 60 20 19 19 240 40 1,284265.04/61 100 20 70 24 19 22 280 50 1,704265.502 125 20 50 20 19 19 200 32 1,324265.04/42 125 20 60 20 19 19 240 40 1,494265.04/62 125 20 70 24 19 22 280 50 1,624265.503 150 20 50 20 19 19 200 32 1,474265.04/43 150 20 60 20 19 19 240 40 1,654265.04/63 150 20 70 24 19 22 280 50 1,804265.508 200 20 50 20 19 19 200 32 1,704265.04/47 200 20 60 20 19 19 240 40 2,014265.04/66 200 20 70 24 19 22 280 50 2,494265.504 250 20 50 20 19 19 200 32 2,054265.04/47/2 250 20 60 20 19 19 240 40 2,414265.04/67 250 20 70 24 19 22 280 50 2,904265.505 300 20 50 20 19 19 200 32 2,414265.04/44 300 20 60 20 19 19 240 40 2,804265.04/5 300 20 70 24 19 22 280 50 3,40
The delivery of clevis eyes with a different orientation is possible upon request.
Other dimensions are available upon request.
Clevis eye twisted, forged
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dbolt kN kA 1s kg
4265.74/10 90 20 16 18 16 120 25 0,734265.73 90 20 19 20 19 240 32 1,144265.76/6 100 20 19 20 19 200 40 1,664265.76/8 100 26 19 20 19 210 40 1,714265.0012 100 26 19 20 22 240 40 1,504265.76/1 100 20 19 24 22 320 40 1,694265.76/20 100 26 19 24 22 320 50 1,90
Other dimensions are available upon request.
3 STRING HARDWARE
41
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Clevis eye with arcing device attachment, straight, forged
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Ebolt kN kA 1s kg
4265.0082 145 20 19 20 66 19 240 40 1,944265.0013 145 20 19 24 66 22 320 50 1,904265.0086 145 20 19 20 66 22 240 50 2,00
Other dimensions are available upon request.
Clevis eye with arcing device attachment, twisted, forged
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C D Ebolt kN kA 1s kg
4265.0087 145 20 19 24 66 22 320 50 1,904265.0100 145 20 24 27 66 22 330 50 2,10
Other dimensions are available upon request.
3STRING HARDWARE
42
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Adjustable extension link straight
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dbolt kN kA 1s kg
4266.10/3 235 - 340 20 19 20 19 160 32 2,954266.09 246 - 346 20 19 24 22 320 44 4,174266.30 265 - 405 20 19 20 19 160 32 3,174266.30/2 265 - 405 20 19 24 19 160 32 3,204266.59 290 - 430 20 19 20 19 240 40 4,204266.09/1 300 - 450 20 19 24 22 300 44 4,984266.53 309 - 441 20 19 24 22 230 40 4,504266.53/3 310 - 490 20 19 20 19 240 40 4,534266.09/2 470 - 790 20 19 24 22 320 45 7,404266.34/1 490 - 840 20 19 20 19 160 32 5,824266.51/4 550 - 770 20 19 20 19 240 40 6,804266.51/9 550 - 770 20 19 22 19 240 40 6,704266.51/8 550 - 770 20 19 24 19 240 40 6,704266.51/1 550 - 770 20 19 24 22 230 40 6,704266.51/7 550 - 770 20 19 26 22 230 40 6,704266.51 550 - 770 20 19 29 22 230 40 6,744266.51/3 550 - 770 20 19 29 19 240 40 6,804266.51/5 550 - 770 20 19 32 19 240 40 6,80
Other dimensions are available upon request.
Adjustable extension link twisted
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dbolt kN kA 1s kg
4267.31/3 350 - 500 20 19 20 19 200 32 3,964267.31 350 - 500 20 19 21 19 160 32 3,964267.313 350 - 500 20 19 24 19 160 32 4,004267.312 350 - 500 20 19 25 19 160 32 3,944267.314 350 - 500 20 19 27 19 120 28 3,944267.62/1 410 - 555 20 19 24 22 230 40 5,324267.62 410 - 555 20 19 26 22 230 40 5,404267.33/2 480 - 720 20 19 20 19 160 32 5,264267.35/1 550 - 770 20 19 20 19 160 32 5,764267.50/1 550 - 770 20 19 24 22 230 40 7,024267.50/4 550 - 770 20 19 26 22 230 40 6,784267.35 550 - 770 20 19 29 19 120 25 5,704267.50 550 - 770 20 19 29 22 230 40 6,85
Other dimensions are available upon request.
3 STRING HARDWARE
43
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Sag adjuster
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dbolt kN kA 1s kg
4266.61/6/1 209 - 508 20 19 20 19 160 40 9,844266.61/5 209 - 508 20 19 20 19 210 40 12,404266.61/3 209 - 508 20 19 24 22 210 40 12,104266.61/4 209 - 508 24 19 24 22 320 50 13,00
These sag adjusters enable balanced re-adjustment.
Other dimensions are available upon request.
Turnbuckle eye-eye
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dthread kN kA 1s kg
4268.32 300 - 420 19 50 20 M20 160 18 1,904268.51/R 370 - 550 19 50 20 M20 180 15 2,434268.53/R 600 - 800 19 50 20 M20 180 15 3,374268.02/10 380 - 505 19 55 20 M24 240 25 2,984268.02 380 - 505 19 55 24 M24 240 25 2,954268.02/2 560 - 810 19 55 20 M24 240 25 4,554268.03/1 410 - 545 19 60 20 M27 240 35 4,264268.03 410 - 545 19 60 24 M27 280 35 4,554268.03/3 540 - 790 19 60 24 M27 280 35 5,804268.50 460 - 630 19 60 20 TR30 240 40 4,994268.50/1 460 - 630 19 60 24 TR30 320 40 4,93
The screws of the turnbuckles are locked by security split pins. To show the full (maximum) extent
of the screw length coloured marking is visible. Turnbuckles must not be subjected to a bending
load.
Other types are available upon request.
3STRING HARDWARE
44
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Turnbuckle eye-clevis
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B C Dthread bolt kN kA 1s kg
4268.10 350 - 470 20 19 20 M20 19 160 15 2,584268.14 540 - 790 20 19 20 M20 19 185 18 3,884268.11/10/1 405 - 530 20 19 20 M24 19 240 22 3,484268.11 410 - 535 20 19 24 M24 22 240 25 3,794268.11/2 560 - 810 20 19 20 M24 19 240 25 4,904268.13/2/S 440 - 575 20 19 24 M27 22 280 35 5,034268.12/2 565 - 815 20 19 24 M27 22 280 35 6,414268.46/2 470 - 640 20 19 20 M30 19 240 40 5,604268.46/1 470 - 640 20 19 24 M30 22 320 40 5,714268.52/5 470 - 640 20 19 20 TR30 19 240 40 5,904268.52 470 - 640 20 19 24 TR30 22 320 40 6,654268.52/2 450 - 600 20 19 20 TR32 19 230 40 7,304268.52/1 450 - 600 20 19 24 TR32 22 300 50 7,60
The screws of the turnbuckles are locked by security split pins. To show the full (maximum) extent
of the screw length coloured marking is visible. Turnbuckles must not be subjected to a bending
load.
Other types are available upon request.
Turnbuckle clevis-clevis
material: steel, forged, hot dip galvanized
dimensions in mmL.-Nr.
A B Cthread bolt kN kA 1s kg
4268.20 400 - 520 20 50 M20 19 160 18 3,284268.20/1 500 - 710 20 50 M20 19 160 18 3,784268.21/1 430 - 555 20 50 M24 19 240 25 4,024268.21/2 560 - 810 20 50 M24 19 240 25 5,404268.21/4 900 - 1500 20 50 M24 19 210 25 8,064268.22 470 - 605 20 56 M27 22 280 35 5,764268.22/1 590 - 840 20 56 M27 22 280 35 7,104268.52/6 480 - 650 20 56 TR30 22 320 40 6,904268.0002 460-610 20 56 TR32 22 300 50 7,50
The screws of the turnbuckles are locked by security split pins. To show the full (maximum) extent
of the screw length coloured marking is visible. Turnbuckles must not be subjected to a bending
load.
Other types are available upon request.
3 STRING HARDWARE
45
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Triangular yoke bended
material: steel, hot dip galvanized
dimensions in mm
D1 D2L.-Nr.A B C
bolt bolt
kN kA 1s kg
4270.02/1 280 50 20 19 19 70 16 1,724274.05 400 42 20 19 19 160 25 4,104274.10 400 42 20 19 19 200 40 5,644274.10/2 400 37 20 22 22 250 30 5,554270.19/3 400 60 20 22 22 280 50 8,154270.19/1 400 60 20 19 22 320 50 7,404270.27/1 450 68 20 19 19 210 40 6,884270.26 450 68 20 22 22 280 50 8,304270.25/1 450 68 20 19 22 320 50 8,804274.15 500 66 20 19 19 150 32 5,974274.20/2 500 61 20 22 22 230 50 7,504270.30/1 600 90 20 19 19 230 40 9,70
Additional holes for attaching arcing devices and for applying tools in case of hot line work are
possible.
Other types are available upon request.
Triangular yoke welded
material: steel, hot dip galvanized
dimensions in mm
D1 D2L.-Nr.A B C
bolt bolt
kN kA 1s kg
4270.03/12 330 47 20 19 19 120 32 3,004270.17/18 400 80 20 19 19 160 40 5,304270.17/11 400 70 20 19 19 160 40 5,404270.17/13 400 110 20 19 19 160 40 6,304270.17/16 400 80 20 19 19 200 40 6,404270.19/13 400 70 20 19 19 240 40 7,704270.0033 450 70 20 19 19 210 40 5,504270.24/4 500 80 20 19 19 200 40 7,804270.24/10 500 100 20 19 19 200 40 8,30
Additional holes for attaching arcing devices and for applying tools in case of hot line work are
possible.
Other types are available upon request.
3STRING HARDWARE
46
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Triangular yoke plate
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2kN kA 1s kg
4276.0165 300 50 19 20 20 120 40 4,004276.0130 330 50 19 20 20 120 40 4,304276.0146 330 80 19 20 20 200 40 5,104276.0066 400 60 19 18 18 120 25 4,804276.0359 400 75 19 18 18 160 40 4,404276.05/1 400 100 19 20 20 200 40 5,804276.05/4 400 100 19 24 24 230 50 7,704276.0134 400 100 19 20 20 240 40 5,804276.07/7 400 100 19 20 24 320 40 6,504276.05/3 400 100 20 24 30 460 50 8,504276.0055 450 100 19 20 20 240 40 7,304276.06/3 450 100 19 20 20 240 40 7,804276.06/27 450 100 19 20 24 240 40 7,804276.0088 450 100 19 20 24 300 40 7,504276.0084 450 100 19 20 24 320 40 7,604276.06/8/1 450 100 19 20 24 340 50 7,754276.0393 450 100 19 24 24 340 50 8,204276.06/2 450 100 22 20 30 420 40 9,754276.06/17 457 100 19 20 20 120 40 6,654276.06/6 457 100 19 20 20 120 40 8,004276.06/20 457 100 16 20 20 160 40 6,704276.06/4 457 100 19 20 20 180 40 8,004270.0049 457 100 19 20 20 240 40 8,004276.0256 457 100 19 20 24 320 40 6,804276.09/11/1 500 100 16 20 18 120 40 7,504276.09/11 500 130 19 20 24 120 40 9,104276.09/5/1 500 100 19 18 20 160 40 6,604276.0039 500 100 19 20 20 240 40 8,604276.0085 500 120 19 20 24 280 50 9,204276.09/20 500 100 19 24 24 320 50 8,504276.0097 500 100 22 20 27 360 40 10,304276.09/13 500 100 20 24 34 420 50 10,604276.0136 600 120 19 20 24 320 40 11,504276.0198 600 120 20 24 30 460 50 13,30
Additional holes for attaching arcing devices and for applying tools in case of hot line work are
possible.
Other types are available upon request.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Triangular frame yoke with straps
material: steel, hot dip galvanized
dimensions in mm
D1 D2L.-Nr.A C B1 B2
bolt bolt
kN kA 1s kg
4280.08/6 400 500 20 20 19 19 240 40 13,404280.0021 400 500 20 20 22 22 240 40 13,904280.08/1 400 600 20 20 19 19 200 32 12,354280.08/2 400 700 20 20 19 19 240 40 16,104280.0017 400 1000 20 20 19 19 240 40 20,304280.08/7 400 1000 20 20 22 22 240 40 20,604280.13/2 500 600 20 20 19 19 200 30 13,204280.13/4 500 600 20 20 19 19 240 40 17,504280.0003 500 600 20 26 22 28 450 40 18,004280.13/6 500 700 20 20 19 19 240 40 16,904280.13/7 500 700 20 20 19 22 320 40 17,104280.20/4 500 700 20 26 19 27 350 40 17,004280.20/3 500 700 20 26 22 27 450 40 20,504280.15 600 700 20 26 19 27 350 40 18,004280.0044 600 700 20 26 22 32 530 50 23,504280.0014 600 700 20 26 22 32 530 50 30,504280.18 600 1000 20 22 22 25 340 40 26,50
Additional holes for attaching arcing devices and for applying tools in case of hot line work are
possible.
Other types are available upon request.
Trapezoidal yoke bended
material: steel, hot dip galvanized
dimensions in mm
D1 D2L.-Nr.A B C
bolt boltE
kN kA 1s kg
4275.10 400 60 20 19 19 100 200 40 6,054275.18/3 400 60 20 19 19 200 240 40 6,734275.14/2 500 60 20 22 22 100 240 50 8,004275.12/2 500 60 20 22 22 200 240 50 7,804275.20/3 500 60 20 19 19 400 240 40 8,004275.19/7 600 60 20 19 19 400 240 40 9,50
Additional holes for attaching arcing devices and for applying tools in case of hot line work are
possible.
Other types are available upon request.
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Trapezoidal yoke welded
material: steel, hot dip galvanized
dimensions in mm
D1 D2L.-Nr.A B C
bolt boltE
kN kA 1s kg
4275.18/1/5 400 75 20 19 19 200 240 40 6,414275.0043 400 70 20 19 19 400 320 40 5,704275.20/11 500 60 20 19 19 400 240 40 7,194275.20/13 500 90 20 19 19 400 240 40 7,404275.20/2 500 80 20 22 22 400 360 50 8,904275.19/13 600 90 20 19 19 400 240 40 9,15
Additional holes for attaching arcing devices and for applying tools in case of hot line work are
possible.
Other types are available upon request.
Trapezoidal yoke plate
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2 EkN kA 1s kg
4276.24/8 300 80 19 20 20 200 320 40 5,104276.24/10 400 100 19 20 20 300 320 40 6,974276.0008 500 60 19 20 20 300 160 40 8,004276.24/7 500 80 19 20 20 400 320 40 8,504276.24/21 500 80 19 24 20 450 460 50 8,904276.0242 500 80 19 24 24 450 640 50 9,304276.0195 600 80 19 20 20 450 420 40 9,704275.0054 600 100 19 20 20 457 320 40 13,20
Additional holes for attaching arcing devices and for applying tools in case of hot line work are
possible.
Other types are available upon request.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Yoke for triple bundle
v-string
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2kN kA 1s kg
4276.29 340 400 19 20 18 210 40 11,704276.29/4 400 400 16 20 18 210 40 8,504276.0133 405 450 19 20 20 160 40 11,904276.31/7 480 457 19 20 20 210 40 13,904276.35 500 500 19 20 18 320 40 0,004276.35/1 513 500 19 20 18 320 40 18,80
Additional holes for attaching arcing devices and for applying tools in case of hot line work are
possible.
Other types are available upon request.
Yoke for triple bundle
i-string
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
B C D1 D2kN kA 1s kg
4276.29/5 400 16 20 18 120 40 7,604276.31/10 450 19 20 20 210 40 10,604276.33/3 457 19 20 18 160 40 9,504276.35/6 500 19 20 18 210 40 11,90
Additional holes for attaching arcing devices and for applying tools in case of hot line work are
possible.
Other types are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Yoke for quad bundle
v-string
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D1 D2kN kA 1s kg
4276.32/11 330 400 19 24 20 360 50 16,104276.32/23 400 400 16 24 18 160 50 13,604276.0048 400 450 16 20 18 120 40 13,004276.32/18 450 450 19 20 20 160 40 18,704276.0219 450 450 16 24 18 180 50 16,204276.32/21 400 457 19 22 18 160 40 14,204276.32/8 457 457 19 20 20 240 40 20,50
Additional holes for attaching arcing devices and for applying tools in case
of hot line work are possible.
Recesses for applying tools in case of hot line work are possible.
Other types are available upon request.
Yoke for quad bundle
i-string
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
B C D1 D2kN kA 1s kg
4276.0104 400 19 20 20 120 40 16,104276.32/19/1 400 19 20 20 210 40 15,504276.32/34 450 16 20 18 120 40 14,604276.0241 450 19 24 20 230 50 18,204276.0266 450 19 30 20 230 63 18,204276.32/22 457 19 22 18 160 40 16,704276.32/1/1 457 16 26 22 160 40 18,504276.32/30 457 19 20 20 210 40 19,10
Additional holes for attaching arcing devices and for applying tools in case
of hot line work are possible.
Recesses for applying tools in case of hot line work are possible.
Other types are available upon request.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Yoke plate with damping straps
for rigid V-strings
Rigid V-strings will be used for suspension towers and angle towers with angles
of up to 10°. Thanks to the damping system based on the yoke plate and the
suspension hinges, loads with a high horizontal predominance can also be
controlled.
Yoke platesfor V-strings, inverse V-strings and Y-strings
V-strings with small angles will, as a rule, be equipped with long rod insulators
and are rigid. Depending on the application, there are many models.
Here are two examples:
3STRING HARDWARE
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If one string breaks, the yoke will be swivelled to its final
position, the damping tongue being bent over the two bolts.
The damping tongue has been dimensioned so as to make sure
that it will remain in the elastic area at the maximum displace-
ment angle due to wind loads.
Triangular yoke with a damping tongue
for suspension strings
Frame yoke with a damping tongue
for tension strings
The effect of the long frame, which is due to the lower change in length at the
swivelling-in movement, is reinforced by bending the damping tongue. In this
case, no impact of wind displacement is opposed to optimal design.
3 STRING HARDWARE
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Shifting yoke in trapezoidal and triangular form
for tension strings
Here force is introduced in a balanced manner.
As for the trapezoidal yoke, the mobility of the system will also
help to reduce loads in case of rupture of a string.
This arrangement is also suitable for calculation.
Displacement yoke with damping elements
for tension strings for all conductor configurations
The concept of separate conductor suspension, which had
been developed for suspension strings, was implemented in
that the yoke, which only consists of displacement elements,
will be very flexible in case of transposition. Nevertheless,
a safe live connection of the two insulator strings is guaranteed
at normal operation.
Yoke with hinge for tension strings
for connecting a triple bundle with a double string
At normal operation, the yoke will act as one single rigid yoke that distributes load.
If a string breaks, this yoke will fold open and thus enable thrust displacement of
a displacement yoke with damping elements.
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Rotary spacer with damping links
for suspension strings with horizontal twin bundle conductors and for four bundle conductors
The idea behind this is that each of the conductors arranged ho-
rizontally is separately fixed to an insulator. The live connection
of the insulator is provided by the rotary spacers arranged at a
distance of approx. 1m. If one string breaks, the loads will be
transmitted from the intact string extremely gently.
Flapping yoke for suspension strings
for connecting a triple bundle to a double string
For triple bundles, single fastening of the conductors to 2 insulators is not possible.
The yoke that will fold open in case of load transposition and can also be equipped
with damping elements will enable gentle transmission of the loads.
Unhingeable yoke with slots on the side
for suspension strings
In case of transposition, the whole yoke will be drawn out of the connection,
the conductors remaining connected to the remaining insulator string over the
displacement elements. The slots on the side have been conceived as to make sure
that there cannot be any uncoupling at maximum wind displacement.
for all conductor configurations
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Yoke with shifting slots
with displacement elements for tension strings for all conductor configurations
This type of yoke enables large-area displacement of the damping
elements, which is provided by the sliding slot.
The displacement elements can be wave shaped or meandering.
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SUSPENSION CLAMPS
04
Contents
4 SUSPENSION CLAMPS
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General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Suspension clamp trunnion type, forged, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Suspension clamp trunnion type, forged, with bigger angle of de�ection, for aluminium based
conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Suspension clamp with bolt, forged, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Suspension clamp with steel strap as trunnion, casted, for aluminium based conductors . . . . . . . . . . . . . . . . . . 64
Suspension clamp with bolt, casted, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Suspension clamp with bolt, casted, with shackle, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . 65
Suspension clamp envelope type casted, for aluminium based conductors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Suspension clamp envelope type trunnion type, casted, for aluminum based conductors . . . . . . . . . . . . . . . . . 66
HSU trunnion type, forged, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
HSU with aluminium belt, casted, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Compact suspension clamp trunnion type, forged, with line guards, for aluminium based conductors . . . . 69
Compact suspension clamp trunnion type, forged, with armor rods, for aluminium based conductors . . . . 70
Counter weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Suspension clamps support and connect conductors onto insulator strings.
Information for ground wire suspension clamps, including fibre optic cables (OPGW - optical ground wires) and ADSS (all-dielec-
tric self-supporting) cables can be found in Parts 8 and 18 of the catalogue.
Suspension clamps provide the following:
- A safe mechanical connection in all conditions. This includes all
ruling span stresses at maximum working loads combined with
controlled grip of longitudinal tension that provides protection.
Suspension clamps also provide longitudinal grip control, relea-
sing the conductor at the suspension clamps at defined slip loads
to prevent damage.
- The clamps are designed to protect the conductor at line design
installation loads.
- Suspension clamps incorporate controlled movement for added
conductor protection against wind induced vibration and oscil-
lation.
- High electrical current short circuit loads are transmitted through
arcing devices attached to string hardware protecting the suspen-
sion system. For more details, please refer to Part 3 of the catalo-
gue.
- The outer profile clamp shapes are designeduce electrical dischar-
ge to below maximum specified corona extinction voltages. The-
se values are also influenced by conductor bundle configuration,
and must also be considered.
- All materials used are fully compatible with the conductor appli-
cation. For example, clamps attached to aluminium based con-
ductors are manufactured from high strength corrosion resistant
aluminium alloys.
- Unless otherwise specified, all ferrous components are hot dip-
ped galvanized acc. to EN 61284 or ISO EN 1461; Overhead
lines-requirements and tests for fittings. Where stainless steel fas-
teners are used, ISO EN 3506; Mechanical properties of corro-
sion resistant stainless steel fasteners - Part 1: Bolts, screws and
studs are specified.
