ABB RELION 670 Series Applications Manual page 123

1MRK 505 337-UUS A
ZA
152
ANSI11000238 V1 EN-US
Figure 54: Example of two single busbar sections with bus-sectionalizing disconnector and
The most common setups for this type of station are described in the following table.
Table 14:
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
any VT inputs.
Two differential zones are available in the IED and the connecting of the two zones is simply
controlled via zone interconnection logic, as described in section
transfer)". In practice, the closed position of the sectionalizer shall start the zone interconnection
logic inside the IED. All other thinks (that is, tripping) will automatically be arranged.
6.1.4.4 Single busbar arrangements with bus-section breaker
This arrangement is very similar to the single busbar arrangement. The bus-section breaker allows
the operator to split the station into two separate buses under full load. The requirement for
busbar protection scheme is that the scheme must have two independent differential zones, one
for each busbar section. If there is an internal fault on one of the two sections, bus-section circuit
breaker and all feeder circuit breakers associated with this section have to be tripped, leaving the
other busbar section in normal operation.
Application manual
152 152
152
eight feeder bays per each busbar section
Typical solutions for stations with two single busbar sections with bus-sectionalizing disconnector
14 is given for the preconfigured versions of REB670 which do not contain
189
152 152
ANSI11000238-1-en.vsd
Total Number of
feeders in both busbar
sections
4
8
12
12
24
Differential protection
ZB
152
Number of REB670 IEDs required for the
scheme
1
1
3
3
3
"Zone interconnection (Load
Section 6
M6643-3 v4
117