Hitachi Relion 670 Series Applications Manual page 248

Section 12
Control
12.4.3.2 Configuration
The signals from the other bays connected to the bus-coupler module ABC_BC are described below.
12.4.3.3 Signals from all feeders
To derive the signals:
Signal
BBTR_OP
VP_BBTR
EXDU_12
These signals from each line bay (ABC_LINE), each transformer bay (AB_TRAFO), and bus-coupler
bay (ABC_BC), except the own bus-coupler bay are needed:
Signal
QQB12OPTR
VPQB12TR
EXDU_12
For bus-coupler bay n, these conditions are valid:
QB12OPTR (bay 1)
QB12OPTR (bay 2)
QB12OPTR (bay n-1)
VPQB12TR (bay 1)
VPQB12TR (bay 2)
VPQB12TR (bay n-1)
EXDU_12 (bay 1)
EXDU_12 (bay 2)
EXDU_12 (bay n-1)
IEC04000481 V1 EN-US
Figure 97:
If the busbar is divided by bus-section disconnectors into bus-sections, the signals BBTR are
connected in parallel - if both bus-section disconnectors are closed. So for the basic project-specific
logic for BBTR above, add this logic:
242
No busbar transfer is in progress concerning this bus-coupler.
The switch status is valid for all apparatuses involved in the busbar transfer.
No transmission error from any bay connected to the WA1/WA2 busbars.
QB1 or QB2 or both are open.
The switch status of QB1 and QB2 are valid.
No transmission error from the bay that contains the above information.
. . .
. . .
. . .
. . .
. . .
. . .
Signals from any bays in bus-coupler bay n
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BBTR_OP
&
VP_BBTR
&
EXDU_12
&
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1MRK506375-UEN Rev. N
M13553-138 v4
M13553-6 v4
Railway application RER670
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