- For special cases where big dynamic loads may occur at low
temperatures, fittings made of low-temperature (cryogenic)
steels are available.
- For lines constructed in higher corrosive atmospheres and
environments, the minimum zinc thickness of fittings can be
increased from 85 μ to 110 μ or 130 μ Microns. - All fitting assemblies supplied have identification marking
according to EN 61284; this includes manufactures mark and
date code, specified minimum mechanical failure load, and
1 second short circuit current withstand rating.
General
Material
Bosporus Crossing:Double I-insulator string with a
saddle type suspension clamp
4SUSPENSION CLAMPS
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Counter Weights can be specified to restrict displacement angles to
maintain ground earth clearancesand avoid conductor uplift.
There are several attachment options:
- Counterweight devices can be mounted using elongated bolts.
- For vertical twin and quadruple bundles, weights can be moun-
ted onto the connecting straps.
- Counterweights can also be mounted onto conductor bundle
spacers in Jumper Loops. (See also Part 9)
- Counterweight clamp attachments may reduce earth grounding
clearances. If space restrictions apply, counterweights can be
mounted directly onto the conductor.
Example of a
suspension device
for counterweights
Example of the
assembly of
counterweights
Arrangement of
counterweights for
jumper loops
Counterweights for
conductors
- Eye-clevis connections are designed acc. to IEC 61471 and
DIN 48074 - Eyes and clevises; connecting dimensions, Bolts acc.
to DIN 48073 - Connecting bolts for overhead power lines.
- Bolt security split pins are manufactured in stainless steel. Copper
tin-plated types can be also be supplied.
4 SUSPENSION CLAMPS
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The following catalogue pages provide an overview of the types of suspension clamp most commonly used. For more specialised re-quirements, suspension clamp designs accommodate specific line protection features.
Controlled slip suspension clampsThis type allows controlled axial cable slip forces to be precisely adjusted to allow controlled cable release at specified loads. Axial grip and slip dis-placement is maintained following high imbalanced span loadings e.g; impact or ice shedding loads on adjacent spans.
Suspension clamps for wide-span fieldsFor longer spans, double clamp types can be specified for higher strength and reduced cable bending stresses by reducing cable angle deviation at suspension points. Saddle type suspension clamps, manufactured from high strength corrosion resistant aluminium alloys, are contoured at the cable connec-tion interface to reduce support stresses, and are also recommended for long span high line angle deviation routes. This type can also be offered
as a controlled slip load clamp.Both clamp types have proven reliability and long service life with multiple power network operators.
Suspension clamps for high-tempera-
ture conductorsAs power requirements increase, high-temperature carrying conductors with a capacity of up to 235°C will be more common.
However, the clamps used for these con-ductors must not be affected by high tem-peratures and maintain strength and me-chanical performance.
It is therefore necessary to increase the mass and surface area of clamp designs to reduce thermal stresses. This is preferably accomplished by the use of Armour Rods.
Releasing
suspension clamp
(left)
and
Characteristic
force-time
behaviour (right)
Double-suspension
string with a saddle
type suspension
clamp (left) and
Saddle type
suspension clamp
at a vibration test
in the laboratory
(right)
Heat cycle test with
suspension clamps
for high-tempera-
ture conductors
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Long-term testing demonstrates the effectiveness of these develop-ments. These tests also prove suitability of different types of high temperature conductor’s e.g. where the steel core has a gap arran-ged loosely inside the conductor (e.g. GAP GZTACSR conductor).
Suspension clamps for bundle conductors, for vertical twin and
quadruple bundles
All types of clamps can be used in multiple string configuartions
with specific bundle spacings. Different types of conterweight can
be adapted for direct or indirect connection to conductors.
Special models of suspension clamps
For changing between different bundle
shapes or for substation feeds, special
designs may be necessary.
Helical Suspension UnitIn the clamping area, the conductor will be surrounded by a neoprene insert of concave shape preventing the conductor from slipping under longitudinal ten-sion. The helically formed rods wound around the neoprene insert are gripped by the main clamping body.There are two basic types available.A forged aluminium main body type, with steel axle pivots screwed and pressed into the body at the conductor centre line, easing installation. The main bodies are hinged and clamped by a conventio-nal bolt, attached by steel straps to the pivots and insulator string.A conventional cast aluminium body type is secured and connected together by a high strength aluminium strap, with a clevis bolt string attachment above the conductor.
Suspension clamp
for a vertical twin
bundle
Parallel groove
clamp as suspen-
sion clamp (left)
and
an example of the
changing from a
twin bundle to a
triple bundle (right)
HSU clamp with a
connection to the
centre
HSU clamp with an
aluminium belt
4 SUSPENSION CLAMPS
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Helical wire fittingsHelical wire fittings are made of formed round wire rods, with the ends shaped depending on the material and diameter. The formed diameters of the wires are smaller than the diameter of cable to be applied. This creates uniform radial pre compression of the spiral without permanent distortion of the wires or sub-sets. This applies the initial low stress grip of the cable, which increases as a resultant of higher tension forces that convert to high frictional grip. Uniform radial loads and grip increase over a longer application and contact length that provide low relative and uniform radial stress.
Suspension points have reinforcing rods with larger suspension clamps applied. Special short-suspension clamps or helical suppor-ting units (HSU’s) with integrated armour rods will also be used.
Identification and labelling of products are in accordance with;
IEC 61284 (Rules of behaviour with respect to possible hazards when dealing with electric equipment and equipment employing similar techniques) will either be printed on individual rod sets or stated on a label connected to the set.
The lay direction of the helical rods is normally same as that of the outermost layer of the conductor, typically right hand lay.
The material used is the same as that in the outer layer of the conductor.
Example of
a HSU clamp
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Suspension clamp trunnion type, forged
for aluminium based conductors
material: aluminium, forged; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C boltkN kA 1s kg
4334.0023 23,1 - 29,5 250 130 20 19 100 40 2,564334.0024 29,0 - 36,0 300 150 20 19 120 40 3,704334.0022 29,0 - 36,0 300 150 20 22 120 40 3,80636.07/121A 35,0 - 52.0 250 140 20 22 120 40 3,904334.0036/1 50,1 - 57,5 300 150 20 19 150 40 5,294334.0036 50,1 - 57,5 300 150 20 22 150 50 5,30
Other dimensions are available upon request.
Suspension clamp trunnion type, forged, with bigger angle of de�ection
for aluminium based conductors
material: aluminium, forged; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B Cbolt kN kA 1s kg
636.03/203 14,0 - 16,5 256 110 20 19 100 40 2,95636.04/203 19,0 - 21,8 310 110 20 19 110 32 3,14636.05/204 24,0 280 110 20 22 125 32 3,17636.06/204 32,0 305 120 20 22 175 50 4,45636.08/204 39,2 334 135 20 22 260 50 5,33
The fact that the conductor cavity is prolonged will lead to a bigger angle of departure of the
conductor.
Other dimensions are available upon request.
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Suspension clamp with bolt, forged
for aluminium based conductors
material: aluminium, forged; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C boltkN kA 1s kg
637.02/102 9,0 - 14,0 140 90 20 19 55 18 1,07637.03/101 13,5 - 17,5 170 100 20 19 50 20 1,37637.04/104 18,5 - 23,0 190 125 20 19 85 30 2,09637.05/11 21,2 - 23,4 220 140 20 19 85 30 2,44637.05/21 23,5 - 25,7 250 160 20 19 130 30 3,00637.06/10 25,8 - 28,1 250 160 20 19 130 30 2,95637.06/602 28,1 - 30,0 250 160 20 19 130 30 2,94637.07/1 30,1 - 32,8 270 170 20 22 130 30 3,80637.07/21 33,0 - 36,0 300 190 20 19 150 40 4,95637.07/23 36,1 - 39,0 300 190 20 22 150 50 5,07637.07/25 40,0 - 44,0 300 190 20 22 150 50 4,80
Other dimensions are available upon request.
Suspension clamp with steel strap as trunnion, casted
for aluminium based conductors
material: aluminium, casted; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C boltkN kA 1s kg
4335.07/20 25,0 - 32,0 250 130 20 19 130 32 3,154334.08 43,0 - 52,0 280 150 20 19 160 30 4,124334.0030 52,0 - 62,0 300 150 20 18 160 35 5,50
Other dimensions are available upon request.
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Suspension clamp with bolt, casted
for aluminium based conductors
material: aluminium, casted; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B Cbolt kN kA 1s kg
4335.04/1 9,0 - 16,5 210 115 20 19 80 18 1,804335.05/1 16,5 - 22,1 230 133 20 19 100 32 2,384335.06 21,0 - 25,0 250 145 20 19 120 32 2,914335.07 25,0 - 32,0 250 165 20 19 130 32 3,204335.11 32,0 - 36,0 270 182 20 19 120 32 3,954335.16 36,0 - 47,0 290 185 20 19 160 32 4,50
Other dimensions are available upon request.
Suspension clamp with bolt, casted, with shackle
for aluminium based conductors
material: aluminium, casted; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A BkN kA 1s kg
4326.01 9,0 - 16,5 210 80 80 18 1,604337.9001 15,0 - 18,5 190 133 100 32 2,90
Other dimensions are available upon request.
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Suspension clamp envelope type casted
for aluminium based conductors
material: aluminium, casted; aluminium extruded; steel, hot dipgalvanized
dimensions in mmL.-Nr.
cond.Ø A B C boltkN kA 1s kg
4301.10 24,0 - 32,0 280 90 50 19 120 40 2,484301.11 32,0 - 36,5 280 90 50 19 100 40 2,664301.12 36,0 - 43,0 280 125 55 19 120 40 2,914301.13/0 43,0 - 53,0 280 95 60 19 120 40 3,204301.14 53,0 - 65,0 340 125 82 22 140 50 4,90
These types with a connecting bolt at the top have a shape that means the clevis widths do not
conform to the IEC recommendation. Therefore, a connecting piece, e.g. a hinge, will be required
in addition.
Rounding off guarantees a high corona resistant performance.
Other dimensions are available upon request.
Suspension clamp envelope type trunnion type, casted
for aluminum based conductors
material: aluminium, casted; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C boltkN kA 1s kg
4301.0010 32,0 - 36,5 280 75 62 16 120 25 3,30
These types with a connecting bolt at the top have a shape that means the clevis widths do not
conform to the IEC recommendation. Therefore, a connecting piece, e.g. a hinge, will be required
in addition.
The steel eyes of these suspension clamps are �xed in the housing by means of a steel strap.This
�xing point is in line with the conductor axis.Rounding off guarantees a high corona resistant
performance.
Other dimensions are available upon request.
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HSU trunnion type, forged
for aluminium based conductors
material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C Dbolt kN kA 1s kg
4361.07 12,24 - 12,69 90 20 1020 19 80 32 2,004361.08 12,70 - 13,02 90 20 1020 19 80 32 1,704361.09 13,03 - 13,48 90 20 1040 19 80 32 1,704361.10 13,49 - 13,78 90 20 1040 19 80 32 1,704361.11 13,79 - 14,11 90 20 1120 19 80 32 2,004361.12 14,12 - 14,57 90 20 1120 19 80 32 2,004361.13 14,58 - 15,10 90 20 1140 19 80 32 2,104361.14 15,11 - 15,41 90 20 1170 19 80 32 2,104361.15 15,42 - 15,74 90 20 1170 19 80 32 2,104361.19 15,55 - 18,05 90 20 1370 19 80 32 2,704361.16 15,75 - 16,40 90 20 1270 19 80 32 2,204361.17 16,41 - 17,11 90 20 1370 19 80 32 2,704361.18 17,12 - 17,54 90 20 1370 19 80 32 2,704361.20 18,06 - 18,58 90 20 1400 19 80 32 2,804361.21 18,59 - 19,07 90 20 1420 19 80 32 2,804361.22 19,08 - 19,52 120 20 1520 19 110 35 4,004361.23 19,53 - 20,21 120 20 1520 19 110 35 4,104361.24 20,22 - 20,95 120 20 1550 19 110 35 4,104361.25 20,96 - 21,48 120 20 1630 19 110 35 4,204361.26 21,49 - 22,11 120 20 1630 19 110 35 4,204361.27 22,12 - 22,70 120 20 1650 19 110 35 4,404361.28 22,71 - 23,05 120 20 1650 19 110 35 4,404361.29 23,06 - 23,38 140 20 1680 19 120 35 5,204361.30 23,39 - 23,82 140 20 1680 19 120 35 5,204361.31 23,83 - 24,45 140 20 1700 19 120 35 5,304361.32 24,46 - 25,06 140 20 1730 19 120 35 5,504361.33 25,07 - 25,54 140 20 1750 19 120 35 5,504361.34 25,55 - 25,97 150 20 2030 19 110 35 8,704361.35 25,98 - 26,43 150 20 2080 19 110 35 8,704361.36 26,44 - 27,30 150 20 2080 19 110 35 8,704361.37 27,31 - 27,70 150 20 2080 19 110 35 7,904361.38 27,71 - 28,41 150 20 2080 19 110 35 9,004361.39 28,42 - 28,87 150 20 2080 19 110 35 7,404361.40 28,88 - 29,28 150 20 2080 19 110 35 7,404361.41 29,29 - 29,86 150 20 2080 19 110 35 9,00
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C Dbolt kN kA 1s kg
4361.42 29,87 - 30,70 150 20 2080 19 110 35 7,404361.43 30,71 - 31,16 155 20 2240 19 120 40 11,104361.44 31,17 - 31,99 155 20 2240 19 120 40 11,204361.45 32,00 - 32,68 155 20 2240 19 120 40 11,504361.46 32,69 - 33,39 155 20 2240 19 120 40 11,504361.47 33,40 - 34,43 155 20 2240 19 120 40 11,50
These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors
are available upon request.
The screw type bolts of these clamps have been mounted in line with the conductor axes. This will
help to improve mobility and reduce alternating bending strains caused by vibrations. In order to
minimize abrasion between the eyes and the screw type bolts, these parts are made of steel. HSU’s
(heliformed suspension units) can be used for a conductor angle of up to 30°. Conductor angles
of up to 60° will be possible if two bodies are connected by a suitable yoke plate via a combined
heliformed rod.
This is shown in part 18.Other dimensions are available upon request.
HSU with aluminium belt, casted
for aluminium based conductors
material: aluminium, casted; aluminium, extruded; aluminium-rods; steel, hot dip galvanized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C Dbolt kN kA 1s kg
4361.04/2/AO 11,05 - 11,45 55 22 910 16 50 25 0,604361.06/2/AO 11,96 - 12,23 55 22 910 16 50 25 1,104361.07/2/AO 12,24 - 12,69 55 22 1020 16 60 25 1,304361.08/2/AO 12,70 - 13,02 55 22 1020 16 60 25 1,104361.08/3/AL 12,70 - 13,02 55 22 1800 16 80 25 1,404361.09/2/AO 13,03 - 13,48 55 22 1040 16 60 25 1,304361.11/2/AO 13,79 - 14,11 53 22 1120 16 70 25 1,504361.12/2/AO 14,12 - 14,57 53 22 1120 16 70 25 1,50
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material: aluminium, casted; aluminium, extruded; aluminium-rods; steel, hot dip galvanized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C Dbolt kN kA 1s kg
4361.13/2/AO 14,58 - 15,10 53 22 1140 16 70 25 1,604361.13/3/AL 14,58 - 15,10 53 22 1800 16 70 25 2,004361.14/2/AO 15,11 - 15,41 53 22 1170 16 70 25 1,504361.16/2/AO 15,75 - 16,40 53 22 1270 16 70 25 1,604361.17/2/AO 16,41 - 17,11 63 22 1370 16 70 25 2,004361.18/2/AO 17,12 - 17,45 63 22 1370 16 80 25 2,004361.19/2/AO 17,55 - 18,05 63 22 1370 16 70 25 3,304361.21/2/AO 18,59 - 19,07 63 22 1420 16 70 25 3,304361.22/2/AO 19,08 - 19,52 70 22 1520 16 100 25 1,704361.23/2/AO 19,53 - 20,21 70 22 1520 16 100 25 3,304361.24/2/AO 20,22 - 20,95 70 22 1550 16 100 25 1,704361.25/2/AO 20,96 - 21,48 70 22 1630 16 100 25 4,004361.27/2/AO 22,12 - 23,05 70 22 1650 16 100 25 3,604361.33/2/AO 25,07 - 25,54 74 22 1750 16 100 25 4,204361.34/2/AO 25,55 - 25,97 75 22 2030 19 120 40 6,004361.35/2/AO 25,98 - 26,43 75 22 2080 16 120 25 4,704361.37/2/AO 27,31 - 27,70 75 22 2080 16 120 25 4,80
These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors
are available upon request.
Clamps with reinforcing rods are available upon request.Other dimensions are available upon
request.
Compact suspension clamp trunnion type, forged, with line guards
for aluminium based conductors
material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized
dimensions in mmL.-Nr.
cond.Ø B C D boltkN kA 1s kg
4352.08 15,42 - 16,02 115 20 840 19 60 30 2,004352.09 16,03 - 16,65 115 20 840 19 60 30 2,004352.10 16,66 - 17,26 115 20 890 19 60 30 2,004352.11 17,27 - 17,87 135 20 890 19 100 35 2,90
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material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized
dimensions in mmL.-Nr.
cond.Ø B C D boltkN kA 1s kg
4352.12 17,88 - 18,81 135 20 940 19 100 35 2,904352.13 18,82 - 20,13 135 20 990 19 100 35 2,904352.14 20,14 - 22,82 135 20 990 19 100 35 3,004352.15 20,14 - 22,82 135 20 1040 19 100 35 3,004352.16 22,83 - 24,25 135 20 1090 19 100 35 3,204352.17 24,26 - 25,06 135 20 1140 19 100 35 3,204352.18 25,07 - 25,82 140 20 1140 19 120 35 3,654352.19 25,83 - 27,04 140 20 1190 19 120 35 3,704352.20 27,05 - 27,90 150 20 1240 19 120 40 4,354352.21 27,91 - 29,30 150 20 1240 19 120 40 4,504352.22 29,31 - 30,70 150 20 1300 19 120 40 5,104352.23 30,71 - 32,22 150 20 1350 19 120 40 5,104352.24 32,23 - 33,72 150 20 1350 19 120 40 5,304352.25 33,73 - 35,32 150 20 1400 19 120 40 5,304352.26 35,33 - 36,59 155 20 1450 19 150 40 6,254352.27 36,60 - 38,32 155 20 1500 19 150 40 6,25
These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors
are available upon request.
Other dimensions are available upon request.
Compact suspension clamp trunnion type, forged, with armor rods
for aluminium based conductors
material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized
dimensions in mmL.-Nr.
cond.Ø B C D boltkN kA 1s kg
4353.04 11,10 - 11,78 115 20 1370 19 60 30 2,204353.05 11,79 - 12,46 115 20 1370 19 60 30 2,204353.06 12,47 - 13,25 115 20 1420 19 60 30 2,204353.07 13,26 - 14,01 115 20 1470 19 60 30 2,504353.08 14,02 - 14,87 115 20 1520 19 60 30 2,504353.09 14,88 - 15,41 115 20 1570 19 60 30 2,504353.10 15,42 - 16,02 135 20 1630 19 100 35 3,40
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized
dimensions in mmL.-Nr.
cond.Ø B C D boltkN kA 1s kg
4353.11 16,03 - 16,65 135 20 1630 19 100 35 3,404353.12 16,66 - 17,26 135 20 1680 19 100 35 3,404353.13 17,27 - 17,87 135 20 1730 19 100 35 3,704353.14 17,88 - 18,81 135 20 1830 19 100 35 3,704353.15 18,82 - 19,88 135 20 1830 19 100 35 3,704353.16 19,89 - 20,69 135 20 1930 19 100 35 4,304353.17 20,70 - 21,48 135 20 1930 19 100 35 4,304353.18 21,49 - 23,05 140 20 1980 19 100 35 2,644353.19 23,06 - 23,61 140 20 2030 19 100 35 4,904353.20 23,62 - 24,81 140 20 2240 19 100 40 5,804353.21 24,82 - 25,82 140 20 2340 19 100 40 6,904353.22 25,83 - 26,30 140 20 2390 19 100 40 6,904353.23 26,31 - 27,04 150 20 2440 19 120 40 7,504353.24 27,05 - 27,90 150 20 2540 19 120 40 7,504353.25 27,91 - 28,92 150 20 2540 19 120 40 7,504353.26 28,96 - 29,50 150 20 2540 19 120 40 7,504353.27 29,51 - 30,70 150 20 2540 19 120 40 7,804353.28 30,71 - 32,25 155 20 2540 19 150 40 9,604353.29 32,26 - 33,72 155 20 2540 19 150 40 9,60
These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors
are available upon request.
Other dimensions are available upon request.
Counter weight
material: cast iron, hot dip galvanized
dimensions in mmL.-Nr.
A Bkg
4371.02 350 37 25,00
To be used in combination with counter weight set, which is available upon request.
Other types of counter weights are available upon request.
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TENSION CLAMPS AND JOINTS
05
Contents
5 TENSION CLAMPS AND JOINTS
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General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Wedge tension clamp without jumper guide, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Wedge tension clamp with jumper guide, for aluminium based conductors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Double wedge tension clamp without jumper guide, for aluminium based conductors . . . . . . . . . . . . . . . . . . . 80
Double wedge tension clamp with jumper guide, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . 81
Bolted type tension clamp, for aluminium based conductors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Heliformed dead end with thimble and reinforcing rods, for aluminium based conductors . . . . . . . . . . . . . . . . 82
Compression dead end clamp with eye for ACSR, according to DIN Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Compression dead end clamp with eye for ACSR, according to international standards. . . . . . . . . . . . . . . . . . . . 84
Compression dead end clamp with clevis for ACSR, according to DIN Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Compression dead end clamp with clevis for ACSR, according to international standards. . . . . . . . . . . . . . . . . . 85
Compression dead end clamp with eye for AAAC, according to DIN Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Compression dead end clamp with eye for AAAC, according to international standards . . . . . . . . . . . . . . . . . . . 86
Compression dead end clamp with clevis for AAAC, according to DIN Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Compression dead end clamp with clevis for AAAC, according to international standards . . . . . . . . . . . . . . . . . 87
Compression dead end clamp with eye, for steel and ACS-conductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Compression dead end clamp with clevis, for steel and ACS-conductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Compression joint for ACSR, according to DIN Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Compression joint for ACSR, according to international standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Compression joint for AAAC, according to DIN Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Compression joint for AAAC, according to international standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Compression joint, for steel and ACS-conductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Repair sleeve, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Repair sleeve, for steel and ACS-conductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Tension clamps connect conductors to tension strings and withstand
the required mechanical holding forces.
