Product use

Suitable for coal mine in explosive environment, in rated frequency 50Hz, rated voltage 1140V, 660V, rated current up to 120A and below the power supply system, directly or remotely to three-phase AC asynchronous motor or AC double-winding two-speed motor to start, stop, forward and reverse rotation, two-speed switching; In addition, it can automatically switch the main and backup fans in case of failure or power failure, and protect the power supply line of the motor. The product is aimed at the anti-rotating fan or one-way machine used in the coal mine to realize the dual fan and dual power supply on the mining face, and the fan automatic switching device mainly for the fan. It adopts dual intelligent comprehensive protection and control. Because the electromagnetic starter is designed as an integrated two independent flasproof boxes, it can realize non-stop maintenance or multi-machine joint control.

Main feature

The starter adopts quick-opening and full package pull-out structure of contactor; Modular, universal, interchangeability, convenient and efficient disassembly, easy to use and maintain; Small size, easy to move;

Two independent power supplies, two sets of independent flameproof chambers, - side maintenance, the other side can work normally;

The main and standby fans use dual power supply and double circuit power supply. When the main power supply or the main fan fails, it can automatically switch to the standby fan to ensure uninterrupted ventilation in the coal mine.

The system adopts Siemens PLC for protection and control, and the main machine and the standby machine each have two sets of PLC to realize dual hot backup.

The integrated protector adopts advanced microprocessor and large-capacity new chip, with high-precision data processing and advanced protection algorithm, high protection accuracy and fast response speed;

With short circuit, overload, overvoltage, undervoltage, three-phase imbalance, phase break, leakage block, wind power block, gas block and other protection functions;

All Chinese, LCD real-time display system three-phase voltage, three-phase current, power factor, active power, reactive power, electrical degree, insulation resistance, switching state, fault information and other parameters; Drop-down menu, without opening the door can be modified parameter setting;

RS485, CAN, Ethernet interface, 4G/5G/WIFI can be configured to communicate with the coal mine power grid monitoring system, with telemetry, remote control, remote control, remote message, remote viewing and other functions to achieve unattended substation.

Main technical parameters