Power equipment needs Dehumidifier in humid rainy season

Recently, due to rainy and humid weather in the south, coupled with suspended substances in the air, the power equipment of enterprises will enter a season of frequent malfunctions. Effective use of Dehumidifier may prevent many failures. In electrical engineering, when the relative humidity is greater than 80%, it is called a high humidity environment. Then it is necessary to use Dehumidifier.
In the southern region of China, it is continuously cloudy and rainy in March and April, with a relative humidity of over 90%. However, the required relative humidity for general electrical equipment cannot exceed 90% (25 ℃ and below). Without Dehumidifier, high air humidity will reduce the insulation performance of air on the one hand, and many parts of switchgear are insulated by air gap.
On the other hand, moisture in the air adheres to the surface of insulation materials, reducing the insulation resistance of electrical equipment, especially for equipment that has been in use for a long time. Due to the accumulation of dust and moisture inside, the degree of humidity will be more severe, and the insulation resistance will be lower. The leakage current of the equipment greatly increases, even causing insulation breakdown and accidents. Especially in high-voltage power facilities, it is more prone to the phenomenon of high-voltage discharge flickering. Then it becomes urgent to use the Dehumidifier.
The acidic substances secreted during the metabolic process of mold interact with insulating materials, resulting in a decrease in the insulation performance of equipment. This will not happen if Dehumidifier is used. Wet air can also cause corrosion of conductive metals, magnetic silicon steel sheets, and metal shells in power equipment, which will reduce the performance and service life of the equipment, and even cause electrical failures. Therefore, how should enterprises cope with the operation and management of electrical equipment in humid weather?
Dehumidifier and dehumidifier shall be installed in distribution room and electric cabinet where conditions permit to adjust indoor temperature and humidity. If conditions are not met, doors and windows, and electrical cabinet doors should be tightly closed when there is heavy fog to reduce the entry of humid air into the room and electrical cabinet. For some industrial electrical equipment such as motors, contactors, relays, etc., as well as some household appliances such as computers, refrigerators, televisions, etc., it is necessary to arrange the operating cycle reasonably and run it on power for a period of time every day to use its electrical operation to generate heat to drive away moisture. Or use a Dehumidifier to help drive away the humidity.
In the absence of a Dehumidifier, some electronic circuit boards can be dried with a cold wind shield of an electric hair dryer at a proper time to avoid wet short circuits in their circuits. Some electronic and electrical components can be sealed with glass glue or paraffin to prevent moisture. Electrical maintenance personnel should increase their inspection efforts on electrical facilities, promptly identify and handle hidden dangers, and eliminate faults in the bud.
The substation and distribution room should maintain smooth drainage of cable trenches to prevent cables and wires from being submerged in water. For some electrical facilities that have been running for a long time and have hidden dangers of insulation degradation, in addition to using dry compressed air to clean dust and mold spots, Dehumidifier should also be used to do a good job of moisture-proof. Take preventive measures, such as strengthening insulation treatment, installing insulation spacing materials, and appropriately shifting and widening the distance.
During electrical installation, it is also necessary to increase the distance between electrical components and add an additional layer of insulation material. As an electrical equipment maintenance personnel, during this "extraordinary" time

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