A distinction is made between two types of tension clamps, which have
fundamental differences:
- Disconnectable clamps, such as wedge tension clamps, bolted type
tension clamps, helical dead ends and strain thimbles, can all be
adjusted;
- Compression dead end clamps, are permanent connections, and
cannot be adjusted for span, sag, or tension adjustments.
Tension clamps must fulfil the following tasks:
- A mechanical connection that safely withstands tension loads in all
operating cases. This requires a minimum mechanical failing load
force withstand to up 95% of the breaking load of the conductors
according to the relevant specification. For substation applications,
these requirements can be reduced. To reach high tension require-
ments, conductor entry clamp profiles are designed for minimum
conductor stress. Mechanical tension forces in compression dead
end clamp jumper loops are lower.
- The design of the conductor entry profile reduces risk of damage
due to wind induced movement and vibrations.
- High currents caused by short circuit events are transmitted to the
arcing devices through the string hardware. For a more detailed
explanation, please refer to Part 3 of the catalogue.
- Clamps have design profiles that reduce electrical stress and partial
discharges to control corona extinction to above defined values.
Conductor bundle configurations combined with high nominal vol-
tages at tension towers, may require fitment of corona rings.
General
Material - All materials used are fully compatible with the conductor ap-
plication. For example, wedge clamps attached to aluminium
based conductors are manufactured from high strength corrosion
resistant aluminium alloys.
- Unless otherwise specified, all ferrous components are hot dip-
ped galvanized acc. to EN 61284 or ISO EN 1461; Overhead
lines-requirements and tests for fittings. Where stainless steel
fasteners are used, ISO EN 3506; Mechanical properties of cor-
rosion resistant stainless steel fasteners - Part 1: Bolts, screws and
studs are specified.
- For special cases where big dynamic loads may occur at low
temperatures, fittings made of low-temperature (cryogenic)
steels are available.
- For lines constructed in higher corrosive atmospheres and
environments, the minimum zinc thickness of fittings can be
increased from 85 μ to 110 μ or 130 μ Microns. - All fitting assemblies supplied have identification marking
according to EN 61284; this includes manufactures mark and date
code, specified minimum mechanical failure load, and 1 second
short circuit current withstand rating.
Tension string
with corona ring
400 kV tension tower: 2 systems for a quadruple
bundle
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- Eye-clevis connections are designed acc. to IEC 61471 and
DIN 48074 - Eyes and clevises; connecting dimensions, Bolts acc.
to DIN 48073 - Connecting bolts for overhead power lines. Bolt
security split pins are manufactured in stainless steel.Copper tin-
plated types can also be supplied.
Wedge tension clamps
These clamps can be used for overhead lines
and substations.
The clamping effect of the wedge tension clamp
is created by the wedge action converting ten-
sion load into compressive clamping loads.
As tension loads increase, longitudinal wedge
movement inside the housing increases clam-
ping forces and strength.
Special grease lubrication of the wedges reduces
friction increasing mechanical grip.
Clamp selection also depends on the conductor configuration. For
ACSR applications, the designs of the conductor grooves are optimised
to clamp the aluminium outer strands into the steel core providing
good mechanical grip and strength. As for conductors that are heavily
greased, there are special types with reinforced screws. For increasing
radial pressure, these wedge clamps will be provided with a special dry
coating on the sliding surfaces. Furthermore the conductor groove is
appropriately modified. If wedge tension clamps are used, the jumper
loops are usually connected by 2 or 3 parallel groove clamps.
In principle, two types are available:
Wedge tension clamps, are made of two forged bodies connected
by a hinge with corresponding wedges. These can be with or
without jumper connection. The jumper connection is forged with
one of the two wedges. If, however, conductor diameters are bigger,
it can also be connected by means of screws separately.
Stainless Steel connecting screws are supplied as standard A2 quality.
Hot dip galvanized screws can also be specified on request.
Double wedge tension clamps have two bodies made from a high-strength aluminium profile, with wedge designed as previously described. Hot dipped galvanized screws are standard, Stainless steel A2 quality screws can also be supplied. This type of clamp is suitable for smaller conductors only.
Cone type tension clamps
These clamps work in the same way as wedge
tension clamps, but the wedges are cone
shaped. Cones are available with or without
jumper conections. Depending upon the
construction of the conductors or OPGW
it can be necessary to use reinforcing rods.
Cone diameters will be calculated acc. to the
conductor dimensions.
Wedge tension
clamp with
jumper connection
Cross section of a
wedge tension
clamp
Cross section of a
double wedge
tension clamp
Cone type tension
clamp
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Wedge tension clamp for instalation on site
These wedge clamps are used to fix the con-
ductor temporary while the original clamp
will be fixed.
The installation clamps are equipped with
flexible steel straps and a demounting device
and make it possible to unload the endings of
the conductor while fixing the original Com-
pression dead end clamps.
Compression dead end clamps and com-
pression joints
These clamps can be used for overhead lines
and substations, and can achieve the highest
breaking loads using compression connection
techniques.
For ACSR conductors, the internal core is
compressed separately before the electrical
connection sleeve. The clamps and joints are
made using hydraulic compression utilising
regular hexagonal dies, specified, identified
and sized for each conductor joint.
Compression positions are marked on each
joint.
Compression devices are available upon request.
Each compression joint is supplied with a tube
of contact compound grease to ensure a good
mechanical and electrical connection between
cable and connecting interfaces and prevent water ingress in expo-
sed positions. Full jointing and assembly instructions are provided,
that includes greasing application instructions.
Compression dead end clamps and joint tubes have internal coni-
cally tapers at the conductor entry as standard avoiding stress points
by providing gradual compression load application. External tube
end tapers can also be supplied.
The compression lug for the jumper shown is angled at 30° which
determines jumper cable direction. For other applications, vertical
jumper directions are required e.g. substa-
tions. This is accommodated by two 15° an-
gles, one on the dead end connecting flag,
the other on the jumper lug.By connecting the lug at opposite faces, verti-
cal or 30° jumper exit angles are made. Other
jumper exit angles are available upon request.
Hot dipped galvanised connecting screw sets
are included within the jointing kit, stainless
steel screws can also be supplied.
Typical force-way
chart for a
compression dead
end clamp
Wedge tension
clamp for
installation on site
Marking of
compression points
Taper of
compression dead
end clamps -
standard design
Possible
connection
variants of the
jumper
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Jumper loop tensions are accommodated by
continuous weld fabrications, with additional
load withstand and stabilisation possible with
supporting straps.
Compression fittings for high-temperature
carrying conductors
As power requirements increase, high-tempera-
ture carrying conductors with a capacity of up
to 235°C will be more common.
However, the clamps used for these conduc-
tors must not be affected by high tempera-
tures and maintain strength and mechanical
performance.
It is therefore necessary to increase the mass and surface area of clamp
and joint designs to reduce thermal stresses.
Long-term testing at MOSDORFER testing laboratories demonstrates
the effectiveness of these developments. These tests also prove sui-
tability of different types of high temperature conductors e.g. where
the steel core has a gap arranged loosely inside the conductor (e.g.
GAP GZTACSR conductor).
For special projects, where electrical noise reduction is required due
to cable corona discharge risks, larger diameter hollow conductors
can be used that have the same electrical current carrying capacity
and cross section as conventional conductors.
Fittings for hollow conductors can also be supplied.
Compression dead
end clamp with an
increased retaining
force for the loop
Ageing test with
compression dead
end clamps for
high-temperature
carrying
conductors in the
laboratory
Compression joint
for the
connection of a
hollow conductor
with an Aluminium-
Steel conductor
5 TENSION CLAMPS AND JOINTS
77
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Helical wire fittings
Helical wire fittings are made of formed round wire rods, with the
ends shaped depending on the material and diameter. The formed
diameters of the wires are smaller than the diameter of cable to be
applied. This creates uniform radial pre compression of the spiral
without permanent distortion of the wires or sub-sets. This applies
the initial low stress grip of the cable, which increases as a resultant
of higher tension forces that convert to high frictional grip. Uniform
radial loads and grip increase over a longer application and contact
length that provide low relative and uniform radial stress.
Helical dead ends have multiple formed wires bonded together with
a formed loop for strain thimble attachment. The inside of the helix
of all helical tension fittings have a high friction textured finish to
improve grip. The materials used are fully compatible with the cable
being applied.
Identification and labelling of products are in accordance with
IEC 61284 (Rules of behaviour with respect to possible hazards
when dealing with electric equipment and equipment employing
similar techniques) will either be printed on individual rod sets or
stated on a label connected to the set.
The lay direction of the helical rods is normally same as that of the
outermost layer of the conductor, typically right hand lay.
The material used is the same as that of the conductor.
Example for a
heliformed
dead end
5TENSION CLAMPS AND JOINTS
78
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Wedge tension clamp without jumper guide
for aluminium based conductors
material: aluminium, forged; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B boltkN kA 1s kg
566.01/24FA 9,1 - 10,5 210 20 19 55 15 1,50566.01/34FA 10,6 - 11,7 210 20 19 55 15 1,42566.11/34FA 10,6 - 11,7 210 20 19 70 18 1,76566.01/44FA 11,8 - 14,0 210 20 19 55 15 1,48566.13/34FA 14,1 - 15,8 270 20 19 100 20 3,80566.04/04FA 15,9 - 17,3 320 20 19 110 32 4,30566.04/14FA 17,4 - 19,2 320 20 19 110 32 4,91566.15/14FA 19,0 - 21,1 360 20 19 180 40 6,00566.15/24FA 21,2 - 23,4 360 20 19 180 40 6,04
The stated values of breaking load refer to the straps, including connecting pieces. The retaining
force of the clamp depends on the conductor con�guration.
In the articles of L.-Nr. 566.01/ ... and 566.03/ ... the straps are riveted on the wedges.
For steel and copper conductors, wedges made of steel can be inserted.
Models with other screws and/or split pins are available upon request.
Other dimensions are available upon request.
Wedge tension clamp with jumper guide
for aluminium based conductors
material: aluminium, forged; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B boltkN kA 1s kg
566.03/24NA 12,6 - 14,0 270 20 19 100 20 2,93566.03/34NA 14,1 - 15,8 270 20 19 100 20 2,95566.04/04NA 15,9 - 17,3 320 29 19 110 32 4,28566.04/14NA 17,4 - 19,2 320 20 19 110 32 4,34566.15/14NA 19,0 - 21,1 360 20 19 180 40 6,60566.15/24NA 21,2 - 23,4 360 20 19 180 40 6,40566.15/34NA 23,5 - 24,8 360 20 19 180 40 6,40566.16/14NA 23,5 - 25,6 435 20 19 200 40 10,69566.16/24NA 25,7 - 27,9 435 20 19 200 40 10,70566.16/34NA 28,0 - 30,1 435 20 19 200 40 10,50566.16/44NA 30,2 - 32,4 435 20 19 200 40 10,60566.16/54NA 32,5 - 33,4 435 20 19 200 40 10,35
5 TENSION CLAMPS AND JOINTS
79
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
material: aluminium, forged; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B boltkN kA 1s kg
566.17/25NA 32,9 - 36,0 525 20 22 300 50 19,20566.17/35NA 36,1 - 39,2 525 20 22 300 50 18,99566.17/45NA 39,3 - 42,4 525 20 22 300 50 18,90
The stated values of breaking load refer to the straps, including connecting pieces. The retaining
force of the clamp depends on the conductor con�guration.
In the articles of L.-Nr. 566.03/ ... the straps are riveted on the wedges.
For steel and copper conductors, wedges made of steel can be inserted.
Models with other screws and/or split pins are available upon request.
Other dimensions are available upon request.
Double wedge tension clamp without jumper guide
for aluminium based conductors
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B boltkN kA 1s kg
4440.50/4 7,5 - 10,0 210 20 19 60 13 1,124440.51/3 10,5 - 12,5 210 20 19 60 13 1,114440.52/1 13,6 - 16,1 310 14 13 60 16 2,254440.53/1 13,6 - 16,1 310 20 19 80 22 2,35
The stated values of breaking load refer to the straps, including connecting pieces. The retaining
force of the clamp depends on the conductor con�guration.
Double wedge tension clamps have a connecting bolt that is made of steel and ensures that
abrasion is limited, when connected with the steel eyes.
Other dimensions are available upon request.
5TENSION CLAMPS AND JOINTS
80
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Double wedge tension clamp with jumper guide
for aluminium based conductors
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B boltkN kA 1s kg
4440.52/4 13,6 - 16,1 310 14 13 60 18 2,404440.52/3 13,6 - 16,1 310 14 13 60 18 2,414440.53/3 13,6 - 16,1 310 20 19 80 22 2,50
The stated values of breaking load refer to the straps, including connecting pieces. The retaining
force of the clamp depends on the conductor con�guration.
Double wedge tension clamps have a connecting bolt that is made of steel and ensures that
abrasion is limited, when connected with the steel eyes.
Other dimensions are available upon request.
Bolted type tension clampfor aluminium based conductors
material: aluminium, casted; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø Abolt U-bolts kN kA 1s kg
4432.08 5,0 - 13,5 17 13 2 X M8 40 10 0,464432.08/1 7,0 - 15,0 20 16 2 X M8 50 25 0,544432.14/10 8,0 - 18,5 19 16 2 X M12 50 25 1,024432.14 9,0 - 16,0 23 16 3 X M10 60 25 0,984432.15/10 12,0 - 25,5 26 16 3 X M12 60 25 1,794432.15/11 12,0 - 29,0 30 16 4 X M14 70 25 4,404432.15/11/1 12,0 - 29,0 30 19 4 X M14 70 40 4,504432.15 16,0 - 20,0 24 16 4 X M12 85 25 1,904432.16/10/1 18,0 - 35,0 36 19 5 X M16 120 40 8,504432.16/10/2 18,0 - 35,0 36 22 5 X M16 120 40 8,604432.16/10 18,0 - 35,0 36 25 5 X M16 120 50 8,70
The stated values of breaking load refer to the clamp fork,
including connecting pieces. The retaining force of the
clamp depends on the conductor con�guration.
Clamps made of malleable iron for copper and
steel conductors are available upon request.
Other versions or dimensions are available upon request.
5 TENSION CLAMPS AND JOINTS
81
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Heliformed dead end with thimble and reinforcing rods
for aluminium based conductors
material: aluminium, casted; steel, hot dip galvanized
dimensions in mmL.-Nr. cond.Ø mm
A B1 B2 Ckg
4480.06 7,25 - 8,53 870 1800 450 20 1,804480.03 8,54 - 10,45 900 1800 430 20 2,004480.00 10,47 - 11,50 1000 2000 475 20 2,404480.01 11,51 - 12,50 1200 2200 407 20 3,234480.02 12,51 - 13,26 1200 2500 573 20 3,504480.04 13,27 - 14,50 1500 2500 435 20 4,524480.05 14,51 - 15,50 1500 2900 533 20 5,034480.07 15,51 - 16,80 1600 3000 514 20 5,584480.08 16,81 - 17,80 1600 3000 550 20 5,904480.09 17,81 - 18,50 1700 3000 464 20 6,144480.10 18,51 - 19,70 1900 3000 550 20 7,554480.11 19,71 - 21,28 2000 3300 650 20 9,234480.12 21,29 - 22,00 2200 3300 513 20 10,184480.13 22,01 - 23,00 2200 3500 645 20 10,904480.14 23,01 - 23,60 2200 3500 675 20 10,904480.15 23,61 - 24,40 2400 3500 574 20 12,204480.16 24,41 - 25,30 2400 3500 608 20 12,404480.18 26,21 - 27,20 2400 3500 670 20 12,60
These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors
are available upon request.
Dead ends for ACS-strands in the outer layer are available upon request.
Dead Ends for ADSS-conductors are available upon request.
Other dimensions are available upon request.
5TENSION CLAMPS AND JOINTS
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression fittings can be supplied in many variants:
e.g.
- clamps with bore holes for the filling with grease
- with twisted connection devices for quadruple bundles
- with a welded cable lug
- with an elongated cable lug as abrasion protection for vertical two bundles - for Aluminium-Steel conductors with only one center wire clamps and joints without steel sleeve can be supplied
Compression dead end clamps and compression joints will be adapted to suit the conductor being used very ac-
curately. For this reason, we have only included the DIN conductors as well as conductors using code names which
are most commonly used.
Compression material for conductors with other material qualities or material types of aluminium can be supplied
upon request.
Clamps with other conection devices and oval eyes can also be supplied upon request.
Compression fittings for ACSR with a big steel core will be delivered with a filler sleeve.
MOSDORFER offers compression fittings with internal tube end tapers as well as external tube end tapers, the fol-
lowing pages explain the most common types.
Other types upon request. Non tension fittings are also available. Materials for copper upon request.
Compression dead end clamps and compression joints
Compression dead end clamp with eye for ACSR
according to DIN Standard
material: aluminium, extruded; steel, hot dip galvanized
Die No. dimensions in mmL.-Nr.
cond.cross section sq mm cond.Ø mm
Al St A B C Dkg
4462.53 120/ 20 15,50 25 13 260 175 19 20 0,904462.62/1 240/ 40 21,80 34 15 375 220 19 20 1,724462.64/S 257/ 60 23,10 38 19 338 245 19 20 1,934462.66 300/ 50 24,40 38 17 330 245 19 20 2,204462.67 340/ 110 27,70 46 28 470 290 19 20 4,304462.74 680/ 85 36,00 58 23 510 320 19 20 6,00
Other dimensions and types are available upon request.
5 TENSION CLAMPS AND JOINTS
83
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression dead end clamp with eye for ACSR
according to international standards
material: aluminium, extruded; steel, hot dip galvanized
Die No. dimensions in mmL.-Nr.
cond.cross section sq code cond.Ø mm
Al St A B C Dkg
4462.45 DOG 14,15 25 13 260 200 19 20 1,354462.41/1 WOLF 18,13 30 15 325 230 19 20 1,704462.78/2 CARDINAL 30,42 50 21 470 290 19 20 3,774462.0012 FINCH 32,85 52 21 495 315 19 20 4,204462.0015 GRACKLE 33,97 52 23 495 315 19 20 4,304462.82 PHEASANT 35,10 50 24 470 320 19 20 4,914462.133 MARTIN 36,17 58 23 510 320 19 24 6,004462.128 BLUEBIRD 44,76 70 23 590 370 19 24 10,50
Other dimensions and types are available upon request.
Compression dead end clamp with clevis for ACSR
according to DIN Standard
material: aluminium, extruded; steel, hot dip galvanized
Die No. dimensions inmmL.-Nr.
cond.cross section sq mm cond.Ø mm
Al St A B Cbolt kg
4463.50/2 70/12 11,70 18 9 265 150 20 19 1,304463.49/2 50/30 11,70 28 15 275 190 20 19 1,604463.53 120/ 20 15,50 25 13 275 180 20 19 1,604463.98 95/55 16,00 30 19 290 200 20 19 1,654463.56 150/ 25 17,10 28 13 290 185 20 19 1,704463.130/1 105/75 17,50 34 21 330 200 20 19 2,004463.59 185/ 30 19,00 30 15 330 219 20 19 1,704463.63 230/30 21,00 34 15 330 215 20 19 1,924463.62 240/ 40 21,80 34 15 370 220 20 19 1,984463.48 265/35 22,40 38 15 330 245 20 19 2,404463.64/1 257/ 60 23,10 38 21 345 245 20 19 2,904463.65 300/ 50 24,50 38 17 330 346 20 19 2,404463.67 340/ 110 27,70 46 28 480 330 20 19 4,504463.110 450/40 28,70 46 15 440 290 20 22 4,204463.86/10/2 435/55 28,80 46 19 425 290 20 19 3,704463.78/10 490/65 30,60 50 21 470 290 20 19 4,104463.73/2 560/50 32,20 52 17 450 305 20 19 4,174463.72 550/70 32,40 52 21 470 305 20 19 7,204463.74/3 680/ 85 36,00 58 23 510 315 20 22 6,204463.103 1045/45 43,00 76 17 525 355 20 19 8,904463.103/3 1045/45 43,00 76 17 525 355 24 22 8,90
Other dimensions and types are available upon request.
5TENSION CLAMPS AND JOINTS
84
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression dead end clamp with clevis for ACSR
according to international standards
material: aluminium, extruded; steel, hot dip galvanized
Die No. dimensions inmmL.-Nr.
cond.cross section sq code cond.Ø mm
Al St A B Cbolt kg
4463.0039 PETREL 11,70 28 15 275 190 20 19 1,604463.0009 LARK 15,50 25 13 272 175 20 19 2,004463.58/1 DORKING 16,00 30 19 325 200 20 19 1,704463.84 PARTRIDGE 16,28 28 13 290 185 20 19 1,704463.88/2 WOLF 18,13 30 15 330 235 20 19 1,734463.0079 ORIOLE 18,82 30 15 350 200 20 19 1,604463.87/1 LYNX 19,56 30 17 330 217 20 19 1,864463.0107 PELICAN 20,70 34 9 320 200 20 19 1,704463.85/1 PANTHER 21,00 34 17 385 220 20 19 1,994463.83 HAWK 21,80 34 15 370 220 20 19 2,224463.95 DOVE 23,55 38 17 365 245 20 19 2,414463.132 PEACOOK 24,19 38 15 330 245 20 19 2,404463.0035 SQUAB 24,56 46 17 370 250 20 19 3,304463.0085 SCOTER 25,90 42 21 400 250 20 19 3,304463.0031 TERN 26,90 42 15 355 250 20 19 3,004463.97 CONDOR 27,72 46 17 420 290 20 19 3,454463.108 DRAKE 28,11 46 21 435 290 20 19 3,984463.86/6 ZEBRA 28,62 46 19 425 290 20 19 4,204463.94/1 CARDINAL 30,42 50 21 467 290 20 19 4,104463.99/2 CURLEW 31,68 52 21 460 315 20 19 5,004463.109 BLUEJAY 31,96 52 15 450 315 20 19 4,474463.102 FINCH 32,85 52 21 495 315 20 19 4,674463.0098 GRACKLE 33,97 52 23 495 315 20 19 4,604463.101 PHEASANT 35,10 56 24 470 320 20 19 4,904463.75 BOBOLINK 36,23 58 17 460 315 20 22 5,48
Other dimensions and types are available upon request.
5 TENSION CLAMPS AND JOINTS
85
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression dead end clamp with eye for AAAC
according to DIN Standard
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.cross section sq mm cond.Ø mm
Al A B C Dkg
4455.0059 366 24,80 42 375 250 16 18 2,90
Other dimensions and types are available upon request.
Compression dead end clamp with eye for AAAC
according to international standards
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.cross section sq code cond.Ø mm
Al A B C Dkg
4455.135 SULFUR 33,80 52 580 350 19 20 4,804455.0111 ASTER 1144 44,00 76 820 400 24 27 10,90
Other dimensions and types are available upon request.
