ABB Relion 670 Series Applications Manual page 353

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1MRK 505 370-UUS Rev. K

ANSI04000512 V1 EN-US

Figure 186: Busbars divided by bus-section disconnectors (circuit breakers)

The project-specific logic are the same as for the logic for the double busbar configuration described in

section "Signals in single breaker arrangement".

Interlocking for double CB bay DB (3)

The interlocking for a double busbar double circuit breaker bay including DB_BUS_A (3), DB_BUS_B (3)

and DB_LINE (3) functions are used for a line connected to a double busbar arrangement according to

ANSI04000518 V1 EN-US

Figure 187: Switchyard layout double circuit breaker

Busbar protection REB670

Application manual

All disconnectors on this part of the busbar are open.

The switch status of all disconnectors on this part of the busbar is valid.

No transmission error from any bay that contains the above information.

en04000512_ansi.vsd

en04000518_ansi.vsd

IP14167-1 v2

M13585-3 v10

Relion reb670