ABB Relion 670 Series Applications Manual page 342

Section 14
Control
Signal
S1S2OPTR
VPS1S2TR
EXDU_BS
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-US
Figure 142: Signals to a bus-coupler bay in section 1 from any bays in each section
For a bus-coupler bay in section 2, the same conditions as above are valid by changing section 1 to
section 2 and vice versa.
14.4.3.4 Signals from bus-coupler
If the busbar is divided by bus-section disconnectors into bus-sections, the signals BC_12 from the
busbar coupler of the other busbar section must be transmitted to the own busbar coupler if both
disconnectors are closed.
(WA1)A1
(WA2)B1
(WA7)C
ANSI04000484 V1 EN-US
Figure 143: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
336
No bus-section coupler connection between bus-sections 1 and 2.
The switch status of bus-section coupler BS is valid.
No transmission error from the bay that contains the above information.
AND
OR
AND
AND
Section 1
A1A2_DC(BS)
B1B2_DC(BS)
ABC_BC
© Copyright 2017 ABB. All rights reserved
BBTR_OP
VP_BBTR
EXDU_12
en04000483_ansi.vsd
Section 2
A2
B2
C
ABC_BC
en04000484_ansi.vsd
1MRK 511 401-UUS F
M13553-58 v5
Bay control REC670
Application manual