Arcteq AQ-M255, Инструкция по эксплуатации

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Pick-up
Pick-up terms
1 voltage
2 voltages
3 voltages
Pick-up setting
0.00…120.00 %U
N
, setting step 0.01 %U
N
Inaccuracy:
- Voltage
±1.5 %U
SET
or ±30 mV
Low voltage block
Pick-up setting 0.00…80.00 %U
N
, setting step 0.01 %U
N
Inaccuracy:
- Voltage ±1.5 %U
SET
or ±30 mV
Operation time
Definite time function operating time setting 0.00…1800.00 s, setting step 0.005 s
Inaccuracy:
- Definite time (U
M
/U
SET
ratio 1.05
→
) ±1.0 % or ±35 ms
IDMT setting parameters:
k Time dial setting for IDMT
A IDMT constant
B IDMT constant
C IDMT constant
0.01…25.00, step 0.01
0…250.0000, step 0.0001
0…5.0000, step 0.0001
0…250.0000, step 0.0001
Inaccuracy:
- IDMT operating time
- IDMT minimum operating time
±1.5 % or ±20 ms
±20 ms
Instant operation time
Start time and instant operation time (trip):
- U
M
/U
SET
ratio 1.05
→
<65 ms
Retardation time (overshoot) <30 ms
Reset
Reset ratio 103 % of the pick-up voltage setting
Reset time setting
Inaccuracy: Reset time
0.010…10.000 s, step 0.005 s
±1.0 % or ±45 ms
Instant reset time and start-up reset <50 ms
No Notte! e!
• The low-voltage block is not in use when its pick-up setting is set to 0 %. The undervoltage
function is in trip stage when the LV block is disabled and the device has no voltage injection.
• After the low voltage blocking condition, the undervoltage stage does not trip unless the
voltage exceeds the pick-up setting first.
9.2.1.11 Neutral overvoltage protection (U0>; 59N)
Table. 9.2.1.11 - 334. Technical data for the neutral overvoltage function.
Measurement inputs
Voltage input (selectable)
Residual voltage from U3 or U4 voltage channel
Residual voltage calculated from U
L1
, U
L2
, U
L3
Voltage input magnitudes
RMS residual voltage U
0
Calculated RMS residual voltage U
0
Pick-up
A AQ Q-M255 -M255
Instruction manual
Version: 2.06
422 © Arcteq Relays Ltd
IM00020