PRODUCT CATALOGUE Substation Clamps · 2 Substation Clamps Regarding the conductor dimensions, the tolerances are of special importance as they influence the dimensional coordination

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OVERHEAD LINES

PRODUCT CATALOGUE

Substation ClampsFor Stranded Conductors

2

Substation Clamps

Regarding the conductor dimensions, the tolerances are of special importance as they influence the dimensional coordination of conductor to conductor groove. In the case of clamps for stranded conductors, the conductor structure normally adjusts to the clamp body which is of higher flexural stiffness.

It is important that before assembling the clamps the conductors and contact surfaces of the clamps are to be cleaned with a steel brush and greased immediately prior to assembly.

Application Pfisterer (Pty) Ltd manufactures and markets a compre-hensive range of aluminium substation clamps for use in all electrical conductor applications. These clamps are manufactured to the company’s own designs and/or to meet specific customer requirements.

Substation clamps are important components within a substation since they are an integral part of the current path. If the clamps are not properly designed, manu-factured and tested to operate under both normal and abnormal conditions, then the integrity of the whole power network may be compromised.

Quality Construction

The clamps in this catalogue are intended for substa-tions with stranded conductors. Their design, material and dimensions ensure connections that are capable of carrying continuous current and resisting short circuits throughout the operating life of the system without requiring any maintenance. Practical experience has shown that a high reliability of the clamps can only be attained by many years of experience and by constantly updating the clamp designs in compliance with the in-creasing system capacities.

Technical

All clamps in this catalogue are established designs, de-veloped on the basis of thorough tests and considera-tions, and many of these clamps have proved successful over decades. We are convinced that the installation of our clamps means a substantial contribution toward an increased operating safety and technical reliability. Cur-rent - carrying clamps are mainly used for making:

Connections Branch Connections Equipment Terminations

These applications require clamps of different basic con-struction (straight clamps, T-type clamps or flat clamps)For the selection of current - carrying clamps it is very important to know the continuous current and short circuit current ratings. In accordance with the respec-tive requirements, clamps with one or more covers are recommended. The clamps listed in this catalogue are designed for electrical and thermal loads under normal boundary conditions.

In the case of fittings intended for installations with op-erating voltages above 123 kV, the occurrence of prema-ture corona discharges must be avoided. Since the level of corona discharge inception voltage depends on the external radius, the clamp contour must be designed accordingly. Therefore the contours of our substation clamps are so designed as to exclude critical values of the surface field intensity at nominal voltage. The listed clamps are suitable for voltage levels from 145 kV to 420 kV.

Installation

3

127 001 - 000 Type ‘EX’

Type Designation

Pfisterer Number

Stem Diameter ‘A’ (mm)

Conductor Diameter ‘B’ (mm)

Normal Rated Current @ 90°C

(A rms)

Maximum Voltage[Um]

(kV rms)

EX - A 127 001-001 26 16.3 500 145

EX-B 127 001-002 26 26.5 900 300

EX-C 127 001-003 38 16.3 500 145

EX-D 127 001-004 38 26.5 900 300

EX-E 127 001-005 38 38.3 1350 420

EX-F 127 001-006 38 19.0 600 300

EX-G 127 001-007 35 26.5 900 300

EX-H 127 001-008 35 38.3 950 420

EX-J 127 001-009 26 19.0 600 300

EX-K 127 001-010 26 21.0 650 300

EX-B (MOD) 127 001-011 28.6 28.6 900 300

4

127 002 - 000 Type ‘EXC’

Type Designation

Pfisterer Number

Stem Diameter ‘A’

(mm)

Conductor Diameter ‘B’

(mm)

Angle of off-set


(A rms)

Maximum Volt-age [Um](kV rms)

EXC - A 127 002-001 26 26.5 0° 900 300

EXC-B 127 002-002 38 26.5 0° 900 300

EXC-C 127 002-003 38 38.3 0° 1350 420

EXC-D 127 002-004 38 38.3 45° 1350 420

EXC-E 127 002-005 38 38.3 90° 1350 420

EXC-F 127 002-006 38 26.5 45° 900 300

EXC-G 127 002-007 38 26.5 90° 900 300

EXC-H 127 002-008 38 18.1 0° 500 245

EXC-J 127 002-009 35 26.5 0° 500 300

EXC-K 127 002-010 35 38.3 0° 1200 420

EXC-L 127 002-011 26 26.5 45° 900 300

EXC-M 127 002-012 26 18.1 0° 500 245

EXC-N 127 002-013 40 26.5 0° 900 300

EXC-P 127 002-014 60 38.3 0° 1350 420

EXC-Q 127 002-015 60 38.3 45° 1350 420

EXC-R 127 002-016 60 38.3 90° 1350 420

EXC-D (MOD) 127 002-017 38 30 45° 900 300

EXC-L (MOD) 127 002-018 26 30 45° 900 300

127 003 - 000 Type ‘ETC‘

5

Type Designation

Pfisterer Number

Run Diameter ‘A’

