ABB REB670 Applications Manual page 141

1MRK 505 337-UUS -
Application manual
load will not be interrupted. The tripping logic for the circuit breaker failure protection
must be carefully arranged.
The most common setups for this type of busbar arrangement are described in the
following table.
Table 17: Typical solutions for double circuit breaker busbar arrangement
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 17
contain any VT inputs.
A principle overall drawing of how to use REB670 for this type of station is given in
figure 58.
Numbers of feeders per
station
4
4/8
6/12
6/12
12/24
is given for the preconfigured versions of REB670 which do not
Section 6
Differential protection
Number of REB670 IEDs
required for the scheme
2
1/2
3/6
3/6
3/6
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