Analysis of failure factors of explosion-proof control box

The explosion-proof control box has the following factors:

Explosion-proof control box 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 being 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.

Environmental temperature impact on low-voltage electrical appliances We know that many low-voltage electrical appliances are mainly composed of fuses, AC contactors, residual current protection devices, capacitors and meters. However, these low-voltage electrical appliances have limited temperature conditions. If the operating temperature exceeds this range, failure will occur.

Due to improper selection of AC contactor capacity in manufacturing, AC contactors with the same capacity are installed for different outlet circuits, and the unbalanced three-phase load is not taken into consideration, and the current rating of some outlet contactors cannot be selected normally. On the basis of the model, an increase in the current level selection has led to the occurrence of AC contactor burnout during the summer hot season.

Explosion-proof seals used on the cover of the box are used for too long and are aging, affecting the sealing result.

The use of explosion-proof enclosures takes too long, and collisions or natural dropouts affect the anti-corrosion results.

Explosion-proof switch boxes and other explosion-proof cabinets do not open due to oxidation, resulting in oxidized results, more or less rust will appear on the explosion-proof surface! Causes the explosion-proof surface to be uneven and affects the explosion-proof results.