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In the following, we will summarize and report through the failures of the explosion-proof lighting power distribution boxes that customers often reflect. We hope to provide users with certain convenience in daily use:
1. Explosion-proof power distribution boxes and other explosion-proof enclosures will not be opened due to permanent flames, oxidation results, more or less rust will appear on the explosion-proof surface! Causes the explosion-proof surface to not be bent, affecting the explosion-proof result.
2. Influence of ambient temperature on low-voltage electrical appliances We know that many low-voltage electrical appliances are mainly composed of fuses, AC contactors, residual current action protectors, capacitors, and meters. These low-voltage electrical appliances have limited temperature conditions. If the operating temperature exceeds this range, it will cause a failure. 3. Since the AC contactor capacity is not properly selected at the time of manufacture, install AC contacts of the same capacity for different outlet circuits. Without considering the unbalanced condition of the three-phase load, but failing to increase the current level of part of the outlet contactor on the basis of the normal selection model and increasing the selection of one current level, resulting in the occurrence of AC contactor burnout during summer hot season operation. Case.
4. Explosion-proof seals used on the lid of the box are used for too long and are aging, affecting the sealing result.
5. Excessive use of explosion-proof enclosures takes a long time, and collisions or natural dropouts affect the anti-corrosion results.
6. Explosion-proof switchgear factories need urgent and large quantities of low-voltage electrical appliances. These many reasons make the manufacturer's requirements for product quality not strict, causing some products to fail shortly after they are put into operation. If some types of AC contactors were put into operation shortly after the distribution box was put into operation, they could not be operated because the contactor closing coil was burned out.
Marble Arts,Modern Fashion Marble,Marble Flower Vase,Marble Art Craft
Fuzhou HuaRen International Imp&Exp.Co,Ltd , https://www.huarenstone.com