5TENSION CLAMPS AND JOINTS
86
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression dead end clamp with clevis for AAAC
according to DIN Standard
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.cross section sq mm cond.Ø mm
Al A B Cbolt kg
4455.109/2 95 12,50 22 235 160 20 19 1,254455.92 150 15,75 28 290 180 20 19 1,604455.78 175 18,34 30 330 230 20 19 1,804455.118 228 19,60 32 330 210 20 19 1,834455.94 240 20,25 34 370 245 20 19 1,904455.102 298 22,40 38 360 240 20 19 2,624455.0099 300 22,50 38 360 245 20 19 2,404455.114/3 366 24,85 42 375 250 20 19 2,904455.0039 400 26,00 42 380 250 20 19 3,404455.113/2 625 32,60 52 475 335 20 19 4,30
Other dimensions and types are available upon request.
Compression dead end clamp with clevis for AAAC
according to international standards
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.cross section sq code cond.Ø mm
Al A B Cbolt kg
4455.0109 ALLIANCE 14,30 25 280 180 20 19 1,404455.63 ASH 17,40 28 290 180 20 19 1,804455.95 CAIRO 19,89 34 370 245 20 19 2,004455.0069 SYCAMORE 22,60 38 380 245 20 19 2,404455.132 FLINT 25,13 42 375 250 20 19 3,204455.93 GREELEY 28,14 46 500 320 20 19 3,904455.100/5 YEW 28,42 46 425 290 20 19 3,124455.70/1 ALMELEC 31,05 50 480 290 20 19 4,154455.0029 RUBUS 31,50 52 570 315 20 19 4,704455.130 ARAUCARIA 37,26 64 628 360 20 22 8,10
Other dimensions and types are available upon request.
5 TENSION CLAMPS AND JOINTS
87
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression dead end clamp with eye
for steel and ACS-conductor
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.cross section sq mm/
codecond.Ø mm
Al A B Ckg
4459.10 ST 50 9,00 17 155 20 19 0,464458.11/1 AW 7 NO. 8 AWG 9,78 19 155 20 18 0,50
Other dimensions and types are available upon request.
Compression dead end clamp with clevis
for steel and ACS-conductor
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.cross section sq mm/
codecond.Ø mm
Al A Bbolt kg
4458.18/2 AW 7 NO. 9 AWG 8,71 17 180 20 19 0,704458.23 AW 95 12,50 23 200 20 19 0,004458.29 AW 19 NO. 9 AWG 14,55 30 270 20 19 1,404458.30 ST IV 150 15,80 33 270 20 19 2,00
Other dimensions and types are available upon request.
5TENSION CLAMPS AND JOINTS
88
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression joint for ACSR
according to DIN Standard
material: aluminium, extruded; steel, hot dip galvanized
Die No. dimensions in mmL.-Nr.
cond.cross section sq mm cond.Ø mm
Al St A Bkg
4854.11/D 44/32 11,20 25 15 380 150 0,464854.04 70/12 11,70 18 9 330 100 0,184854.29/D 50/30 11,70 25 15 370 140 0,504854.05 95/15 13,60 22 9 310 80 0,204854.06 120/20 15,50 25 13 360 130 0,404854.05/1/D 95/55 16,00 30 19 420 170 0,754854.07/D 150/25 17,10 28 13 390 115 0,504854.08/2D 185/32 19,00 30 15 440 150 0,604854.08 185/30 19,00 30 15 440 120 0,634854.09 210/35 20,30 34 15 490 160 0,704854.64/D 230/30 21,00 34 15 470 140 0,824854.18/D 210/50 21,00 34 17 500 170 1,204854.10 240/40 21,90 34 15 530 160 0,714854.10/D 240/40 21,90 34 15 470 140 0,764854.68/D 265/34 22,40 38 15 520 150 0,944854.20 257/60 23,10 38 21 500 160 1,234854.12 300/50 24,50 38 17 455 130 0,904854.12/D 300/50 24,50 38 17 540 170 1,134854.70/D 340/30 25,00 38 15 525 140 1,024854.21 310/100 26,60 42 25 610 230 1,904854.16/D 385/35 26,70 42 15 510 140 2,464854.13/D 380/50 27,00 42 17 560 170 1,454854.22 340/110 27,66 46 28 750 290 2,504854.22/D 340/110 27,66 46 28 760 290 2,504854.72/D 435/55 28,80 46 19 670 170 1,904854.56/10 490/65 30,60 50 21 680 160 2,304854.15/D 560/50 32,20 52 17 680 170 2,464854.25/D 550/70 32,40 52 21 730 230 2,754854.99 635/117 35,60 58 28 820 290 4,404854.26 680/85 36,00 58 23 760 230 3,654854.0155 1055/45 43,00 76 17 720 130 5,80
The L.-Nr. ..../D are equipped with external tube end tapers.Other dimensions and types are
available upon request.
5 TENSION CLAMPS AND JOINTS
89
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression joint for ACSR
according to international standards
material: aluminium, extruded; steel, hot dip galvanized
Die No. dimensions in mmL.-Nr.
cond.cross section sq code cond.Ø mm
Al St A Bkg
4854.0019 PETREL 11,70 28 15 380 130 0,604854.87 MINORCA 12,20 25 15 360 120 0,404854.30 PERNICE 14,80 25 13 360 120 0,504854.0033 DOTTEREL 15,40 30 19 380 130 0,704854.58 DORKING 16,00 30 19 380 130 1,104854.48 PARTRIDGE 16,28 28 13 390 115 0,504854.57 COCHIN 16,85 34 21 520 170 1,404854.51 OSTRICH 17,28 28 13 390 115 0,504854.46/1 WOLF 18,13 30 15 455 130 0,664854.41 LINNET 18,30 30 15 440 120 0,704854.43/1 LYNX 19,56 30 17 455 130 0,664854.59 IBIS 19,88 34 15 450 120 0,704854.67 PANTHER 21,00 34 17 560 190 1,004854.62 FLICKER 21,48 34 15 530 160 0,904854.47 HAWK 21,80 34 15 530 160 0,904854.0156 HEN 22,40 38 19 580 190 1,304854.31 DOVE 23,55 38 17 525 160 0,984854.0042 PEACOCK 24,20 38 15 525 160 0,904854.28/10 GROSBEAK 25,15 42 17 495 130 1,104854.0002 BISON 27,00 42 17 530 160 1,304854.60 CONDOR 27,72 46 17 580 130 1,684854.23 DRAKE 28,11 46 21 620 160 1,904854.45/1 ZEBRA 28,62 46 19 600 130 1,904854.56 CARDINAL 30,42 50 21 680 160 3,104854.25/1 CURLEW 31,68 52 21 650 190 2,454854.83 BLUEJAY 31,98 52 15 640 130 2,404854.88 FINCH 32,85 52 21 710 190 2,274854.66 PHEASANT 35,10 56 24 670 160 2,864854.26/1 MARTIN 36,17 58 23 760 230 3,854854.42 BOBOLINK 36,23 58 17 650 130 2,754854.0085 FALCON 39,26 64 25 940 230 5,004854.0053 CHUKAR 40,70 64 21 940 230 4,804854.84 BLUEBIRD 44,76 70 23 820 230 6,00
Other dimensions and types are available upon request.
5TENSION CLAMPS AND JOINTS
90
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression joint for AAAC
according to DIN Standard
material: aluminium, extruded
dimensionin mmL.-Nr.
cond.cross section sq mm cond.Ø mm
Al Akg
4853.03 50 9,00 16 155 0,064853.0058 75 11,25 18 165 0,104853.05 95 12,50 20 165 0,104853.10 150 15,80 28 320 0,404853.08 185 17,50 28 375 0,364853.41 240 20,30 34 450 0,704853.11 248 20,45 34 450 0,704853.0034 300 22,50 38 410 0,804853.22 366 24,85 42 450 0,954853.12 400 26,00 42 450 0,954853.13 500 29,10 46 520 1,274853.15/1 570 31,05 50 630 2,004853.110 600 31,90 52 373 2,104853.103 800 36,80 64 870 4,60
Other dimensions and types are available upon request.
Compression joint for AAAC
according to international standards
material: aluminium, extruded
dimensionin mmL.-Nr.
cond.cross section sq code cond.Ø mm
Al Akg
4853.0038 ALLIANCE 14,30 25 280 0,304853.109 ELM 18,80 30 375 0,404853.37 CAIRO 19,88 34 450 0,704853.0022 SYCAMORE 22,60 38 450 0,904853.0007 UPAS 24,71 42 450 0,954853.104 FLINT 25,13 42 450 1,004853.36 GREELEY 28,00 46 690 1,804853.100 YEW 28,42 46 520 1,274853.0006 RUBUS 31,50 52 373 0,70Z4853.0047 ARAUCARIA 37,26 64 870 4,60
Other dimensions and types are available upon request.
5 TENSION CLAMPS AND JOINTS
91
Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Compression jointfor steel and ACS-conductor
material: steel, hot dip galvanized
dimensionin mmL.-Nr.
cond.cross section sq mm/
codecond.Ø mm
Al Akg
4858.0020 ST 7 7 15 160 0,154858.08 AW 38 7,80 15 160 0,164858.0007 ST 5/16" 7,92 15 160 0,154858.12 ST 50 9 17 190 0,304858.0002 ST 3/8" 9,15 19 225 0,404912.09 ST 9.52 MM 9,52 19 220 0,354912.01 AW 7 NO. 8 AWG 9,78 19 225 0,404858.13 ST 70 10,50 21 225 0,434858.22 ST 7/16" 11,11 21 225 0,454858.05/1 ST 79 11,50 23 260 0,604858.19/1 ST 11,80 11,80 23 260 0,604858.0029 ST 12 12 23 260 0,604912.05 AW 7 NO. 6 AWG 12,34 23 260 0,594858.14 ST 95 12,50 23 260 0,584858.21 ST 12,70 12,70 23 260 0,554912.0003 AW 7 NO. 5 AWG 13,87 23 360 1,304858.0018 AW 19 NO. 9 AWG 14,55 30 410 1,604858.25 ST 150 15,80 33 410 2,20
Other dimensions and types are available upon request.
Repair sleevefor aluminium based conductors
material: aluminium
dimensionin mmL.-Nr. cond.Ø mm
Al Akg
4880.0004 11,7 18 150 0,044880.37/2 13,8 - 14,7 25 200 0,204880.17 14,8 - 15,7 25 200 0,154880.18 15,6 - 16,6 28 200 0,204880.22 16,7 - 17,6 28 200 0,204880.80/15 17,4 - 18,4 30 200 0,234880.80/17 18,5 - 19,6 30 200 0,224880.80/18 19,6 - 21,4 34 200 0,304880.27/1 21,5 - 22,8 38 220 0,384880.24 22,9 - 23,8 38 220 0,404880.19 23,9 - 25,2 42 220 0,504880.50 25,3 - 27,1 42 250 0,534880.28 26,3 - 28.1 46 250 0,694880.29 27,7 - 29,0 46 250 0,614880.20 28,6 - 30,5 48 250 0,684880.26 30,6 - 32,9 52 250 0,804880.42 33,8 - 35,1 56 280 1,064880.30 34,4 - 36,6 58 280 1,50
5TENSION CLAMPS AND JOINTS
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material: aluminium
dimensionin mmL.-Nr. cond.Ø mm
Al Akg
4880.31 36,2 - 38,6 64 280 1,504880.32 47,8 - 50,9 76 350 2,22
For damages of maximum 25% of the strands of the outer layer.
The repair sleeves are made up of two halves that can be slid over the damaged point of the
conductor. In case of major damage, it will be recommended to use heliformed rods.
Other types are available upon request.
Repair sleevefor steel and ACS-conductor
material: aluminium
dimensionin mmL.-Nr. cond.Ø mm
Al Akg
4881.17 8,71 17 150 0,204881.0002 9,15 19 150 0,304881.0006 9,80 19 150 0,404881.19 10,50 19 150 0,254881.24 10,50 21 150 0,294881.0009 11,00 21 150 0,304881.23/2 11,50 23 150 0,404881.23/4 12,34 23 150 0,40
For damages of maximum 25% of the strands of the outer layer.
The repair sleeves are made up of two halves that can be slid over the damaged point of the
conductor. In case of major damage, it will be recommended to use heliformed rods.
5 TENSION CLAMPS AND JOINTS
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PARALLEL GROOVE CLAMPS
06
Contents
6 PARALLEL GROOVE CLAMPS
95
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General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Parallel groove clamp with serrated grooves, forged, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . 98
Parallel groove clamp for earthwires and phase tension up to 132 kV, for aluminium based conductors . . . 99
Parallel groove clamp, for steel and copper conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Parallel groove clamps provide electrical connection between
two conductors, and mainly used in jumper loops with wedge
type suspension clamps.
Other applications include branch
connection in substations, and
ground wire eart continuity con-
nections.
Parrallel groove clamps are also
used in security loops of sus-
pension strings, where sufficient
conductor stabilisation force is
required.
For safety reasons, it is recommen-
ded to mount at least two clamps
for one loop.
Special types are required for vibration dam-
ping loops of Brettelle dampers. Clamps for
Bretelle dampers see catalogue part 10.
The grooves of parallel groove clamps made
of aluminium and designed for low electrical
joint resistance and power transmission bet-
ween conductors.
The connection faces have specialised texture
surfaces to establish better electrical and me-
chanical connection.
Forged clamps have smooth outer profiles that
are particularly suited to higher voltage fields
where good corona discharge performance
is required.
Projecting ends of conductors can be pro-
tected using end caps to maintain high per-
formance.
Parallel groove clamps can be also be manufactured from extruded
aluminium alloy, and particularly suited to earth wire applications.
For power connections, this type is suitable for voltages ≤ 132kV.Clamps can also be provided with grooves of different sizes, with
a range of reducing tubes in aluminium and bimetallic material on
request (connecting Copper to Aluminium cable).
Parallel groove clamps with spacers are obtainable for all bundle
configurations.
This is advantageous at using wedge clamps for conductor tensioning.
General
Loop guidance of a
tension string
Security loop for a
suspension string
Parallel groove
clamp with a
dead end cap
Parallel groove
clamp with a
reducing tube
6PARALLEL GROOVE CLAMPS
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Jumper spacers
Parallel groove clamps will also be used for
spacing bundle conductors, when wedge
type tension clamps are used to fix the con-
ductors.
Jumper spacers
for twin bundles
Parallel groove
clamp for
copper conductors
Parallel groove clamps for copper conductors can be delivered in a
forged and cast design.
All clamps have are manufactured in high corrosion resistance ma-
terials, compatible with the conductors.
Clamping screws can be supplied in stainless steel or hot dip gal-
vanized steel.
Jumper spacers for
triple bundles (left)
and four bundles
(right)
Various types
for al l con-
ductor confi-
gurations are
available upon
request.
6 PARALLEL GROOVE CLAMPS
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1PA100-020
1PA100-070
1PA100-140
1PA100-260
1PA100-200
1PA100-350
1PA100-460
1PA100-050
1PA100-100
1PA100-160
1PA100-310
1PA100-230
1PA100-360
1PA100-480
9,0 - 9,9
12,6 - 14,9
17,2 - 19,0
25,8 - 27,8
21,1 - 23,4
30,0 - 31,9
33,0 - 36,2
12,3 - 12,5
15,0 - 17,1
19,1 - 21,0
27,9 - 29,9
23,5 - 25,7
32,0 - 33,4
36,0 - 39,0
70
90
100
130
120
140
180
65
90
100
130
120
140
220
2
3
3
3
3
3
4
2
3
3
3
3
3
5
0,28
0,36
0,42
0,90
0,83
1,20
2,50
0,25
0,40
0,60
0,80
0,80
1,39
3,40
material: aluminium, forged; steel, hot dip galvanized
L.-Nr.: kgdimensions in mm
cond.Ø Ascrews
Parallel groove clamps with reducing and bimetallic are available upon request.
Clamps with screws made of hot-dip-galvanized steel grade 8.8 as well as copper clamps can
also be supplied.
If parallel groove clamps are used for Bretelle dampers, the installation distances can be
calculated.
Parallel groove clamps with spacers are available for all bundle configurations upon request.
The L.-Nr.: are for parallel groove clamps with stainless steel bolts A2-F80.
Parallel groove clamps with galvanized bolts have a + instead of a - within the number.
as an example: 1PA100+350
Parallel groove clamp with serrated grooves, forged
for aluminium based conductors
6PARALLEL GROOVE CLAMPS
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Parallel groove clamp for earthwires and phase tension up to 132 kV
for aluminium based conductors
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A screwskg
4502.11 8,1 - 11,7 80 3 0,234502.12 11,8 - 15,8 95 3 0,414502.13 15,9 - 19,2 100 3 0,504502.14 19,3 - 24,8 110 3 0,80
These types can be used for nominal voltages up to 132 kV and can also be delivered with one
or two screws.
Parallel groove clamps with reducing sleeves or aluminium-copper-sleeves are available upon
request.
Other types are available upon request.
Parallel groove clampfor steel and copper conductors
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A screwskg
4503.10 5,1 - 8,1 60 2 0,364503.11 8,2 - 11,6 65 2 0,434503.12 11,7 - 15,7 65 2 0,74
Parallel groove clamps with one or three screws are available upon request.
Other types are available upon request.
6 PARALLEL GROOVE CLAMPS
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ARCING DEVICES
07
Contents
7 ARCING DEVICES
101
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General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Upper arcing horn for disc insulators, single . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Lower arcing horn for disc insulators, single . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Upper arcing horn for disc insulators, double . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Lower arcing horn for disc insulators, double . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Upper single path arcing ring for disc insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Lower single path arcing ring for disc insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Lower single path arcing ring for disc insulators, with ball . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Lower single path arcing ring for disc insulators, tube material, with ball . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Single path arcing ring for longrod insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Single path arcing ring for longrod insulators, with ball . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Single path intermediate arcing ring for longrod insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Lower single path arcing ring for longrod insulators, tube material, with ball . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Grading ring for composite insulators, tube material, with clamp �xing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Fork type arcing ring for longrod insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Fork type intermediate arcing ring for longrod insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Fork type arcing ring for longrod insulators, with ball . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Fork type arcing ring for longrod and composite insulators, tube material, with ball . . . . . . . . . . . . . . . . . . . . . . 115
Bundles arcing ring for composite insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Single arcing ring racket type tube material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Double arcing ring racket type tube material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Single arcing ring racket type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Double arcing ring racket type solid material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Arcing devices must fulfil two functions:
- Even distribution of the electrical field along the insulator string,
suppressing partial discharges and corona effects. To achieve
this control, the design, shape, size and positioning are optimi-
sed to shield tension and suspension clamps. For higher levels of
electrical stress control, special corona rings guarantee suppressi-
on within required limits.
- Protecting the insulator from the effects of a power arc
requires that the device must absorb the full effect of the power arc,
acting as a sacrificial component to avoid insulator damage.
The device design takes and controls an instantaneous high energy
power arc flashover, that has sacrificial parts specifically positioned that
may partially burn away to protect the insulator. These events may be
triggered by insulator pollution during overvoltage surges.
Once the arcing device has collected the root of the arc, the fitting
passes energy between the sacrifiacial burning points instantaniuosly.
The position relative to the insulator is important, and must be
large enough to protect the insulator from the extreme high tem-
perature and radiated heat.
To ensure the burn flash over point stabilises the arc to burn one
point, the power must be fed unidirectionally, and allow electro-
magnetic forces to act upon the power arc. Where replacement
of arcing devices become necessary, open rings will allow easy
installation, and create migration to the intended burn point.
Design of the open ring ends must also avoid corona discharge.
The installation arrangement of arcing devices
The installation of arcing devices will always need adaption to
meet performance requirements. The tower support structure
and shape, including the insulator string design affects the
design of the installation. Where the design is correct, power arc
direction will avoid the insulator. Where the power arc direction
close to the conductor is unavoidable, special attention needs to
be made regarding the design of the end fittings. This ensures
that power arc enrgy is directed away from the conductors,
avoiding possible conductor damage.
Arcing devices must not restr ict
i n su la to r s t r ing movement o r
articulation caused by normal wind
energy movement.
I f necessar y, connect ing a rms
are shaped to provide necessary
clearances, and ensure that arc gaps
are maintained during normal wind
induced movement.
General
Arrangement of
arcing devices in
case of a double
suspension string
Lower one-way
arcing ring with a
long rod insulator
Bundle ring with a composite insulator after a rollover test
Arcing device for
big displacement
angles (left)
and
Arcing device for
an arrangement in
conductor direction
(right)
7ARCING DEVICES
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Short circuit capability
Short circuit capability of arcing devices depends on
the cross section through which the current flows.
As arcing devices are not mechanically loaded, a
power density of 80 A/mm2 is required. This value
guarantees a temperature rise is limited to 490°C, as
accepted by German DIN requirements. Intermedi-
ate arcing rings for long rod insulators can be made
smaller, as the initial power surge will be combined
for short durations.
The materials used for fork type arcing rings can also
be smaller, as the stress is shared by two half pieces.
Standards
Test qualification of corona resistance acc. to
EN 61284 (Overhead lines - Requirements and tests
for fittings) including power arc test requirements acc. to IEC 61467
(Insulators for overhead lines - Insulator strings and sets for lines with
a nominal voltage greater than 1000 V - AC power arc tests) are both
made on complete insulator strings.
The values required for corona
extinction voltage are partly stan-
dardized in national Standards.
Test configurations are described
in EN 61284, where results can
be verified. Testing arrangements,
including system calibration, test
current, number and duration of
short circuit currents, are all de-
scribed in IEC 61467.
Connection interface dimensions
for arcing devices are made acc. to
DIN 48068 (Protective fitting
attachment; for overhead lines,
connection dimensions)
For 24 mm ball fittings, arcing devices are fixed with 2 screws M14 at
32 mm centres, to withstand short circuit currents that may occur.
Double screw fixing are also possible acc. to Swiss and Italian
Standards (see Part 3 of the catalogue).
Arcing devices of the “racket” type will be fixed to the yokes by using
two screws M 14 at 60 mm centres.
Corona rings are fixed individually depending on possibilities within
the string design.
Cascaded
power arcs are
united to one
overall power arc
Excerpt from
IEC 61467
inspection and
testing for
insulator strings
7 ARCING DEVICES
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Closed arcing rings
For compact lines, distances are smaller which can
lead to corona discharge problems.
During short circuit events, nowadays transmission
lines will be switched out rapidly. Therefore the ef-
fects of power arc faults will be limited. This creates
the possibility to use closed rings, and provide incre-
ased corona voltage extinction performance.
Composite insulators normally require a corona ring
on both ends in order to avoid electrical field stress
at the material transition points of the end fittings.
