Hitachi Relion 670 Series Applications Manual page 249

1MRK506375-UEN Rev. N
(WA1)A1
(WA2)B1
(WA7)C
IEC04000482 V1 EN-US
Figure 98:
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
VPDCTR
EXDU_DC
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
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)
IEC04000483 V1 EN-US
Figure 99:
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.
Railway application RER670
Application manual
Section 1
A1A2_DC(BS)
B1B2_DC(BS)
ABC_LINE ABC_BC
Busbars divided by bus-section disconnectors (circuit breakers)
The bus-section disconnector is open.
The switch status of bus-section disconnector DC is valid.
No transmission error from the bay that contains the above information.
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.
Signals to a bus-coupler bay in section 1 from any bays in each section
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Section 2
ABC_BC
ABC_LINE
BBTR_OP
&
>1
VP_BBTR
&
EXDU_12
&
en04000483.vsd
A2
B2
C
AB_TRAFO
en04000482.vsd
Section 12
Control
243