ABB UniGear Digital, Commissioning And Testing Manual

Page: 73 / 98

APPAR ATUS CO NTRO L TESTING INTERLOCKS BETWEEN PANELS
1VLG5000 17 C 61
Step 5/11
On the protection relay LHMI (tested feeder) go to-> Main Menu/Test/Function tests/
Other protection
– ARCSARC1 = Activate OPERATE
Figure 94: Activating OPERATE signal
The circuit breaker must trip and, according to inter-trip logic scheme, forward the trip com-
mand to the upstream circuit breaker (Incomer, Generator and Bus tie). The upstream circuit
breaker must trip immediately. All feeders in the relative section shall trip at the same time if
inter-trip is designed.
Then
On the protection relay LHMI (tested feeder) go to-> Main Menu/Test/Function tests/
Other protection
– ARCSARC1 = deactivate OPERATE
Figure 95: Deactivating OPERATE signal
Step 6/11
Check interlocking logic. Clear lockouts.
Step 7/11
Close all circuit breakers in the relative section.