What to do if the interior of the explosion-proof distribution box suddenly heats up

All electrical products must be driven by electrical energy, as are explosion-proof boxes. However, electrical energy is mainly converted into thermal energy to generate power to drive electrical equipment. Heating of electrical equipment is a major potential threat to the safe operation of equipment. If it is not discovered and handled in time, when the heating time is long or serious, it may cause the equipment The burning or damage of the connection point is very close to or causes the accident. How much does the price of the explosion-proof operation column determine whether the product quality is correct? So how to do a good job to ensure the best heat dissipation effect? Therefore, a correct solution to the problem of heat dissipation, overheating and heat generation of the explosion-proof box is the first prerequisite for ensuring the safe operation of the explosion-proof box.

3. Do a good job of tightening and checking the electrical power supply connectors. Electrical connectors mainly include motor wiring, upper and lower wiring of circuit breakers in high-voltage cabinets, wiring at the isolation knife gate, wiring of switches, circuit breakers, contactors, etc. in low-voltage cabinets. The tightening of these electrical connectors and the safe operation of electrical appliances Closely related. It is well known that there are phenomena of thermal expansion and contraction in electrical connectors. Due to changes in temperature, there will be heating points, loose fasteners, and poor contact of the connectors, which has become a "blocker" for safe and stable operation of electrical appliances. Secondly, the daily inspection of electrical equipment connectors is also very necessary. Check and fasten the main connectors during reverse parking, dismantle the crimped parts of the connectors to check whether there is an oxide layer, and find that the oxide layer should be polished in time If the burnt contacts or silver contacts are worn or exposed for more than one third, they should be replaced.

Second, strengthen patrol inspection, do electrical temperature measurement, and discover potential hidden dangers in time. Constrain the inspection staff, which includes inspection time, content, records, frequency, etc. Scientifically and reasonably arrange the inspection time and frequency of electrical management, electrical operation, and electrical maintenance personnel, and minimize the inspection blind area; the inspection personnel must be responsible for the integrity of all electrical equipment and accessories and check whether the backup machine is in good condition Normal, pay attention to whether each motor, switch, cable, temperature, sound, voltage, current, is normal, and establish a temperature measurement record in the power distribution room, measure the temperature of the electrical appliances within the range of each branch and make related records, and find problems It is necessary to report and process in a timely manner in order to effectively ensure the safe and stable operation of electrical appliances.

Third, do a good job cleaning the motor and power supply cabinet. Hot and humid weather is a threat to the stable operation of electrical appliances. There is more dust on electrical equipment. Power supply lines and power supply equipment will cause short circuits, creepage and discharge of electrical equipment; and running electrical equipment will cause poor heat dissipation and motors. Insulation aging, etc. This requires us to regularly clean the dust accumulation of the power supply lines and power supply equipment, and check the dust removal of the motor, especially the open motor before summer, to ensure the good heat dissipation of the electrical appliances, so that the poor heat dissipation effect can be effectively avoided Explosion-proof operation column price changes without unnecessary cost.

Fourth, do good outdoor electrical protection, measure insulation regularly, and recommend going out for maintenance for low long-term insulation. Rainy weather is also a kind of verification for the protection of outdoor electrical appliances and motor insulation. Electrical protection, especially rainproofing of electrical appliances, is especially critical. Rainy weather has high humidity, which can easily cause short circuits and leakage of electrical appliances. At the same time, severely aging motors are easy to absorb moisture. The insulation of the motor is reduced. On the one hand, the electrical protection must close the on-site control box door in time to ensure that the electrical protection cover is in good condition, and the protection cover does not leak or rain; on the other hand, it must ensure the insulation of the electrical equipment backup machine. When it comes to standby, it also plays an important role in the safe and stable operation of electrical appliances. This requires that we regularly measure the insulation of electrical standby machines, especially the insulation of hot standby appliances. Increase the frequency, it is recommended to go out for maintenance for electrical equipment that is not insulated for a long time, to ensure the long-term safe backup of the standby machine.

The reason for explosion-proof box (electrical) equipment heating: When the equipment is working, due to the effect of voltage and current, resistance loss heat will be generated. Allowable heat under load occupies a large proportion in equipment operation failures, so it is also one of the main failures of electrical equipment. Thermal failure can cause insulation thermal breakdown of electrical equipment, thermal deformation of conductor connection parts, and even fusion welding, which seriously threatens the safe operation of electrical equipment. Therefore, the majority of our users who use explosion-proof boxes can carry out irregular inspections and preventive work on explosion-proof boxes according to the four-point method.