Eaton EMR-4000, Инструкция по установке, эксплуатации и обслуживанию

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EMR-4000 IM02602009E
Protection Elements Accuracy
The tripping delay relates to the time between alarm and trip.
The accuracy of the operating time relates to the time between fault entry
and the time when the protection element is picked-up.
Reference conditions for all Protection Elements: sine wave, at rated frequency, total harmonic distortion < 1%
Measuring criterion: Fundamental
Overcurrent Protection Elements:
50P[x] Accuracy
Pickup ±1.5% of the setting value or 1% In.
Dropout Ratio 97% or 0.5% In
t DEFT
±1% or ±10 ms
Operating Time
At testing current >= 2 times pickup value
<36ms
Disengaging Time
<55 ms
Overcurrent Protection Elements:
51P[x] Accuracy
Pickup ±1.5% of the setting value or 1% In.
Dropout Ratio 97% or 0.5% x In
Operating Time
At testing current >= 2 times pickup value
<36 ms
Disengaging Time <55 ms
t-Multiplier ±5% (according to selected curve)
Reset Mode ±5% (according to selected curve)
t-reset (Reset Mode = t-delay) ±1% or ±10 ms
Ground Current Elements:
50X[x] / 50R[x] Accuracy *3)
Pickup (measured ground current)
Pickup (calculated ground current)
±1.5% of the setting value or 1% In
±2.0% of the setting value or 1.5% In
Dropout Ratio 97% or 0.5% In
t DEFT
±1% or ±10 ms
Operating Time
Starting from IE higher than 1.2 x IE> <45 ms
Disengaging Time <55 ms
t-reset (Reset Mode = t-delay) ±1% or ±10 ms
Ground Current Elements:
51X[x] / 51R[x] Accuracy *3)
Pickup (measured ground current)
Pickup (calculated ground current)
±1.5% of the setting value or 1% In
±2.0% of the setting value or 1.5% In
Dropout Ratio 97% or 0.5% In
Operating Time
Starting from IE higher than 1.1 x IE> <45 ms
Disengaging Time <55 ms
t-Multiplier ±5% (according to selected curve)
Reset Mode ±5% (according to selected curve)
t-reset (Reset Mode = t-delay) ±1% or ±10 ms
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