Double Circuit Breaker; 1/2 Circuit Breaker - ABB Relion REC670 Applications Manual

Section 13
Control
13.1.3.4

Double circuit breaker

WA1
WA1_MCB
WA1_QA1
IEC10000096 V4 EN-US
Figure 95: Connections of the SESRSYN function block in a double breaker arrangement
A double breaker arrangement requires two function blocks, one for breaker WA1_QA1 and one
for breaker WA2_QA1. No voltage selection is necessary, because the voltage from busbar 1 VT
is connected to U3PBB1 on SESRSYN for WA1_QA1 and the voltage from busbar 2 VT is
connected to U3PBB1 on SESRSYN for WA2_QA1. The voltage from the line VT is connected to
U3PLN1 on both function blocks. The condition of VT fuses shall also be connected as shown in
figure 94. The voltage selection parameter
blocks.
13.1.3.5

1 1/2 circuit breaker

Figure 96
each of them handling voltage selection for WA1_QA1, TIE_QA1 and WA2_QA1 breakers
respectively. The voltage from busbar 1 VT is connected to U3PBB1 on all three function blocks
and the voltage from busbar 2 VT is connected to U3PBB2 on all three function blocks. The
voltage from line1 VT is connected to U3PLN1 on all three function blocks and the voltage from
line2 VT is connected to U3PLN2 on all three function blocks. The positions of the
disconnectors and VT fuses shall be connected as shown in Figure 96.
232
WA2
WA2_
MCB
WA2_QA1
LINE_MCB
LINE
describes a 1 ½ breaker arrangement with three SESRSYN functions in the same IED,
WA1_VT
GRP_OFF
LINE_VT
WA1_MCB
WA2_MCB
WA1_MCB
LINE_MCB
WA1_VT
WA2_VT
WA2_VT
GRP_OFF
LINE_VT
LINE_MCB
WA2_MCB
LINE_VT
LINE_MCB
CBConfig is set to No voltage sel. for both function
1MRK 511 358-UEN A
M12329-3 v7
WA1_QA1
SESRSYN
U3PBB1*
U3PBB2*
U3PLN1*
U3PLN2*
UB1OK
UB1FF
ULN1OK
ULN1FF
WA2_QA1
SESRSYN
U3PBB1*
U3PBB2*
U3PLN1*
U3PLN2*
UB1OK
UB1FF
ULN1OK
ULN1FF
IEC10000096-6-en.vsd
M12330-3 v8
Application manual