Mining Flameproof and Intrinsically Safe Type Multi-Loop High-Voltage Vacuum Electromagnetic Switch

QJZ3-2400/1140(660)-8ML  mine explosion-proof and intrinsically safe type multi-loop  vacuum electromagnetic starter , it is applicable to the mine with explosive gas and coal dust. In the circuit with AC 50Hz and rated voltage of AC 1140 (660) V, it can control and protect the starting and stopping of 8  or less three-phase squirrel cage asynchronous motors at the same time, and can change the phase sequence when stopping. It is especially suitable for centralized monitoring of mining, transportation, mining and other working faces with concentrated power load.

Mining explosion-proof and intrinsically safe type multi-loop high-voltage vacuum electromagnetic starter is suitable for coal mine AC 3300V, frequency 50Hz, three-phase neutral point unearthed power supply system, local or remote control of three-phase asynchronous electric drive, to realize the centralized control of shearer, scraper conveyor, crusher, transfer machine, pumping station and other equipment in comprehensive mechanized coal mining face.

Mining explosion-proof and intrinsically safe type multi-loop high-voltage vacuum electromagnetic starter is suitable for coal mine AC 3300V, frequency 50Hz, three-phase neutral point unearthed power supply system, local or remote control of three-phase asynchronous electric drive, to realize the centralized control of shearer, scraper conveyor, crusher, transfer machine, pumping station and other equipment in comprehensive mechanized coal mining face.

Mining explosion-proof and intrinsically safe type multi-loop high-voltage vacuum electromagnetic starter is suitable for coal mine AC 3300V, frequency 50Hz, three-phase neutral point unearthed power supply system, local or remote control of three-phase asynchronous electric drive, to realize the centralized control of shearer, scraper conveyor, crusher, transfer machine, pumping station and other equipment in comprehensive mechanized coal mining face.

It is suitable for communities, shopping malls, schools, supermarkets, substations, industrial enterprises and other power users, with Ac 50Hz, rated voltage 400V, 690V, rated current 1000 ~ 3150A power distribution system, used for power conversion, distribution and control device of the power, lighting and power distribution equipment. 

It is suitable for variable frequency asynchronous motor or ordinary asynchronous motor of AC 50Hz, motor power 11KW~1120KW, rated voltage 660V or 1140V to soft start, soft stop and operation process control under heavy load, its start, stop, process control curve can be set to “S” type curve, linear curve, function curve and other forms of curve.

This product is mainly used in explosive gas environments containing methane and coal dust mixtures in coal mines and other surrounding media. It is used for control, measurement, and protection in power supply systems with rated voltages of 10kV and 6kV, rated frequencies of 50Hz, and three-phase AC neutral points not directly grounded.

The mining flameproof permanent magnet synchronous frequency conversion motor is a high-efficiency and safety-driven device specifically designed for hazardous environments such as coal mines and petrochemical industries where flammable and explosive materials are present.