塑料绝缘和橡皮绝缘电话软线 第4部分:橡皮绝缘电话软线
Plastie or rubber insulated telephone cords Part 4:Rubber insulated telephone cords
Plastie or rubber insulated telephone cords Part 4:Rubber insulated telephone cords
Power cables with cross-linked polyethylene insulation and their accessories forrated voltage of110 kV(Um=126 kV)-Part 3:Accessories
Power cables with cross-linked polyethylene insulation and their accessories forrated voltage of 110 kV(Um=126 kV)-Part 1:Test methods and requirements
Machine tool electric appliance reliability evaluation general principles
Circuit-breakers for overcurrent protection for household and similar installation-Part 3 :Circuit-breakers for d,c,operation
Electrical accessories-Circuit-breakers for overcurrent protection for household and similar installations-Part 2 :Circuit-breakers for AC and DC operation
Power transformers-Part 7:Loading guide fornoil-immersed power transformers
Power transformers Part 12:Loading guide for dry-type power transformers
Power transformers-Part 4:Guide to the lightning impulse andswitching impulse testing-Power transformers and reactors
Power transformers Part 5 : Ability to withstand short circuit