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sklademVydáno: 2018-12-19
BS IEC 60076-21:2018
Power transformers Standard requirements, terminology, and test code for step-voltage regulators
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Označení normy: | BS IEC 60076-21:2018 |
Počet stran: | 148 |
Vydáno: | 2018-12-19 |
ISBN: | 978 0 580 93227 4 |
Status: | Standard |
DESCRIPTION
BS IEC 60076-21:2018
This standard BS IEC 60076-21:2018 Power transformers is classified in these ICS categories:
- 29.180 Transformers. Reactors
a) updated list of normative and bibliography IEC and IEEE references and their associated text;
b) updated tables of preferred ratings for inclusion of maximum system voltage ( U m), nominal system voltage and rated voltage ( U r);
c) inclusion of tables for optional fan-cooled ratings, external dielectric clearances and sound pressure levels;
d) revision of short-circuit requirements for distribution and substation voltage regulators;
e) inclusion of an universal interface between control enclosure and apparatus;
f) inclusion of tap-changer routine and type tests;
g) inclusion of audible sound pressure emissions test procedures;
h) inclusion of tank enclosure integrity type test procedures;
i) update of control environmental IEC reference test standard.
Keywords: step-voltage regulators