Woodward HighPROtec MCDLV4, Руководство пользователя, Страница: 1260 / 1275

Specifications
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 ).
Rate of Change of Frequency:
DF/DT Accuracy
DF ±20 mHz at fn
DT ±1% or ±10 ms
Vector surge:
delta phi Accuracy
delta phi ±0.5° [1-30°] at Vn and fn
Operating time <40 ms
Power Factor:
PF[x] Accuracy
Trigger-PF ± 0.01 (absolute) or ±1°
Reset-PF ± 0.01 (absolute) or ±1°
t-trip ±1% or ±10 ms
Operating time *1)
Measuring Method = Fundamental <130 ms
Measuring Method = True RMS <200 ms
*1) The calculation of the Power Factor will be available 300 ms after the required measuring values (I > 2.5% In and V > 20% Vn) have
energized the measuring inputs.
1260 MCDLV4 DOK-HB-MCDLV4-2E