Arcteq AQ-M255, Инструкция по эксплуатации

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• The frequency is measured two seconds after a signal is received.
• The fixed frequency mode: When the fixed mode is used, the system's nominal frequency
should be set to 50 or 60 Hz.
• The tracked frequency mode: When tracked mode is used, the system's nominal frequency
can be anything between 7...75 Hz.
9.2.1.14 Rate-of-change of frequency protection (df/dt>/<; 81R)
Table. 9.2.1.14 - 337. Technical data for the rate-of-change of frequency function.
Input signals
Sampling mode
Fixed
Tracking
Frequency reference 1
Frequency reference 2
Frequency reference 3
CT1IL1, CT2IL1, VT1U1, VT2U1
CT1IL2, CT2IL2, VT1U2, VT2U2
CT1IL3, CT2IL3, VT1U3, VT2U3
Pick-up
df/dt >/< pick-up setting 0.15…1.00 Hz/s, setting step 0.01 Hz
f> limit 10.00…70.00 Hz, setting step 0.01 Hz
f< limit 7.00…65.00 Hz, setting step 0.01 Hz
Pick-up inaccuracy
- df/dt ±5.0 %I
SET
or ±20 mHz/s
- frequency
±15 mHz (U > 30 V secondary)
±20 mHz (I > 30 % of rated secondary)
Operation time
Definite time function operating time setting 0.00…1800.00 s, setting step 0.005 s
Inaccuracy:
- Definite time (I
M
/I
SET
ratio +/- 50 mHz) ±1.5 % or ±110 ms (max. step size: 100 mHz)
Start time and instant operation time (trip):
- f
M
/f
SET
ratio +/- 20 mHz (overreach)
<200 ms
- f
M
/f
SET
ratio +/- 200 mHz (overreach) <90 ms
Reset
f< and f> frequency limit ±0.020 Hz
df/dt ±10.0 % of pick-up or 50 mHz/s
Instant reset time and start-up reset:
- f
M
/f
SET
ratio +/- 50 mHz
<325 ms (max. step size: 100 mHz)
No Notte! e!
• Frequency is measured two seconds after a signal is received.
9.2.1.15 Machine thermal overload protection (TM>; 49M)
Table. 9.2.1.15 - 338. Technical data for the machine thermal overload protection function.
Measurement inputs
Current inputs Phase current inputs: I
L1
(A), I
L2
(B), I
L3
(C)
Current input magnitudes
TRMS phase currents (up to the 31
st
harmonic)
A AQ Q-M255 -M255
Instruction manual
Version: 2.06
© Arcteq Relays Ltd
IM00020 425