ABB REB670 Series Applications Manual page 133

1MRK 505 370-UEN D
Table 22:
Version of REB670 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)
Please note that Table
contain any VT inputs.
QA1
BI1
QA2
BI2
BI3
QA3
IEC06000125 V1 EN-US
Figure 70: Combination between one-and-half breaker and double busbar station
For this type of busbar arrangement the double busbar bay is usually connected to the
reactive power compensation equipment (that is, shunt reactor or shunt capacitor). The
diameters in the one-and-half breaker part of the station have at the same time the role of the
bus-coupler bay. Therefore, zone interconnection, zone selection and disconnector replica
facilities have to be provided for all double busbar bays.
6.1.5 Six-zone busbar arrangements
6.1.5.1 General
Busbar differential protection application for some complex busbar arrangements with up to
six differential zones are shown and described in the following sections.
Busbar protection REB670
Application manual
Typical solutions for combination between double breaker and double busbar station layouts
22 is given for the preconfigured versions of REB670 which do not
QA1 QA1 QA1
BI1 BI1 BI1
QA2 QA2 QA2
BI2
BI2 BI2
BI3 BI3 BI3
QA3 QA3 QA3
layouts
Number of double
breaker feeders /
Number of double
busbar feeders in the
station
NA
2/4
NA
3/6
3/18
QA1
BI1
QA2
BI2
BI3
QA3
QB1 QB2
QA1
BI1
Differential protection
Number of REB670 IEDs required for
the scheme
NA
1
NA
3
3
ZA
ZB
QB1 QB2
QA1
BI1
xx06000125.vsd
GUID-28529398-F8D1-419B-9FB6-700BF19A2989 v1
Section 6
127