Single Circuit Breaker With Single Busbar - ABB RELION 670 SERIES Applications Manual

Line distance protection

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1MRK 506 369-UUS -

Line distance protection REL670 2.2 ANSI

Application manual

Single circuit breaker with single busbar

lineVoltage/1/2/3

ANSI10000093 V1 EN

Connection of SESRSYN (25) function block in a single busbar

illustrates connection principles for a single busbar. For the SESRSYN (25)

function there is one voltage transformer on each side of the circuit breaker. The voltage

transformer circuit connections are straightforward; no special voltage selection is

The voltage from busbar VT is connected to V3PB1 and the voltage from the line VT is

connected to V3PL1. The conditions of the VT fuses shall also be connected as shown

above. The voltage selection parameter CBConfig is set to No voltage sel.

SESRSYN (25)

ANSI0000093-1-en.vsd