This standard specifies the types,the basic parameters and dimensions of three-phase plugs and socket-outlets for household and similar purposes.
This standard applies to three-phase plugs and three-phase fixed or portable socket-outlets for a.c.50 Hz only,with a rated voltage of 440 V and a rated current not exceeding 32 A,intended for household and similar purposes.
This standard does not exclude the use of three-phase plugs and socket-outlets on building sites,or for agricultural and commercial applications.
定价: 372元 / 折扣价: 317 元 加购物车
This standard specifies basic testing method for relaying protection and security automatic equipment.
This standard is applicable to the test of allornothing relays, measuring relays, protection equipment, security automatic equipment (protection equipment and security automatic equipment hereinafter referred to as equipment) in power system secondary circuit and their interface equipment.
定价: 1176元 / 折扣价: 1000 元 加购物车