Upload
jarrett-mathews
View
513
Download
69
Embed Size (px)
DESCRIPTION
igirex Catal
Citation preview
We do more with electricity
Earth fault relays withseparate toroids
Vigirex Merlin GerinCatalogue
3earth fault relayswith separate toroids
Vigirexpage
1/ presentation 22/ functions and 5characteristics
3/ installation 13and connection
4/ complementary 17technical information
5/ catalogue numbers 23
4 Merlin Gerin
operation and useOperationVigirex relays are designed for use on lowvoltage AC installations. When the residualcurrent detected by the toroid exceeds acertain threshold, referred to as the residualoperating current In, the Vigirex relay tripsthe associated circuit breaker via a voltagerelease on the breaker.The control signal issued by the relay maybe instantaneous or delayed.Depending on the model, the operatingthresholds and time delays may or may notbe adjustable.UseVigirex relays are used on low voltage ACinstallations with TT, IT or TNS systemearthing arrangements for voltages up to1000 V AC and frequencies up to 400 Hz.They are particularly well suited for use withCompact and Masterpact circuit breakersequipped with voltage releases.
The choice of the right Vigirex relay model fora given application depends on the type ofprotection required:c additional protection against direct contact;c protection against indirect contact;c protection against fire hazards;c source ground fault protection;c motor protection.These five types of protection are covered bystandards and correspond to different currentthresholds and time delays on the products.
Vigirex: presentationearth fault relays with separate toroids
E263
50 321NPE
Vigirex
Vigirex:earth fault protectionThe purpose of earth fault protection is tomeasure the earth leakage current of anelectrical installation, or part of aninstallation, and interrupt the supply of powerif this current becomes dangerous to life orproperty.Vigirex is a range of earth fault relays withseparate toroids, a solution offering bothflexibility and performance.
functionsDiscrimination and settingsc discriminationDiscrimination consists in:v dividing the installation into a number ofgroups of circuits and protecting each groupwith an appropriate residual current device,v coordinating the upstream and downstreamdevices such that only the faulty section isshut down.c settingsDiscrimination is said to be total if theprotection devices meet two conditions:v the non-operating current of the upstreamdevice is higher than the operating current ofthe downstream device,v the non-operating time of the upstreamdevice is longer than the operating time of thedownstream device.Vigirex relays can be set to obtain up to eightlevels of discrimination, extending from thefinal outgoers up to the circuit breaker at thehead of installation.In/2 alarm thresholdVigirex type AP relays have an alarmthreshold that warns of a non-criticaldegradation of the insulation, leaving time tocarry out preventive maintenance.The alarm threshold is set automatically atIn/2, where I/n is the residual operatingcurrent.The alarm is indicated by a LED and operatesan auxiliary contact.
Auxiliary power alarmLoss of the auxiliary power supplying Vigirexrelays is indicated by a LED on the front ofthe device and by the operation of a fail-safealarm contact.Indication and protectionVigirex relays are available in two versions:c without earth fault memory: indication only.Non-latching relay;c with earth fault memory: indication andcircuit breaker tripping. Latching relay.
standardsc IEC 364 ch 4 and 5;c IEC 755;c IEC 947.2 appendix B;c UTE C 60-130;c VDE 664;c NF C 61-141 ad. 1;c NF C 15-100.
toroidsVigirex relays are used with closed (type A,diameter 30 to 300 mm) or split (type OA,diameter 46 to 110 mm) toroids. All toroidsare easy to mount due to a wide range ofinstallation possibilities.
E264
08
HV/LV
ID n = 300 mAt = 250 msRH ...
ID n = 100 mAt = 90 msRH ...
ID n = 30 mAt = 0 sRH ...
RH ... ID n = 1At = 500 ms
0425
87
Merlin Gerin 5
MERLIN GERIN
RH328A
test
reset
on
1 2 3 4 5 6
7 8 9 10 11 12 13 14
vigirex
screw terminals
In/2 alarm
auxiliary power
fault
test
reset
In setting
sealable cover
time delays
screw terminals
RH328APEarth fault relay32 residual operating current settings In8 time delaysauxiliary power alarmIn/2 alarm
main characteristics of atype AP relayc d immunity to nuisance tripping;c k class A direct component withstand;c continuous monitoring of the detectioncircuit;c operation under all unbalanced phaseconditions;c status indications:v red LED: fault,v orange LED: alarm threshold exceeded(warning),v green LED: auxiliary power on;c discrimination over several levels so thatonly the faulty circuit is shut down;c fault alarm with or without fail-safe feature;c In/2 alarm;c modular case, eight 9 mm modules wide;c horizontal or vertical flush or surfacemounting on a symmetrical rail;c automatic or remote reset.
application examples
model codes
E281
76
protection against fire hazardse.g.: In = 300 mA 90 ms time delay
E281
77
protection of property (motors, etc.)e.g.: In = 3 A 250 ms time delay
E281
75
protection of persons*e.g.: In = 30 mA instantaneous
RH328AP
*depending on the opening time of the circuit breaker orassociated contactor.
