Effects of Electromagnetic Vibration on Explosion-Proof Motors
2026-02-12
Henan Nanyang Explosion-Proof Motor Co., Ltd. specializes in manufacturing various models of explosion-proof motors, high-voltage explosion-proof motors, and mining-use YBS, YBJ, YBBP series explosion-proof motors. For inquiries, please call 0394-2882888!
Various mechanical vibrations generated during the operation of explosion-proof motors can wear down and erode winding insulation. Among these, electromagnetic vibration poses the most critical threat to the insulation of the end windings and slot openings in explosion-proof motors. If the stator core press-fitting quality is subpar or the winding end binding process is poorly executed, the windings may shift within the slots. Interlayer spacers and temperature sensor spacers will also continuously move between upper and lower windings, causing wear on both layers and damaging the winding insulation. More critically, during operation, the current flowing through the conductors generates double electromagnetic vibration forces. This not only causes vibration in the insulation layers between the windings and core, as well as the spacer blocks at the winding ends, leading to surface insulation wear, but also generate friction vibrations between conductors and insulation, as well as between conductor turns and strands. This leads to loosening between turns and strands, causing issues like short circuits and broken wires. Additionally, short-circuit locations create extra losses, causing localized temperature spikes in the winding. This reduces insulation strength and results in insulation breakdown. Therefore, electromagnetic vibration is the primary cause of winding insulation failure.
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Nanyang Explosion-Proof is a specialized manufacturer of explosion-proof motors and high-efficiency motors integrating design, production, sales, and service.
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