Woodward High PROTEC MRU4, Руководство пользователя

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Specifications
Voltage unbalance:
V012[x] Accuracy *1)
Threshold ±2% of the setting value or 1% Vn
Dropout Ratio 97% or 0.5% x Vn for V1> or V2>
103% or 0.5% x Vn for V1<
%(V2/V1) ±1%
t DEFT
±1% or ±10 ms
Operating Time <60 ms
Disengaging Time <45 ms
*1) Negative-sequence voltage V2 must be ≥ 0.01 x Vn, V1 must be ≥ 0.1 x Vn.
Over Frequency Protection:
f>[x] Accuracy *1)
f> ±10 mHz at fn
Dropout < 0.05% fn
t ±1% or ±10 ms
Operating time
Starting from f higher than f> + 0.02 Hz
+ 0.1 Hz
+ 2.0 Hz
<100 ms
typically 70 ms
typically 50 ms
Disengaging time <120 ms
Under Frequency Protection:
f<[x] Accuracy *1)
f< ±10 mHz at fn
Dropout < 0.05% fn
t ±1% or ±10 ms
Operating time
Starting from f lower than f< - 0.02 Hz
- 0.1 Hz
- 2.0 Hz
<100 ms
typically 70 ms
typically 50 ms
Disengaging time <120 ms
V Block f
±1.5% of the setting value or 1% Vn
Dropout ratio 103% or 0.5% Vn
*1) Accurracy is given for rated frequency fn
±10%.
Rate of Change of Frequency:
df/dt Accuracy *1)
df/dt
±0.1 Hz/s 2)
t ±1% or ±10 ms
Operating time
Starting from fn and df/dt > 0.1 Hz/s
At df/dt > 2 times pickup
At df/dt > 5 times pickup
<200 ms
typically <100 ms
typically < 70 ms
Disengaging time <120 ms
*1) Accurracy is given for rated frequency fn
±10%.
*2) 10% additional tolerance per Hz deviation from nominal frequency fn (e.g. at 45Hz, tolerance is 0.15Hz/s ).
653 MRU4 DOK-HB-MRU4-2E