VTP high-voltage indoor vacuum circuit breaker

In accordance with the standards:GB1984-2003,GB/T11022,DL/T403-2000,IEC62271-100, IEC56. Applications: electric network, electric power plant, metallurgy, Petrochemical, the municipal infrastructure construction(such as: airport, building, subway,etc.). Feature: Vacuum interrupter technology without arc-extinguishing medium and insulating medium;Main galvanic circle with fixed-enclosed pole solid insulation;Reliable spring or permanent magnetic actuator;Variety of secondary control diagrams could be chosen;Misoperation prevention interlock to ensure the safety of personnels and equipments.Passed the National High-voltage Electrical Appliances Quality Supervision and Inspection Center Type Tests.Technical parameters: No. NameSymbolParameter1 Rated voltage kV 12 2 Rated current A 630 3 Rated Frequency Hz 50 4 Rated short-time withstand current kA 20,25,31.5,40,50 5 Rated peak withstand current kA 50,63,80,100,125 6 Rated short-circuit making current kA 50,63,80,100,125 7 Rated short-circuit breaking current kA 20,25,31.5,40,50 8 Power frequency withstand voltage1min kV 42 9 Lightning impulse withstand voltage kV 75 10 Breaking time ms 20-50 11 Closing time ms 35-70