REF protection % of winding covered
REF protection % of winding covered
(OP)
Hello,
I'm looking for a litrature/ manual/explanation (which is availble on web) on how to calculate % of winding covered from a Resricted Earthfault setting.Can anyone shed some light on to this?
Thankyou
I'm looking for a litrature/ manual/explanation (which is availble on web) on how to calculate % of winding covered from a Resricted Earthfault setting.Can anyone shed some light on to this?
Thankyou






RE: REF protection % of winding covered
the restricted earth fault (REF) and negative-sequence
transformer differential (87TQ) functions are explained as a
means to detect ground faults near the neutral and turn-to-turn
faults, respectively.
See:
www.selinc.com/WorkArea/DownloadAsset.aspx?id=7263
RE: REF protection % of winding covered