withdrawable Indoor HV Vacuum Circuit Breaker

ZN23-40.5C series indoor high voltage vacuum circuit breaker is used for many kinds of switchgears like JYN1-35 and GBC-35 etc. It is widely used for 40.5kV voltage systems which is accordance with GB1984-2003 standards. This series of VCB include: Vacuum circuit breaker truck, isolating truck and PT truck. Structural characteristics: 1. This vacuum circuit breaker adopts air insulation; it can meet air distance and creepage under normal run condition. 2. The operating mechanism use CT19N type mechanism, 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. Easy pushing-in or pushing-out of panel for the truck; 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 Specification S.N NameUnitData1Rated voltage kV40.52Rated frequency Hz50/603Rated current A125016001250160020004Rated short circuit breaking current kA2531.55Rated peak withstand current kA63806Rated short-circuit duration S47Rated power frequency withstand voltage Between phases, phase to ground kV95/1minBetween gaps kV8Rated lightning impulse withstand voltage Between phases ,phase to ground kV185Between gaps 9Rated operating sequence 0-0.5-CO-180s-CO10Power source voltage of opening and closing circuit V220/110;-220/11011Rated breaking current of single capacitor bank A63012Rated breaking current of back to back capacitor bank A40013Electrical endurance class ClassE120cycles14Mechanical endurance CycleclassM11000015Operating mechanism type CT19N16Clearance between open contacts mm22 217Contact stroke of contacts mm6 118Out of simultaneity of CO operations of three poles ms219Contact bouncing duration at closing operation ms320Closing time ms10021Opening time ms6022Average closing speed m/s0.6 0.223Average opening speed m/s1.6 0.324Main circuit resistance of each pole 80