Electrical Faults Reasons of Mine Electric Locomotive

There are a lot of reasons cause Mine Electric Locomotive faults, among the reason, the Electrical Faults are very important to the performance of mine electric locomotives. And What causes Mine Electric Locomotive Electrical Faults?

1, mining electric locomotive starts too fast 

The board of the fixed potentiometer is loosened and the gap of the governor is large; the components of the governor pulse control board are faulty; and the short circuit of the magnetic winding of the motor machine occurs. 

2, mining electric locomotives can not start running 

Because some of the electrical circuit break the location of the motor car can not start running. The position of the open circuit is: the main circuit of the motor vehicle is broken: the track and wheel on the contact is not good, either the locomotive grounding line and the governor main body circuit; the controller needs to open the circuit: because the governor close The switch is not able to receive instructions; automatic switch off: because the contact contact loss, burning, wiring terminals fall off, the power wire break, this time despite the locomotive lighting is light, but the main controller handle speed range of stalls can not drive ; Pantograph of the circuit: the overhead line failed to contact with the pantograph carbon plate, either the terminal loose and the power cord break lead to no voltage electric locomotives, this time the motor is no light is off, the main controller Handle a series of speed stalls can not drive; main frame and potentiometer shaft stuck, over or off; motor external and internal cable disconnection. 

3, the closure of the controller, the automatic switch trip situation occurs 

After the controller is closed, the automatic switch is tripped, due to overcurrent at the ground and short circuit at some locations on the electrical circuit. Lead to ground and short-circuit position is: pulse control module module components short-circuit or breakdown caused; commutator contact ground lead to the replacement of the potentiometer when the 3 line and 1 line wiring is not correct cause; IGBT module unit element caused; electric locomotive brake resistance grounding; motor insulation aging grounding or electrical circuit grounding occurs over-current lead. 

4, automatic switch to close quickly after the trip 

The reason for this is that the main ground of the automatic switch is the grounding of the output power line, the grounding of the arc-sucking coil, and the grounding of the stationary contact. 

Therefore, how to operate and use the electric locomotive correctly and ensure its safe and stable operation; and how to judge quickly and accurately when the electric locomotive breaks down, and how to use the electric locomotive properly, Processing failure, reduce the impact on coal mine production to ensure safety in production is very important; when the failure occurs, can quickly and accurately find out the cause of the malfunction, troubleshooting, try to shorten the shutdown time, you can play on the safety of coal production Positive role. So in the maintenance of coal mine electric locomotive, the failure of the reasons are very many, some complex, some simple, some hidden, some obvious. It is of great practical significance to analyze the electrical faults and their causes of mine electric locomotives, which can be used to eliminate a series of faults accurately and promptly.