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About This Item
Full Description
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 withIEC 62271-201:2007.
Document History
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IEC 62271-202 Ed. 3.0 b:2022
High-voltage switchgear and controlgear - Part 202: AC prefabricated substations for rated voltages above 1 kV and up to and including 52 kV- Most Recent
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IEC 62271-202 Ed. 2.0 b:2014
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High-voltage switchgear and controlgear - Part 202: High-voltage/ low-voltage prefabricated substation- Historical Version
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IEC 62271-202 Ed. 1.0 b:2006
High-voltage switchgear and controlgear - Part 202: High-voltage/low voltage prefabricated substation- Historical Version