Product use

Suitable for underground coal mine in explosive environment, in rated frequency 50Hz, rated voltage 1140V, 660V power supply system, The three-phase AC asynchronous induction motor or two-speed motor of shearer, scraper conveyor, crusher, transfer machine, emulsion pump, spray pump, belt conveyor and other equipment is controlled separately, sequentially, single-machine two-speed control, two-machine two-speed control, etc., and the motor and power supply line are protected. Connected with KJ series underground coal mine power grid monitoring system, it can realize remote automatic control, monitoring and monitoring of power equipment, and realize modern management such as unattended substation.

Main feature

The starter adopts quick-open door, the contactor modular full package structure, independent secondary control junction box;

Using PLC as the main control unit, Chinese menu type man-machine interface, with strong anti-interference ability, reliable and accurate control, low failure rate. The output circuits are equipped with independent functions such as short circuit, overload, phase deficiency, over and under voltage, leakage lock, pilot protection, fault self-diagnosis, contactor bonding, fault memory, etc.

The isolation commutation switch adopts the roller type manual structure with obvious fracture, which provides safety guarantee for the next stage maintenance;

All analog signals are processed as digital signals, with strong anti-interference ability, simple wiring, large amount of information, reliable and accurate control characteristics;

With pilot, program, network (RS485 and Ethernet) control, flexible and convenient;

It can realize single-loop independent control, multi-loop program control, single-machine dual-speed dual-loop control and dual-machine dual-speed dual-loop control.

When a single two-speed or two-speed mode is running, the high and low speed participating loop can be freely selected in the 1-12 loop, each loop can participate in the two-speed loop to do high-speed or low-speed use, and the synchronization between low speed and low speed can be adjusted, and the synchronization between high speed and high-speed can be adjusted;

The starter has the function of leakage protection and branch selective leakage protection, which can effectively prevent large area power failure caused by leakage failure;

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