A040363 V2 EN
Figure 82: Arc protection with several IEDs
Arc protection with several IEDs and a separate arc protection system
When realizing an arc protection with both IEDs and a separate arc protection system,
the cable terminations of the outgoing feeders are protected by IEDs using one lens
sensor for each IED. The busbar and the incoming feeder are protected by the sensor
loop of the separate arc protection system. With arc detection at the cable
terminations, an IED trips the circuit breaker of the outgoing feeder. However, when
detecting an arc on the busbar, the separate arc protection system 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.
1MRS756378 D Section 5
Protection functions
REF615 165
Application Manual
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