GB 7228-1987

Measuring and calculating method on efficiency of rectifiers and their consumers energy-conversion efficiency in electro-chemical industry

NORMA vydaná dňa 3.2.1987

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The information about the standard:

Designation standards: GB 7228-1987
Note: NEPLATNÁ
Publication date standards: 3.2.1987
Country: Chinese technical standard
Kategória: Technické normy GB