High-voltage switchgear and controlgear - Part 202: High-voltage/ low-voltage prefabricated substation
a) regarding temperature-rise test an alternative method for liquid filled transformers is (re)introduced and the temperature-rise test method for dry-type transformers is specified more precisely;
b) testing procedure for short time and peak withstand current tests are specified more precisely;
c) assessment of electromagnetic fields is considered including a type test (optional) according IEC/TR 62271-208:2009;
d) influence of the product on the environment is considered (Clause 12);
e) internal arc test requirements have been adapted to IEC 62271-200:2011 and requirements for the assessment of pressure relief volumes below the floor / ground has been assigned;
f) the method for defining the load factor in an enclosure for liquid filled transformers is extended with different temperature rises for the transformer outside the enclosure (Annex DD);
g) for the calculation of the load factor of dry-type transformers in an enclosure the insulation systems according to IEC 60076-1:2011, Tables B.1 and B.2 are worked out in detail.
This publication is to be read in conjunction with IEC 62271-201:2007. The contents of the corrigendum of April 2015 have been included in this copy.
|Publication type||International Standard|
|Available language(s)||English/French, Spanish|
|TC/SC||TC 17/SC 17C - Assembliesrss|
|ICS||29.130.10 - High voltage switchgear and controlgear|
|File size||2635 KB|
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