ABB RET670 - Page 630

For bus-coupler bay n, these conditions are valid:
1289OPTR (bay 1)
1289OPTR (bay 2)
. . .
. . .
1289OPTR (bay n-1)
AND
BBTR_OP
VP1289TR (bay 1)
VP1289TR (bay 2)
. . .
. . .
VP1289TR (bay n-1)
AND
VP_BBTR
EXDU_12 (bay 1)
EXDU_12 (bay 2)
. . .
. . .
EXDU_12 (bay n-1)
AND
EXDU_12
en04000481_ansi.vsd
ANSI04000481 V1 EN
Figure 243: Signals from any bays in bus-coupler bay n
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:
Section 1 Section 2
A1A2_DC(BS)
B1B2_DC(BS)
ABC_LINE
ABC_BC
ABC_LINE ABC_BC
(WA1)A1
(WA2)B1
(WA7)C C
B2
A2
en04000482_ansi.vsd
AB_TRAFO
ANSI04000482 V1 EN
Figure 244: Busbars divided by bus-section disconnectors (circuit breakers)
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.
Section 3 1MRK504116-UUS C
IED application
624
Application manual