ABB Relion 670 Series Applications Manual page 349

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1MRK 505 370-UUS Rev. K

corresponding signals from busbar B are used. The same type of module (A1A2_BS) is used for different

busbars, that is, for both bus-section circuit breakers A1A2_BS and B1B2_BS.

For a busbar grounding switch, these conditions from the A1 busbar section are valid:

189OPTR (bay 1/sect.A1)

189OPTR (bay n/sect.A1)

DCOPTR (A1/A2)

VP189TR (bay 1/sect.A1)

VP189TR (bay n/sect.A1)

VPDCTR (A1/A2)

EXDU_BB (bay 1/sect.A1)

EXDU_BB (bay n/sect.A1)

EXDU_DC (A1/A2)

ANSI04000506 V1 EN-US

Figure 180: Signals from any bays in section A1 to a busbar grounding switch in the same section

For a busbar grounding switch, these conditions from the A2 busbar section are valid:

Busbar protection REB670

Application manual

189 is open.

289 is open.

The switch status of 189 is valid.

The switch status of 289 is valid.

No transmission error from the bay BS (bus-section coupler bay) that contains the

above information.

en04000506_ansi.vsd

Relion reb670