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Undervoltage-blocking Frequency:
Blocking below 15% Vn
V Block f
Dropout ratio
*1) Accurracy is given for rated frequency fn±10%.
Rate of Change of Frequency:
df/dt
Threshold
t
Operating time
Starting from fn and df/dt > pickup + 0.1 Hz/s
Disengaging time
*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
DF
DT
Vector surge:
78V
Threshold
Operating time
Power Factor:
PF-55D/PF-55A
Trigger-PF
Reset-PF
t-trip
T-Pickup Comp
T-Reset Comp
Operating time
55D
55A
*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.
EMR-4000
At df/dt > 2 times pickup
At df/dt > 5 times pickup
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Accuracy
for phase-voltage frequency
Vn: 0.57 * rated Main VT, for Wye connection
Vn: 1.0 * rated Main VT, for Open-Delta connection.
±1.5% of the setting value or 1% Vn
120% or 0.5% Vn
Accuracy
±0.1 Hz/s
2)
±1% or ±10 ms
<200 ms
typically <100 ms
typically < 70 ms
<120 ms
±20 mHz at fn
±1% or ±10 ms
±0.5° [1-30°] at Vn and fn
<40 ms
± 0.01 (absolute) or ±1°
± 0.01 (absolute) or ±1°
±1% or ±10 ms
±1% or ±10 ms
±1% or ±10 ms
*1)
<130 ms
<200 ms
*1)
*1)
Accuracy
Accuracy
Accuracy
IM02602009E
853
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