Hitachi Relion 670 Series Applications Manual page 258

Section 12
Control
Signal
QB1OPTR
QB2OPTR
QB220OTR
VPQB1TR
VPQB2TR
VQB220TR
EXDU_BB
If there is an additional bus-section disconnector, the signal from the bus-section disconnector bay
(A1A2_DC) must be used:
Signal
DCOPTR
VPDCTR
EXDU_DC
If there is an additional bus-section circuit breaker rather than an additional bus-section disconnector
the signals from the bus-section, circuit-breaker bay (A1A2_BS) rather than the bus-section
disconnector bay (A1A2_DC) must be used:
Signal
QB1OPTR
QB2OPTR
VPQB1TR
VPQB2TR
EXDU_BS
For a bus-section disconnector, these conditions from the A1 busbar section are valid:
QB1OPTR (bay 1/sect.A1)
QB1OPTR (bay n/sect.A1)
VPQB1TR (bay 1/sect.A1)
VPQB1TR (bay n/sect.A1)
EXDU_BB (bay 1/sect.A1)
EXDU_BB (bay n/sect.A1)
IEC04000494 V1 EN-US
Figure 110:
For a bus-section disconnector, these conditions from the A2 busbar section are valid:
252
QB1 is open.
QB2 is open (AB_TRAFO, ABC_LINE).
QB2 and QB20 are open (ABC_BC).
The switch status of QB1 is valid.
The switch status of QB2 is valid.
The switch status of QB2 and QB20 are valid.
No transmission error from the bay that contains the above information.
The bus-section disconnector is open.
The switch status of bus-section disconnector DC is valid.
No transmission error from the bay that contains the above information.
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.
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
Signals from any bays in section A1 to a bus-section disconnector
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S1DC_OP
&
VPS1_DC
&
EXDU_BB
&
en04000494.vsd
Railway application RER670
1MRK506375-UEN Rev. N
Application manual