ZN85-40.5 Truck Type Indoor High voltage Vacuum Ci

ZN85-40.5/T type indoor high voltage indoor vacuum circuit-breaker is used for switchgear KYN61-40.5(Z), it is most new type of power supply and distribution equipment. This product is accordance with GB1984-2003 stand. This series include: Vacuum circuit breaker truck, isolation truck and fuse truck. Structural characteristics: 1. This vacuum circuit breaker adopts compound insulation; it can meet air distance and creepage under normal run condition, and it effectively reduces the dimension of VCB, the overall arrangement is reasonable and simple, with aesthetic appearance.2. The operating mechanism is especially newly designed for this VCB; the outlet curve has good adaptation with requirements of vacuum interrupters. It has high reliable with characteristics of long life and easy maintenance and free-maintenance for operating mechanism.3. This truck adopts screw rod nut push-in mechanism which can realize easy pushing-in or pushing-out of panel; compulsive mechanical interlock way is adopted; meet the Five Preventions function; suitable for varies site and the working sites which have rigorous run condition.Main Technical SpecificationS.NNameUnitData1Rated voltage kV40.52Rated frequency Hz50/603Rated current A125016001250160020004Rated short circuit breaking current kA 25 31.55Rated peak withstand current kA 63 806Rated short-circuit duration S47Rated power frequency withstand voltage Between phases, phase to ground kV95/1minBetween gaps 8Rated lightning impulse withstand voltage Between phases, phase to ground kV185Between gaps 9Rated operating sequence 0-0.3s-CO-180s-CO10Power source voltage of opening and closing circuit V∼220/110;-220/11011Rated breaking current of single capacitor bank A63012Rated breaking current of back to back capacitor bank A40013Electrical endurance class ClassE220cycles14Mechanical endurance CycleclassM11000015Operating mechanism type 3AV16Clearance between open contacts mm22 217Contact stroke of contacts mm7.5 1.518Out of simultaneity of CO operations of three poles ms219Contact bouncing duration at closing operation ms320Closing time ms50∼10021Opening time ms30∼6022Average closing speed m/s0.65 0.1523Average opening speed m/s1.8 0.224Main circuit resistance of each pole 60