(mm)

Tap Diameter ‘B’

(mm)

Angle of off-set


(A rms)

Maximum Voltage [Um]

(kV rms)ETC - A 127 003-001 23.5 26.5 0° 650 300

ETC - B 127 003-002 23.5 38.3 0° 650 300

ETC-C 127 003-003 26.5 26.5 0° 900 300

ETC-D 127 003-004 26.5 38.3 0° 900 300

ETC-E 127 003-005 28.6 26.5 0° 900 300

ETC-F 127 003-006 28.6 38.3 0° 900 300

ETC-G 127 003-007 35.6 26.5 0° 900 300

ETC-H 127 003-008 35.6 38.3 0° 1100 420

ETC-J 127 003-009 38.3 26.5 0° 900 300

ETC-K 127 003-010 38.3 38.3 0° 1350 420

ETC-L 127 003-011 18.1 26.5 0° 450 145

ETC-M 127 003-012 18.1 18.1 0° 450 145

ETC-N 127 003-013 26.5 18.1 0° 450 145

ETC-P 127 003-014 38.3 18.1 0° 450 145

ETC-Q 127 003-015 38.3 16 0° 450 145

ETC-R 127 003-016 26.5 16 0° 450 145

ETC-S 127 003-017 16 16 0° 450 145

ETC-T 127 003-018 26.5 26.5 45° 900 300

ETC-U 127 003-019 38.3 26.5 45° 900 300

ETC-V 127 003-020 38.3 38.3 45° 1350 420

ETC-W 127 003-021 18.1 16.25 0° 450 145

ETC-X 127 003-022 26.5 16.25 0° 450 145

ETC-Y 127 003-023 38.3 16.25 0° 450 145

ETC-Z 127 003-024 25.97 26.5 0° 800 300

ETC-AA 127 003-025 25.97 38.3 0° 800 300

ETC-AB 127 003-026 24.71 26.5 0° 750 145

ETC-AC 127 003-027 24.71 38.3 0° 750 145

ETC-AD 127 003-030 22.61 26.5 0° 650 145

ETC-AE 127 003-031 22.61 38.3 0° 650 145

6

127 004 - 000

Product RangeType ‘EYC‘

Type Designation

Pfisterer Number


(mm)


(mm)

Angle of off-set


(A rms)


(kV rms)EYC-A 127 004-001 38 26.5 0 ° 1600 300

EYC-B 127 004-002 38 38.3 0 ° 2500 400

EYC-C 127 004-003 38 26.5 45 ° 1600 300

EYC-D 127 004-004 38 38.3 45 ° 2500 420

EYC-E 127 004-005 38 26.5 90 ° 1600 300

EYC-F 127 004-006 38 38.3 90 ° 2500 420

EYC-G 127 004-007 60 38.3 0 ° 2700 420

EYC-H 127 004-008 60 38.3 45 ° 2700 420

EYC-J 127 004-009 60 38.3 90 ° 2700 420

EYC-K 127 004-010 26 26.5 0 ° 1000 300

EYC-L 127 004-011 26 26.5 45 ° 1000 300

EYC-M 127 004-012 26 26.5 90 ° 1000 300

EYC-N 127 004-013 9 Bolt Pad 38.3 0 ° 2700 420

EYC-P 127 004-014 9 Bolt Pad 38.3 45 ° 2700 420

EYC-Q 127 004-015 9 Bolt Pad 38.3 90 ° 2700 420

EYC-R 127 004-016 8 Bolt Pad 38.3 0 ° 2700 420

EYC-S 127 004-017 8 Bolt Pad 38.3 45 ° 2700 420

EYC-T 127 004-018 8 Bolt Pad 38.3 90 ° 2700 420

EYC-U 127 004-019 9 Bolt Pad 26.5 0 ° 1700 300

EYC-V 127 004-020 9 Bolt Pad 26.5 45 ° 1700 300

EYC-X 127 004-021 8 Bolt Pad 26.5 0 ° 1700 300

EYC-Y 127 004-022 8 Bolt Pad 26.5 45 ° 1700 300

EYC-Z 127 004-023 8 Bolt Pad 26.5 90 ° 1700 300

EYC-AA 127 004-024 60 26.5 0 ° 1700 300

EYC-AB 127 004-025 60 26.5 45 ° 1700 300

EYC-AC 127 004-026 60 26.5 90 ° 1700 300

EYC-W 127 004-027 9 Bolt Pad 26.5 90 ° 1700 300

7

127 005 - 000 Type ‘EPC‘

Type Designation

Pfisterer Number


(mm)

