Single Busbar Arrangements With Bus-Section Breaker - ABB REB670 Applications Manual

1MRK 505 337-UUS -
6.1.4.4
Application manual
ZA
152
152 152
ANSI11000238 V1 EN
Figure 54: Example of two single busbar sections with bus-sectionalizing
disconnector and eight feeder bays per each busbar section
The most common setups for this type of station are described in the following table.
Table 14: Typical solutions for stations with two single busbar sections with bus-sectionalizing
disconnector
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 14
contain 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
interconnection (Load 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.

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
189
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ANSI11000238-1-en.vsd
Total Number of feeders
in both busbar sections
4
8
12
12
24
is given for the preconfigured versions of REB670 which do not
Section 6
Differential protection
ZB
152 152
Number of REB670 IEDs
required for the scheme
1
1
3
3
3
"Zone
131