Woodward HighPROtec MCDLV4, Руководство пользователя

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Specifications
Low Voltage Ride Through Protection:
LVRT Accuracy
Voltage Pickup (Start) ±1.5% of the setting value or 1% Vn
Voltage Dropout Ratio (Recover) Adjustable, at least 0.5% Vn
Tripping time delay ±1% from settings or ±10 ms
Operating Time
Starting from
V lower than 0.9 x pickup value
<35 ms
Disengaging Time <45 ms
Volts per Hertz:
V/f >[x] Accuracy
Pickup ±1% *1)
(fn ±10% / 0.1-1.5 Vn (with Vn=100V) / 100-150%)
t DEFT
±1% or ±10 ms
t-Multiplier ±5% ±10 ms
( Volts/Hertz (%) higher than 1.1 x Pickup)
INV A
INV B
INV C
t-reset ±1% or ±10 ms
INV A
INV B
INV C
Operating Time
Starting from Volts/Hertz (%) higher than 1.1 x Pickup
<60 ms (at fn) or < 4 cycles
Disengaging Time <85 ms (at fn) or < 5 cycles
*1) The V/Hz function provides reliable measurements of V/Hz for a frequency range of fn
±10%
,
if voltage (rms) is greater than 15% Vn and < 800V. U/f < 48 V/Hz.
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
1259 MCDLV4 DOK-HB-MCDLV4-2E