High voltage load switch FN12-12D

Overview FN12-12D/630-20 indoor AC high voltage load switch (hereinafter referred to as FN12-12D load switch) is a three-phase high voltage switchgear with a rated voltage of 12KV and a rated frequency of 50Hz. It is used for switching load currents and no-load transformers. And the cable charging current, close the short-circuit current. Load switches equipped with grounding switches can withstand short-term current. FN-12 (R) D/100-31.5 type high voltage load switch-fuse combination electrical appliance (hereinafter referred to as FN12-12 (R) D combination electrical appliance) is used in combination with FN7-12D load switch and S□LAJ-12(XRNT□ -10) Indoor high-voltage switchgear combined with high-voltage current-limiting fuses. It can break any current up to the short-circuit current; the load switch breaks the working current, the fuse breaks the short-circuit current, and the joint breaks any current between the working current and the full short-circuit current. At the same time, the fuse breaks the load switch through its collision. brake. Scope of application FN12-12D/load switch FN12-12D combined electrical appliances are mainly used in three-phase ring network or terminal power supply in urban distribution stations and industrial electrical equipment for load control and short-circuit protection. Because the protective effect of combined electrical appliances on transformers and other electrical equipment is more reliable than using circuit breakers, it is especially suitable for ring networks, compared to radiation generation units and box-type substations. Product adoption standards a, GB3804-90 "3～65KV AC high voltage load switch" b. GBXXX-XX "AC high-voltage load switch-fuse combined electrical appliance" (equivalent to IEC420-1990) c, GB1995-89 "AC high voltage isolating switch and grounding switch"volume_upcontent_copyshare