ABB REB670 Series - Six-zone busbar arrangements; General

Table 22: Typical solutions for combination between double breaker and double busbar station layouts
Version of REB670 IED Number of double
breaker feeders /
Number of double
busbar feeders in the
station
Number of REB670 IEDs required for
the scheme
3PH; 2-zones, 4-bays BBP (A20) NA NA
3PH; 2-zones, 8-bays BBP (A31) 2/4 1
1Ph; 2-zones, 12-bays BBP (B20) NA NA
1Ph; 2-zones, 12-bays BBP (B21) 3/6 3
1Ph; 2-zones, 24-bays BBP (B31) 3/18 3
Please note that Table 22 is given for the preconfigured versions of REB670 which do not
contain any VT inputs.
xx06000125.vsd
BI3
BI1
QA1
BI2
QA2
QA3
BI3
BI1
QA1
BI2
QA2
QA3
BI3
BI1
QA1
BI2
QA2
QA3
BI3
BI1
QA1
BI2
QA2
QA3
BI3
BI1
QA1
BI2
QA2
QA3
ZA
ZB
BI1
QA1
QB1
QB2
BI1
QA1
QB1
QB2
IEC06000125 V1 EN-US
Figure 70: Combination between one-and-half breaker and double busbar station
layouts
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
GUID-28529398-F8D1-419B-9FB6-700BF19A2989 v1
Busbar differential protection application for some complex busbar arrangements with up to
six differential zones are shown and described in the following sections.
1MRK 505 370-UEN D Section 6
Differential protection
Busbar protection REB670 127
Application manual