E304
66
Merlin Gerin6
7earth fault relayswith separate toroids
Vigirex
2/ functions andcharacteristics
page
relay selection 6RH type E relays 8RH type A/AP relays 10toroids 12
8 Merlin Gerin
Vigirex: functions and characteristicsrelay selection
type E relays
E187
10
MERLIN GERINvigirexRH240E
test reset
1 2 3 4 5 6 7
8 9 10 11 12 13 14
MERLIN GERINvigirexRH240E
test reset
1 2 3 4 5 6 7
8 9 10 11 12 13 14
MERLIN GERINvigirexRH248E
test reset
1 2 3 4 5 6 7
8 9 10 11 12 13 14
E187
12
E187
20
E187
11
MERLIN GERINvigirexRH328A
test
reset
on
1 2 3 4 5 6
7 8 9 10 11 12 13 14
MERLIN GERINvigirexRH320A
test
reset
on
1 2 3 4 5 6
7 8 9 10 11 12 13 14
E187
16
E187
21E1
8721
E187
17
E187
21
E187
18
MERLIN GERINvigirexRH10A
test
reset
on
1 2 3 4 5 6
7 8 9 10 11 12 13 14
E187
20E1
8720
protection installation residual time delay relay associatedoperating toroidscurrent
protection against LV 0.03 or 0 s RH10E type Edirect and indirect 0.3 Acontact+ fire
protection against LV 0.03 to 0 s RH240E type Edirect and indirect 25 Acontact+ fire
protection against LV 0.03 to 0 to 1 s RH248E type Edirect and indirect 25 Acontact+ fire+ motor
type A relaysprotection installation residual time delay relay associated
operating toroidscurrent
protection against LV 0.03 or 0 s RH10A type A, OAdirect and indirect 0.3 Acontact+ fire
protection against LV 0.03 to 0 s RH320A type A, OAdirect and indirect 250 Acontact+ fire+ earthconductor
protection against LV 0.03 to 0 to 1 s RH328A type A, OAdirect and indirect 250 Acontact+ fire+ motor+ earthconductor
9Merlin Gerin
type AP relays
MERLIN GERINvigirexRH320AP
test
reset
on
1 2 3 4 5 6
7 8 9 10 11 12 13 14
E187
14
MERLIN GERINvigirexRH320AP
test
reset
on
1 2 3 4 5 6
7 8 9 10 11 12 13 14
E187
14
E187
21E1
8721
E187
21
MERLIN GERINvigirexRH10AP
test
reset
on
1 2 3 4 5 6
7 8 9 10 11 12 13 14
E187
13
protection installation residual time delay relay associatedoperating toroidscurrent
protection against LV 0.3 or 0 s RH10AP type A, OAindirect contact 1 A+ fire +
In/2 alarm
protection against LV 0.03 to 0 s RH320AP type A, OAdirect and indirect 250 Acontact ++ fire In/2 alarm+ earthconductor
protection against LV 0.03 to 0 to 1 s RH320AP type A, OAdirect and indirect 250 Acontact ++ fire In/2 alarm+ motor+ earthconductor
Merlin Gerin10
Vigirex: functions and characteristicsRH type E relays
operationUsed in conjunction with a standardMerlin Gerin toroid (type E), this type ofrelay trips the associated switching devicewhen it detects a residual current above theset residual operating current (In).Depending on the model, tripping is eitherinstantaneous or delayed (RH248E).Characteristicsc red LED indicates the trip threshold hasbeen exceeded;c failure of the detection circuit (connectingcable and toroid) trips the circuit breaker.Advantages of the RH248Ec protection can be adapted to anyinstallation;c vertical discrimination possible over anumber of levels.
installationc live part in a disconnectable, insulatingmoulded case, eight 9 mm modules wide,with sealable transparent cover;c horizontal or vertical mounting on asymmetrical rail;c connection by tunnel terminals for 2.5mm2 wire sizes.
(1) Type T2 tropicalisation:c damp heat: 55 C, 95 % relative humidity,28 cycles (as per IEC 68-2-30) ;c salt spray: 5 % NaCl, 48 hours3 months' storage (as per IEC 68-2-11).(2) Maximum lengths: see table, page 16.
