Eaton EMR-4000 - Page 897

EMR-4000 IM02602009E
Undervoltage-blocking Frequency: Accuracy
*1)
Blocking below 15% Vn for phase-voltage frequency
Vn: 0.57 * rated Main VT, for Wye connection
Vn: 1.0 * rated Main VT, for Open-Delta connection.
V Block f ±1.5% of the setting value or 1% Vn
Dropout ratio 120% or 0.5% Vn
*1) Accurracy is given for rated frequency fn±10%.
Rate of Change of Frequency:
df/dt
Accuracy
*1)
Threshold
±0.1 Hz/s
2)
t ±1% or ±10 ms
Operating time
Starting from fn and df/dt > pickup + 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:
78V
Accuracy
Threshold ±0.5° [1-30°] at Vn and fn
Operating time <40 ms
Power Factor:
PF-55D/PF-55A
Accuracy
Trigger-PF ± 0.01 (absolute) or ±1°
Reset-PF ± 0.01 (absolute) or ±1°
t-trip ±1% or ±10 ms
T-Pickup Comp ±1% or ±10 ms
T-Reset Comp ±1% or ±10 ms
Operating time
*1)
55D <130 ms
55A <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.
www.eaton.com 897