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Kjz-1000/ 1140 Mine-Used Flameproof and I. S. Vacuum Feed Switch, Mobile Substations
(one) ApplicationKJZ-1000(800,630,500,400,200)/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 ......
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Product Description
(one) Application
KJZ-1000(800,630,500,400,200)/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
KJZ-1000(800,630,500,400,200)/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 Voltage | AC1140V,660V | ||
| Industrial Frequency Withstand Voltage | 4200V/1min | ||
| Rated Frequency | 50Hz | ||
| Rated Current | 1000A 800A | 630A 500A | 400A 200A |
| Ultimate Breaking Capacity | 30000A | 15000A | 7500A |
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