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Coal Mine Low Voltage Vacuum Electromagnetic Starter Switch, Direct Starter
(one) ApplicationQJZ-400(315)/1140(660) Mine-used Flameproof and Vacuum Electromagnetic Starter is suitable for underground coal mines with explosive gas such as methane. With the rated voltage 660V,1140 V, rated current up to 400A or 315A, 50 Hz, the starter can be used to directly or remotely con......
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Product Description
(one) Application
QJZ-400(315)/1140(660) Mine-used Flameproof and Vacuum Electromagnetic Starter is suitable for underground coal mines with explosive gas such as methane. With the rated voltage 660V,1140 V, rated current up to 400A or 315A, 50 Hz, the starter can be used to directly or remotely control the 3-phase squirrel-cage motor and can do commutation when the motor stops. It has multiple functions such as leakage locking, over-current, phase loss, under voltage, air and electricity interlocking, program-controlled protection and communication interface.
(two) Technical Parameters
| Rated Voltage | 660V | 1140V |
| Maximum Power of Control Motor | 260kW(315A) | 450kW(315A) |
| 340 kW (400A) | 590kW(400A) | |
| Rated Frequency | 50Hz | |
| Rated Current | 315A, 400A | |
| Ultimate Breaking Capacity | 4500A | |
| Breaking Capacity of Isolation Switch | 945A, 1200A | |
| Electncal Life | 30000times | |
| Mechanical Life | 1000000times | |
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