L1
L1
L2
L2
L3
L3
N
N
ACM3.1
V
BB-L1
V
BB-L2
V
BB-L3
V
L1
V
L2
V
L3
L2
L1
L3
Controlled
equipment
V
V
5. The voltage across the breaker should be 0 V for each phase. If it is not, correct the wiring.
4.2.3 Checking breaker open and close wiring
For safety reasons, the breaker open, breaker close, and breaker feedback wiring must be checked systematically. This
should include:
• If present, check that the switchboard's breaker open and close buttons are connected correctly.
• Check that the correct breaker wires are connected to the correct controller terminals.
• Check that the correct input and output functions are assigned in the controller software.
DANGER!
Breaker wiring errors can lead to death, personal injury and/or damage to equipment. For example, errors in
breaker wiring could make the breaker close instead of open.
GPU 300 Commissioning guidelines 4189341033 UK
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