Figure. 5.6.3 - 202. Simplified function block diagram of the circuit breaker wear function.
Measured input
The function block uses analog current measurement values and always uses the RMS magnitude of
the current measurement input.
Table. 5.6.3 - 302. Measurement inputs of the circuit breaker wear function.
Signal
Description
Time base
IL1RMS
RMS measurement of phase L1 (A) current
5ms
IL2RMS
RMS measurement of phase L2 (B) current
5ms
IL3RMS
RMS measurement of phase L3 (C) current
5ms
General settings
The following general settings define the general behavior of the function. These settings are static i.e.
it is not possible to change them by switching the setting group.
Table. 5.6.3 - 303. General settings.
Name
Range
Default
Description
CBW LN
mode
1: On
2: Blocked
3: Test
4: Test/
Blocked
5: Off
1: On
Set mode of CBW block.
This parameter is visible only when
Allow setting of individual LN mode is enabled in
General menu.
CBW in side
1:Side 1
2:Side 2
1:Side
1
Defines which current measurement module is used by the function.
Circuit breaker characteristics settings
The circuit breaker characteristics are set by two operating points, defined by the nominal breaking
current, the maximum allowed breaking current and their respective operation settings. This data is
provided by the circuit breaker's manufacturer.
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00001
377
Summary of Contents for Generator Commander
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