Vigirex relaystype of installation to be monitoredelectrical characteristicsIn residual operating number of settingscurrent
selector
time delay (ms)device tests local
automaticresetlocal indicationoutput contact number
contact typerating 220/240 V AC p.f. = 0.7
220 V DC L/R = 0 s120 V DC L/R = 0 s48 V DC L/R = 0 s24 V DC L/R = 0 s
max. consumption 48-240 V AC and 48-300 V DC380-480 V AC
auxiliary power supply ACoperating range DCmechanical characteristicsweight (kg)thermoplastic case disconnectable mountingdegree of protection front panel
case
other characteristicstemperature range operating(as per IEC 755) storageenvironmental conditions tropicalisationtoroidstoroids to be usedtoroid-relay connection
11Merlin Gerin
multipliercoefficient
RH10E RH240E RH248E LV AC - 50/60/400 Hz - type TT IT TNS
1: 30 mA (with toroids TE30 and PE50 only) 24: 30 mA to 25 A, set by 2 selectorsor 300 mA (30 mA to 250 mA: with toroids TE30 and PE50 only, 300 mA to 25 A: all toroids diameters)0 selector 1 : 30, 50, 75, 100, 125, 150, 200, 250
selector 2 : x 1: 30 to 250 mA (with toroids TE30 and PE50) x 10: 300 mA to 2.5 A x 100: 3 A to 25 A
0 0 0, 50, 90, 140, 250, 350, 500, 1000electronic + indicator light + contactdetection circuitlocal, and remote by disconnection of the auxiliary supplyinsulation fault or detection circuit failure by latched indicator light1 1 1changeover, latched5 A 5 A 5 A0.45 A 0.45 A 0.45 A0.65 A 0.65 A 0.65 A2.5 A 2.5 A 2.5 A10 A 10 A 10 A4 VA 4 VA 4 VA5 VA/3 W 5 VA/3 W 5 VA/3 W 15 % / + 10 % 15 % / + 10 % 15 % / + 10 % 20 % 20 % 20 %
0.3 kg 0.3 kg 0.3 kghorizontal and vertical horizontal and vertical horizontal and verticalIP 30 IP 30 IP 30IP 20 IP 20 IP 20
5 C to + 55 C 5 C to + 55 C 5 C to + 55 C 40 C to + 70 C 40 C to + 70 C 40 C to + 70 Ctype T2 (1) type T2 (1) type T2 (1)
type E type E type Eby shielded wire(2) by shielded wire(2) by shielded wire(2)
0420
52
0420
53
0420
54
Merlin Gerin12
Vigirex: functions and characteristicsRH type A/AP relays
operationUsed in conjunction with a standardMerlin Gerin toroid (type A or OA), this typeof relay trips the associated switchingdevice, after the selected time delay, when itdetects a residual current above the setresidual operating current (In). The APversion also issues an alarm when theresidual current exceeds half the residualoperating current (i.e. In/2).Characteristicsc green LED indicates presence of auxiliarypower;c red LED indicates the trip threshold hasbeen exceeded;c orange LED indicates the alarm thresholdhas been exceeded (AP);c failure of the detection circuit (connectingcable and toroid) trips the circuit breaker.Advantagesc protection can be adapted to anyinstallation;c vertical discrimination possible over anumber of levels;c an alarm threshold provides a warning ofa non-critical degradation of the insulation,leaving time to carry out preventivemaintenance;c auxiliary power alarm via fail-safe contact.
installationc live part in a disconnectable, insulatingmoulded case, eight 9 mm modules wide,with sealable transparent cover;c horizontal or vertical flush or surfacemounting on a symmetrical rail;c connection by tunnel terminals for wiresizes:v 1.5 mm2 for terminals 1 to 6;v 2.5 mm2 for terminals 7 to 14.
(1) Type T2 tropicalisation:c damp heat: 55 C, 95 % relative humidity,28 cycles (as per IEC 68-2-30) ;c salt spray: 5 % NaCl, 48 hours3 months' storage (as per IEC 68-2-11).(2) Maximum lengths: see table, page 16.
Vigirex relaystype of installation to be monitoredelectrical characteristicsIn residual operating number of settingscurrent selector
time delay (ms)alarm (warning) threshold
time delaydevice tests local
automaticresetlocal indication insulation fault or detection circuit failure indicator light
alarm
output contacts fault numbercontacts
contact type changeover
alarm numbercontact contact type changeoverrating 380/415 V AC p.f. = 0.7
220/240 V AC p.f. = 0.7220 V DC L/R = 0 s120 V DC L/R = 0 s48 V DC L/R = 0 s24 V DC L/R = 0 s
max. consumption 48 to 240 V CA and 48 to 300 V DC380 to 480 V CA
auxiliary power supply ACoperating range DCmechanical characteristicsweight (kg)thermoplastic case disconnectable mountingdegree of protection front panel
case
other characteristicstemperature range operating(as per IEC 755) storageenvironmental conditions tropicalisationtoroidstoroids to be usedtoroid-relay connection
13Merlin Gerin
0443
22
0425
83
multipliercoefficient
RH10A RH10AP RH320A RH320AP RH328A RH328APfrequency - 50/60/400 Hz - type TT, IT, TNS
1 : 30 mA or 300 mA 300 mA or 1 A 32 : 30 mA to 250 A, set by 2 selectors- - selector 1 : 30, 50, 75, 100, 125, 150, 200, 250 mA
selector 2 : x 1 : 30 to 250 mA x 10 : 300 mA to 2.5 A
x 100 : 3 A to 25 A x 1000 : 30 A to 250 A
0 0 0, 50, 90, 140, 250, 350, 500, 1000.- auto. set to half the - auto. set to half the - auto. set to half the
residual op. current residual op. current residual op. current- 200 ms - 200 ms - 200 mselectronic + indicator light + contactdetection circuitlocal, and remote by disconnecting the auxiliary power supplyby indicator light by indicator light by indicator light by indicator lightwith latching with latching with latching with latching- by indicator light - by indicator light - by indicator light
