9.3
Wiring diagrams overload protection
Table 28: Examples of wiring diagrams for overload protection
Key
Circuit diagram
Q: residual current device 3~30 mA
e.g. residual current device Merlin Guérin C60 L, trip
characteristic K
▪
Earth leakage module VIGI, instantaneous, 3~ 30
mA
▪
Auxiliary contact (change-over contact)
KM: Motor contactor 3~
e.g. Télémécanique LC1 D0910
F: Remote control
12
14
11
A1
KM
PE
L
3
L
2
L
1
KM
Q
M
M
U V W
A2
1 3 5
6
4
2
3
3
5
1
2 4 6
F
F
Q: Motor contactor
e.g. Télémécanique GV2M + GV2 AN 11
KM: Motor contactor 3~
e.g. Télémécanique LC1 D0910
RH: Earth leakage protection relay with separate
toroid
e.g. Vigirex RH 328 A Merlin Guérin + Tore
F: Remote control
H: Auxiliary supply
12 43
44
A1
14
13
RH
230/240 V
PE
L
3
L
2
L
1
KM
KM
Q
Q
M
M
RH
H
U V W
A2
1 3 5
3
3
5
1
2 4 6
2 4 6
F
F
Q: Motor contactor
e.g. Télémécanique GV2M + GV2 AN 11
KM: Motor contactor 3~
e.g. Télémécanique LC1 D0910
SM: Insulation monitor, de-energised
e.g. V12G1LOHM SM21 Merlin Guérin
F: Remote control
H: Auxiliary supply
12
43
44
A1
14
13
11
12
RH
230/240 V
PE
L
3
L
2
L
1
KM
KM
KM
Q
Q
M
M
SM
H
U V W
A2
1 3 5
3
3
5
1
2 4 6
2 4 6
F
F
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