13.1.3.4 Double circuit breaker
M12329-3 v7
WA1
WA2
WA1_QA1
WA2_QA1
LINE
WA1_MCB
WA2_
MCB
LINE_MCB
LINE_MCB
WA1_VT
WA1_QA1
GRP_OFF
SESRSYN
U3PBB1*
U3PBB2*
U3PLN1*
U3PLN2*
WA1_VT
LINE_VT
UB1OK
UB1FF
ULN1OK
ULN1FF
WA1_MCB
LINE_MCB
WA2_QA1
GRP_OFF
SESRSYN
U3PBB1*
U3PBB2*
U3PLN1*
U3PLN2*
WA2_VT
LINE_VT
UB1OK
UB1FF
ULN1OK
ULN1FF
WA2_MCB
LINE_MCB
WA2_MCB
WA1_MCB
WA2_VT
LINE_VT
IEC10000096-6-en.vsd
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
CBConfig
is set to
No voltage sel.
for both function
blocks.
13.1.3.5 1 1/2 circuit breaker
M12330-3 v8
Figure
96 describes a 1 ½ breaker arrangement with three SESRSYN functions in the same IED,
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.
Section 13 1MRK 511 358-UEN A
Control
232
Application manual
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