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Help CenterFZN21-12D Indoor AC High Voltage Vacuum Load Break Switches
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FZN21-12D indoor AC high-voltage vacuum load switch and FZN21-12D • R/125-31.5 indoor AC high-voltage vacuum load switch-fuse combination are the control and protection devices of three-phase AC 50Hz, 12kV power distribution system. The products are oil-free, non-toxic, free of fire and explosion hazards, and are widely used in factories, mining enterprises, urban building power distribution stations and other places. The latter is more reliable than the circuit breaker for the protection of electrical equipment such as transformers, and is especially suitable for ring network, double-radiation power supply unit and box-type substation.
The load switch shall be designed, manufactured and inspected in accordance with GB3804-2004 3~63kV AC High Voltage Load Switch;
The combination apparatus is designed, manufactured and inspected according to GB16926-2009 AC High Voltage Load Switch-Fuse Combination Apparatus and relevant standards.
Work conditions
Altitude ≤ 1000m
Ambient air temperature: upper limit+40 ℃, lower limit - 25 ℃ (storage and transportation allowed at - 30 ℃)
The daily average value of relative humidity of air is not more than 95%, and the monthly average value is not more than 90%
Seismic capacity: seismic intensity shall not exceed 8
The surrounding air shall not be obviously polluted by corrosive or combustible gases, water vapor, etc
No frequent severe vibration
The pollution level shall not exceed Level I
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