ABB RELION 620 Series Technical Manual page 725

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1MAC504801-IB E

620 series ANSI

Technical Manual

The autoreclosing shot is initiated with a trip signal of the protection function. The

autoreclosing picks up when the protection trip delay time elapses.

Normally, all trip and pickup signals are used to initiate an autoreclosing shot and trip the

circuit breaker. If any of the input signals INIT_X or DEL_INIT_X are used for

blocking, the corresponding bit in the Tripping line setting must be FALSE. This is to

ensure that the circuit breaker does not trip from that signal, that is, the signal does not

activate the OPEN_CB output. The default value for the setting is "63", which means that

all initiation signals activate the OPEN_CB output. The lowest bit in the Tripping line

setting corresponds to the INIT_1 input, the highest bit to the INIT_6 line.

Shot initiation

A070869 V1 EN

Example of an autoreclosing program with a reclose scheme matrix

In the AR function, each shot can be programmed to locate anywhere in the reclose

scheme matrix. The shots are like building blocks used to design the reclose program. The

building blocks are called CBBs. All blocks are alike and have settings which give the

Control functions

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