Precautions for operation of electric fusion welding machine

The insulation resistance between windings and between windings and casings of new or permanently unused electric welding machines is often greatly reduced due to moisture, which is prone to short circuit and grounding at the beginning of operation, resulting in equipment and personal accidents. Therefore, use a megger to check whether the insulation resistance is qualified before use. Before starting a new electric welding machine, check whether the contactor part of the electrical system is in good condition. If it is normal, start the test run under no load.
Only when it is proved that there is no potential electrical hazard, can the test run be carried out under load, and finally the normal operation can be put into operation. The DC welding machine shall rotate in the regular direction. For those with fans, pay attention to whether the fan rotates in the correct direction, and blow it out from above. To achieve the purpose of cooling the welding machine.