This also helps to prevent occurrence of partial discharges and co-
rona phenomena, which can lead to insulating material degradation
of the composite insulators.
In many cases, it is useful to install an arcing ring in addition to
the corona ring, as corona rings generally do not support arcing
protection requirements.
The corona ring will be connected to the insulator on
the end fitting by a suitable clamping device.
Closed rings are also used as corona rings for
shielding suspension clamps and tension clamps on
case of ultra-high-voltage lines.
The designs of the rings are dependent on the system
voltage and performance requirements, and are ad-
apted to meet specific requirements.
Closed arcing ring
Example for
a computation
of fields
(Lapp Insulators)
Tension string with
arcing rings
Corona ring and
arcing device
- Unless otherwise specified, all ferrous components
are hot dipped galvanized acc. to EN 61284 or ISO EN 1461; Overhead lines-requirements and tests
for fittings. Where stainless steel fasteners are used,
ISO EN 3506; Mechanical properties of corrosi-
on resistant stainless steel fasteners - Part 1: Bolts,
screws and studs are specified.
- For lines constructed in higher corrosive atmo-
spheres and environments, the minimum zinc
thickness of fittings can be increased from 85
μm to 110 μm or 130 μm Microns. - All fitting assemblies supplied have identification marking
according to EN 61284; this includes manufactures mark, date
code and 1 second short circuit current withstand rating.
- Where short circuit currents are very high, it is possible to provide
a power by-pass using a shunt. Connection facilities are provided
at the attachment points.
Material
Shunt connection
for high short
circuit currents
7ARCING DEVICES
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Arcing rings for insulated crossarms
Insulated cross arms are used for compact lines, and made up of
many different types of insulating materials, or combinations of
glass, ceramic and composite insulators. The tensile insulators often
consist of two parallel strings combined with one compression load
bearing insulator, where the cross arm is made of porcelain or com-
posite materials. For these applications, specific designs of combined
arcing devises and corona rings are required.
Combinations of arcing rings
For double and triple strings sets, live string distances
should be as small as possible for safety reasons.
Arcing devices should have burn points as far as pos-
sible away from the insulators, where it is sometimes
not practical to utilise two identical arcing devices.
For long rod porcelain insulators, it is also important
to ensure arcing rings cannot cause damage to re-
maining support strings, where load transposition
failure has occurred.
Arcing rings for UHV (ultra-high voltage) and DC (direct current)
lines
For very high voltages and DC lines >500kV, arcing devices listed in
the tables may not be suitable in terms of corona resistance. These
arcing devices utilise tube diameter ≤60mm. For all other parts, larger fittings for very high voltages and mechanical loadings will
be required.
Bundle rings
The material used to manufacture the bundle ring guarantees rapid
transmission of short circuit current, with excellent corona behavi-
our. These rings can also be used on composite insulated cross arms,
where they reduce electrical field stress, and act as arcing device
protection.
Bundle ring
Arcing ring for
insulated crossarms
Combination of
arcing rings for
double suspension
strings
Arcing rings for
UHV lines
7 ARCING DEVICES
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Arcing rings for rigid V-strings
The end of rigid V-strings will be connected to yoke
plates at the live side, with a single arcing device at-
tached. This will act to protect both insulator strings,
and should be designed according to the one-way
principle, of leading the power arc away from the
insulator.
Adjustable arcing devices
In order to protect the equipment of substations, nominal gaps can
be adjusted on the towers close to the substation. This is achieved
by use of adjusting arcing devices that can provide arc gap adjust-
ment. Double insulator strings only require arcing protection devices
attaching to one string.
For longer insulators, for example in polluted environments, arcing
devices are available to offer the correct level of protection for all
insulation creepage length requirements.
Corona rings for supporting insulators and devices
Open and closed aluminium rings for shielding in different tube
thicknesses and ring diameters are available.
Arcing rings for
rigid V-strings
Adjustable
protective horn
Corona ring
for post
insulators
Tension string with
cap and pin type
insulators with long
arcing devices
7ARCING DEVICES
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Upper arcing horn for disc insulators, single
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B CkA 1s kg
4726.05 190 250 16 16 0,754726.22 190 250 20 25 1,054726.14/4 190 250 22 30 1,304710.20 210 250 25 40 1,70
Other types are available upon request.
Lower arcing horn for disc insulators, single
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B CkA 1s kg
4726.06 105 250 16 16 0,704726.20 105 250 20 25 0,94
Other types are available upon request.
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Upper arcing horn for disc insulators, double
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B CkA 1s kg
4725.05 200 500 16 16 1,134725.0010 190 500 22 30 2,204725.0028 190 500 25 40 2,70
Other types are available upon request.
Lower arcing horn for disc insulators, double
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B CkA 1s kg
4725.06 105 500 16 16 1,074725.25 105 500 20 25 1,58
Other types are available upon request.
7ARCING DEVICES
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Upper single path arcing ring for disc insulators
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkA 1s kg
4760.01 185 451 16 330 16 2,304760.02 185 455 20 330 25 3,704760.03 185 457 22 330 30 4,604760.04 185 459 24 330 35 5,324760.04/2 185 463 28 330 50 7,05
Suitable for disc insulators with a diameter up to 280 mm.
Bigger diameters are available upon request.
Other types are available upon request.
Lower single path arcing ring for disc insulators
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkA 1s kg
4760.22 100 455 20 330 25 3,654760.23 100 457 22 330 30 4,434760.24 100 475 24 330 35 4,954760.24/1 100 475 28 330 50 6,85
Suitable for disc insulators with a diameter up to 280 mm.
Bigger diameters are available upon request.
Suitable for nominal voltages of up to 110 kV.
Other types are available upon request.
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Lower single path arcing ring for disc insulators, with ball
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D EkA 1s kg
4760.32 100 455 20 330 40 25 3,804760.34 100 459 24 330 40 35 6,504760.0001 100 460 25 330 40 40 5,90
Arcing rings with a diameter of 330 mm can be used for disc insulators with a diameter up to 245
mm. Suitable for nominal voltages up to 220 kV.
Other types are available upon request.
Lower single path arcing ring for disc insulators, tube material, with ball
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkA 1s kg
4770.04 100 354 48 60 30 6,474770.05/3 100 354,0 48 60 40 6,904770.05 100 354,0 48 60 35 7,094770.0005 100 453,4 48 60 40 8,90
Arcing rings with a diameter of 350 mm can be used for disc insulators with a diameter up to 245
mm.
Other types are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Single path arcing ring for longrod insulators
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkA 1s kg
4750.10/1 185 340 16 200 16 1,694750.19/1 195 340 20 200 25 2,604750.17/1 198 410 20 220 25 2,904750.13/2 198 410 22 200 30 3,304750.18/1/1 198 390 22 220 30 3,504750.36 210 450 22 250 30 3,804750.45 210 400 25 220 40 4,544750.15/6 227 450 28 220 50 6,224750.16 350 470 30 260 50 8,35
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
Single path arcing ring for longrod insulators, with ball
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D EkA 1s kg
4750.40 227 370 16 200 30 16 2,104750.54/86 210 450 20 305 30 25 4,104750.32 185 350 22 170 30 30 3,044750.43 227 450 22 200 30 30 3,684750.49/3 220 400 24 220 40 35 4,504750.15/72 165 450 25 280 40 40 5,304750.55/5 290 460 28 305 80 50 7,90
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Single path intermediate arcing ring for longrod insulators
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkA 1s kg
4750.64 420 340 16 200 50 3,504750.698 454 460 16 260 50 4,054750.752 710 460 16 320 50 4,804750.66/2 396 390 22 220 50 6,80
Suitable as a lower arcing device for nominal voltages up to 380 kV.
The one second short circuit current that is stated refers to the fact that current will, in case of
short circuit, �ow only a short time through the �tting because the power arc will be united over
the upper and lower �ttings.
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
Lower single path arcing ring for longrod insulators, tube material, with ball
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D EkA 1s kg
4750.73/2 300 425 48 304 60 40 8,194750.72/1 210 460 48 354 60 40 8,704750.78/2 215 453 48 354 80 50 9,004750.70 235 460 48 354 60 30 7,504750.85/3 290 570 48 354 80 50 12,10
For multiple strings, special models can be supplied.
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Grading ring for composite insulators, tube material, with clamp �xing
material: aluminium
dimensions in mmL.-Nr.
A B C DkA 1s kg
4740.61/1 115 253,4 48,0 31,0 16 4,284740.69/A 77 304,0 48,0 46,0 - 49,0 24 2,124740.70/1/A 77 324,0 48,0 46,0 16 2,24
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
L.-Nr. 4740.61/1 made from steel.
Fork type arcing ring for longrod insulators
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkA 1s kg
4750.9051 130 320 16 205 25 2,104750.9007 165 320 16 205 25 2,164750.52/1 165 320 20 205 30 2,954750.321 165 320 20 205 40 3,314750.52/0 165 320 20 205 40 3,424750.52/7/1 210 320 20 205 40 3,604750.9852 150 455 20 340 40 4,60
Suitable as a lower arcing device for nominal voltages up to 110 kV.
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Fork type intermediate arcing ring for longrod insulators
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkA 1s kg
4750.60/0 330 320 16 205 50 3,884750.9005 410 320 16 205 50 4,104751.9301 390 360 16 240 50 5,604750.52/30 480 395 16 280 50 4,90
Suitable as a lower arcing device for nominal voltages up to 380 kV.
The one second short circuit current that is stated refers to the fact that current will, in case of
short circuit, �ow only a short time through the �tting because the power arc will be united over
the upper and lower �ttings.
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
Fork type arcing ring for longrod insulators, with ball
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D EkA 1s kg
4750.9857 110 470 16 340 40 25 3,204750.52/7/2 165 335 20 205 40 45 4,004750.52/2 165 360 20 205 60 40 4,904750.52/7/3 225 335 20 205 40 40 4,254750.9303 315 375 20 240 40 40 5,00
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Fork type arcing ring for longrod and composite insulators, tube material, with ball
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D EkA 1s kg
4750.52/24 250 455 48 304 85 50 7,034740.9504 240 490 48 344 85 50 7,634740.9511 320 490 48 344 85 50 7,804750.52/24/3 200 485 51 298 85 40 10,254750.52/27 210 545 51 348 85 40 10,20
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
Bundles arcing ring for composite insulators
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C DkA 1s kg
4755.06 300 525 24 400 63 17,404755.12/5 300 424 25 310 40 15,004755.12/4 330 424 25 310 40 15,904755.12/6 370 424 25 310 50 15,454755.12/1 295 427 28 310 40 15,60
Similar corona rings can also be delivered for disc insulators and long-rod insulators made of
porcelain. All corona rings do not only provide excellent corona resistance for nominal voltages
of up to 400kV but also by ensuring that the power arc, in case of a short circuit, will travel to
the end burning point very rapidly.
Other types are available upon request.
Arcing rings with 2 bolt attachement on request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Single arcing ring racket type tube material
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D EkA 1s kg
4727.02/13 220 370 38 500 60 40 3,604727.04/15 245 450 48 700 60 50 7,00
Other types are available upon request.
Double arcing ring racket type tube material
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D EkA 1s kg
4727.04/12 245 450 38 600 60 40 8,504727.04/11 145 450 48 700 60 50 16,744727.02/4 245 450 48 500 60 50 12,504727.04/4 245 450 48 700 60 50 14,40
Other types are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Single arcing ring racket type
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D EkA 1s kg
4729A09 130 285 20 600 80 32 3,924729A10 190 285 20 600 80 32 4,204729A05/1 190 290 20 200 32 2,804729A05 105 300 20 200 32 2,20
The L.N. 4729A05 and 05/1 equipped with one bolt for connection according to DIN 48608.Other
types are available upon request.
Double arcing ring racket type solid material
material: steel, hot dip galvanized
dimensions in mmL.-Nr.
A B C D EkA 1s kg
4729A09/1 130 285 20 600 80 32 7,804729A10/1 190 285 20 600 80 32 8,094729A06 105 290 20 200 32 4,204729A06/1 190 290 20 200 32 4,75
Other dimensions and types are available upon request.
The L.N. 4729A06 and 06/1 equipped with one bolt for connection according to DIN 48608.
7 ARCING DEVICES
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EARTH WIRE FITTINGS
08
Contents
8 EARTH WIRE FITTINGS
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General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
C-bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Suspension clamp with bolt, with straps, for steel and copper conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Suspension clamp with bolt, with shackle, for steel and copper conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Suspension clamp with bracket, casted, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Suspension clamp with bracket, forged, for aluminium based conductors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Suspension clamp with bracket, for steel and copper conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Earthwire bracket with parallel groove clamp, double, for aluminium based conductors . . . . . . . . . . . . . . . . . . 126
Earthwire bracket with parallel groove clamp, triple, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . 126
Earthwire bracket with parallel groove clamp, quad, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . 127
Shunt copper, insulated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Shunt aluminium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Earthing clamp, aluminium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Earthing clamp, steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Numbering system, modular Aircraft Warning Marker Aurora . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Ground wires provide earth protection for overhead power lines
and protecting from lightning strikes.
They grounded system releases
high energy safety, providing mi-
nimum disruption to the power
delivery system.
Earth wires should be mounted at
the highest positions of support
structures to provide highest le-
vels of protection.
Eathwires are mainly steel coated
wires, eg ACS. ACSR conductors
are also commonly used.
At suspension points, oscillating suspension clamps are mostly
used allowing controlled movement, and typically mounted onto
C- brackets providing protection from vibration. This system offers
significant vibration protection advantages over rigid fastening, by
allowing controlled freedom of movement preventing damage.
C–brackets
C-bracket supports offered in the
table provide special type options,
e.g. higher degrees of movement
at the hinge connection, providing
movement >200° for the suspension
clamp.
Full vertical orientation of the clamp
is also possible.
C-bracket mounting base plates can
also be adapted to suit specific tower
mounting plates.
A type with a central plate is also
available.
General
Example for the
suspension
of an earthwire
suspension clamp
(left) and
example for a
tension point
(right)
C-bracket with
higher degree of
movement (left)
and
C-bracket with a
central plate (right)
Earthwire C-bracket
with
suspension clamp
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Earthwire suspension and tension brackets
There are many options available, both with
and without earth clamps. If only one con-
ductor is to be clamped, the opposite groove
can be fitted with a filler piece. Bracket at-
tachments are not supplied with screws as
standard. These can be provided separately
once attachment details are confirmed. Dif-
ferent clamp bore sizes and spacing are also
available, complete with corresponding screw
lengths and sizes. Tension brackets can also be
adapted to suit specific applications.
Groundwires tension clamps fittings are
commonly wedge, compression or helical
types, all describled in part 5 and part 18.
To faciliate measurement of the earthing resi-
stance insulating acessories are available for
suspension and tension sets, which must then
be earthed to the support structure by means
of flexible conections.
To ensure low electrical resistance of the earth
grounding system, earth bonding accesso-
ries are used to bond tension and suspension
brackets to the tower structure. A range of
flexible earth bonds are used and available.
Warning Markers
Warning Markers are installed on groundwires to warn low flying
aircraft of the elevated obstacles. These are generally positioned on
routes near airports and elevated spans on the uppermost earthwire
cable. The warning device consists of two hemispheres attached to
the groundwire by two bolted clamps. The Markers are 600 mm
diameter; all other details available on request.
The Warning Markers can be delivered in three different Types of UV
and ozone resistant colours - red, orange and white or alternating -
white/orange or white/red.Warning Marker
Earthwire bracket
Groundwire
bracket with
insulating
accessories
Reflecting Aircraft Warning Markers ‚AURORA‘
The Aircraft Warning Marker is provided with a reflecting speial foil
that helps to guarantee that its visibility is increased significantly,
especially at dawn and at night. Clamping systems that enable easy
installation guarantee rapid and safe assembly from a cable trolley
as well as from a helicopter.
The Aircraft Warning Marker is designed to withstand the most
severe environmental conditions and is equipped with clamps that
are suitable for all conductor types with elastomere inserts that will
help to protect the conductor. A key feature is the UV resistance of
the plastic body that ensures the colour is maintained for many years.
Reflecting
Aircraft
Warning Marker
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Fittings for fibre optic cables can be found in Part 18 of the catalo-
gue.
Suspension clamps, tension clamps, and conductor attachment
parallel groove clamps are described in Parts 4, 5 and 6.
Other accessories, shackles, links, turnbuckles and materials used
can be found in Part 3.
Heliformed products according to Part 4, 5.
For Vibration control devices, please refer to Part 10.
Note about this part of the catalogue
- For special cases where big dynamic loads may occur at low
temperatures, fittings made of low-temperature (cryogenic)
steels are available.
- For lines constructed in higher corrosive atmospheres and
environments, the minimum zinc thickness of fittings can be
increased from 85 μ to 110 μ or 130 μ Microns. - All fitting assemblies supplied have identification marking
according to EN 61284; this includes manufactures mark and
date code, specified minimum mechanical failure load, and 1 se-
cond short circuit current withstand rating.
Eye-clevis connections are designed acc. to IEC 61471 and
DIN 48074 - Eyes and clevises; connecting dimensions, Bolts acc.
to DIN 48073 - Connecting bolts for overhead power lines. Bolt
security split pins are manufactured in stainless steel. Copper tin-
plated types can be also be supplied.
- All materials used are fully compatible with the conductor appli-
cation. For example, clamps attached to aluminium based con-
ductors are manufactured from high strength corrosion resistant
aluminium alloys.
- Unless otherwise specified, all ferrous components are hot dip-
ped galvanized acc. to EN 61284 or ISO EN 1461; Overhead lines-
requirements and tests for fittings. Where stainless steel fasteners
are used, ISO EN 3506; Mechanical properties of corrosion resi-
stant stainless steel fasteners - Part 1: Bolts, screws and studs are
specified.
Material
8EARTH WIRE FITTINGS
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C-bracket
material: steel, welded, hot dip galvanized
dimensions in mmL.-Nr.
A B C D E
max.vertical load
kN
max.horizontal load
kNkg
4654.01S 265 20 90 18 20 30 15 13,654654.03 310 20 90 18 20 30 15 18,404654.04 310 20 90 18 20 40 70 23,204654.01 265 20 90 18 20 45 20 12,80
C-brackets for conductor uplift and with other hole centres or equipped with insulating accessories
are available upon request.
Fastening screws can be delivered upon request.
Other types are available upon request.
Suspension clamp with bolt, with straps
for steel and copper conductors
material: malleable or ductile iron, hot dip galvanized; steel, hotdip galvanized
dimensions in mmL.-Nr.
cond.Ø A B Cbolt kN kA 1s kg
4337.02/5 6,0 - 12,7 130 100 20 19 55 15 1,804337.00 9,0 - 16,5 210 150 20 19 120 32 3,10
Other dimensions are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Suspension clamp with bolt, with shackle
for steel and copper conductors
material: malleable or ductile iron, hot dip galvanized; steel, hotdip galvanized
dimensions in mmL.-Nr.
cond.Ø A B Cbolt kN kA 1s kg
4337.02/4 6,0 - 12,7 130 100 52 16 120 18 1,504337.00/1 9,0 - 16,5 210 100 52 19 80 16 2,51
Other dimensions are available upon request.
Suspension clamp with bracket, casted
for aluminium based conductors
material: aluminium, casted; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C D EkN kA 1s kg
4616.04 9,0 - 16,5 210 35 90 18 90 100 22 2,604616.05 16,5 - 22,1 230 45 90 18 90 120 30 3,104616.07 25,0 - 32,0 250 50 90 18 90 130 32 3,40
Suspension clamps with brackets having other hole centres and with insulating accessories are
available upon request.
Fastening screws can be delivered upon request.
Other types are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Suspension clamp with bracket, forged
for aluminium based conductors
material: aluminium, forged; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C D EkN kA 1s kg
4616.10 13,5 - 17,5 170 35 90 18 90 100 32 3,104616.12 18,5 - 23,0 190 50 90 18 90 80 32 2,26
Suspension clamps with brackets having other hole centres and with insulating accessories are
available upon request.
Fastening screws can be delivered upon request.
Other types are available upon request.
Suspension clamp with bracket
for steel and copper conductors
material: malleable or ductile iron, hot dip galvanised
dimensions in mmL.-Nr.
cond.Ø A B C D EkN kA 1s kg
4615.01 6,0 - 12,7 130 50 90 18 90 100 16 2,644615.02 9,0 - 16,5 210 60 90 18 90 50 22 3,37
Suspension clamps with brackets having other hole centres and with insulating accessories are
available upon request.
Fastening screws can be delivered upon request.
Other types are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Earthwire bracket with parallel groove clamp, double
for aluminium based conductors
material: aluminium; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C D Ebolt kN kA 1s kg
4652.02 8,2 - 11,7 230 21 90 18 90 19 100 30 3,894652.03 11,8 - 15,8 230 21 90 18 90 19 100 20 3,884652.04 15,9 - 19,2 230 21 90 18 90 19 100 20 4,054652.06/8 17,3 - 19,2 300 20 90 18 90 19 230 40 7,604652.06/1 19,1 - 21,0 300 20 90 18 90 19 230 40 7,804652.06/2 21,1 - 23,4 300 20 90 18 90 19 230 40 8,37
Earth wire brackets without parallel groove clamps or with parallel groove clamps that are made
of other materials and have other hole centres can be delivered upon request.
Fastening screws can be delivered upon request.
Filling pieces for the clamp groove can be delivered, if necessary.
Other types are available upon request.
Earthwire bracket with parallel groove clamp, triple
for aluminium based conductors
material: aluminium; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C D E Fbolt kN kA 1s kg
4653.10/1 8,20 - 11,70 222 21 90 18 90 151 19 160 32 5,674653.13 11,80 - 15,80 222 21 90 18 90 151 19 160 32 7,604653.09/1 15,80 - 19,20 214 21 90 18 90 148 19 160 32 5,85
Earth wire brackets without parallel groove clamps or with parallel groove clamps that are made
of other materials and have other hole centres can be delivered upon request.
Fastening screws can be delivered upon request.
Filling pieces for the clamp groove can be delivered, if necessary.
Models with only one parallel groove clamp are available upon request.
Other types are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Earthwire bracket with parallel groove clamp, quad
for aluminium based conductors
material: aluminium; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C D Ebolt kN kA 1s kg
4653.40/2 8,20 - 11,70 252 21 90 18 90 19 160 32 6,604653.40 11,80 - 13,00 252 21 90 18 90 19 160 32 6,624653.0001 15,90 - 19,20 252 21 90 18 90 19 160 32 5,804653.40/1 19,30 - 24,60 252 21 90 18 90 19 160 32 7,00
Earth wire brackets without parallel groove clamps or with parallel groove clamps that are made
of other materials and have other hole centres can be delivered upon request.
Fastening screws can be delivered upon request.
