EMR-5000
IM02602012E
Undervoltage and Overvoltage
(Phase and Auxiliary)
27M[x] / 59M[x] / 27A[x] / 59A[x]
Accuracy
Pickup
±1.5% of the setting value or 1% Vn
Dropout Ratio
97% or 0.5% Vn for 59[x]
*2)
103% or 0.5% Vn for 27[x]
*3)
t
DEFT
±1% or ±10 ms
Operating Time
Starting from
V higher than 1.1 x pickup value for 59[x] or
V lower than 0.9 x pickup value for 27[x]
<35 ms
Disengaging Time
<45 ms
*2) For 59M elements, the dropout is adustable between 80 ...99%
*2) For 27M elements, the dropout is adustable between 101...110%
Voltage unbalance:
47[x]
Accuracy
*1)
Threshold
±2% of the setting value or 1% Vn
%(V2/V1)
±1%
t
DEFT
±1% or ±10 ms
Operating Time
<60 ms
Disengaging Time
<40 ms
*1) Negative-sequence voltage V2 must be ≥ 0.01 x Vn, V1 must be ≥ 0.1 x Vn.
Over Frequency Protection:
81O[x]
Accuracy
*1)
Threshold
±10 mHz at fn
Dropout ratio
99.95% or 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:
81U[x]
Accuracy
*1)
Threshold
±10 mHz at fn
Dropout ratio
100.05% or 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
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