ABB Relion 670 Series Product Manual page 11

Busbar protection REB670
Version 2.2
Table 4. Typical solutions for stations with two busbar sections connected with bus-sectionalizing disconnector
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)
QB1 QB7 QB1
QA1 QA1
BI1 BI1
IEC06000013 V1 EN-US
Figure 4. Example of single bus station with transfer bus
QB1 QB2 QB1 QB2
BI1
QA1 QA1
QA1
BI1
IEC11000239 V1 EN-US
Figure 5. Example of double bus-single breaker station
Table 5. Typical solutions for double bus-single breaker stations
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
Hitachi Power Grids
Total Number of feeders in both busbar
sections
4
8
12
12
24
QB7 QB1 QB7 QB1
QA1
QA1
BI1
QB1 QB2 QB1 QB2 QB1 QB2
QA1 QA1
BI1 BI1 BI1
Number of feeders in the station (excluding
bus-coupler bay)
)
3*
)
7*
NA
)
11*
)
23*
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QB7 QB1 QB7
QA1
BI1 BI1
ZA
ZB
QB1 QB2
QA1 QA1
BI1 BI1
IEC11000239-1-en.vsd
1MRK 505 373-BEN P
Number of REB670 IEDs required for the
scheme
1
1
3
3
3
ZA
ZB
QB1 QB7
QA1
BI1
xx06000013.vsd
Number of REB670 IED required for the
scheme
1
1
NA
3
3
11