without latching without latching without latching2 : 1 standard + 1 standard 2 : 1 standard + 1 standard 2 : 1 standard + 1 standard1 fail-safe 1 fail-safe 1 fail-safelatched latched latched or
non-latched0 1 fail-safe 0 1 fail-safe 0 1 fail-safe- non-latched - non-latched - non-latched3 A 3 A 3 A5 A 5 A 5 A0.45 A 0.45 A 0.45 A0.65 A 0.65 A 0.65 A2.5 A 2.5 A 2.5 A10 A 10 A 10 A4 VA - 4 VA - 4 VA -5 VA/3 W 5 VA/3 W 5 VA/3 W 15 %/+ 10 % 15 %/+ 10 % 15 %/+ 10 % 20 % - 20 % - 20 % -
0.4 kg 0.4 kg 0.4 kghorizontal and vertical horizontal and vertical horizontal and verticalIP 30 IP 30 IP 30IP 20 IP 20 IP 20
5 C to + 55 C 5 C to + 55 C 5 C to + 55 C 40 C to + 70 C 40 C to + 70 C 40 C to + 70 Ctype T2(1) type T2(1) type T2(1)
type A, OA type A, OA type A, OAby shielded wire(2) or toroid plugged into relay for TA30 and PA50
0443
20
0425
85
0443
21
0425
87
Merlin Gerin14
electrical characteristicstransformation 1/1000 1/1000 1/1000ratiomaximum permissible c c ccurrent:1 kA continuous -2.5 kA/1 s - 30 kA/0.05 smechanical characteristicsweights (kg) 30 0.120 0.120
50 0.200 0.200 80 0.420 0.510 120 0.590 0.690 200 1.320 1.570 300 2.230 46 1.300 110 3.200
other characteristicstemperature range storage 40 C to + 70C 40 C to + 70C 40 C to + 70C operating 5 C to + 55 C 5 C to + 55 C 5 C to + 55 Cdegree of protection IP 20 IP 20 IP 20
Vigirex: functions and characteristicstoroids
closed toroids, split toroids, closed toroids,type A type OA type Efor: for: for:Vigirex RH10A, RH10AP, H320A, Vigirex RH10A, RH10AP, H320A, Vigirex RH10E, RH240E, RH248ERH320AP, RH328A, RH328AP RH320AP, RH328A, RH328AP
utilisationc closed toroids for new installations c split toroids for renovations c closed toroids for new installationsand extensions. and extensions. and extensions.
functionsc detect the leakage current and c detect the leakage current and c detect the leakage current andtransmit a proportional signal to transmit a proportional signal to transmit a proportional signal tothe associated relay. the associated relay. the associated relay.
installationc enclosed in an insulated c enclosed in an insulated c enclosed in an insulatedcasing; casing; casing;c mounting, 3 possibilities: c mounted on plate or cable. c mounted on plate or cable.v 30-50 for clipping ontoVigirex relay,v 30-50-80 on a symmetrical rail;v any diameter on plate and cables;c connection:v 30-50 plugged directly intoVigirex relay,v 30 to 200 by connectors for0.22 mm2 wires min.;v 300 by 6.35 mm tab connectors.
dimensionstype A (mm) type OA (mm) type E (mm)TA 30 POA 46 TE30 30 (all settings)PA 50 GOA 110 PE50 50 (all settings)IA 80 IE80 80 (settings u 300 mA)MA 120 ME120 120 (settings u 300 mA)SA 200 SE200 200 (settings u 300 mA)GA 300
0425
89
0425
96
0513
52
15
earth fault relayswith separate toroids
Vigirex
3/ installationand connection
page
relays 14toroids 15auxiliaries 16
Merlin Gerin16
Vigirex: installation and connectionrelays
RH10E-RH240E-RH248E
MERLIN GERINvigirexRH240E
test reset
1 2 3 4 5 6 7
8 9 10 11 12 13 14
8 9
1 2 3 6 7
ut
aa
1 2
t
NL1L2L3
Key:aa: auxiliary power supplyt : type A, AO, or E toroid depending onrelayut:RH10E, RH240E, RH248Eut: used for control of a switching deviceRH10A, RH320A, RH328Aut1, ut2: remote indication or controlof a switching deviceut1: standard changeover contactut2: fail-safe contactRH10AP, RH320AP, RH328APut1: standard changeover contact forcontrol of a switching deviceut2: fail-safe alarm contact
MERLIN GERINvigirexRH328A
test
reset
on
1 2 3 4 5 6
7 8 9 10 11 12 13 14
RH10A/AP-RH320A/AP-RH328A/AP
7 8
5
ut1aa
1
t
NL1L2L3
62
9 10 11 12 13 14
ut2
RH10E-RH240E-RH248E RH10A/AP-RH320A/AP-RH328A/APMounted on symmetrical rail IP 20 Flush mounting IP 30 Surface mounting IP 20
72
8145
446065,5
73
46
6573,5
E187
10
E187
10E1
8718
E262
92
E262
90
E262
91
E184
59E1
8460
73,537,5
45
7257
66
2 4,2 4
81
10,5
17Merlin Gerin
toroidstype A types A and E type Ediam. 30 and 50 diam. 80 to 200 diam. 30 and 50
B
LDC
KF G
E
12
3
H
J
5
F
B
8
C
D
E
5
16
4
2921
2 4,5
type B C D E FTA30 30 31 60 53 82 50PA50 52 45 87 66 108 60
H G
E
B
D
12F
J
K
L
C
5
type A type OAdiam. 300 diam. 46 and 110
HL
L
HB
5
type H L B CPOA 46 68 148 57 38GOA 110 68 224 76 44
type H LGA300 299 29 344
type B C D E F G H J K LTE30 27 60 22 18 75 45 25 18 4 34 28PE50 50 86 22 18 101 61 41 33 5 50 28
Vigirex
immunity to lineovercurrentsLine overcurrents due to motor starting ortransformer switching may causeunnecessary tripping of residual currenttype relays.This can be avoided by a few very simpleprecautions with cumulative effects:c place the toroid on a straight section ofcable;c centre the cable in the toroid;c use a toroid with a much larger diameterthan the cable going through it2 x dia (fig.1).For very severe operating conditions, theuse of a mild steel sleeve placed around thecable inside the toroid considerablyincreases immunity.Recommended characteristics:c mild steel foil 0.1 mm thick to be wrappedseveral times around the cable inside thetoroid (minimum thickness 1 mm);c inner diameter of the toroid > 1.4 x outerdiameter of the cable bundle (fig. 2).
