Fn12-12 Series Indoor Use High Voltage Air Breaker Switch

Basic info. Certification:ISO9001 ; IEC Export Markets:Global Packaging: standard package or cilent's requirment Brand name: L&R or as per clients' requirements Main technical parameters: FN12-12 and FN12-12R is of three phases indoor use AC high voltage load switch for breaking and making the circuit of 50Hz, 12KV system under rated loading, closed loop current, no-loading transformer, cable charged current and short circuit current. The load switch equipped with earth switch can withstand short circuit current, and m-ainly used in power distribution substation and industrial electrical equipment where three phase closed loop circuit or bottom power supply system for control and protection. Standarda,GB3804-903~65KV AC H.V Load switchb,GBXXX-XXAC H.V load switch with fuse box(the same IEC420-1990)c,GB1995-89AC H.V isolate switch and earth switchNormal Serviec ConditionA,The ambient air temperatrue : Max:+40. Min:-25.B,The altitude ≤1000m.C,The relatire humidity of air Daily average ≤95% . Monthly average ≤90% D,The ambient air should not be obviously polluted by corrosivity or the flammability gas and geam.Etc. E,Without frequent shake. F,Enviroment degree : grade .NumberNameUnitFN12-12D/630FN12-12D(R)D/1001Rated voltageKV122Rated frequencyHz503Rated currentA6301004Lighting impulse resisting voltageKVTo ground.interphase 75 isolation break 8551min power frequency withstand voltageKVTo ground.interphase 42 isolation break 486Rated heat-stability currentKA20(4S)7Rated machine-stability currentKA508Rated closing current(peak)KA50509Rated short-circuit breaking current (prospective value)KA 31.510Max.critical breaking currentA2S fuse box characterisitic curve11Min.Breaking currentKA fuse box characterisitic curve12Rated transfer currentKA 1.513Max.breaking current(reference value)KA1.814Braking no-load transformer capcitykva125015Rated cable charging currentA1016Rated power load current breaking timestime≥10017Switch-off time of rated power load current switch on-and-offS >0.0618Rated transfer currentKA20(2S)20(2S)19Rated transfer currentKA505020Motor operating power valtageVpay 110,220 direct current Mechanical characteristic parameter NunberNameUnitFN12-12D/630FN12-120D(R)D/1001Machine contact qeneral travelmm200±8-22Interphase distance (before mechansim store energy)mm210±33Dynamic contact ultra travelmm40±24Auxiliary contact distancemm40±25Three-phase switch on-and-off synchroneitym/s2.8>2.87Switch-on speedm/s>3.88Distance between metal valueand conducting pipemm>1259Earth switch fracture distancemm>15010Main.loop resistanceμΩ