Filling pieces for the clamp groove can be delivered, if necessary.
Other types are available upon request.
Shunt copper, insulated
material: high �exible copper wire, insulated; copper, tinned; steel,hot dip galvanized
dimensions inmmL.-Nr.
A B
cross sectionsq mm screw kA 1s kg
4664.01/3A 500 17 70 M12 X 30 14 0,604664.01/5A 1000 17 70 M12 X 30 14 1,004664.01/6A 1500 17 70 M12 X 30 14 1,304664.31/1A 500 17 95 M12 X 35 19 0,72
Other lenghts and connections are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Shunt aluminium
material: aluminium; steel, hot dip galvanized
dimensionin mmL.-Nr.
A
cross sectionsq mm screw kA 1s kg
4664.35 500 70 M12 X 35 8 0,204664.35/1 1000 70 M12 X 35 8 0,304664.36 1000 95 M12 X 35 11 0,394664.0004 1000 95 M12 X 35 11 0,444664.36/1 1500 95 M12 X 35 11 0,514664.45 1000 120 M12 X 35 14 0,454664.45/10 1500 120 M12 X 35 14 0,70
Other lenghts and connections are available upon request.
Earthing clampaluminium
material: aluminium; steel, hot dip galvanized
L.-Nr. cond.Ø mm screw kA 1s kg
4680.58/1 8,1 - 11,7 M10 X 60 16 0,104680.60/1 11,8 - 15,8 M10 X 70 20 0,144680.59 15,9 - 19,2 M12 X 70 28 0,204680.61 19,3 - 24,6 M12 X 80 40 0,30
Earthing clamps made of copper are available upon request.
Other types are available upon request.
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Earthing clampsteel
material: steel, hot dip galvanized
L.-Nr. cond.Ø mm screw kA 1s kg
4680.32 6,0 - 13,0 M10 X 60 8 0,294680.30/1 8,0 - 12,0 M12 X 50 8 0,354680.33/3 11,7 - 15,7 M12 X 70 12 0,38
Other dimensions are available upon request.
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Aircraft Warning Marker AuroraNumbering system
Choose required number of each possible option according to tables
below (digit 1 - 11).
Correct No. is for example as follows: 9221.11S107
Digit 1 - 5 No. Size of warning marker
9221. 600 mm
Digit 6 No. Colour of main body
1 RAL 9016, traffic white
2 RAL 3020, traffic red
Digit 7 No. Applied (reflective) foil
0 no foil applied
1 4081 fluorescent yellow
Digit 8 No. Clamp size for conductorØ
S 12,0 - 26,9 mm
M 27,0 - 36,9 mm
L 37,0- 46,9 mm
X 47,0 - 56,9 mm
Digit 9 No. Kind of clamping
1 single clamp (only outside)
2 double clamp (in- and outside)
Digit 10 - 11 No. Rubber for conductorØ
00 no rubbers included
06 12,0 -12,9 mm
Cla
mp
siz
e „
S“
07 13,0 - 13,9 mm
08 14,0 - 14,9 mm
09 15,0 - 15,9 mm
10 16,0 - 16,9 mm
11 17,0 - 17,9 mm
12 18,0 - 18,9 mm
13 19,0 - 19,9 mm
14 20,0 - 20,9 mm
15 21,0 - 21,9 mm
16 22,0 - 22,9 mm
17 23,0 - 23,9 mm
18 24,0 - 24,9 mm
19 25,0 - 25,9 mm
20 26,0 - 26,9 mm
Elastomere inserts for sizes M, L, X on demand.
Warning Markers can only be used with inserts.
Reflecting
Aircraft
Warning Marker
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SPACERS AND SPACER DAMPERS
09
Contents
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General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Spacer damper aluminium, for horizontal twin bundles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Spacer damper aluminium, for vertical twin bundles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Spacer damper aluminium, for triple bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Spacer damper aluminium, for quadruple bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Spacer Aluminium, casted, for twin bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Spacer aluminium, forged, for twin bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Spacer aluminium, forged, for triple bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Spacer aluminium, forged, for quadruple bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Flexible spacer with neoprene insert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Rigid spacer for jumper loop, for twin bundles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Rigid spacer for jumper loop, for triple bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Rigid spacer for jumper loop, for quadruple bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
RemarkMosdorfer offers a full range of Spacers and Spacer Dampers for
bundled lines, including products from vibration control specialist’s
DAMP s.r.l. (www.damp.it) a wholly owned Mosdorfer GmbH com-
pany (www.mosdorfer.com) and fully integrated into the Knill En-
ergy group based in Austria (www.knillgruppe.com). By combining
years of expertise, long term service and relaibility, we offer a full
range of spacers and spacer dampers for all types of bundle configu-
ration and conductor applications. DAMP s.r.l. damping products are
globally recognised and leaders in Overhead Line Vibration control.
Our full range of spacers and spacer dampers, including rigid and
semi flexible types complete our catalogue range.
Overhead line spacers add reliability and protection to the conduc-
tor bundle, by separating conductors preventing clashing under
operating conditions.
To provide this protection, it is necessary to install the correct
number of spacers precisely positioned within each span. The spa-
cing system protects the conductors from high wind and ice loadings
by preventing sub-conductor clashing within the span. Spacers have
controlled flexibility to also with-
stand high short circuit currents
loads in compression and tension,
to protect both conductors and
spacers from damage.
For both single and bundled con-
ductor systems, wind induced
vibration can occur. On bundled
systems, flexible spacers are recom-
mended. Where high level system
protection is required, spacers with
energy absorption capabilities (dam-
ping elements) are recommended =
SPACER DAMPERS.
On tensioned overhead conductors, wind
flow leads to high-frequency vibrations, with
amplitudes in the magnitude of one con-
ductor diameter. This is caused by vortex
shedding, which excites the conductor into
Aeolian vibrations at right angles to the wind
direction. Aeolian vibration occurs at wind
velocities of approximately 1-7m/s causing
vibration frequencies of 5-100 Hz dependent
on conductor diameter and tension.
General
High-voltage line
with
spacer dampers
Short circuit test
made on
spacer dampers
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These vibrations will lead to internal conduc-
tor fatigue stress at suspension and tension
fittings, applying compression and bending
loads at conductor support points.
As vibration increases, higher tensile loads are
applied.
Line routes along flat terrain or spanning valleys require higher le-
vels of protection, particularly where prevailing wind directions are
perpendicular to the line route.
Fatigue stresses will damage the conductor, causing strand breakage
and cable failure. Insulator string ball fittings and turnbuckles are
particularly at risk due to their specific shapes.
For conductor bundle tension and support fitting protection, spacer
dampers offer a level of protection that reduce stresses within the
system to safe operating levels, protecting long term fatigue failures
during the operational life of the network.
As well as higher frequency vibrations, lower frequency sub-conduc-
tor vibrations are also present.
These occur at wind velocities of approx. 4-18
m/s and move conductors towards one ano-
ther at frequencies ≤ 5Hz.
The spacing system also provides protection
against sub-conductor clashing at these lower
frequency-higher amplitude vibrations.
Wind induced
vibrations vertical
to the wind flow
Safe border line for
an al-alloy cable
Subconductor
vibration
Arrangement of the
damping elements
Spacer dampers consist of conductor clamps, a connecting frame
with damping elements.
These elements are manufactured from highly elastic macro- mole-
cular elastomers with high energy absorption properties that damp
harmful vibrations.
These elements also provide the necessary flexibility and stiffness in
all directions of installed conductor movement and motion.
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Computational programs
MOSDORFER and DAMP have developed com-
putational programs for all bundle configu-
rations for high-frequency aeolian vibrations
(Karman vibrations) including subconductor
vibrations.
For high-frequency vibrations, maximum ben-
ding stresses at the clamp outlet and fastening
points of spacers will be calculated depending
on the frequency.
The use of Stockbridge dampers can also be
considered and integrated into calculations.
These computations are based on the princi-
ple of energy balance.
According to this principle, energy fed by
wind will be withdrawn from the system by
the self-damping power of the conductors and
damping of the spacer dampers.
The principle of energy balance also forms the
basis for calculating the bundle conductor vi-
brations caused by coupling of the conductor
that is in the wake.
Coupling will lead to instabilities of the so-
called “flutter type”. The dynamic bending
stresses, forces and rotation of the spacer
clamps will be calculated.
The system also calculates bundle separation
of spacers, which avoids higher stress caused
by possible resonance within the span.
Field measurements on existing overhead lines
Existing vibration measurements from existing
lines contain valuable data for making vibra-
tion studies.
MOSDORFER - DAMP are active making field
measurements, which assist with system life
expectancy calculations.
By using these measurements, (each taking
approximately 3 months), combined with
conductor self damping tests in Mosdorfer
own laboratory, our recommendations can
be optimised to offer economic solutions for
system protection.
Simulation of a
vibration
Mechanism of
bundle conductor
vibrations
Installation
distances of spacers
Vibration
recorder
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Spacers are made of very different materials, high-grade cast alumi-nium are preferred for frames and clamps.
Some spacer bodies are also partly forged. For clamps, high-strength screws with or without shear head huts are mostly be used.
Damping element elastomers have high fatigue life, resistant to UV and ozone attack with high energy absorption properties.
High temperature resistant elastomer clamp liners can be specified for conductor temperatures ≤ 235°C.
All products are manufactured in accordance to IEC 61854 - Over-head lines - Requirements and tests for spacers - and special custo-mer requirements. This includes high corona resistant clamps for ultra- high system voltages.
We offer many product variants adapted for specific customer requi-rements. Our standard range only is included within the catalogue. Examples of other types are described in detail below:
Rigid spacers for jumpers for vertical and horizontal twin bundles
Where conductor connections are short, it is not always necessary to use more expensive flexible spacers.
This type is also available for triple and quadruple bundles shown in the Tables. Other designs are also available.
Rigid spacers for jumper loops are often equipped with counter-weights to create tower clearance.
These variants can be used for all bundle configurations.
Flexible spacers for horizontal and vertical twin bundles with bodies made of aluminium (System LORÜNSER)
These spacers are made of moving clamp bo-dies connected by means of a spacing piece.
The clamp bodies are guided over steel bolts and are free to move in one direction.
To provide the optimum bolt connection, the bore in the link is equipped with a stainless sleeve for high durability.
Rigid spacers for jumpers withcounterweights
Flexible spacer
Material
Spacers
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Flexible spacers with neoprene washers for
horizontal and vertical twin bundles
These spacers are made of moving clamp bo-
dies connected by means of a spacing piece.
The clamp bodies are guided over steel bolts
and are free to move in all directions.
Neoprene washers fixed between the body and clamps have some
damping effect preventing noise.
To protect the conductors, neoprene washers are shaped to reduce
connecting stresses during bundle movement.
For big conductors and assemblies using heliformed rods, a double
bolt clamp type is available.
Spacers with neoprene inserts
These spacers are made up of two frames with
electrically semi-conducting neoprene inserts,
linked by a hinge and fixed to the frames.
They have no moving parts avoiding damage
by vibration.
Movements between conductors are absor-
bed by the neoprene inserts.
Alternatively, spacers can be equipped with equipotential bonding.
The types with forged aluminium bodies are available for twin, triple
and quadruple bundles.
The cast version is available for twin bundles.
Model with a hinge type clamp and tensioning bolt
Due to its shape, this spacer has a corona extinction voltage that is
particularly high.
Tensioning bolts fixed by means of a special tool assist with easy and
quick assembly.
For high-temperature conductor application, a heat resistant silicone
blend used.
Flexible spacer
with Neoprene
washers
Spacer with neo-
prene inserts for a
twin bundle
Flexible spacer for
big conductors
Forged spacer for a
quadruple bundle
Spacer with a
hinge type clamp
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Spacer dampers
The spacer dampers described in the tables
are a selection of types most commonly used,
where the system of fastening to the conduc-
tor can be varied e.g. clamps fixed by using
heliformed rods with neoprene clamp liners
to offer added conductor protection.
As previously described, non-damping
spacers, and spacer dampers include models
with hinge type clamps and tensioning bolts.
Both types have excellent corona behaviour.
For Wildlife protection, Bird Flight Diverters can also be fitted.
Spacer damper,
fixing with
heliformed rods
Rotary spacer with
damping links
Spacer dampers
with areas
warning birds
Spacer damper
with a hinge type
clamp and a
tensioning bolt
Rotary spacer with damping links for sus-
pension strings with horizontal twin bundle
conductors and for four bundle conductors
The idea behind this is that each of the con-
ductors arranged horizontally is separately
fixed to an insulator. The live connection of
the insulator is provided by the rotary spacers
arranged at a distance of approx. 1 m. If one
string breaks, the loads will be transmitted
from the intact string extremely gently.
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Spacer damper aluminium, for horizontal twin bundles
material: aluminium, casted; steel, hot dip galvanized; Neoprene
dimensions in mmL.-Nr.
cond.Ø Akg
4980.030/40 19,0 - 21,5 400 2,324980.030/45 21,6 - 23,9 400 2,404980.030/50 24,0 - 25,9 400 2,104980.030/55 26,0 - 29,0 400 2,104980.045/55 26,0 - 29,0 450 2,404980.030/60 29,1 - 30,7 400 2,104980.030/65 30,8 - 33,0 400 2,104980.040/65 30,8 - 33,0 450 2,404980.030/72/K 33,1 - 35,5 400 2,304980.030/75 35,6 - 38,5 400 2,374980.040/75 35,6 - 38,5 450 2,40
Models with clamps of the hinge type or clamps with neoprene inserts and �xing with heliformed
rods are available upon request.
All types can be delivered with shear head hats and a �exible potential equalisation.
Other dimensions are available upon request.
Spacer damper aluminium, for vertical twin bundles
material: aluminium, casted; steel, hot dip galvanized; Neoprene
dimensions in mmL.-Nr.
cond.Ø Akg
4981.30/45 21,6 - 23,9 400 3,504981.30/65 30,8 - 33,0 400 3,604981.30/75 35,6 - 38,5 400 3,60
Models with clamps of the hinge type or clamps with neoprene inserts and �xing with heliformed
rods are available upon request.
All types can be delivered with shear head hats and a �exible potential equalisation.
Other dimensions are available upon request.
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Spacer damper aluminium, for triple bundles
material: aluminium, casted; steel, hot dip galvanized; Neoprene
dimensions in mmL.-Nr.
cond.Ø Akg
4982.030/50 24,0 - 25,9 400 4,304982.050/50 24,0 - 25,9 500 4,604982.030/55 26,0 - 29,0 400 4,304982.050/55 26,0 - 29,0 500 4,604982.030/60 29,1 - 30,7 400 4,304982.030/65 30,8 - 33,0 400 4,304982.030/75 35,6 - 38,5 400 4,30
Models with clamps of the hinge type or clamps with neoprene inserts and �xing with heliformed
rods are available upon request.
All types can be delivered with shear head hats and a �exible potential equalisation.
Other dimensions are available upon request.
Spacer damper aluminium, for quadruple bundles
material: aluminium, casted; steel, hot dip galvanized; Neoprene
dimensions in mmL.-Nr.
cond.Ø Akg
4983.030/45 21,6 - 23,9 400 5,204983.030/50 24,0 - 25,9 400 5,204983.030/55 26,0 - 29,0 400 5,204983.030/60 29,1 - 30,7 400 5,204983.030/65 30,8 - 33,0 400 5,00
Models with clamps of the hinge type or clamps with neoprene inserts and �xing with heliformed
rods are available upon request.
All types can be delivered with shear head hats and a �exible potential equalisation.
Spacers for diamond quadruple bundles are available upon request.
Other dimensions are available upon request.
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Spacer Aluminium, casted, for twin bundles
material: aluminium, casted; steel, hot dip galvanized; Neoprene
dimensions in mmL.-Nr.
cond.Ø Akg
4974.40/00 18,1 - 20,0 400 1,104974.40/02 20,1 - 22,0 400 1,004974.40/03 22,1 - 24,0 400 1,104974.40/04 24,1 - 26,0 400 1,004974.45/04 24,1 - 26,0 450 1,104974.40/05 26,1 - 28,0 400 1,104974.40/06 28,1 - 30,0 400 1,104974.45/06 28,1 - 30,0 450 1,504974.40/07 30,1 - 32,0 400 1,104974.45/07 30,1 - 32,0 450 1,504974.52/08 32,1 - 34,0 520 1,304974.40/09 34,1 - 36,0 400 1,10
All parts are captive. The small connecting loop of the neoprene parts tightly mounted in the
clamp body ensures ease of assembly without the �eld spacer having to be dismounted. Suf�cient
movement within the conductor is guaranteed by elastic neoprene. These �eld spacers with a
semi-conducting neoprene insert can also be delivered with a contact spring to enable potential
equalisation.
Other dimensions are available upon request.
Spacer aluminium, forged, for twin bundles
material: aluminium, forged; steel, hot dip galvanized; Neoprene
dimensions in mmL.-Nr.
cond.Ø Akg
4976.12 18,1 - 20,0 400 1,004976.02/P 20,1 - 22,0 400 0,984976.03 22,1 - 24,0 400 0,904976.04 24,1 - 26,0 400 0,954976.05 26,1 - 28,0 400 0,904976.06 28,1 - 30,0 400 1,104976.07/1 30,1 - 32,0 400 1,124976.08 32,1 - 34,0 400 1,10
All parts are captive. The small connecting loop of the neoprene parts tightly mounted in the
clamp body ensures ease of assembly without the �eld spacer having to be dismounted. Suf�cient
movement within the conductor is guaranteed by elastic neoprene. These �eld spacers with a
semi-conducting neoprene insert can also be delivered with a contact spring to enable potential
equalisation.
The screw con�guration will, in combination with the de�ned supporting points, result in a
pre-tensioning force of the clamping body to the conductors.
Other dimensions are available upon request.
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Spacer aluminium, forged, for triple bundles
material: aluminium, forged; steel, hot dip galvanized; Neoprene
dimensions in mmL.-Nr.
cond.Ø Akg
4977.0003 26,1 - 28,0 400 1,704977.0002 28,1 - 30,0 400 1,904977.45/06 30,1 - 32,0 450 2,004977.11 32,1 - 34,0 450 2,074977.40/09 34,1 - 36,0 400 1,90
All parts are captive. The small connecting loop of the neoprene parts tightly mounted in the
clamp body ensures ease of assembly without the �eld spacer having to be dismounted. Suf�cient
movement within the conductor is guaranteed by elastic neoprene. These �eld spacers with a
semi-conducting neoprene insert can also be delivered with a contact spring to enable potential
equalisation.
The screw con�guration will, in combination with the de�ned supporting points, result in a
pre-tensioning force of the clamping body to the conductors.
Other dimensions are available upon request.
Spacer aluminium, forged, for quadruple bundles
material: aluminium, forged; steel, hot dip galvanized; Neoprene
dimensions in mmL.-Nr.
cond.Ø Akg
4975.40/12 22,1 - 24,0 400 2,10
All parts are captive. The small connecting loop of the neoprene parts tightly mounted in the
clamp body ensures ease of assembly without the �eld spacer having to be dismounted. Suf�cient
movement within the conductor is guaranteed by elastic neoprene. These �eld spacers with a
semi-conducting neoprene insert can also be delivered with a contact spring to enable potential
equalisation.
The screw con�guration will, in combination with the de�ned supporting points, result in a
pre-tensioning force of the clamping body to the conductors.
Other dimensions are available upon request.
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Flexible spacer with neoprene insert
material: aluminium, casted; steel, hot dip galvanized; Neoprene
dimensions in mmL.-Nr.
cond.Ø Akg
4968.0015 23,0 - 24,5 450 3,454968.0024 24,5 - 26,0 400 2,404968.0019 29,0 - 30,5 400 2,404968.0025 30,5 - 32,0 400 2,404968.0009 32,0 - 33,5 400 2,404968.0001 33,5 - 35,0 400 2,404968.0004 33,5 - 35,0 450 2,844968.0018 35,0 - 36,5 400 2,404968.0003 38,0 - 39,5 400 2,404968.30 38,0 - 39,5 450 3,20
For horizontal and vertical twin bundles.
The neoprene washers �xed between the body and clamps have some damping effect.
Other dimensions are available upon request.
Rigid spacer for jumper loop, for twin bundles
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A Widthkg
4972.0101 18,10 - 20,00 200 30 0,504972.40/50 18,10 - 20,00 400 50 1,404972.20/52 20,10 - 22,00 200 50 0,804972.40/52 20,10 - 22,00 400 50 1,404972.20/03 22,10 - 24,00 200 30 0,504972.20/53 22,10 - 24,00 200 50 0,804971.40/53 22,10 - 24,00 400 50 1,404971.0016 22,10 - 24,00 450 50 1,204972.20/04 24,10 - 26,00 200 30 0,504972.40/04 24,10 - 26,00 400 50 1,404972.0028 24,10 - 26,00 450 50 1,404972.20/05 26,10 - 28,00 200 30 0,404972.40/05 26,10 - 28,00 400 50 1,404972.0073 26,10 - 28,00 450 50 1,504972.20/06 28,10 - 30,00 200 30 0,394972.0010 28,10 - 30,00 400 50 1,274972.0008 28,10 - 30,00 450 50 1,404972.20/07 30,10 - 32,00 200 30 0,404972.40/07 30,10 - 32,00 400 50 1,404972.0005 30,10 - 32,00 450 50 1,904972.20/68 32,10 - 34,00 200 60 0,904972.0049 32,10 - 34,00 400 50 1,304972.45/68 32,10 - 34,00 450 60 1,904972.20/69 34,10 - 36,00 200 60 1,204972.20/510 36,10 - 38,00 200 50 0,80
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material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A Widthkg
4972.0032 36,10 - 38,00 400 50 1,504972.20/611 38,10 - 40,00 200 60 0,934972.45/611 38,10 - 40,00 450 60 1,704972.0018 40,10 - 42,00 200 60 0,904972.0022 42,10 - 44,00 200 50 0,80
These �eld spacers are exclusively suitable for loops and can also be equippedwith counterweights.
Other types are available upon request.
Rigid spacer for jumper loop, for triple bundles
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø Akg
4973.40/04 24,10 - 26,00 400 2,104973.0004 28,10 - 30,00 450 2,104973.0003 28,10 - 30,00 450 2,304973.0021 30,10 - 32,00 400 2,304973.0005 32,10 - 34,00 450 2,304973.0016 34,10 - 36,00 450 2,304973.0017 38,10 - 40,00 450 2,40
These �eld spacers are exclusively suitable for loops and can also be equippedwith counterweights.
Other types are available upon request.