A, OA, E toroidsassociated with the Vigirex
type B C D E F G H J K LIA80, IE80 80 122 26.5 35 150 80 55 40 126 65 44MA120, ME120 120 164 26.5 35 190 80 55 40 166 65 44SA200, SE200 196 256 29 37 274 120 90 60 255 104 46
Toroid locationc on all the cables (phases and neutral) of afeeder downstream of the switching deviceassociated with the Vigirex;c for a TT system, if a toroid cannot beinstalled on a transformer output (busbars orcables in parallel): place a toroid on thetransformer neutral-earth path.
toroid A, OA E E mm 30 to 300 30 and 50 80 to 200relaysRH10E c vRH240E c vRH248E c vRH10A cRH320A cRH328A cRH10AP cRH320AP cRH328AP c
E242
91
E186
64
E187
22
E121
10
E242
93
E242
94
Vigirex: installation and connectiontoroids
figure 2figure 1
Keyv these toroids can only be used with relayshaving In residual operating currentsgreater than 300 mA;c no residual operating current restrictions.
N 12 3 PE
E138
56 A
E138
56B
N 12 3 PE
18 Merlin Gerin
Vigirex: installation and connectionauxiliaries
resistance must not exceed 3 ohms;c shielded wires: available with 1 or 2conductors in reels of 20 or 100 m;c cable size 0.22 mm2.
examples of type A mountingOn Vigirex, diam. 30 or 50 On rail, diam. 30 to 80 On plate, type A or E, diam. 30 to 200
0425
90
0425
92
0443
24
On cable, diam. 120 to 300
0443
23
0425
93
0425
91
toroid-relay connection circuitwire size (mm2) max. length (m)0,22 180,75 601 801,5 1252,5 200c the maximum toroid-relays connection
19
earth fault relayswith separate toroids
Vigirex
4/ complementarytechnical information
page
implementation of residualcurrent devices 18electrical systems 20useful definitions 21
improvement of operating conditions - implementation ofdiscrimination between residual current devices
20 Merlin Gerin
Vigirex: complementary technical informationimplementationof residual current devices (RCDs)
The use of residual current devices isdescribed below according to the type ofelectrical system (TT, TN or IT).Protection of sensitive locations against firehazards must also be considered.For such locations, a residual current devicewith a residual operating current i 300 mAshould be provided at the head of the feederconcerned.
introduction
TT systems exposed conductive parts interconnected and connectedto the same earthing electrode1. Condition satisfiedA single device at the head of the installationis sufficient to ensure protection againstelectric shock.Its residual operating current is selectedaccording to the resistance of the earthingsystem.
2. Condition not satisfiedThis is the case in particular in installationswhere the loads are far apart.It is essential to have:c one RCD per group of interconnectedexposed conductive parts;c one RCD at the head of the installation,unless the head circuit breaker and the maincircuit breakers are in the sameswitchboard or in switchboards located nextto one another (or linked by a class IIconnection).
Horizontal discriminationThis technique consists of transferring theresidual current protection from the head ofthe installation to the downstream feeders:in this case, power is cut only on the faultyfeeder. It is not possible unless the headcircuit breaker and the main circuit breakersare in the same switchboard or inswitchboards located next to one another (orlinked by a class II connection).
Vertical discriminationDownstream of the head circuit breaker, themain circuit breakers are provided withRCDs. In this case, power is cut only on thefaulty feeder, subject to compliance with thefollowing rules:InA > 2 x InB,T no A > T brk B,InA and InB are the residual operatingcurrents of RCDs A and B,T no A = non operating time of A,T brk B = total break time of B (including thetime due to the switching device).
E269
64E2
6963
E269
62E2
6961 HV/LV
RB RA
RCD
HV/LV
RCD
RB RA2
RCD
RA1
RCD
HV/LV
RB RA
RCDRCD
RCD
ARCD
B
earthingpath
HV/LV
RB RA
CIM
RCD
Merlin Gerin 21Merlin Gerin 21
exposed conductive parts interconnected and connectedto the same earthing electrode, itself connected to thesubstation earthing system
IT systems
1. Condition not satisfiedc substation earthing system not connectedto exposed conductive parts: place an RCDat the head of the installation;c exposed conductive parts notinterconnected:place an RCD on each group of exposedconductive parts. To be supplemented by anRCD at the head of the installation unlessthe head circuit breaker and the main circuitbreakers are in the same switchboard or inswitchboards located next to one another (orlinked by a class II connection).
Note: CIM is insulation monitoring device.