Pad Dimensions

(mm)

Angle of off-set


(A rms)


(kV rms)

EPC-A 127 005-001 26.5

4 X Ø14 HOLES 50X50 CENTRES

0 ° 900 245

EPC-B 127 005-002 26.5 45 ° 900 245

EPC-C 127 005-003 26.5 90 ° 900 245

EPC-D 127 005-004 38.3


0 ° 1350 300

EPC-E 127 005-005 38.3 45 ° 1350 300

EPC-D 127 005-006 38.3 90 ° 1350 300

EPC-G 127 005-007 26.5


0 ° 900 245

EPC-H 127 005-008 26.5 45 ° 900 245

EPC-J 127 005-009 26.5 90 ° 900 245

EPC-K 127 005-010 38.3


0 ° 1350 300

EPC-L 127 005-011 38.3 45 ° 1350 300

EPC-M 127 005-012 38.3 90 ° 1350 300

EPC-N 127 005-013 26.5 UNDRILLED 0 ° 900 245

EPC-P 127 005-014 38.3 UNDRILLED 0 ° 1350 300

8

Product Range

127 006 - 000 Type ‘EUT‘

Type Designation

Pfisterer Number

Run Diameter ‘A’

(mm)


(mm)


(A rms)


(kV rms)

EUT - A 127 006-001 6-11 6-11 250 145

EUT - B 127 006-002 12-21 12-21 500 145

EUT - C 127 006-003 12-21 22-28 500 145

EUT - D 127 006-004 22-28 12-21 250 145

EUT - E 127 006-005 22-28 22-28 500 145

EUT - F 127 006-007 12-21 6-11 250 145

EUT - C (MOD) 127 006-006 12-21 6-11 250 145

9

127 007 - 000 Type ‘EYC3‘

Type Designation

Pfisterer Number


(mm)


(mm)

Angle of off-set


(A rms)


(kV rms)

EYC3-A 127 007-001 60 38.3 0 ° 4000 420

EYC3-B 127 007-002 9 Bolt Pad 38.3 0 ° 4000 420

EYC3-C 127 007-003 60 38.3 45 ° 4000 420

EYC3-D 127 007-004 9 Bolt Pad 38.3 45 ° 4000 420

EYC3-E 127 007-005 60 38.3 90 ° 4000 420

EYC3-F 127 007-006 9 Bolt Pad 38.3 90 ° 4000 420

EYC3-G 127 007-007 8 Bolt Pad 38.3 0 ° 4000 420

EYC3-H 127 007-008 8 Bolt Pad 38.3 45 ° 4000 420

EYC3-J 127 007-009 8 Bolt Pad 38.3 90 ° 4000 420

10

Sub Station Clamps

Type Designation

Pfisterer Number


(mm)

Spacing ‘S’(mm)

Number of Conductors


(A rms)


(kV rms)

ESC-A 127 008-001 26.5 150 2 900 300

ESC-B 127 008-002 38.3 150 2 1350 420

ESC-C 127 008-003 26.5 330 2 900 300

ESC-D 127 008-004 38.3 330 2 1350 420

ESC-E 127 008-005 38.3 165 3 1350 420

127 008 - 000 Type ‘ESC‘

11

Type Designation

Pfisterer Numer


(mm)

Conductor Diameter ‘B‘

(mm)

Angle of off-set


(A rms)


(kV rms)

EYC2-A 127 009-001 60 38.3 0 ° 2700 420

EYC2-B 127 009-002 9 Bolt Pad 38.3 0 ° 2700 420

EYC2-C 127 009-003 60 38.3 45 ° 2700 420

EYC2-D 127 009-004 9 Bolt Pad 38.3 45 ° 2700 420

EYC2-E 127 009-005 60 38.3 90 ° 2700 420

EYC2-F 127 009-006 9 Bolt Pad 38.3 90 ° 2700 420

EYC2-G 127 009-007 8 Bolt Pad 38.3 0 ° 2700 420

EYC2-H 127 009-008 8 Bolt Pad 38.3 45 ° 2700 420

EYC2-J 127 009-009 8 Bolt Pad 38.3 90 ° 2700 300

EYC2-K 127 009 -010 26 26.5 0 ° 1700 300

EYC2-L 127 009-011 26 26.5 45 ° 1700 300

EYC2-M 127 009-012 26 26.5 90 ° 1700 300

EYC2-N 127 009-013 38 38.3 0 ° 2700 420

EYC2-P 127 009-014 38 38.3 45 ° 2700 420

EYC2-Q 127 009-015 38 38.3 90 ° 2700 420

127 009 - 000 Type ‘EYC2‘

12

127 010 - 000 Type ‘EY3‘

Type Designation

Pfisterer Number


(mm)