Rigid spacer for jumper loop, for quadruple bundles
material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø Akg
4971.20/03 22,10 - 24,00 200 1,624971.40/03/1 22,10 - 24,00 400 2,684971.0009 24,10 - 26,00 400 2,704971.45/54 24,10 - 26,00 450 3,704971.0024 26,10 - 28,00 450 3,204971.0002 28,10 - 30,00 200 1,804971.0100 28,10 - 30,00 400 2,904971.0020 28,10 - 30,00 450 3,204971.40/57 30,10 - 32,00 400 2,904971.0032 30,10 - 32,00 450 3,304971.20/58 32,10 - 34,00 200 1,804971.40/58 32,10 - 34,00 400 2,80
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material: aluminium, extruded; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø Akg
4971.0022 34,10 - 36,00 450 3,204971.0017 36,10 - 38,00 400 3,004971.0023 38,10 - 40,00 450 3,30
These �eld spacers are exclusively suitable for loops and can also be equippedwith counterweights.
Other types are available upon request.
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VIBRATION DAMPERS
10
Contents
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General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Stockbridge damper with casted clamp, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Stockbridge damper with forged clamp, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Stockbridge damper with bell weights, with forged clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Bretelle clamp for damping wire, closed type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Bretelle clamp for damping wire, open type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
On tensioned overhead conductors, wind flow leads to high-frequency
vibrations, with amplitudes in the magnitude of one conductor
diameter.
This is caused by vortex shedding, which excites
the conductor into Aeolian vibrations at right
angles to the wind direction.
Aeolian vibration occurs at wind velocities
of approximately 1-7m/s causing vibration
frequencies of 5-100 Hz, dependent on
conductor diameter and tension.
These vibrations will lead to internal conductor fatigue stress at sus-
pension and tension fittings, applying compression and bending
loads at conductor support points.
As higher tensile loads are applied vibration increases.
Line routes along flat terrain or spanning valleys require higher
levels of protection, particularly where prevailing wind directions
are perpendicular to the line route.
Fatigue stresses will damage the conductor, causing strand breakage
and cable failure.
Insulator string ball fittings and turnbuckles are particularly at risk
due to their specific shapes.
For the conductor, including tension and support fitting protection,
suitable vibration dampers offer a level of protection that reduce
stresses within the system to safe operating levels, protecting from
long term fatigue failures during the operational life of the network.
Stockbridge dampers
Since construction of the first overhead lines,
there have been problems with vibrations.
Very soon, the Stockbridge Vibration Damper
(named after its inventor) proved to be a most
effective type of damper. These dampers are a
combined energy absorbing resonance type,
that damp all frequencies that occur as part of an
energy balanced system. MOSDORFER dampers
work particularly well, where the wind energy
will be partly absorbed by the conductor, and the remaining majority
absorbed by the damper.
General
Wind induced
vibrations vertical
to the wind flow
Vortex shedding
at a laminar
wind inflow
Safe border line for
an al-alloy cable
Stockbridge
damper
with 4 resonances
with open weights
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Energy
consumption
of a 4R damper
Vibration study:
bending stresses
with and without
dampers
Field measurement
with recorder at a
HSU clamp
This method of system damping is only effective if the conductor and
damper are harmonized.
This requires that damper weights and messenger cable lengths are
compatible with the conductor.
This design harmonization makes it possible to offer dampers with 2 or
4 resonance frequencies, which do not overload the conductor at the
clamp interface, or over stress the messenger cable.
Vibration studies
For an energy balanced system, it is there-
fore necessary to ensure that the dampers are
“tuned” and compatible with the conductor
system.
A vibration study considers line route terrain,
climatic conditions, conductor data (Conductor
Data Sheet) line tension, configuration, span
lengths, system voltage, and self-damping
characteristics of the conductor if known. Data
from existing lines, suspension and tension arrangements are also
required when available.
This data enables MOSDORFER to make vibration studies, choose
the most suitable damper type, and recommend both quantities and
positioning within the span to protect the system.
Field measurements on existing overhead lines
Existing vibration measurements from existing lines valuable data for
making vibration studies.
MOSDORFER-DAMP are active making field measurements, which
assist with system life expectancy calculations.
By using these measurements, (each taking approximately 3 months)
combined with conductor self damping tests in MOSDORFER‘s own
laboratory, our recommendations can be optimised to offer econo-
mic solutions for system protection.
Types of dampers
Standard Stockbridge damper types have open weights cast onto
the messenger cable. Conductor clamps are manufactured in alu-
minium, either forged or cast. Messenger wires are manufactured
from high tensile hot dip galvanized steel or stainless steel wires,
constructed to incorporate good energy dissipation and damping
properties. Screws and nuts for cast clamps are hot dip galvanized.
Forged clamps use stainless steel screws.
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Clamps
For copper conductor compatibility and
applications, forged copper alloy clamps or
bimetallic (copper-aluminium) conductor
clamp grove sleeves are available.
For larger non-standard conductors, special
clamps are also available.
Messenger damper wire
For highly corrosive atmospheres and regions,
stainless steel material may be necessary.
For additional corrosive protection of all
messenger cable types, sealed elastomer
sleeves are also available.
Dampers for fibre optic cables
These dampers are generally lighter weight types with bigger clamps
as they are mounted on heliformed rods. These are described in
detail in Part 18 of the catalogue, including Spiral dampers.
Break away huts
For correct tightening of the screws break away huts can also be
supplied.
Testing and inspection of the dampers
Vibration dampers, both dynamic performance and physical
properties are developed, tested and checked in accordance with
EN 61897 - Overhead lines - Requirements and tests for Stockbridge
type Aeolian vibration dampers. High Voltage Corona and partial
discharge testing is made in accordance with EN 61284 - Over-
head lines - Requirements and tests for fittings. Ferrous component
galvanization and tests are made in accordance with ISO EN 1461
Hot dip galvanized coating on fabricated iron and steel articles -
Specifications and test methods. Stainless steel components conform
to - ISO EN 3506 - Mechanical properties of corrosion-resistant
stainless steel fasteners.
Damper with
special clamps
Damper with
a protected
damper wire
Stockbridge
dampers with
bell weights
Different design features are possible, with
the following variations available:
Damper weights
Bell-shaped damper weights are available for
all types. These have superior high voltage
corona properties; particularly suitable for
vertical twin bundles.
The damper weights can also be fixed to
the conductor by means of pressed tapered
cones.
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Armour rods
Helical wire fittings are made of formed round wire rods, with the
ends shaped depending on the material and diameter. The formed
diameters of the wires are smaller than the diameter of cable to be
applied. This creates uniform radial pre compression of the spiral
without permanent distortion of the wires or sub-sets. This applies
the initial low stress grip of the cable, which increases as a resultant
of higher tension forces that convert to high frictional grip. Uniform
radial loads and grip increase over a longer application and contact
length that provide low relative and uniform radial stress. The rein-
forcement of the cross section causes lower conductor stresses.
Identification and labelling of products are in accordance with
IEC 61284 (Rules of behaviour with respect to possible hazards when
dealing with electric equipment and equipment employing similar
techniques) will either be printed on individual rod sets or stated on
a label connected to the set.
The lay direction of the helical rods is normally same as that of the
outermost layer of the conductor, typically right hand lay.
The material used is the same as that of the conductor.
Example for
round wire rods
Example for Bretelle clamps
Bretelle clamps
These clamps are specially intended for the installation of conduc-
tor loops. These loops primarily have a damping function but they
will also help to prevent con-
ductor rupture. The clamping
grooves are designed to achieve
a high slipping load. The con-
ductor channel of the Bretelle
conductor is grooved whereas
the channel for the conductor
is serrated in order to make it
possible to protect the conduc-
tor without affecting the clamp
function.
Two types are available:
Open tpye: with a continuous channel for the conductor (multiple
loops).
Closed type: the closed end guarantees optimal corona protection.
An internal recess serves to take up the binding clamp.
The installation distance will be calculated upon request.
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Stockbridge damper with casted clamp
for aluminium based conductors
material: aluminium, casted; steel, hot dip galvanized; cast iron,hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø screwsversion kg
9301.01/G/1 7,0 - 14,0 M10 1 1,709301.0010 7,0 - 14,0 M10 2 1,509303.01/G/1 7,0 - 14,0 M10 2 2,109301.03/G/1 14,0 - 16,5 M10 1 1,819303.03/G/1 14,0 - 16,5 M10 2 2,209303.04/G/1 14,0 - 19,0 M12 2 2,239301.04/G/1 16,6 - 19,0 M10 1 1,809301.020/G/1 19,0 - 29,0 M14 1 2,109304.021/G/1 19,0 - 29,0 M14 1 4,209306.03/G/1 19,0 - 29,0 M14 1 6,009303.006/G/1 19,0 - 29,0 M14 2 2,559305.06/G/1 19,0 - 29,0 M14 2 5,309304.10/G/1 28,5 - 41,0 M14 1 4,269306.07/G/1 28,5 - 41,0 M14 1 6,109303.10/G/1 28,5 - 41,0 M14 2 2,609305.07/G/1 28,5 - 41,0 M14 2 5,17
Version 1 covers two resonant frequencies and version 2 covers four resonant frequencies.
The weights are casted onto the messenger wire. Models with compression sleeve are available
upon request.
Models with stainless steel messenger wire are available upon request.
Other types are available upon request.
Stockbridge damper with forged clamp
for aluminium based conductors
material: aluminium, forged; steel, hot dip galvanized; cast iron,hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø screwsversion kg
9301.020/EA1 11,0 - 14,5 M10 1 1,509303.020/EA1 11,0 - 14,5 M10 2 2,109301.030/EA1 14,5 - 17,0 M10 1 1,599303.030/EA1 14,5 - 17,0 M10 2 2,059301.040/EA1 17,0 - 19,5 M10 1 1,579301.050/EA1 19,5 - 22,0 M12 1 1,659304.050/EA1 19,5 - 22,0 M12 1 3,959303.050/EA1 19,5 - 22,0 M12 2 2,059301.060/EA1 22,0 - 24,5 M12 1 1,799304.060/EA1 22,0 - 24,5 M12 1 3,809303.060/EA1 22,0 - 24,5 M12 2 2,079301.070/EA1 24,5 - 28,0 M12 1 1,919304.070/EA1 24,5 - 28,0 M12 1 4,009303.070/EA1 24,5 - 28,0 M12 2 2,339304.080/EA1 28,0 - 31,0 M12 1 4,00
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material: aluminium, forged; steel, hot dip galvanized; cast iron,hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø screwsversion kg
9303.080/EA1 28,0 - 31,0 M12 2 2,209304.090/EA1 31,0 - 33,0 M12 1 4,009306.090/EA1 31,0 - 33,0 M12 1 5,909303.090/EA1 31,0 - 33,0 M12 2 2,409304.100/EA1 33,0 - 35,0 M12 1 4,109303.100/EA1 33,0 - 35,0 M12 2 2,609304.110/EA1 35,0 - 38,0 M12 1 4,329306.110/EA1 35,0 - 38,0 M12 1 6,209308.110/EA1 35,0 - 38,0 M12 1 8,109304.120/EA1 38,0 - 42,0 M12 1 4,109306.120/EA1 38,0 - 42,0 M12 1 6,329304.130/EA1 42,0 - 46,0 M12 1 4,109306.130/EA1 42,0 - 46,0 M12 1 6,00
Version 1 covers two resonant frequencies and version 2 covers four resonant frequencies.
The weights are casted onto the messenger wire. Models with compression sleeve are available
upon request.
Models with stainless steel messenger wire are available upon request.
Other types are available upon request.
Stockbridge damper with bell weights, with forged clamp
material: aluminium, forged; steel, hot dip galvanized; cast iron,hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø screwskg
9303.9010 9,0 - 11,0 M10 2,999301.9020 11,0 - 14,5 M10 1,409303.9020 11,0 - 14,5 M10 2,999301.9030 14,5 - 17,0 M10 1,809303.9030 14,5 - 17,0 M10 3,069303.9050 19,5 - 22,0 M12 3,009304.9050 19,5 - 22,0 M12 4,919303.9060 22,0 - 24,5 M12 3,009304.9060 22,0 - 24,5 M12 4,899303.9070 24,5 - 28,0 M12 3,329304.9070 24,5 - 28,0 M12 5,309306.9070 24,5 - 28,0 M12 5,579303.9080 28,0 - 31,0 M12 3,289304.9080 28,0 - 31,0 M12 5,109306.9080 28,0 - 31,0 M12 5,769303.9090 31,0 - 33,0 M12 3,279306.9090 31,0 - 33,0 M12 5,699308.9090 31,0 - 33,0 M12 9,009304.9100 33,0 - 35,0 M12 5,119304.9110 35,0 - 38,0 M12 5,319306.9110 35,0 - 38,0 M12 6,019308.9110 35,0 - 38,0 M12 9,00
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material: aluminium, forged; steel, hot dip galvanized; cast iron,hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø screwskg
9308.9130 42,0 - 46,0 M12 9,204998.160 56,9 M14 0,00
The weights are casted onto the messenger wire. Models with compression sleeve are available
upon request.
Models with stainless steel messenger wire are available upon request.
Other types are available upon request.
Bretelle clamp for damping wire
closed type
material: aluminium, forged; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A screwskg
9350.0002 17,5 - 20,5 100 2 0,609350.03/1 20,5 - 23,5 100 2 0,909350.04 23,5 - 26,5 100 2 0,809350.0018 26,5 - 27,7 135 3 1,409350.0007 29,5 - 32,5 100 2 0,909350.0014 34,0 - 36,6 150 3 2,209350.0010 38,3 - 41,1 150 3 2,109350.0016/DC 38,3 160 3 2,50
Bretelle clamps with stainless bolts on request.
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Bretelle clamp for damping wire
open type
material: aluminium, forged; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A screwskg
9350.0011 17,5 - 21,0 125 3 1,009350.0021 23,52 125 3 1,009350.0012 26,5 - 27,7 135 3 1,409350.0015 34,0 - 36,6 150 3 2,309350.0013 38,3 - 41,1 150 3 2,109350.0017/DC 38,3 160 3 2,50
Bretelle clamps with stainless bolts on request.
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MATERIAL FOR FIBRE OPTIC LINES
18
Contents
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General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
C-bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
HSU trunnion type, forged, for aluminium based OPGW conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
HSU with reinforcing rods, trunnion type, forged, for aluminium based OPGW conductors . . . . . . . . . . . . . . . 165
HSU with aluminium belt, casted, for aluminium based OPGW conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Earthwire bracket with parallel groove clamp, double, for aluminium based conductors . . . . . . . . . . . . . . . . . . 168
Earthwire bracket with parallel groove clamp, triple, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . 168
Earthwire bracket with parallel groove clamp, quad, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . 169
Shunt copper, insulated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Shunt copper, with connection screw for clamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Shunt aluminium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Heliformed dead end with thimble and reinforcing rods, for aluminium based conductors . . . . . . . . . . . . . . . . 171
Stockbridge damper with casted clamp, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Stockbridge damper with forged clamp, for aluminium based conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Down lead clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Heliformed spiral vibration damper, for all materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Earthwires provide earth protection for overhead power lines,
protecting from lightning strikes. The grounded system releases high
energy safely, providing minimum
disruption to the power delivery
system.
Earth wires should be mounted at
the highest positions of support
structures, providing the highest
levels of protection.
OPGW (optical groundwires)
provide, in addition to system
protection, high capacity data
transfer through internal optical
fibres.
The glass f ibres, which are
protected inside concentric or
eccentric plastic, aluminium or stainless steel tubes, are sensitive
to bending and compression loads. The most reliable method of
mechanical connection to the OPGW uses hand applied helical rod
type fittings.
Two other types of optical fibre data transfer cables use these types
of connecting fittings. OPPC’s (optical phase conductors) and ADSS
(all-dielectric self- supporting) fibre optic cables. OPPC conductors
are constructed similar to OPGW, however, optical fibre tubes
require disconnection from power voltages at splicing joint boxes.
ADSS cables are mostly installed and operated at a similar physical
elevation to the phase wire, and generally installed on systems
voltages ≤ 110kV.The following examples show some typical applications. However,
fittings also are available to all the other options.
Suspension of a fibre optic cable by means of a C-bracket on a
suspension tower
Aufhängung eines LWL Seiles mittels C-Bock an einem Tragmast
General
400kVcorner mast with
OPGW earthwire
View of asuspension point
for an OPGW
with a C-bracket
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Tensioning a fibre optic cable with down lead clamps
Suspension of an ADSS cable by means of a roller suspension clamp
Tensioning of an ADSS cable
View of a
tensioning point
for an OPGW with
down lead clamps
Suspension of an
ADSS cable by
means of a roller
suspension clamp
Tensioning of an
ADSS cable with a
helical dead end
1 Bracket2 Elongation strap3 Twisted double eye4 Dead end set5 Stockbridge damper6 PG clamp7 Down lead clamp8 Aluminium shunt
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High load withstand long span suspensions and tensioning systems for ground wires e.g.
fjord or river crossings:
Vibration protection
Optical fibre cables are sensitive to pressure and vibrations, requiring special design consideration
in all applications.
To protect the cables from radial clamping forces, any compressive loads applied directly to the
cable must be controlled.
Application of a protective layer of hand applied helically formed rods protects the cable and
internal fibres, reducing the effect of compressive loads applied by clamps and tension fittings.
Vibration damper clamps must be applied over helical rod sets at the correct installation torque.
For vibration control, Stockbridge dampers are normally used.
When considering the damping protection, MOSDORFER’s computational programs also consider
the influence of the helical fittings. At tension points, provision for two vibration dampers to be
applied safely are normally required.
A more detailed description of this damper type can be found in Part 10 of our catalogue.
Stockbridge dampers will also be used where
warning spheres are mounted on longer pro-
tective rod sets. If a second damper is neces-
sary it will also be applied to the rods with ap-
plied lengths and damper positions determine
by vibration studies.
Example for
a calculation:
Tensioning point
with two dampers
Suspension
of an
OPGW conductor
with a double
HSU unit (left) and
tensioning
of a big
OPGW conductor
with a double
heliformed
dead end (right)
Example for a
calculation:
Warning sphere
with a Stockbridge
damper
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Warning sphere
Warning spheres
Warning Spheres are installed on groundwires to warn low flying
aircraft of the elevated obstacles.
These are generally positioned on routes near airports and elevated
spans on the uppermost earthwire cable.
The warning device consists of two hemispheres attached to the
groundwire by two bolted clamps.
The Spheres are 600 mm diameter; all other details available on
request.
The Warning spheres can be delivered in three different Types of UV
and Ozone resistant colours – red, orange and white or alternating
- white/orange or white/red.
Spiral dampers
For smaller diameter and ADSS cables, spiral dampers are available.
These dampers are one piece weather and abrasion resistant plastic.
The helical design enables easy and reliable mounting, with the
smaller spiral attached to the cable.
Damping is achieved by differential movement of the helical rod
versus the cable.
Spiral damper:
weather and
abrasion resistant
plastic
Cone type tension clamps
Alternatively it is possible to use cone type
clamps to tension the OPGW cables.
These clamps work in the same way as wedge
tension clamps, but the wedges are cone
shaped. Cones are available with or without
jumper conections. Depending upon the
construction of the conductors or OPGW it
can be necessary to use reinforcing rods.
Cone diameters will be calculated acc. to the
conductor dimensions.
Cone type
tension clamp
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C–brackets
C-bracket supports offered in the table provide special type op-
tions, e.g. higher degrees of movement at the hinge connection,
providing movement >200° for the suspension clamp.
Full vertical orientation of the clamp is also possible. C-bracket
mounting base plates can also be adapted to suit specific tower
mounting plates.
A type with a central plate is also available.
For making it easier to measure earth resi-
stance, there is an insulating set.
This set can also be used for suspension and
tension brackets.
Then these brackets will be earthed on the
tower by means of flexible connections.
Earthwire suspension and tension brackets
There are many options available, both with
and without earth clamps. If only one conduc-
tor is to be clamped, the opposite groove can
be fitted with a filler piece.
Bracket attachments are not supplied with
screws as standard. These can be provided
separately once attachment details are confir-
med. Different clamp bore sizes and spacing
are also available, complete with corresponding screw lengths and
sizes.
Tension brackets can also be adapted to suit specific applications.
Suspension brackets for clamps with forged trunnion’s are available
as a split clamp bolted type fitting.
C-bracket with a
big degree of
freedom
Groundwire
bracket
Parallel groove
clamp with a
divided bracket
Groundwire
bracket with a
parallel groove
clamp
Suspension and tension clamps, including parallel groove clamps
that can also be used for conductors are described in Parts 4, 5
and 6.
Other accessories, shackles, links or turnbuckles can be found in
Part 3.
For Vibration control devices, please refer to Part 10.
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Eye-clevis connections are designed acc. to IEC 61471 and
DIN 48074 - Eyes and clevises; connecting dimensions, Bolts acc.
to DIN 48073 - Connecting bolts for overhead power lines.
Bolt security split pins are manufactured in stainless steel.
- All materials used are fully compatible with the conductor appli-
cation. For example, clamps attached to Aluminium based con-
ductors are manufactured from high strength corrosion resistant
aluminium alloys.
- Unless otherwise specified, all ferrous components are hot dip-
ped galvanized acc. to EN 61284 or ISO EN 1461; Overhead lines-
requirements and tests for fittings. Where stainless steel fasteners
are used, ISO EN 3506; Mechanical properties of corrosion resi-
stant stainless steel fasteners - Part 1: Bolts, screws and studs are
specified.
- For special cases where big dynamic loads may occur at low
temperatures, fittings made of low-temperature (cryogenic)
steels are available.
- For lines constructed in higher corrosive atmospheres and
environments, the minimum zinc thickness of fittings can be
increased from 85 μ to 110 μ or 130 μ Microns. - All fitting assemblies supplied have identification marking
according to EN 61284; this includes manufactures mark and date
code, specified minimum mechanical failure load, and 1 second
short circuit current withstand rating.
Material
Helical wire fittings
Helical wire fittings are made of formed round wire rods, with the
ends shaped depending on the material and diameter. The formed
diameters of the wires are smaller than the diameter of cable to be
applied. This creates uniform radial pre compression of the spiral
without permanent distortion of the wires or sub-sets. This applies
the initial low stress grip of the cable, which increases as a resultant
of higher tension forces that convert to high frictional grip. Uniform
radial loads and grip increase over a longer application and contact
length that provide low relative and uniform radial stress.
The main applications for helical wire fittings are reinforcement of
suspension points and tensioning of fibre optic cables.
For reinforcement of the Suspension point HSU with or without
reinforcing rods will be used.
Helical dead ends have multiple formed wires bonded together with
a formed loop for strain thimble attachment. The inside of the helix
of all helical tension fittings have a high friction textured finish to
improve grip. The materials used are fully compatible with the cable
being applied.
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Example of a HSU
Warning spheres and Stockbridge dampers will also be mounted
on helical rods.
