Application Examples; Single Circuit Breaker With Single Busbar - ABB RELION 670 Series Applications Manual

Section 14
Control
14.1.3

Application examples

The synchronizing function block can also be used in some switchyard arrangements, but with
different parameter settings. Below are some examples of how different arrangements are
connected to the IED analogue inputs and to the function block SESRSYN. One function block
is used per circuit breaker.
14.1.3.1

Single circuit breaker with single busbar

WA1_MCB
IEC10000093 V4 EN-US
Figure 312: Connection of SESRSYN function block in a single busbar arrangement
Figure 312
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
524
The input used below in example are typical and can be changed by use of
configuration and signal matrix tools.
The SESRSYN and connected SMAI function block instances must have the
same cycle time in the application configuration.
WA1
QB1
QA1
LINE
illustrates connection principles for a single busbar. For the SESRSYN function there
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 505 343-UEN B
SESRSYN
U3PBB1*
U3PBB2*
U3PLN1*
U3PLN2*
UB1OK
UB1FF
ULN1OK
ULN1FF
IEC10000093-4-en.vsd
Application manual
M12323-3 v6
M12324-3 v11