vacuum interrupter for load breaker switch

ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS1.Rated frequency50/60Hz2.Rated Voltage36kV,r.m.s3.Rated short-time power-frequency withstand voltage (1 min)70kV,r.m.s4.Rated lightning impulse withstand voltage170kV,Peak5.Rated Current630A6.Maximum Contact Resistance at Minimum Closing Force≤35Micro ohms7.Rated short-time withstand current16kA,r.m.s8.Rated duration of short-circuit4s9.Rated peak withstand current40kA,r.m.s10.Rated short-circuit making Current40kA,r.m.s11.Rated active load breaking current630A12.Rated closed-loop breaking current630A13.Rated capacity of no-load transformer1250kVA14.Rated cable-charging breaking current10A15.*Rated breaking current of single capacitor bank400A16.*Rated breaking current of back-to-back capacitor bank400AMECHANICAL DATA1.Interrupter Weight(Approx.)2.26kg2.Weight of movable parts0.98kg3.Closing force due to bellow and atmosphere70±30N4.Force required to hold contacts open at full stroke145±50NMECHANICAL REQUIREMENTS(REF. LBS)1.Clearance between open contacts14±1mm2.Average opening speed(average of first 75% of contact gap)1.35±0.2m/s3.Average closing speed(average of last 30% of contact gap)0.8±0.2m/s4.Rated added external contact final force1000±100N5.Added external contact force at contact touch point750±80N6.Contact bouncing duration at closing operation≤2ms7.Closing and Opening non-simultaneity of three-phase Contacts≤2ms8.Maximum Rebound during opening≤2msLIFE1.Storage life20years2.Mechanical endurance10000Operations3.Contacts limit erosion3mm1.Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-200 and JB 8738-2008. 2.* Rated Characteristics to be given on request