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HD 21 applies to rigid and flexible cables with insulation and sheath, if any, based on polivinyl chloride, of rated voltages Uo/U up to and including 450/750 V used in power installations of nominal voltage not exceeding 450/750 V a.c. This Part 2 specifies the methods of carrying out the tests specified in HD 21 in conjunction with HD 405.1 and EN 60811. General Requirements are specified in Part 1 of the HD 21. Particular types of cable are specified in Part 3 onwards of HD 21, and are hereafter referred to as "the particular specifications".
Reģistrācijas numurs (WIID)
56021
Darbības sfēra
HD 21 applies to rigid and flexible cables with insulation and sheath, if any, based on polivinyl chloride, of rated voltages Uo/U up to and including 450/750 V used in power installations of nominal voltage not exceeding 450/750 V a.c. This Part 2 specifies the methods of carrying out the tests specified in HD 21 in conjunction with HD 405.1 and EN 60811. General Requirements are specified in Part 1 of the HD 21. Particular types of cable are specified in Part 3 onwards of HD 21, and are hereafter referred to as "the particular specifications".
