This series starter is applicable in underground coal mines with explosive and dangerous gas(methane)and coal dust, it is used to control various coal-mining machine, drag conveyerand other equipped sets of electric control equipment in working field of general mining. Itcan directly realize control of start, stop, reversal and switching over with double speed tofour sets of AC three-phase inductive motor with rated current of 400(315,200)A or two setsof AC two-winding and two-speed motor, and it can also protect the motor and the circuit.The product owns advantages of high reliability and simple installation, operation andmaintenance.
Blue screen real-time English display for voltage, current, switching on and off and faultstate of each loop.
Highly lumped control system of protector reduces fault happening which happenedoften in the past due to multi-protectors for combined vacuum electromagnetic starter,and it also obviously reduces the numbers of intermediate relay and time relay,reducing each kind of fault happening of control system.
Standard RS485/232 communication interface.
Multiple protective functions for overload, short circuit, under voltage, over voltage,loss of phase, leakage lockout, phase imbalance etc.
Four-key type adjusting menu is easy for operation.
Intelligent man-machine conversation function can store circuit, under voltage, overvoltage, loss of phase, leakage lockout, phase unbalance etc. Memory function for fault.
The intrinsically safe control system can realize long distance control conveniently.It can make program me control of single set, sequential control, combined control,double speed double loop. During single set control, each loop operates separatelywithout interference, and there are separate current collection system and electricleakage check system. Program me control of the start delay and feedback delay timeof each set during sequential control and combined control is adjustable. For doublespeed and double speed double loop, it can conveniently set arc-extinguishing timebetween low and high speed, double loop start delay time and low-high speedswitching over time, and it can also set time, current, current time and manual switchingover mode to meet different requirements of users. When it needs to jog for chaining ofdrag conveyer, it can easily jog any loop of low or high speed motor.