Terminal block fault prevention measures

Ensure that the screw bolts of each terminal are in good condition, and replace the screws with the buckle. The terminal with the crimping plate should ensure that the pressure plate and the wire nose (also called copper wire ear) are flat before the wiring, the surface of the pressure plate and the wire nose should be smooth, and the junction box and The lid is free of dust. After the shot, the metal dust in each part of the junction box should be cleaned with sandpaper and gasoline until the original color is found. The explosion-proof cover should be reset and sealed well, and the explosion-proof hole of the motor itself should be sealed.

When the cable is insulated, the internal copper wire can not be damaged, especially the root of the wire nose. Use 70mm2 closed wire nose, add appropriate copper wire filler, use crimping pliers to press the wire, press 2-3 according to the situation, each time pressing the line To ensure that the crimping pliers are pressed at the same angle and in the proper position, use high-pressure tape, heat-shrink tubing and plastic tape to insulate.

For copper terminals with a wire nose, the wire nose should be able to naturally be placed in the center of the upper and lower pressure plates without any direction of stress. When tightening the screws, ensure that the upper and lower pressure plates and the wire nose are parallel. To match the spring pad, the tightening torque of each screw should be appropriate and uniform, and ensure that the pressure plate can not be excessively deformed, the surface of the wire nose is in good contact with the surface of the upper and lower platens, the contact area is the largest, and the pressure is appropriate, and the cable is not in all directions. stress.
When the bottom corner of the motor is firm and does not move, check the high-voltage motor terminals every two weeks, check the wire head for cracks, loose screws, etc. If necessary, remove the wire ends and check that the wires are not connected.

When the fitter needs to move the main motor to replace the main pump, ensure that the motor moves the minimum distance in all directions. When installing the main pump and motor, the fitter must ensure that the pump and the motor are concentric, the handle pad is intact, the pick-up screw is matched and fastened, and the gap between the two handles is about 5mm. The screw at the bottom corner of the pump and the motor is firm, and the vibration of the pump is prevented as much as possible. The influence of the motor. After the fitter replaces the pump, the electronic group checks the terminals in the motor junction box, and the standard is processed when the wiring is not reached. During the operation, the fitter checks the vibration and sound of the pump every shift. The vibration of the pump itself increases beyond the normal range and should be processed in time.

Check the sound, vibration and bottom screw of each high-voltage motor bearing. If any abnormality is recorded or processed in time, if the motor vibration is increased, it should be notified to the fitter in time.

Post time: Jul-21-2018
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