Single Circuit Breaker With Single Busbar - ABB REC670 Applications Manual

Section 14
Control
14.1.3.1
290

Single circuit breaker with single busbar

WA1
QB1
WA1_MCB
QA1
LINE
IEC10000093 V4 EN-US
Figure 108: Connection of SESRSYN function block in a single busbar
arrangement
Figure 108 illustrates connection principles for a single busbar. For the SESRSYN
function there is one voltage transformer on each side of the circuit breaker. The
voltage transformer circuit connections are straightforward; no special voltage
selection is necessary.
The voltage from busbar VT is connected to U3PBB1 and the voltage from the line
VT is connected to U3PLN1. The conditions of the VT fuses shall also be
connected as shown above. The voltage selection parameter CBConfig is set to No
voltage sel.
WA1_VT
GRP_OFF
LINE_VT
WA1_MCB
WA1_MCB
WA1_VT
LINE_MCB LINE_MCB
LINE_VT
1MRK 511 401-UEN A
M12324-3 v12
SESRSYN
U3PBB1*
U3PBB2*
U3PLN1*
U3PLN2*
UB1OK
UB1FF
ULN1OK
ULN1FF
IEC10000093-4-en.vsd
Bay control REC670 2.2 IEC
Application manual