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Do you have a D64R trip curve?

Yes, see attached for the curve.

D64R relays trip curves.pdf


The trip times the D64R processor calculates a normalized trip current, based on

the actual measured value divided by the trip current setting.

‘’1x’’ means one times the G/F setting.

‘’2x’’ means twice the G/F setting.  Etc.

For each setting you can fill in the values in the graph.

The X -axis will vary depending on the actual Ground Fault Trip setting.