Helical rods are also used to restore and repair cable damage. The
types of fittings required is dependent on the cable and type of da-
mage e.g. line guards, armour rods, repair sleeves, splices etc.
Identification and labelling of products are in accordance with
IEC 61284 (Rules of behaviour with respect to possible hazards
when dealing with electric equipment and equipment employing
similar techniques) will either be printed on individual rod sets or
stated on a label connected to the set.
The lay direction of the helical rods is normally same as that of the
outermost layer of the conductor, typically right hand lay.
The material used is the same as that of the conductor.
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C-bracket
material: steel, welded, hot dip galvanized
dimensions in mmL.-Nr.
A B C D E
max.vertical load
kN
max.horizontal load
kNkg
4654.01S 265 20 90 18 20 30 15 13,654654.03 310 20 90 18 20 30 15 18,404654.04 310 20 90 18 20 40 70 23,204654.01 265 20 90 18 20 45 20 12,80
C-brackets for conductor uplift and with other hole centres or equipped with insulating accessories
are available upon request.
Fastening screws can be delivered upon request.
Other types are available upon request.
HSU trunnion type, forged
for aluminium based OPGW conductors
material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C Dbolt kN kA 1s kg
4361.08/1 12,70 - 13,02 90 20 1800 19 80 32 2,204361.09/1 13,03 - 13,48 90 20 1800 19 80 32 2,304361.10/1 13,49 - 13,78 90 20 1800 19 80 32 2,304361.11/1 13,79 - 14,11 90 20 1800 19 80 32 2,404361.12/1 14,12 - 14,57 90 20 1800 19 80 32 2,404361.13/1 14,58 - 15,10 90 20 1800 19 80 32 2,404361.14/1 15,11 - 15,41 90 20 1800 19 80 32 2,404361.15/1 15,42 - 15,74 90 20 1800 19 80 32 2,404361.16/1 15,75 - 16,40 90 20 2000 19 80 32 2,204361.17/1 16,41 - 17,11 90 20 2000 19 80 32 3,10
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material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C Dbolt kN kA 1s kg
4361.18/1 17,12 - 17,45 90 20 2000 19 80 32 3,404361.19/1 17,55 - 18,05 90 20 2000 19 80 32 3,204361.20/1 18,06 - 18,58 90 20 2000 19 80 32 3,004361.21/1 18,59 - 19,07 90 20 2000 19 80 32 3,304361.22/1 19,08 - 19,52 120 20 2000 19 110 35 5,204361.23/1 19,53 - 20,21 120 20 2000 19 110 35 4,504361.24/1 20,22 - 20,95 120 20 2000 19 110 35 4,504361.25/1 20,96 - 21,48 120 20 2000 19 110 35 4,604361.26/1 21,49 - 22,11 120 20 2000 19 110 35 4,604361.27/1 22,12 - 22,70 120 20 2200 19 110 35 5,004361.28/1 22,71 - 23,05 120 20 2200 19 110 35 5,004361.29/1 23,06 - 23,38 140 20 2200 19 120 35 5,404361.30/1 23,39 - 23,82 140 20 2200 19 120 35 5,404361.31/1 23,83 - 24,45 140 20 2200 19 120 35 5,404361.32/1 24,46 - 25,06 140 20 2200 19 120 35 5,60
These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors
are available upon request.
The screw type bolts of these clamps have been mounted in line with the conductor axes. This will
help to improve mobility and reduce alternating bending strains caused by vibrations. In order to
minimize abrasion between the eyes and the screw type bolts, these parts are made of steel. HSU’s
(heliformed suspension units) can be used for a conductor angle of up to 30°. Conductor angles
of up to 60° will be possible if two bodies are connected by a suitable yoke plate via a combined
heliformed rod.
These HSU’s can also be used for ADSS Cables (All-Dielectric Self-Supporting Cables). In order
to select the correct product, detailed data about the conductor con�guration will be necessary.
Other dimensions are available upon request.
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HSU with reinforcing rods, trunnion type, forged
for aluminium based OPGW conductors
material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C D Ebolt kN kA 1s kg
4362.00/05 9,32 - 9,90 90 20 1270 1570 19 80 32 2,604362.00/09 9,91 - 10,26 90 20 1270 1670 19 80 32 2,704362.00/08 10,27 - 10,51 90 20 1370 1770 19 80 32 2,704362.00/07 10,52 - 10,97 90 20 1370 1770 19 80 32 2,804362.00/06 10,98 - 11,09 90 20 1370 1770 19 80 32 2,904362.00/1 11,10 - 11,40 90 20 1370 1770 19 80 32 2,904362.01/1 11,41 - 11,78 90 20 1370 1770 19 80 32 3,004362.02/2 11,79 - 11,91 90 20 1370 1770 19 80 32 3,004362.03/1 11,92 - 12,46 90 20 1400 1770 19 80 32 3,104362.05/1 12,47 - 12,93 90 20 1420 1820 19 80 32 3,204362.04/1 12,94 - 13,25 120 20 1520 1920 19 110 35 4,604362.06/1 13,26 - 13,38 120 20 1520 1920 19 110 35 4,604362.07/1 13,39 - 14,01 120 20 1520 1920 19 110 35 6,464362.08/1 13.95 117 1520 1920 19 70 35 3,804362.09/1 14,82 - 14,87 120 20 1630 1950 19 110 35 4,804362.10/1 14,88 - 15,28 120 20 1650 2050 19 110 35 4,904362.11/1 15,29 - 15,41 120 20 1650 2050 19 110 35 5,004362.12/1 15,42 - 15,63 120 20 1650 2080 19 110 35 5,104362.13/1 15,64 - 15,96 140 20 1680 2080 19 120 35 6,604362.16/1 15,97 - 16,02 140 20 1680 2080 19 120 35 6,024362.17/1 16,03 - 16,40 140 20 1680 2080 19 120 35 6,304362.18/1 16,41 - 16,65 140 20 1700 2080 19 120 35 6,604362.14/1 16,66 - 17,03 140 20 1700 2440 19 120 35 6,704362.19/2 17,04 - 17,26 140 20 1730 2440 19 120 35 6,904362.15/1 17,27 - 17,64 140 20 1730 2440 19 120 35 6,804362.21/1 17,65 - 17,87 140 20 1750 2440 19 120 35 6,804362.20/1 17,88 - 18,12 140 20 1750 2150 19 120 35 6,904362.22/1 18,13 - 18,55 150 20 2030 2480 19 110 35 10,804362.23/1 18,56 - 18,81 150 20 2080 2480 19 110 35 10,104362.24/1 18,82 - 19,01 150 20 2080 2480 19 110 35 10,204362.25/1 19,02 - 19,88 150 20 2080 2480 19 110 35 10,204362.26/1 19,89 - 20,13 150 20 2080 2480 19 110 35 10,404362.27/1 20,14 - 20,28 150 20 2080 2480 19 110 35 10,404362.29/1 20,29 - 20,99 150 20 2080 2480 19 110 35 10,404362.28/1 21,00 - 21,35 150 20 2080 2480 19 110 35 10,40
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material: aluminium, forged; aluminium-rods; steel, hot dip galvan-ized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C D Ebolt kN kA 1s kg
4362.30/1 21,36 - 21,45 150 20 2080 2480 19 110 35 10,604362.31/1 21,46 - 21,86 150 20 2080 2480 19 110 35 10,604362.32/1 21,87 - 22,44 150 20 2080 2480 19 110 35 10,604362.33/1 22,45 - 22,82 150 20 2080 2480 19 110 35 10,604362.34/1 22,83 - 23,51 155 20 2240 2640 19 120 40 12,804362.35/1 23,52 - 24,25 155 20 2240 2640 19 120 40 12,804362.36/1 24,26 - 25,06 155 20 2240 2640 19 120 40 12,904362.37/1 25,07 - 25,19 155 20 2240 2640 19 120 40 13,10
These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors
are available upon request.
The screw type bolts of these clamps have been mounted in line with the conductor axes. This will
help to improve mobility and reduce alternating bending strains caused by vibrations. In order to
minimize abrasion between the eyes and the screw type bolts, these parts are made of steel. HSU’s
(heliformed suspension units) can be used for a conductor angle of up to 30°. Conductor angles
of up to 60° will be possible if two bodies are connected by a suitable yoke plate via a combined
heliformed rod.
HSU’s with an additional reinforcing rod will preferably be used for cable types that are particularly
sensitive for instance in the case of optical cables.
These HSU’s can also be used for ADSS Cables (All-Dielectric Self-Supporting Cables). In order
to select the correct product, detailed data about the conductor con�guration will be necessary.
Other dimensions are available upon request.
HSU with aluminium belt, casted
for aluminium based OPGW conductors
material: aluminium, casted; aluminium, extruded; aluminium-rods; steel, hot dip galvanized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C D boltkN kA 1s kg
4361.01/3/A 9,91 - 10,28 55 22 1800 16 50 25 1,204361.02/3/A 10,29 - 10,63 55 22 1800 16 50 25 1,20
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material: aluminium, casted; aluminium, extruded; aluminium-rods; steel, hot dip galvanized; neoprene
dimensions in mmL.-Nr.
cond.Ø B C D boltkN kA 1s kg
4361.03/3/A 10,64 - 11,04 55 22 1800 16 50 25 1,404361.04/3/AL 11,05 - 11,45 55 22 1800 16 50 25 1,104361.04/3/A 11,05 - 11,45 55 22 1800 16 50 25 2,054361.05/3/A 11,46 - 11,95 55 22 1800 16 50 25 1,204361.05/3/AL 11,46 - 11,95 55 22 1800 16 50 25 1,204361.06/3/A 11,96 - 12,23 55 22 1800 16 50 25 1,904361.07/3/A 12,24 - 12,69 55 22 1800 16 60 25 1,504361.08/3/A 12,70 - 13,02 55 22 1800 16 60 25 1,504361.09/3/A 13,03 - 13,48 55 22 1800 16 60 25 1,504361.10/3/A 13,49 - 13,78 55 22 1800 16 60 25 1,504361.11/3/A 13,79 - 14,11 53 22 1800 16 70 25 1,804361.12/3/A 14,12 - 14,57 53 22 1800 16 70 25 2,004361.13/3/A 14,58 - 15,10 53 22 1800 16 70 25 2,004361.14/3/A 15,11 - 15,41 53 22 1800 16 70 25 1,904361.15/3/A 15,42 - 15,74 53 22 1800 16 70 25 1,944361.16/3/A 15,75 - 16,40 53 22 2000 16 70 25 2,004361.17/3/A 16,41 - 17,11 63 22 2000 16 70 25 2,404361.18/3/A 17,12 - 17,54 63 22 2000 16 70 25 2,404361.19/3/A 17,55 - 18,05 63 22 2000 16 70 25 2,504361.20/3/A 18,06 - 18,58 63 22 2000 16 70 25 2,504361.21/3/A 18,59 - 19,07 63 22 2000 16 70 25 2,504361.22/3/A 19,08 - 19,52 70 22 2000 16 100 25 4,204361.23/3/A 19,53 - 20,21 70 22 2000 16 100 25 3,754361.24/3/A 20,22 - 20,95 70 22 2000 16 100 25 4,204361.25/3/A 20,96 - 21,48 70 22 2000 16 100 25 4,204361.26/3/A 21,49 - 22,11 70 22 2000 16 100 25 4,20
These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors
are available upon request.
These HSU are also available with reinforcing rods upon request.
HSU for ADSS-conductors are available upon request.
Other dimensions are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Earthwire bracket with parallel groove clamp, double
for aluminium based conductors
material: aluminium; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C D Ebolt kN kA 1s kg
4652.02 8,2 - 11,7 230 21 90 18 90 19 100 30 3,894652.03 11,8 - 15,8 230 21 90 18 90 19 100 20 3,884652.04 15,9 - 19,2 230 21 90 18 90 19 100 20 4,054652.06/8 17,3 - 19,2 300 20 90 18 90 19 230 40 7,604652.06/1 19,1 - 21,0 300 20 90 18 90 19 230 40 7,804652.06/2 21,1 - 23,4 300 20 90 18 90 19 230 40 8,37
Earth wire brackets without parallel groove clamps or with parallel groove clamps that are made
of other materials and have other hole centres can be delivered upon request.
Fastening screws can be delivered upon request.
Filling pieces for the clamp groove can be delivered, if necessary.
Other types are available upon request.
Earthwire bracket with parallel groove clamp, triple
for aluminium based conductors
material: aluminium; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C D E Fbolt kN kA 1s kg
4653.10/1 8,20 - 11,70 222 21 90 18 90 151 19 160 32 5,674653.13 11,80 - 15,80 222 21 90 18 90 151 19 160 32 7,604653.09/1 15,80 - 19,20 214 21 90 18 90 148 19 160 32 5,85
Earth wire brackets without parallel groove clamps or with parallel groove clamps that are made
of other materials and have other hole centres can be delivered upon request.
Fastening screws can be delivered upon request.
Filling pieces for the clamp groove can be delivered, if necessary.
Models with only one parallel groove clamp are available upon request.
Other types are available upon request.
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Earthwire bracket with parallel groove clamp, quad
for aluminium based conductors
material: aluminium; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A B C D Ebolt kN kA 1s kg
4653.40/2 8,20 - 11,70 252 21 90 18 90 19 160 32 6,604653.40 11,80 - 13,00 252 21 90 18 90 19 160 32 6,624653.0001 15,90 - 19,20 252 21 90 18 90 19 160 32 5,804653.40/1 19,30 - 24,60 252 21 90 18 90 19 160 32 7,00
Earth wire brackets without parallel groove clamps or with parallel groove clamps that are made
of other materials and have other hole centres can be delivered upon request.
Fastening screws can be delivered upon request.
Filling pieces for the clamp groove can be delivered, if necessary.
Other types are available upon request.
Shunt copper, insulated
material: high �exible copper wire, insulated; copper, tinned; steel,hot dip galvanized
dimensions inmmL.-Nr.
A B
cross sectionsq mm screw kA 1s kg
4664.01/3A 500 17 70 M12 X 30 14 0,604664.01/5A 1000 17 70 M12 X 30 14 1,004664.01/6A 1500 17 70 M12 X 30 14 1,304664.31/1A 500 17 95 M12 X 35 19 0,72
Other lenghts and connections are available upon request.
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Shunt copper, with connection screw for clamps
material: high �exible copper wire, insulated; copper, tinned
dimensionin mmL.-Nr.
A
cross sectionsq mm D1 D2 kA 1s kg
4664.03 500 70 M12 X 35 M12 X 20 14 0,604664.31/1 500 95 M12 X 35 M12 X 20 19 0,75
Other lenghts and connections are available upon request.
Shunt aluminium
material: aluminium; steel, hot dip galvanized
dimensionin mmL.-Nr.
A
cross sectionsq mm screw kA 1s kg
4664.35 500 70 M12 X 35 8 0,204664.35/1 1000 70 M12 X 35 8 0,304664.36 1000 95 M12 X 35 11 0,394664.0004 1000 95 M12 X 35 11 0,444664.36/1 1500 95 M12 X 35 11 0,514664.45 1000 120 M12 X 35 14 0,454664.45/10 1500 120 M12 X 35 14 0,70
Other lenghts and connections are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Heliformed dead end with thimble and reinforcing rods
for aluminium based conductors
material: aluminium, casted; steel, hot dip galvanized
dimensions in mmL.-Nr. cond.Ø mm
A B1 B2 Ckg
4480.06 7,25 - 8,53 870 1800 450 20 1,804480.03 8,54 - 10,45 900 1800 430 20 2,004480.00 10,47 - 11,50 1000 2000 475 20 2,404480.01 11,51 - 12,50 1200 2200 407 20 3,234480.02 12,51 - 13,26 1200 2500 573 20 3,504480.04 13,27 - 14,50 1500 2500 435 20 4,524480.05 14,51 - 15,50 1500 2900 533 20 5,034480.07 15,51 - 16,80 1600 3000 514 20 5,584480.08 16,81 - 17,80 1600 3000 550 20 5,904480.09 17,81 - 18,50 1700 3000 464 20 6,144480.10 18,51 - 19,70 1900 3000 550 20 7,554480.11 19,71 - 21,28 2000 3300 650 20 9,234480.12 21,29 - 22,00 2200 3300 513 20 10,184480.13 22,01 - 23,00 2200 3500 645 20 10,904480.14 23,01 - 23,60 2200 3500 675 20 10,904480.15 23,61 - 24,40 2400 3500 574 20 12,204480.16 24,41 - 25,30 2400 3500 608 20 12,404480.18 26,21 - 27,20 2400 3500 670 20 12,60
These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors
are available upon request.
Dead ends for ACS-strands in the outer layer are available upon request.
Dead Ends for ADSS-conductors are available upon request.
Other dimensions are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
Stockbridge damper with casted clamp
for aluminium based conductors
material: aluminium, casted; steel, hot dip galvanized; cast iron,hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø screwsversion kg
9301.01/G/1 7,0 - 14,0 M10 1 1,709301.0010 7,0 - 14,0 M10 2 1,509303.01/G/1 7,0 - 14,0 M10 2 2,109301.03/G/1 14,0 - 16,5 M10 1 1,819303.03/G/1 14,0 - 16,5 M10 2 2,209303.04/G/1 14,0 - 19,0 M12 2 2,239301.04/G/1 16,6 - 19,0 M10 1 1,809301.020/G/1 19,0 - 29,0 M14 1 2,109304.021/G/1 19,0 - 29,0 M14 1 4,209306.03/G/1 19,0 - 29,0 M14 1 6,009303.006/G/1 19,0 - 29,0 M14 2 2,559305.06/G/1 19,0 - 29,0 M14 2 5,309304.10/G/1 28,5 - 41,0 M14 1 4,269306.07/G/1 28,5 - 41,0 M14 1 6,109303.10/G/1 28,5 - 41,0 M14 2 2,609305.07/G/1 28,5 - 41,0 M14 2 5,17
Version 1 covers two resonant frequencies and version 2 covers four resonant frequencies.
The weights are casted onto the messenger wire. Models with compression sleeve are available
upon request.
Models with stainless steel messenger wire are available upon request.
Other types are available upon request.
Stockbridge damper with forged clamp
for aluminium based conductors
material: aluminium, forged; steel, hot dip galvanized; cast iron,hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø screwsversion kg
9301.020/EA1 11,0 - 14,5 M10 1 1,509303.020/EA1 11,0 - 14,5 M10 2 2,109301.030/EA1 14,5 - 17,0 M10 1 1,599303.030/EA1 14,5 - 17,0 M10 2 2,059301.040/EA1 17,0 - 19,5 M10 1 1,579301.050/EA1 19,5 - 22,0 M12 1 1,659304.050/EA1 19,5 - 22,0 M12 1 3,959303.050/EA1 19,5 - 22,0 M12 2 2,059301.060/EA1 22,0 - 24,5 M12 1 1,799304.060/EA1 22,0 - 24,5 M12 1 3,809303.060/EA1 22,0 - 24,5 M12 2 2,079301.070/EA1 24,5 - 28,0 M12 1 1,919304.070/EA1 24,5 - 28,0 M12 1 4,009303.070/EA1 24,5 - 28,0 M12 2 2,339304.080/EA1 28,0 - 31,0 M12 1 4,00
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material: aluminium, forged; steel, hot dip galvanized; cast iron,hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø screwsversion kg
9303.080/EA1 28,0 - 31,0 M12 2 2,209304.090/EA1 31,0 - 33,0 M12 1 4,009306.090/EA1 31,0 - 33,0 M12 1 5,909303.090/EA1 31,0 - 33,0 M12 2 2,409304.100/EA1 33,0 - 35,0 M12 1 4,109303.100/EA1 33,0 - 35,0 M12 2 2,609304.110/EA1 35,0 - 38,0 M12 1 4,329306.110/EA1 35,0 - 38,0 M12 1 6,209308.110/EA1 35,0 - 38,0 M12 1 8,109304.120/EA1 38,0 - 42,0 M12 1 4,109306.120/EA1 38,0 - 42,0 M12 1 6,329304.130/EA1 42,0 - 46,0 M12 1 4,109306.130/EA1 42,0 - 46,0 M12 1 6,00
Version 1 covers two resonant frequencies and version 2 covers four resonant frequencies.
The weights are casted onto the messenger wire. Models with compression sleeve are available
upon request.
Models with stainless steel messenger wire are available upon request.
Other types are available upon request.
Down lead clamp
material: aluminium; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A C
�xingbolt
kg
4680.27 8,2 - 11,7 40 22 M8 0,354680.27/01 11,8 - 13,0 40 22 M8 0,344680.27/04 13,1 - 14,4 40 22 M8 0,424680.27/1 14,5 - 16,0 40 22 M8 0,424680.27/1/1 15,9 - 17,4 40 22 M8 0,424680.27/2 17,5 - 19,2 40 22 M8 0,70
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
material: aluminium; steel, hot dip galvanized
dimensions in mmL.-Nr.
cond.Ø A C
�xingbolt
kg
4680.27/2/1 19,3 - 21,2 40 22 M8 0,464680.27/2/3 21,3 - 22,8 40 22 M8 0,464680.27/2/2 22,9 - 24,6 40 22 M8 0,52
Down lead clamps will be used to �x the �bre optic cable to be led off on the corner leg of the
tower. When doing so, it will be particularly important to adapt the groove to the diameter of
the OPGW-earthwire. There are many special models. Some examples:
The clamps will be mounted while offsetting them by different angles, which range up to 90°. For
this purpose, the clamps will be provided with a replaceable clamping bolt, which can optionally
also be installed with an offset of 90°.
Fastening with other screwing systems or stainless screws as well as ribbons also is possible.
Clamps serving for fastening on towers made of wood or concrete also are obtainable.
Clamps with insulating sleeves that will, in connection with an insulating set for the earthwire
tension brackets, make it easier to measure the earthing resistance can be purchased upon request.
Clamps with one-sided �lling pieces are obtainable upon request.
Other dimensions are available upon request.
Heliformed spiral vibration damperfor all materials
material: PVC
dimensions in mmL.-Nr.
cond.Ø Akg
9320.04 6,35 - 8,30 1240 0,30
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice
material: PVC
dimensions in mmL.-Nr.
cond.Ø Akg
9320.05 8,31 - 11,72 1300 0,289320.06 11,73 - 14,32 1345 0,329320.07 14,33 - 19,30 1615 0,93
Spiral dampers are particularly suitable for damping the high-frequent vibrations of thin OPGW’s
(optical ground wires). Assembly will be done right after the end of the �ttings.
Other dimensions are available upon request.
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Mosdorfer GmbH. 8160 Weiz, Austria. Phone +43 3172 2505-0, of�[email protected], www.mosdorfer.com, Edition 2016 Subject to change without notice