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AS definition of High Voltage and Medium Voltage

AS definition of High Voltage and Medium Voltage

AS definition of High Voltage and Medium Voltage

Can someone point me to where the definition of HV and MV is made in one of the AS Standards. It seems that there is more and more reference made to HV being above 1kV and less reference to MV/HV.

From memory (and this is a bad thing in my case), MV was 1000V up to but excluding 66kV, and HV was 66kV and above. I guess nowadays there is EHV as well somewhere.

Reference to ANSI/IEEE is made here: http://www.eng-tips.com/viewthread.cfm?qid=175672 but seems rather conflicting and does not apply to Australia.

Does anyone have any reference for me as far as AS goes? Thanks

RE: AS definition of High Voltage and Medium Voltage

This extract was what I was thinking of from AS61000.3.7. Not sure if there are other references though.

1 This Standard uses the following terms for system voltage:
– low voltage (LV) refers to UN ≤ 1 kV;
– medium voltage (MV) refers to 1 kV < UN ≤ 35 kV;
– high voltage (HV) refers to 35 kV < UN ≤ 230 kV;
– extra high voltage (EHV) refers to 230 kV < UN...."

I guess this is only really relevant to the specific Standard and not a rule as it conflicts with AS3000 in the first instance?! AS3000 only refers to HV as being above 1000V.

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