Operation Principle - ABB Relion 650 Series Technical Manual

Section 9
Logic
9.1.6
274

Operation principle

The duration of the trip output signal is settable (tTripMin). The pulse length
should be long enough to secure the opening of the circuit breaker.
There is a single input (TRIN) through which all trip output signals from the
protection functions within the IED or from external protection functions via one or
more of the IEDs' binary inputs are routed. It has a single three-phase trip output
(TRIP) to connect to one or more of the IEDs' binary outputs, as well as to other
functions within the IED requiring this signal.
1MRK 511 424-UEN B
M12255-3 v12
Bay control REC650 2.2 IEC
Technical manual