ABB REF615 Applications Manual page 170

Section 5
Protection functions
164
A040362 V1 EN
Figure 81: Arc protection with one IED
Arc protection with several IEDs
When using several IEDs, the IED protecting the outgoing feeder trips the circuit
breaker of the outgoing feeder when detecting an arc at the cable terminations. If the
IED protecting the outgoing feeder detects an arc on the busbar or in the breaker
compartment via one of the other lens sensors, it will generate a signal to the IED
protecting the incoming feeder. When detecting the signal, the IED protecting the
incoming feeder trips the circuit breaker of the incoming feeder and generates an
external trip signal to all IEDs protecting the outgoing feeders, which in turn results
in tripping of all circuit breakers of the outgoing feeders. For maximum safety, the
IEDs can be configured to trip all the circuit breakers regardless of where the arc is
detected.
1MRS756378 D
REF615
Application Manual