FN12-12R / T125-31.5 indoor air pressure within the high pressure load switch

Within Overview FKN11-12 / 630-20 type indoor AC high voltage load switch (hereinafter referred to as FN11-12D load switch) is rated voltage of 12kV, rated frequency 50Hz three-phase high pressure at the beginning of equipment for the division and the load current, loop current , no-load transformer and cable charging current, closing short-circuit current. Equipped with grounding switch load switch that can withstand short-circuit current. FKRN11-12D / 100-31.5 AC high voltage load at the beginning of fuse combination (hereinafter referred to as FN11-12 (R) D composite electric equipment), and S is FKNRN11-12D load switch port LAJ (XRNT mouth -10) high current-limiting Cutouts together the indoor high voltage switchgear. It can start breaking up any current short-circuit current; breaking work load switch current, fuse breaking short-circuit current, joint breaking any current and total short-circuit current between the fuse by its striking while the load switch points gate. Range FKN11-12D / load switch FKRN11-12D combination of electrical main three-phase power supply ring network city distribution and industrial equipment for load control and short circuit protection purposes. Since the protective effect of the combination of electrical transformers and other electrical equipment to be more reliable than circuit breakers, especially for the ring, the radiation-generation unit and the box-type substation ratio. Normal working environment with ambient air temperature: up to + 40 ℃, lower limit of -25 ℃; altitude does not exceed 1000M; relative humidity, on average less than 95%, on average less than 90%; ambient air should not corrosive or significant pollution flammable gases and water vapor the like; no regular vigorous exercise; resistant to pollution class: Ⅱ grade; if conditions exceed the above requirements, in consultation with the manufacturer to determine the user type Meaning