ABB RELION 670 SERIES Applications Manual page 715

1MRK 506 369-UUS -
Line distance protection REL670 2.2 ANSI
Application manual
The following signals from each bus-section disconnector bay (A1A2_DC) are needed.
For B1B2_DC, corresponding signals from busbar B are used. The same type of module
(A1A2_DC) is used for different busbars, that is, for both bus-section disconnector
A1A2_DC and B1B2_DC.
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 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), have
to 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
S1S2OPTR No bus-section coupler connection between bus-sections 1 and 2.
VPS1S2TR The switch status of bus-section coupler BS is valid.
EXDU_BS No transmission error from the bay that contains the above information.
For a bus-coupler bay in section 1, these conditions are valid:
BBTR_OP (sect.1)
DCOPTR (A1A2)
DCOPTR (B1B2)
BBTR_OP (sect.2)
VP_BBTR (sect.1)
VPDCTR (A1A2)
VPDCTR (B1B2)
VP_BBTR (sect.2)
EXDU_12 (sect.1)
EXDU_DC (A1A2)
EXDU_DC (B1B2)
EXDU_12 (sect.2)
ANSI04000483 V1 EN
Figure 331: Signals to a bus-coupler bay in section 1 from any bays in each section
BBTR_OP
AND
OR
VP_BBTR
AND
EXDU_12
AND
en04000483_ansi.vsd
Section 15
Control
709