2. Condition satisfiedProtection against electric shock in the eventof a double fault is provided by theovercurrent protection.Residual current devices must be used inthe following cases:c feeder with excessive cable length;c circuit supplying portable equipment (suchas socket outlet circuits);c circuit where there is a risk of theprotective conductor breaking.
Safety against electric shock is ensured bythe overcurrent protection. Residual currentdevices must be used in the following cases:c feeder with excessive cable length;c circuit supplying portable equipment (suchas socket outlet circuits);c circuit where there is a risk of theprotective conductor breaking.
TN systems
E269
65E2
6966
E269
67
L1L2L3N
HV/LV
PE
RCD
TNC system TNS system
RB
PE
HV/LV
RCD
RB RA 2
RCD
RA 1
CIM
RCD
22 Merlin Gerin
Vigirex: complementary technical informationelectrical systems
consequences of aninsulation fault
ReminderAn insulation fault occurs when a liveconductor - phase or neutral - comes incontact with an exposed conductive part(e.g. motor casing).
ConsequencesThe consequences depend upon the type ofelectrical system (TT, IT or TN) used in theinstallation or part of installation concerned.Such faults create hazards to life and property.
TT systems An insulation fault between phase and earthcauses a current flow which is limited inpractice only by the earthing resistances Rnand RA. Hazardous voltages exist on theexposed conductive parts. The fault currentis a few amperes.Tripping is essential.In the example opposite, with the followingvalues for RA and Rn.RA = 20 ; Rn = 10 .The fault current is 7.3 (220 V/30 ohms) andthe voltage Ud on the exposed conductiveparts is 147 V.
The fault current depends on the insulationimpedance (Zct) of the installation in normaloperation.As this impedance is high by its nature, thefault current is relatively low. The same istrue for the voltage on the exposedconductive parts.Tripping is unnecessary.The fault must be reported, located andeliminated.In this example, with Zct = 3500 ohms(case of a 1 km installation).The fault current is 62 mA (220 V/3500 ohms).The touch voltage Uc between the twosimultaneously accessible exposedconductive parts depends on the resistanceRAB of link AB.In an extreme case where RAB = 2 ohms,Uc = 2 x 0.062 = 0.124 V.
IT systems
TN systems
E269
71E2
6969
E269
68
If a second fault occurs before the first faulthas been cleared, it rapidly becomes a shortcircuit between phases (or between phaseand neutral), with the followingconsequences:c the exposed conductive parts carry a highvoltage;c the fault current is equal to the short-circuitcurrent.Tripping is essential.The initial voltage on the busbar supplyingthe two feeders must be estimated at80 percent of the nominal voltage betweenphases.As the loop impedance is 99 milliohms(neglecting the reactances), the fault currentis equal to 3070 A (380 x 0.8/0.099).The touch voltage Uc is equal to half theinitial voltage, i.e.: 0.8 x 380/2 = 152 V.
An insulation fault results in a short-circuitbetween phase and neutral.The resulting current flow is high. Theexposed conductive parts are at ahazardous voltage.Tripping is essential.The initial voltage on the faulty feeder mustbe estimated at 80 percent of the nominalvoltage between phase and neutral. Thetouch voltage Uc is equal to half 0.8 x 220 V,i.e. 88 V.
E269
70
L1L2L3N
HV/380V
UdRn : 10W RA : 20W
L1L2L3PE
HV/380V
Rn
A
Zct
Uc
B
Id
L1L2L3PE
HV/380V
Rn
Zct
Uc
50 m50 mm2
Ra
30 m25 mm2
Id
L1L2L3PEN
HV/380V
RnA Uc
Merlin Gerin 23
Vigirex: complementary technical informationuseful definitions
The definitions below are intended forpractical purposes only and do not claim tobe exhaustive or theoretical.
Protective conductor PEConductor used for protection againstindirect contact and for interconnectingexposed conductive parts:c to one another;c to extraneous conductive parts;c to earthing electrodes or earthed parts.The presence of switchgear on suchconductors is prohibited.Residual currentRoot-mean-square vector sum of thecurrents flowing through all the liveconductors. It is equal to zero in theabsence of an insulation fault. In case of aninsulation fault, the residual current is theleakage current returned to thesource through the earth and the protectiveconductor.For the value of In, see residual operatingcurrent.Residual current device (RCD)A device that opens the associatedswitchgear when it detects a residual currentabove its residual operating current In (seeresidual current).Residual operating current (In)Value of the residual current which causes aresidual current device to operate.Service voltagePreferred term: rated operating voltage.The rated operating voltage Ue of a systemis the voltage which, together with the ratedcurrent of the system, determines the load.For three-phase systems, it is the voltagebetween phases.Shock protection deviceThis device must automatically separatefrom the source any part of theinstallation on which there is a faulthazardous to life.Depending on the system earthing arrange-ment of the installation, this device is eithera residual current device (characterised byIn, its residual operating current, and itstotal break time) or an overcurrent device(fuse or circuit breaker).break timeTotal time from fault detection to completearc extinction.Time delayIntentional delay before operation of adevice.The time delay on operation of an upstreamcircuit breaker allows time discriminationwith the downstream circuit breaker.The time delay, which is voluntary, shouldnot be confused with the break time of adevice which is intrinsic to the device.