(mm)


(A rms)


(kV rms)

EY3-B 127 010-001 60 38.3 3150 420

EY3-A 127 010-002 38 38.3 2500 420

13

127 011 - 000 Type ‘EYBC‘

Type Designation

Pfisterer Number


(mm)


(mm)

Spacing ‘S’(mm)


(A rms)


(kV rms)

EYBC-A 127 011-001 26.5 26.5 150 900 300

EYBC-B 127 011-002 38.3 38.3 330 1350 420

EYBC-C 127 011-003 26.5 26.5 150 900 300

EYBC-E 127 011-004 38.3 38.3 330 1350 420

EYBC-D 127 011-005 38.3 38.3 150 1350 420

14

Type Designation

Pfisterer NumberConductor

Diameter ‘B‘ (mm)Spacing ‘S’

(mm)Number

of Conductors


(kV rms)

ES - A 127 012-001 26.5 150 2 300

ES - B 127 012-002 38.3 150 2 420

ES - C 127 012-004 26.5 330 2 300

ES - D 127 012-005 38.3 330 2 420

ES - E 127 012-003 38.3 165 3 420

127 012 - 000 Type ‘ES‘

15

127 013 - 000 Type ‘EY‘

Type Designation

Pfisterer Number

Stem Diameter ‘A’ (mm)

Conductor Diameter ‘B‘ (mm)

Angle of off-set


(A rms)


(kV rms)EY-A 127 013-001 38 26.5 0 ° 1600 300

EY-B 127 013-002 38 38.3 0 ° 2500 420

EY-C 127 013-003 38 26.5 90 ° 1600 300

EY-D 127 013-004 38 38.3 90 ° 2500 420

EY-E 127 013-005 26 26.5 0 ° 1000 300

EY-F 127 013-006 26 26.5 90 ° 1000 300

EY-G 127 013-010 26 38.3 90 ° 1000 420

EY-H 127 013-007 26 38.3 0 ° 1000 420

EY-J 127 013-011 60 38.3 0 ° 2500 420

EY-A + EY-C 127 013-008 38 26.5 0/90 ° 1600 300

EY-B+ EY-D 127 013-009 38 38.3 0/90 ° 2500 420

EY-G+ EY-H 127 013-012 26 38.3 0/90 ° 1000 420

16

Sub Station Clamps

Type Designation

Pfisterer NumberConductor

Diameter ‘B‘ (mm)


(A rms)


(kV rms)

EXP-A 127 014-001 26 900 245

EXP-B 127 014-002 38 1350 300

127 014 - 000 Type ‘EXP‘

17

Type ‘EEPC‘

Type Designation Pfisterer NumberRun

Diameter ‘A’(mm)


(mm)


(A rms)


(kV rms)

EEPC-A 127 015-001 16.3 26 900 300

EEPC-B 127 015-002 38.3 26 900 420

EEPC-C 127 015-003 26.5 26 900 300

127 015 - 000

18

127 016 - 000 Type ‘EXCP‘

Type Designation Pfisterer NumberConductor

Diameter ‘B‘ (mm)

Base PCD ‘P’ (mm)Normal Rated

Current @ 90°C (A rms)


(kV rms)

EXCP-A 127 016-001 26.5 76 900 145

EXCP-B 127 016-002 26.5 127 900 145

EXCP-C 127 016-003 38.3 76 1350 145

EXCP-D 127 016-004 38.3 127 1350 145

19

Type Designation

Pfisterer Number


(mm)


(mm)

Angle of off-set


[A rms]


(kV rms)

EY2-A + EY2-C 127 017-001 38 26.5 0/90 ° 1600 420

EY2-B+ EY2-D 127 017-002 38 38.3 0/90 ° 2500 420

EY2-A 127 017-003 38 26.5 0 ° 1600 420

EY2-B 127 017-004 38 38.3 0 ° 2500 420

EY2-C 127 017-005 38 26.5 90 ° 1600 420

EY2-D 127 017-006 38 38.3 90 ° 2500 420

127 017 - 000 Type ‘EY2‘

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Documents

PRODUCT CATALOGUE Substation Clamps · 2 Substation Clamps Regarding the conductor dimensions, the tolerances are of special importance as they influence the dimensional coordination