Product Name: Outdoor Sf6 Gas Circuit Breaker Model NO.: GCB Certification: ISO9001-2000 Function: Overcurrent Protection Type: Circuit Breaker Poles Number: 3 Structure: Conventional Circuit Breaker Installation: Fixed Arc-extinguishing Medium: SF6 Speed: Normal Type Circuit Breaker Operation: Electric Type Breaking Capacity: High Voltage Circuit Breakers Trademark: Rockwill Transport Package: Wooden Packing Specification: IEC, GB Origin: Zhejiang, China HS Code: 85352100 Product Description Outdoor SF6 gas circuit breakerSummaryGCB medium voltage circuit breakers for outdoor installation use sulphur hexafluoride gas(SF6) to extinguish the electric arc and as the insulating medium.Breaking in SF6 gas takes place without current chopping or generation of over voltages.These characteristics guarantee a long electrical life for the circuit-breaker and limited dynamic, di-electric and thermal stresses on the installation.The GSH type of stored energy and free release mechanical operating mechanism allows opening and closing operations through local and remote control.The operating mechanism, the activating kinematics of the moving contacts and the anti-condensation heater are located inside a tight metal enclosure which also acts as the support for the poles.The above-mentioned structure is supported by a frame made of telescopic metal sections which allow the height of the circuit-breaker terminal to be adapted from 2800mm to 3700mm.The metal enclosure has IP54(*) degree of protection and is fitted with a tight door with an inspection window.The circuit-breaker is compact and ensures a high level of sturdiness and excellent mechanical reliability.The enclosure is made out of a steel plate with adequate surface protection by a special metalizing and painting process. The support structures are hot dip galvanized.Main technical dataCircuit-breaker on columnGCB-12/24GCB-36GCB-40standardsIEC 62271-100···Rated voltageUr(kV)12/243640.5Rated insulation voltageUs(kV)12/243640.5Withstand voltage at 50HzUd(1 min)( kV)70(dry)/60(wet)95(dry)/80(wet)95(dry)/80(wet)Impulse withstand voltageUp(kV)125/150200200Rated frequencyFr(kV)50-6050-6050-60Rated normal current(400C )Ir(A)125025001250250012502500Rated breaking capacityIsc(kA)25252525252531.531.531.531.531.531.5Rated short-timeIk(kA)252525252525Withstand current(3s)31.531.531.531.531.531.5Making capacityIp(kA)636363636363808080808080Operation sequence(O-0,3s-CO-15s-CO)···Opening time(ms)45+1045+1045+10Arcing time(ms)10-1510-1510-15Total breaking time(ms)55-6055-6055-60Closing time(ms)75+1075+1075+10Overall dimensionsOn frame3090-38403090-38403090-3840H(mm)L(mm)900900900P(mm)686686686Weight(kg)900900900SF6 gas absolute pressureRated service value(kPa)380380550Operating temperature(1)(ºC)-25…+40-25…+40-25…+40TropicalisationIEC:60068-2-30,721-2-1···Electromagnetic compatibilityIEC:60694,61000-6-2,61000-6-4···Solar radiation(W/m2)100010001000Presence of pollutionIEC 815-table 1Level IIILevel IIILevel IIICreepage distance(cm/KV)2.52.52.75Ice coating(mm)101010Wind speed(m/s)343434Earthquake resistance(g)0.30.30.3Static force on the terminalsLongitudinal(N)750750750Transversal(N)500500500Vertical(N)750750750(1)for lower operating temperatures, please consult us.