International Standards and Conformity Assessment for all electrical, electronic and related technologies

SC 17C


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WG 31 Convenor & Members

Title & Task

WG 31

IEC/TR 62271-307: High-voltage switchgear and controlgear - Part 307: Guidance for the extension of validity of type tests


To develop a guide which is applicable to factory-assembled metal-enclosed switchgear and controlgear for alternating current of rated voltages above 1 kV and <= 52 kV and equipment included in the same enclosure with any possible mutual influence.