ABB REG670 Applications Manual page 547

Relion 670 series generator protection

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1MRK 502 071-UEN -

Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062

Application manual

If the busbar is divided by bus-section circuit breakers, the signals from the bus-

section coupler bay (A1A2_BS) rather than the bus-section disconnector bay

(A1A2_DC) must be used. For B1B2_BS, 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.

QB1 is open.

QB2 is open.

The switch status of QB1 is valid.

The switch status of QB2 is valid.

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

above information.

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

QB1OPTR (bay 1/sect.A1)

QB1OPTR (bay n/sect.A1)

DCOPTR (A1/A2)

VPQB1TR (bay 1/sect.A1)

VPQB1TR (bay n/sect.A1)

VPDCTR (A1/A2)

EXDU_BB (bay 1/sect.A1)

EXDU_BB (bay n/sect.A1)

EXDU_DC (A1/A2)

IEC04000506 V1 EN

Signals from any bays in section A1 to a busbar earthing switch in the

same section

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

en04000506.vsd

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