Touch voltageVoltage in case of an insulation faultacross simultaneously accessible parts.Uc = f(t) safety curveUc = f(t) is the maximum voltage that thehuman body can withstand for a givenperiod of time, depending on externalconditions (nature of the premises, presenceof water, etc. - see NF C 15-100,Sec. 481.1.1, table 48A).
Direct contactContact of persons with the normally liveparts of electrical equipment.DiscriminationCoordination of the automatic switchingdevices such that only the faulty part of theinstallation is cut off by opening of the devicelocated immediately upstream of the fault.Double insulationinsulation including both:c basic insulation required for protectionagainst direct contact, andc supplementary insulation required forprotection against indirect contact in caseof a fault of the basic insulation.Exposed conductive partAny accessible metal part of an electricalequipment item other than the live parts andwhich can accidentally become live.Fault (electrical)Accidental connection between two points atdifferent potentials, such as aninsulation fault. A fault may be solid or mayexhibit a certain impedance. A solid faultbetween live conductors is a short circuit.A distinction is made between phase-exposed conductive parts, phase-earth,phase-phase, phase-neutral, neutral-exposed conductive parts and neutral-earthfaults.Fault voltageVoltage, in case of an insulation fault,across an exposed conductive part and anearthing reference, i.e. a point on which thevoltage is not modified when the exposedconductive part becomes live.Indirect contactContact of persons with exposed conductiveparts accidentally live due to an insulationfault.Insulation voltagePreferred term: rated insulation voltage. Therated insulation voltage of an assembly isthe voltage characterising it and used asreference for the dielectric tests, the isolatingdistances and the creepage distance.Live conductorConductor used for transmission of electricalpower during normal operation (including theneutral conductor).PEN conductorIn a TNC system, acts both as neutralconductor and as protective conductor(size u 10 mm2).The presence of switchgear on suchconductors is prohibited.
Merlin Gerin24
25
earth fault relayswith separate toroids
Vigirex
5/ catalogue numberspage
earth fault relaysaccessories and toroids
Merlin Gerin24
protection against direct and indirect contact + firenetwork BT 50/60 Hzsensitivity 0.03 or 0.3 Atime delay 0 ssingle phase auxiliary power supply (V) in = 30 mA in = 300 mA48 V AC 50/60 Hz48 to 120 V DC110 to 130 V AC 50/60 Hz220 to 240 V AC 50/60 Hz380 to 415 V AC 50/60 Hz
protection against direct and indirect contact + firenetwork BT 50/60 Hzsensitivity 0.03 to 25 Atime delay 0 ssingle phase auxiliary power supply (V)48 V AC 50/60 Hz48 to 120 V DC110 to 130 V AC 50/60 Hz220 to 240 V AC 50/60 Hz380 to 415 V AC 50/60 Hz
protection against direct and indirect contact + fire + motornetwork BT 50/60 Hzsensitivity 0.03 to 25 Atime delay 0 to 1 ssingle phase auxiliary power supply (V)48 V AC 50/60 Hz48 to 120 V DC110 to 130 V AC 50/60 Hz220 to 240 V AC 50/60 Hz380 to 415 V AC 50/60 Hz
protection against direct and indirect contact + firenetwork BT 50/60/400 Hzsensitivity 0.03 to 0.3 Atime delay 0 ssingle phase auxiliary power supply (V) in = 30 mA in = 300 mA48 V AC 50/60 Hz48 to 120 V DC110 to 130 V AC 50/60 Hz220 to 240 V AC 50/60 Hz380 to 415 V AC 50/60 Hz440 to 480 V AC 50/60 Hz
protection against direct and indirect contact + fire + earth conductornetwork BT 50/60/400 Hzsensitivity 0.03 to 250 Atime delay 0 ssingle phase auxiliary power supply (V)48 V AC 50/60 Hz48 to 120 V DC110 to 130 V AC 50/60 Hz220 to 240 V AC 50/60 Hz380 to 415 V AC 50/60 Hz440 to 480 V AC 50/60 Hz
Vigirex: price listearth leakage relays with separate toroids
earth leakage relay RH10E
MERLIN GERINvigirexRH10E
50622
1414131312121111101099
test
11 22 33 44 55 66 77
88
reset
300mA
inst.
MERLIN GERINvigirexRH240E
50632
1414131312121111101099
test
11 22 33 44 55 66 77
88
reset
30
50
75
100 125
150
200
250x1
x10 x100
mA
MERLIN GERINvigirexRH248E
50632
1414131312121111101099
test
11 22 33 44 55 66 77
88
reset
inst.
50
90
140 250
350
500
1000
mS30
50
75
100 125
150
200
250x1
x10 x100
mA
test
reset
7 8 9 10 11 12 13 147 8 9 10 11 12 13 14
11 2 3 4 5 62 3 4 5 6
on
MERLIN GERINvigirexRH10A
50637
test
reset
7 8 9 10 11 12 13 147 8 9 10 11 12 13 14
11 2 3 4 5 62 3 4 5 6
on
MERLIN GERINvigirexRH320A
50646
A0,1
0,030,2
0,125
0,250,05
0,075 0,15
x1
x0,1
x10
x100
earth leakage relay RH248E
earth leakage relay RH10A
earth leakage relay RH320A
earth leakage relay RH240E
50453
504525045450623
50456
504555045750628
50459
504585046050633
50736
50735507375064150642
50739
50738507405064750648
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
50450
504495045150621
50733
50732507345063850639
.
