Jining Dongda Mechanical and Electrical Equipment Co., Ltd.

The series of mining flameproof and intrinsically safe vacuum electromagnetic starters are mainly suitable for starting and stopping mine flameproof three-phase squirrel cage asynchronous motors in coal mines for remote or direct control of AC and voltage. And when stopped, the control power supply of the motor can be commutated.
Product details
>Introduction to vacuum electromagnetic starters
The series of mining explosion-proof and intrinsically safe vacuum electromagnetic starters are mainly suitable for underground coal mines, as long-distance or direct control of AC, voltage to Starting and stopping of mine flameproof three-phase squirrel cage asynchronous motor. And when stopped, the control power supply of the motor can be commutated. The starter has overload, phase failure, short circuit, leakage lockout and overvoltage absorption protection functions. The starter can realize single machine remote control, local control, double machine interlocking control and positive sequence starting of multiple starters.
>Vacuum electromagnetic starter structure
The square shell is composed of a square flameproof shell mounted on a skid-shaped chassis, body assembly, front door and electrical device assembly. Including AC vacuum contactor, current transformer, resistance-capacitance absorption device, control transformer, fuse, isolation reversing switch, emergency stop button, fuse, intrinsically safe control relay, intermediate relay, protector, toggle switch, start button , a mechanical locking device between the stop button and the emergency stop button. The wiring cavity is equipped with main circuit incoming terminals, outgoing terminals, control line terminal blocks, start button, stop and reset button, and signal display window assembly.
The round shell consists of a vacuum contactor, a comprehensive motor protector, a transformer, a resistance-capacitance absorption device, a commutation isolation switch, a type fuse, and an intermediate relay
>Technical parameters of vacuum electromagnetic starter
Rated Voltage,,
Rated current,,,,
Control motor power
Remote control cable length
>Physical picture of vacuum electromagnetic starter
>Vacuum AC soft starter< br/> Series of mining flameproof and intrinsically safe AC vacuum soft starters are suitable for soft starting and soft stopping of three-phase asynchronous motors in coal mines with rated voltage up to and below, rated frequency and rated current up to and below. Three-phase asynchronous motors with local or remote and online starting control.
Product details
>Introduction to vacuum AC soft starters
Series of mining explosion-proof and intrinsically safe AC vacuum soft starters, suitable for underground coal mines, at rated voltages up to and below, at rated frequencies , soft start and soft stop of three-phase asynchronous motors with rated current up to and below, three-phase asynchronous motors that can be started locally or remotely and online. Its core uses our advanced fully digital transmission controller of single-chip microcomputer. The preset curve performs closed-loop automatic control of the motor. It has various starting modes such as current limit starting, ramp voltage starting, torque control, torque plus kick starting, etc. It has multiple protection functions such as overload, short circuit, phase failure, leakage lockout, undervoltage, overvoltage, temperature protection, belt interlocking protection, etc.
>Technical parameters of vacuum AC soft starter
Rated voltage\
Rated current\\\\
Control motor power
Control circuit voltage
Limit breaking capacity
>Physical picture of vacuum AC soft starter
Shandong Kuangan Mechanical and Electrical Co., Ltd., Jining Dongda Mechanical and Electrical Co., Ltd., Jining Dongda Electric Co., Ltd., Jining Dongda Rock Drilling Equipment Co., Ltd., a subsidiary of Shandong Dongda Group Company
The company now has ten series and more than 70 varieties of products. The main products include belt feeders, reciprocating feeders, wet concrete sprayers, roller tank ears, broken belt catchers for belt conveyors, air pressure self-rescue devices, pneumatic car arresters, pneumatic horizontal brakes, pneumatic Vehicle blocking beam, inclined lane anti-car racing device (one slope and three gears), belt conveyor belt automatic deviation correction device, vertical shaft skip quantitative bucket loading equipment, pressureless damper, composite wear-resistant steel plate, pin tooth operation complete set of equipment, communications Sound and light annunciator, verbal sound and light alarm
, belt conveyor comprehensive protection device, mining damper automatic control device, mining switch control device, mining automatic water sprinkling and dust reduction device, mining sports car protection device mining rock drill Mining switches, mining electrical appliances, etc. Among them, there are many products that have obtained national patents, and they have obtained patent funds from the Municipal Science and Technology Commission and the District Committee, and three scientific research projects have produced huge benefits.
The company is willing to pursue zero-defect product quality with high-quality and advanced products, perfect after-sales service, and the business philosophy that customers are always God. We sincerely invite new and old customers to visit us for guidance, negotiate cooperation, and create a win-win situation.
Shandong Kuangan Mechanical and Electrical Co., Ltd., Jining Dongda Mechanical and Electrical Co., Ltd., Jining Dongda Electric Co., Ltd. and Jining Dongda Rock Drilling Equipment Co., Ltd. are subsidiaries of Shandong Dongda Group
The company now has ten major series , more than seventy varieties of products. The main products include belt feeders, reciprocating feeders, wet concrete sprayers, roller tank ears, broken belt catchers for belt conveyors, air pressure self-rescue devices, pneumatic car arresters, pneumatic horizontal brakes, pneumatic Vehicle blocking beam, inclined lane anti-car racing device (one slope and three gears), belt conveyor belt automatic deviation correction device, vertical shaft skip quantitative bucket loading equipment, pressureless damper, composite wear-resistant steel plate, pin tooth operation complete set of equipment, communications Sound and light annunciator, verbal sound and light alarm
, belt conveyor comprehensive protection device, mining damper automatic control device, mining switch control device, mining automatic water sprinkling and dust reduction device, mining sports car protection device mining rock drill Mining switches, mining electrical appliances, etc. Among them, there are many products that have obtained national patents, and they have obtained patent funds from the Municipal Science and Technology Commission and the District Committee, and three scientific research projects have produced huge benefits.
The company is willing to pursue zero-defect product quality with high-quality and advanced products, perfect after-sales service, and the business philosophy that customers are always God. We sincerely invite new and old customers to visit us for guidance, negotiate cooperation, and create a win-win situation.
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