Eaton EDR-5000 - Protection Elements Accuracy

EDR-5000 IM02602007E
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] / 67P[x]
Accuracy
*2)
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
(directional elements: <40ms)
Disengaging Time
<55 ms
Overcurrent Protection Elements:
51P[x] / 67P[x]
Accuracy
*2)
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
(directional elements: <40ms)
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
*2) For directional elements, accuracy of MTA: ±3° at I >20% In.
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