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ZN28-12K Fixed Type of Indoor High Voltage Vacuum Circuit Breaker
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● General Description
ZN28-12K fixed type indoor HV vacuum breaker is used for many kinds of switchgear like XGN2-12(Z).It is widely used for 12kV voltage systems which is accordance with GB1984-2003 standards
1.This vacuum circuit breaker adopts air insulation,it can meet air distance and creepage under normal run condition.
2.The operating mechanism can use CD17 or CT19 type mechanism,the outlet curve has good adaptation for the requirements of vacuum interrupters.It has high reliable with characteristics of long life and easy maintenance.
● Applying ambient conditions
2.The height above sea level:≤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.
● Main Technical Specification
● Overall outline drawing
● Following information is required for order
Full type name, rated current,rated short-circuit breaking current,distance between phases.
Operating mechanism type , power supply voltage and tripping device type and quantity.
Name and quantity of spare parts.
For special requirements,please consult with manufacturer.
● Typical wiring diagram of the second principle
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