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hi in MV switchgear/24kv in power frequency withstand voltage test -Ud:50kv for 1 min - according to IEC 60071-1 what is acceptable leakage current for power frequency voltage test? or how much should be the maximum leakage current? thanks for your help.

Rated voltage values according to IEC 60071-1 (Insulation co-ordination – Part 1: Definitions, principles and rules) (see Fig. B5) Ur = rated voltage, rms value, kV. It is the maximum rms value of voltage that the equipment can withstand permanently. 24 kV rms for example. Ud = rated power...

Dear che12345 Thank you very much for your attention. it was very useful for me.

thanks che12345 for your help I checked out that standard (IEC 62271-1 sub-clause 2.2.1 Altitude ) And I calculated Ka factor completely acc to the full formula. it is Ka=1.02 in altitude 1200m . my test is in lab. I want to know what should I do with this Ka now ?? 1) test MV 20kv in...

hi acc to IEC 62271-200 / 6.2.5 for insulated test in MV switchgear should be power frequency test voltage of 150% of the rated voltage for 1 min at an altitude of 1000 meters above sea level. that in 20kv it will be 50kv for 1 min. my question is here ,altitude of above see level in our city...