Signals In Breaker And A Half Arrangement - ABB RELION RET670 Applications Manual

1MRK 504 163-UUS A
15.3.6.4
Transformer protection RET670 2.2 ANSI
Application manual
289OPTR (bay 1/sect.B1)
. . .
. . .
. . .
289OPTR (bay n/sect.B1)
VP289TR (bay 1/sect.B1)
. . .
. . .
. . .
VP289TR (bay n/sect.B1)
EXDU_DB (bay 1/sect.B1)
. . .
. . .
. . .
EXDU_DB (bay n/sect.B1)
ANSI04000501 V1 EN-US
Figure 348: Signals from double-breaker bays in section B1 to a bus-section
disconnector
For a bus-section disconnector, these conditions from the B2 busbar section are valid:
289OPTR (bay 1/sect.B2)
. . .
. . .
. . .
289OPTR (bay n/sect.B2)
VP289TR (bay 1/sect.B2)
. . .
. . .
. . .
VP289TR (bay n/sect.B2)
EXDU_DB (bay 1/sect.B2)
. . .
. . .
. . .
EXDU_DB (bay n/sect.B2)
ANSI04000502 V1 EN-US
Figure 349: Signals from double-breaker bays in section B2 to a bus-section
disconnector

Signals in breaker and a half arrangement

If the busbar is divided by bus-section disconnectors, the condition for the busbar
disconnector bay no other disconnector connected to the bus-section must be made by
a project-specific logic.
The same type of module (A1A2_DC) is used for different busbars, that is, for both
bus-section disconnector A1A2_DC and B1B2_DC. But for B1B2_DC, corresponding
signals from busbar B are used.
S1DC_OP
AND
VPS1_DC
AND
EXDU_BB
AND
en04000501_ansi.vsd
S2DC_OP
AND
VPS2_DC
AND
EXDU_BB
AND
en04000502_ansi.vsd
Section 15
Control
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