Appendix B -Settings and Signals
ORDINAL SIGNAL NAME ELEMENT NAME
DESCRIPTION
Block sensitive earth fault stage 1 time delayed trip
Block sensitive earth fault stage 2 time delayed trip
Block sensitive earth fault stage 3 time delayed trip
Block sensitive earth fault stage 4 time delayed trip
Block phase undervoltage stage 1 time delayed trip
Block phase undervoltage stage 2 time delayed trip
Block phase overvoltage stage 1 time delayed trip
Block phase overvoltage stage 2 time delayed trip
Block residual overvoltage stage 1 time delayed trip
Block residual overvoltage stage 2 time delayed trip
52-A (CB1 closed) CB auxiliary input (3 phase)
52-A (CB1 A phase closed) CB auxiliary
52-A (CB1 B phase closed) CB auxiliary
52-A (CB1 C phase closed) CB auxiliary
52-B CB Contact Input A Phase
52-B CB Contact Input B Phase
52-B CB Contact Input C Phase
52-A (CB2 closed) CB2 auxiliary input (3 phase)
52-A (CB2 A phase closed) CB auxiliary
52-A (CB2 B phase closed) CB2 auxiliary
52-A (CB2 C phase closed)CB2 auxiliary
52-B (CB2 open) CB2 auxiliary input (3 phase)
52-B (CB2 A phase open) CB2 auxiliary input
52-B (CB2 B phase open) CB2 auxiliary input
52-B (CB2 C phase open) CB2 auxiliary input
Circuit breaker healthy (input to auto-recloser - that the CB1 has enough energy to allow re-closing)
Circuit breaker healthy (input to auto-recloser - that the CB2 has enough energy to allow re-closing)
VT supervision input - signal from external miniature circuit breaker showing MCB tripped