Autosynchronizer For Network Breaker Asnscsyn - ABB RELION REX640 Technical Manual

1MRS759142 C
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REX640
Technical Manual

Autosynchronizer for network breaker ASNSCSYN

Identification
Function description
Autosynchronizer for network breaker
Function block
GUID-C6A0C8BE-B29E-47E9-ACCA-A228F9B6F155 V1 EN
Figure 765: Function block
Functionality
The autosynchronizer for network breaker function ASNSCSYN can be used for the
controlled closing of a bus coupler or tie feeder circuit breaker (CB). ASNSCSYN
includes the functionality of synchrocheck, energizing check and
autosynchronization.
ASNSCSYN checks the power system conditions between both networks across the
circuit breaker. The energizing check is used to check that at least one side is dead to
ensure that closing can be done safely.
In case of a synchronous system, the closing command is issued after considering the
function modes, essential checks, CB closing time and the paralleling conditions. In
case of asynchronous systems, the function initiates the matching of voltage and
frequency with the help of available generators through Autosynchronizer co-
ordinator ASCGAPC.
The function contains a blocking functionality. It is possible to block function outputs.
IEC 61850 IEC 60617
identification identification
ASNSCSYN AUTOSYNCBT/
T
Section 9
Control functions
ANSI/IEEE C37.2
device number
25AUTOSYNCB
T/T
1429