• Voltage memory activation captures healthy situation voltage angles, one cycle before actual
activation (50Hz/20ms before “bolted” fault)
9.2.2 Control functions
9.2.2.1 Setting group selection
Table. 9.2.2.1 - 348. Technical data for the setting group selection function.
Settings and control modes
Setting groups
8 independent, control-prioritized setting groups
Control scale
Common for all installed functions which support setting groups
Control mode
Local
Any digital signal available in the device
Remote
Force change overrule of local controls either from the setting tool, HMI or SCADA
Operation time
Reaction time
<5 ms from receiving the control signal
9.2.2.2 Object control and monitoring
Table. 9.2.2.2 - 349. Technical data for the object control and monitoring function.
Signals
Input signals
Digital inputs
Software signals
Output signals
Close command output
Open command output
Operation time
Breaker traverse time setting
0.02…500.00 s, setting step 0.02 s
Max. close/open command pulse length
0.02…500.00 s, setting step 0.02 s
Control termination time out setting
0.02…500.00 s, setting step 0.02 s
Inaccuracy:
- Definite time operating time
±0.5 % or ±10 ms
Breaker control operation time
External object control time
<75 ms
Object control during auto-reclosing
See the technical sheet for the auto-reclosing function.
9.2.3 Monitoring functions
9.2.3.1 Current transformer supervision
Table. 9.2.3.1 - 350. Technical data for the current transformer supervision function.
Measurement inputs
Current inputs
Phase current inputs: I
L1
(A), I
L2
(B), I
L3
(C)
Residual current channel I
01
(Coarse) (optional)
Residual current channel I
02
(Fine) (optional)
Current input magnitudes
RMS phase currents
RMS residual current (I
01
, I
02
) (optional)
A
AQ
Q-M255
-M255
Instruction manual
Version: 2.06
432
© Arcteq Relays Ltd
IM00020
Summary of Contents for AQ-M255
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