Signal
QB1OPTR QB1 is open.
QB2OPTR QB2 is open (AB_TRAFO, ABC_LINE).
QB220OTR QB2 and QB20 are open (ABC_BC).
VPQB1TR The switch status of QB1 is valid.
VPQB2TR The switch status of QB2 is valid.
VQB220TR The switch status of QB2 and QB20 are valid.
EXDU_BB No transmission error from the bay that contains the above information.
If there is an additional bus-section disconnector, the signal from the bus-section
disconnector bay (A1A2_DC) must be used:
Signal
DCOPTR The bus-section disconnector is open.
VPDCTR The switch status of bus-section disconnector DC is valid.
EXDU_DC No transmission error from the bay that contains the above information.
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 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 bus-section disconnector, these conditions from the A1 busbar section are valid:
QB1OPTR (bay 1/sect.A1)
S1DC_OP
VPS1_DC
EXDU_BB
en04000494.vsd
&
&
&
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 165: Signals from any bays in section A1 to a bus-section disconnector
For a bus-section disconnector, these conditions from the A2 busbar section are valid:
1MRK 505 370-UEN D Section 12
Control
Busbar protection REB670 317
Application manual
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