ABB Relion 670 Series Product Manual page 12

Busbar protection REB670
Version 2.2
ZA
ZB
QB1 QB2 QB7 QB1 QB2
QA1 QA1
BI1
BI1
IEC06000015 V1 EN-US
Figure 6. Example of double bus-single breaker station with transfer bus
ZA1
ZB1
QB1 QB2 QB1 QB2
BI1
QA1 QA1
QA1
BI1 BI1
IEC06000016 V1 EN-US
Figure 7. Example of double bus-single breaker station with two bus-section and two bus-coupler breakers (typical GIS station layout)
Table 6. Possible solutions for a typical GIS station
Version of REB670 pre-configured IED
3PH; 2-zones, 4-bays BBP (A20)
3PH; 2-zones, 8-bays BBP (A31)
1Ph; 2-zones, 12-bays BBP (B20)
1Ph; 2-zones, 12-bays BBP (B21)
1Ph; 2-zones, 24-bays BBP (B31)
)
* with just one CT input from bus-coupler bay
12
QB7 QB1 QB2 QB7 QB20
QA1
BI1
QB1 QB2 QB1 QB2 QB1 QB2
QA1 QA1 QA1
BI1 BI1 BI1
Number of feeders on each side of the
station (excluding bus-coupler & bus-
section bays)
NA
)
5*
NA
)
9*
)
21*
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QB1 QB2 QB7 QB1 QB2
QA1 QA1
BI1
BI1
QA1
BI1
QB1 QB2 QB1 QB2
BI1 QA1
QA1 QA1
BI1 BI1
1MRK 505 373-BEN P
QB7
xx06000015.vsd
ZA2
ZB2
QB1 QB2 QB1 QB2
QA1 QA1
BI1 BI1
Number of REB670 IEDs required for the
scheme
NA
2
NA
6
6
BI1
QA1
xx06000016.vsd
Hitachi Power Grids