Reasons and treatment methods of AC contactor is attracted unusual

Publish Time:2015-02-05 Author:admin Views:1

AC contactor is attracted is not normal, refers to the AC contactor is attached too slow, contact is not completely closed, core issue abnormal noise and other abnormal phenomena. Cause and treatment method of the AC contactor is attached not normal as follows:
1, because of the power supply voltage control circuit is less than 85% of rated voltage, the electromagnetic force electromagnetic coil power small, can not be quickly attracted to the static iron core moving core, causing the contactor is attracted and slow or pull not tight, at this time should be adjusted to the rated voltage of the power supply voltage control circuit.
Less than 2, the spring pressure, causing the contactor is attracted not normal; the spring reaction force is too large, resulting in attracting slow; contact overtravel spring pressure is too large, so that the iron core can not be completely closed; the spring pressure and release the pressure contact is too large, resulting in contact is not close completely. Processing method is to properly adjust the spring pressure, replace the spring when necessary.
3, as the gap between the static iron core is too large, the movable part is stuck, rust or deformation caused by the rotating shaft, the contactor is attracted not normal. When dealing with removable core hybrid checks, transfer of small gap, washing shaft and a supporting rod, replacement parts when necessary.
4, because of the long-term frequent collision unsmooth surface, core, and outward along the direction of thickness of laminated expansion, now available file trimming, replacing the core when necessary.
5, a short circuit ring fracture, causing the core issue abnormal sound. In this case, should be put on the same size of the short circuit ring.