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Help Center[hunan Chuang'an Explosion-proof] Qjz2-□/1140(660) L-□ Mine-used Flameproof and Intrinsically Safe Multi-circuit Vacuum Electromagnetic Starter
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QJZ2-□/1140(660) L
Mine-used flameproof and intrinsically safe multi-circuit vacuum electromagnetic starter (quick connection)
Purpose and scope of useApplication and range of application
When the equipment encounters faults such as overload, short - circuit, over - voltage, under - voltage, etc., it can automatically cut off the power supply and display the fault signal. The switch has the leakage lockout and test functions before closing, and can display the current and voltage values of each branch during operation;It has protections such as under - voltage, overload, phase loss, short - circuit, and leakage lockout. It can achieve single - unit control, single - unit two - speed control, and dual - unit two - speed control for the controlled motor, and change the electrical phase sequence through the isolating switch when stopping. It can start and stop the motors of shearers, scraper conveyors, belt conveyors (main motors, oil pump motors, cooling fan motors, belt tensioning motors, belt coiling motors, crushers, transfer conveyors, etc.), and protect the motors and power supply lines to achieve the purpose of automatic control of power supply equipment in mining areas or other working faces.
Product featuresProduct features
The protection and control system adopts an advanced programmable logic controller(PLC),With high-precision data processing and advanced protection algorithms, it features high protection accuracy and fast response speed. It can perform functions such as leakage blocking, overload, short circuit, phase loss, undervoltage, and overvoltage protection. It has advantages such as high intelligence purity, stable performance, diverse control methods, and reliable operation;
It usesa 7-inch industrial control screen for display; it can display the working status, parameters, and fault types of the switch, with a user-friendly interface; it has good man-machine dialogue function, which can greatly improve the efficiency of fault diagnosis and troubleshooting;
The switch displays the system voltage, three-phase current of each circuit, and the on/off status of the switch in real-time;
Allanalog signals are processed into digital signals, with advantages such as strong anti-interference ability, simple wiring, large amount of information, and reliable control;
It can realize local, remote control, and two-speed control. The control methods are flexible and diverse, and can also be customized according to the specific requirements of users;
It hascomplete self-checking and self-diagnosis functions, which can conveniently check the normal operation of the protection and control system, as well as the communication function with the host computer;
It hasa 4.0KW(127V)lighting comprehensive protection device circuit.
Remotecontrol uses intrinsic safety control. The intrinsic safety parameters are: voltage21.8V(AC),current78mA(AC).
It hasRS485Communication interface.
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