50P/67P - Deft Overcurrent Protection - Eaton EDR-5000 Nstallation, Operation And Maintenance Manual

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50P/67P - DEFT Overcurrent Protection

Available Elements

50P[1] ,50P[2] ,50P[3]

For each element the following characteristic is available:

DEFT (definite time).

t = Tripping delay

I = Fault current

Pickup = If the pickup value is exceeded, the module /element starts to time out to trip .

This element offers a criterion setting. The criterion setting tells if the threshold is based on the fundamental (Phasor)

For Tripping curves, please refer to "Instantaneous Current Curves (Phase)" located in the Appendix.

If using inrush blockings, the tripping delay of the current protection functions must be

at least 30 ms or more in order to prevent faulty trippings (applies only to devices

which are equipped with Inrush protection)..

All overcurrent protective elements are identically structured.

All ANSI 67 elements (directional overcurrent protection), will be displayed

as ANSI 50 elements. That means, that the name of an ANSI 50 element

wont change, if it is set within the device planning from "non-directional" to

"directional".

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