ZN12-12 series of indoor HV vacuum circuit breaker is three phase A.C.50 (60) Hz indoor high voltage distribution equipment with 12kV rated voltage and below. This kind of circuit breaker is characterized by simple construction, strong breaking capability, long life with complete operating functions and convenient maintenance. It is suitable for controlling and protecting transmission and distribution system such as power generation plant and substation, especially used in the fields where it is frequently operated.
This kind of vacuum circuit breaker can be used for fixed panels (XGN2 and GGIA), it also can be equipment with truck used for varies panels such as JYN2, KYN1 and KYN49) as well as used for reconstruction for old-fashioned oil switchgear.
1.The operating mechanism is introduced the technique of operating mechanism from Siemens 3AF vacuum circuit breaker, the operating mechanism is integrated with vacuum circuit breaker, with characteristics of short transmission routes, less chains and high transmission efficiency.
2. This operating mechanism is spring type, it can be operated by AC or DC, also can be operated by manual.
Applying ambient conditions
1.Ambient temperature: -10+40.
2.The height above sea level: ≤vfgtf 1000 m (Not including special requirements).
3. Relative humidity: the average humidity of a day should be no more than 95%;the average humidity of a month should be no more than 90%.
4. Saturated vapor pressure: the average pressure of a day should be no more than 2.2kPa; the average pressure of a month should be no more than 1.8Kpa.
5. Earthquake intensity: not exceed 8 degrees.
6. It should be installed in the places without fire, explosion, serious filth, and chemical erosion and violent
Main Technical Specification
Rated short circuit breaking current
25 31.5 40
Rated peak withstand current
63 80 100
Rated short-circuit duration
Rated power frequency tolerance
Between phases, phase to ground
Rated lightning impulse withstand voltage
Between phases, phase to ground
Rated operating sequence
Power source voltage of opening and closing circuit
Rated current of opening and closing coil
Rated breaking current of single capacitor bank
Rated breaking current of back to back capacitor bank
Electrical endurance class
Rated voltage of energy stored motor
Clearance between open contacts
Contact stroke of contacts
Out of simultaneity of CO operations of three poles
Contact bouncing duration at closing and operation
Average closing speed
Average opening speed
Main circuit resistance of each pole
Sales:Ms. Joyce Dong
Main Products:Other Mobile Phone Accessories
Business type:Manufacturer, Trading Company
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General Description ZN12-12 series of indoor HV vacuum circuit breaker is three phase A.C.50 (60) Hz indoor high voltage distribution equipment with 12kV rated voltage and below. This kind of c...