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Kjz-800/ 1140 Mine-Used Flameproof and I. S. Vacuum Feed Switch, Vacuum Power Distribution Device

China Kjz-800/1140 Mine-Used Flameproof and I. S. Vacuum Feed Switch, Vacuum Power Distribution Device, Find details about China Feeder Switch, Vacuum from Kjz-800/1140 Mine-Used Flameproof and I. S. Vacuum Feed Switch, Vacuum Power Distribution Device

Model NO.
Kjz-800/1140
HS Code
8537209000
Model NO.
Kjz-800/1140
HS Code
8537209000
(one) Application
KJZ-800/1140Mine-used Flameproof and I.S. Vacuum Feed Switch is suitable for underground coal mines with explosive gases such as methane. It can be used as the main switch or branch switch for the 3-phase neutral-point ungroundedpower supply system which is at 50 Hz, rated voltage 1140 V (660 V), rated current up to 1000 A. It also can be used for infrequent startup control of large-capacity motors. It can cut off the power supply automatically when any fault occurs such as overload, short circuit, phase loss or leakage. As a main switch, it has a 3-phase symmetrical leakage locking protection function. As a branch switch, it has selective leakage protection and leakage locking protection functions. It has over-current protection with inverse time characteristics, and it has large-current non-voltage release protection for proximal outlet short-circuit. It is a protection device suitable for wide use in the coal mine industry.
(two) Technical Parameters
 
 
Rated Working VoltageAC1140V,660V
Industrial Frequency Withstand Voltage4200V/1min
Rated Frequency50Hz
Rated Current1000A 800A630A 500A400A 200A
Ultimate Breaking Capacity30000A15000A7500A

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