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57 step planetary reducer motor winding fault inspection

2019-04-12 14:30:00
的绕组接地是指绕组与铁芯或与机壳绝缘破坏而造成的接地,若出现电机绕组故障,应检查: The winding grounding of the 57 step planetary reducer refers to the grounding caused by the insulation damage between the winding and the iron core or the casing. If the motor winding fails, you should check:
1. Observation. Visually inspect the ends of the windings and the insulation in the cable trunk for damage and black marks. If damage or black marks are found, this is the ground point;
2. Multimeter inspection method. Use a multimeter to check the low resistance. If the reading is small, it is grounded.
3. Megohmmeter method. According to different levels, different megohmmeters are used to measure the insulation resistance of each group of resistances. If the reading is zero, it means that the winding is grounded, but the motor insulation is wet or breakdown due to accidents. It needs to be determined based on experience. The pointer swings irregularly at "0", it can be considered that it has a certain resistance value;
4. Test the lamp method. If the test light is on, the winding is grounded. If spark or smoke is found somewhere, it is the winding ground fault. If the light is on, the insulation has ground breakdown. If the light does not turn on, but a spark appears when the test rod is grounded, it means that the winding has not broken down, but it is seriously wet. You can also use hardwood to tap on the edge of the shell of the shell. When you hit a certain place and wait for a while, it means that the current is on and off, and that place is the ground point.
The method of 57 step planetary reducer is to divide the grounded one-phase winding into two halves, and so on, and finally find the ground point.

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