QJR-630(500、400、315、250、80、60)/1140(660) Mine explosion-proof and intrinsically safe vacuum AC soft starter
QJR series soft starter is a new technology product integrating light, machine and electricity. It can be used as heavy load soft starting of asynchronous motor of AC 1140V, 660V. It's widely used as soft start and soft stop in underground coal mine, open pit coal mine, metallurgical mine, port, coal preparation plant and other heavy load transportation equipment. It is the most ideal replacement products of the traditional triangle starter, reactor starterand selfdecompression starter.Automatic control of power supply equipment can be realized by using monitoring system in mine.
Square shell, quick opening structure and drawer core holder, beautiful look and easy to operate and maintain.
Adopt microcomputer integrated protection device based on single chip microcomputer technology, full Chinese LCD display and menu type operation, can amend fixed protection value without power failure and various kinds of operations.
It can display system voltage, three-phase current and other parameters in real time, as well as display equipment fault type, fault parameters, fault time, and has the function of fault memory and query.
Multiple soft start control mode: voltage mode, current limiting mode, torque mode, etc.
The starting current, voltage and time can be adjusted flexibly according to the load, thus the minimum current impulse and the optimal torque control characteristics can be obtained.
Free stopping and soft stopping and stopping time.
The soft starter can be operated by the bypass AC vacuum contactor after the soft starting process is finished.
It has many protection functions, such as overload, short circuit, leakage latch, undervoltage, broken phase, three-phase imbalance, temperature, overvoltage absorption and so on.
Equipped with standard RS485 communication interface, it is configured in mine monitoring system to realize 4 remote functions, namely telemetry, remote control, remote communication, remote adjustment. Can realize the functions of remote dividing, closing, remote reading of meter, thus to achieve unattended op