.
.
.
.
.
.
.
.
Merlin Gerin 25
protection against direct and indirect contact + fire + earth conductor + motornetwork BT 50/60/400 Hzsensitivity 0.03 to 250 Atime delay 0 to 1 ssingle phase auxiliary power supply (V) standard standard
latched relay unlatched relay+ fail safe + fail safelatched relay unlatched relay
12 V DC24 V DC48 V AC 50/60 Hz48 to 120 V DC110 to 130 V AC 50/60 Hz220 to 240 V AC 50/60 Hz380 to 415 V AC 50/60 Hz440 to 480 V AC 50/60 Hz500 to 525 V AC 50/60 Hz
protection against indirect contact + firenetwork BT 50/60/400 Hzsensitivity 0.3 or 1 A + warningtime delay 0 ssingle phase auxiliary power supply (V) in = 300 mA in = 1 A220 to 240 V AC 50/60 Hz380 to 415 V AC 50/60 Hz440 to 480 V AC 50/60 Hz
protection against direct and indirect contact + fire + earth conductornetwork BT 50/60/400 Hzsensitivity 0.03 to 250 A + warningtime delay 0 ssingle phase auxiliary power supply (V)220 to 240 V AC 50/60 Hz380 to 415 V AC 50/60 Hz440 to 480 V AC 50/60 Hz500 to 525 V AC 50/60 Hz
protection against direct and indirect contact + fire + earth conductor + motornetwork BT 50/60/400 Hzsensitivity 0.03 to 250 A + warningtime delay 0 to 1 ssingle phase auxiliary power supply (V) latched unlatched
relay relay220 to 240 V AC 50/60 Hz380 to 415 V AC 50/60 Hz440 to 480 V AC 50/60 Hz500 to 525 V AC 50/60 Hz
protection against direct contact (30 mA)specific for command motor by Telemecanique ATV66 variable speed controllersingle phase auxiliary power supply (V)220 to 240 V AC 50/60 Hz
unit price (excl. VAT) in French francs
earth leakage relay RH328A
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
test
reset
7 8 9 10 11 12 13 147 8 9 10 11 12 13 14
11 2 3 4 5 62 3 4 5 6
on
140
inst.500
250
1s50
90 350
mS
MERLIN GERINvigirexRH328A
50652
A0,1
0,030,2
0,125
0,250,05
0,075 0,15
x1
x0,1
x10
x100
test
reset
7 8 9 10 11 12 13 147 8 9 10 11 12 13 14
11 2 3 4 5 62 3 4 5 6
on
MERLIN GERINvigirexRH10AP
50652
earth leakage relay RH10AP
test
reset
7 8 9 10 11 12 13 147 8 9 10 11 12 13 14
11 2 3 4 5 62 3 4 5 6
on
MERLIN GERINvigirexRH320AP
50652
A0,1
0,030,2
0,125
0,250,05
0,075 0,15
x1
x0,1
x10
x100
earth leakage relay RH320AP
test
reset
7 8 9 10 11 12 13 147 8 9 10 11 12 13 14
11 2 3 4 5 62 3 4 5 6
on
140
inst.500
250
1s50
90 350
mS
MERLIN GERINvigirexRH328AP
50652
A0,1
0,030,2
0,125
0,250,05
0,075 0,15
x1
x0,1
x10
x100
earth leakage relay RH328AP
50746
5074550747506575065850659
506665066750668
50672506735067450675
50683506845068550686
50055
earth leakage relay RH328AF
test
reset
7 8 9 10 11 12 13 147 8 9 10 11 12 13 14
11 2 3 4 5 62 3 4 5 6
on
140
inst.500
250
1s50
90 350
mS
MERLIN GERINvigirexRH328A
50652
A0,1
0,030,2
0,125
0,250,05
0,075 0,15
x1
x0,1
x10
x100
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
506615066250743
5074250744506535065450655
506635066450665
50679506805068150682
Merlin Gerin26
Vigirex: price listearth leakage relays with separate toroids
accessories and toroidsunit price (excl. VAT) in french francs
toroid-relay link
toroids for RH10A/AP -RH320A/AP - RH328A/AP
toroids for RH10E -RH240E - RH248E
5013750136
504375043850439504405044150442
5048550486
5043050431504325043350434
screened cable (cable size 0.22 mm2)1 conductor 2 conductors
roll of 20 mroll of 100 m
closed toroid, type Atype (mm)TA 30PA 50IA 80MA 120SA 200GA 300
opening toroid, type OAtype (mm)POA 46GOA 110
closed toroid, type Etype (mm)TE30 30PE50 50IE80 80ME120 120SE200 200
5015750158
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
As standards, specifications and designs change from time to time, please ask for confirmationof the information given iin this publication
ce document a t imprim sur du papier cologique.
BTP207E 09-99
This document has been printed on ecological paper
Schneider Electric Industries SA5, rue Nadar92506 Rueil-Malmaison Cedex FranceTel : +33 (0)1 41 29 82 00Fax : +33 (0)1 47 51 80 20http://www.schneiderelectric.com
Design: Schneider Electric - AMEGPhoto: Schneider ElectricPrinted:
0000
0000
0
1999
Sch
neide
r Elec
tric -
All r
ight r
eser
ved