ABB REL670 2.2 IEC - Signals from Bus-Coupler

15.4.4.2 Signals from bus-coupler
M13566-6 v4
If the busbar is divided by bus-section disconnectors into bus-sections, the busbar-
busbar connection could exist via the bus-section disconnector and bus-coupler
within the other bus-section.
Section 1 Section 2
A1A2_DC(BS)
B1B2_DC(BS)
AB_TRAFO ABC_BCAB_TRAFO ABC_BC
(WA1)A1
(WA2)B1
(WA7)C C
B2
A2
en04000487.vsd
IEC04000487 V1 EN-US
Figure 333: Busbars divided by bus-section disconnectors (circuit breakers)
The project-specific logic for input signals concerning bus-coupler are the same as
the specific logic for the line bay (ABC_LINE):
Signal
BC_12_CL A bus-coupler connection exists between busbar WA1 and WA2.
VP_BC_12 The switch status of BC_12 is valid.
EXDU_BC No transmission error from bus-coupler bay (BC).
The logic is identical to the double busbar configuration “Signals from bus-
coupler“.
15.4.4.3 Configuration setting
M13566-22 v5
If there are no second busbar B and therefore no QB2 disconnector, then the
interlocking for QB2 is not used. The state for QB2, QC21, BC_12 are set to open
by setting the appropriate module inputs as follows. In the functional block
diagram, 0 and 1 are designated 0=FALSE and 1=TRUE:
• QB2_OP = 1
• QB2QB2_CL = 0
• QC21_OP = 1
• QC21_CL = 0
• BC_12_CL = 0
• VP_BC_12 = 1
Section 15 1MRK 506 369-UEN B
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670 Line distance protection REL670 2.2 IEC
Application manual