ABB REG670 - Page 547

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.
Signal
QB1OPTR QB1 is open.
QB2OPTR QB2 is open.
VPQB1TR The switch status of QB1 is valid.
VPQB2TR The switch status of QB2 is valid.
EXDU_BS 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)
BB_DC_OP
VP_BB_DC
EXDU_BB
en04000506.vsd
QB1OPTR (bay n/sect.A1)
. . .
. . .
. . .
VPQB1TR (bay 1/sect.A1)
VPQB1TR (bay n/sect.A1)
VPDCTR (A1/A2)
EXDU_BB (bay n/sect.A1)
. . .
. . .
. . .
. . .
. . .
. . .
&
&
&
DCOPTR (A1/A2)
EXDU_BB (bay 1/sect.A1)
EXDU_DC (A1/A2)
IEC04000506 V1 EN
Figure 272: 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:
1MRK 502 071-UEN - Section 15
Control
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 541
Application manual