Measured input
The function block uses analog current measurement values and always uses the RMS magnitude of
the current measurement input.
Table. 5.5.3 - 219. 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
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.
Table. 5.5.3 - 220. Settings for circuit breaker characteristics.
Name
Range
Step
Default
Description
Operations 1
0…200 000
1
50 000
The number of interrupting life operations at the nominal current (Close -
Open).
Operations 2
0…200 000
1
100
The number of interrupting life operations at the rated breaking current
(Open).
Current 1
(I
nom
)
0…100.00kA 0.01kA 1kA
The rated normal current (RMS).
Current 2
(I
max
)
0…100.00kA 0.01kA 20kA
The rated short-circuit breaking current (RMS).
Pick-up for alarming
For the alarm stages Alarm 1 and Alarm 2, the user can set the pick-up level for the number of
operations left. The pick-up setting is common for all phases and the alarm stage picks up if any of the
phases goes below this setting.
Table. 5.5.3 - 221. Pick-up settings.
Name Range Step Default
Description
Alarm
1
0:
Disabled
1:
Enabled
-
0:
Disabled Enable and disable the Alarm 1 stage.
Alarm
1 Set
0…200
000
1
1 000
Defines the pick-up threshold for remaining operations. When the number of remaining
operations is below this setting, the ALARM 1 signal is activated.
Alarm
2
0:
Disabled
1:
Enabled
-
0:
Disabled Enable and disable the Alarm 2 stage.
Alarm
2 Set
0…200
000
1
100
Defines the pick-up threshold for remaining operations. When the number of remaining
operations is below this setting, the ALARM 2 signal is activated.
A
AQ
Q-F205
-F205
Instruction manual
Version: 2.04
© Arcteq Relays Ltd
IM00013
331
Содержание AQ F205
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