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Coal Mine Explosion-Proof Vacuum Feeder Switch, Vacuum Power Distribution Device

China Coal Mine Explosion-Proof Vacuum Feeder Switch, Vacuum Power Distribution Device, Find details about China Distribution Equipment, Vacuum Distribution Equipment from Coal Mine Explosion-Proof Vacuum Feeder Switch, Vacuum Power Distribution Device

Model NO.
KJZ-630/1140(660)
HS Code
8537209000
Model NO.
KJZ-630/1140(660)
HS Code
8537209000
(one) Application
KJZ-630/1140(660) Mine-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 Current 630A  
Ultimate Breaking Capacity 15000A 

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