BS PD IEC/TR 62271-307:2015, which is a Technical Report, refers to prefabricated metal-enclosed and solid-insulation enclosed (both hereinafter called enclosed) switchgear and controlgear assemblies for alternating current of rated voltages above 1 kV and up to and including 52 kV as specified in IEC 62271-200 and IEC 62271-201, and to other equipment included in the same enclosure with any possible mutual influence.

This Technical Report may be used for the extension of the validity of type tests performed on one test object with a defined set of ratings to another switchgear assembly of the same family with a different set of ratings or different arrangements of components. It supports the selection of representative test objects composed of functional units of a family of switchgear and controlgear aimed at the optimization of type tests in order to perform a consistent conformity assessment.

This Technical Report utilises a combination of sound technical and physical principles, manufacturer and user experience and calculations to establish guidance for the extension of validity of type tests, covering various design and rating aspects.


Cross References:
IEC 60050-441:1984
IEC 60050-441:1984/AMD1:2000
IEC 62271-1:2007
IEC 62271-1:2007/AMD1:2011
IEC 62271-200:2011
IEC 62271-201:2014
IEC TR 60890
IEC 61117
IEC 60865-1
IEC TR 60865-2
CIGRE WG A3.24
IEC 60112
IEC TR 60943
IEC 60071-1:2006
IEC 60071-1:2006/AMD1:2010
IEC 60050-151:2001
IEC 60050-151:2001/AMD1:2013
IEC 60050-151:2001/AMD2:2014


All current amendments available at time of purchase are included with the purchase of this document.