Although dry-type transformers are maintenance-free. However, as a transformer manufacturer, we also recommend regular inspections and maintenance activities. This article will introduce a more professional maintenance method - live cleaning. This maintenance method can be used not only for transformers, but also for most electrical equipment.
First of all, the definition: live cleaning is the cleaning of high and low voltage power equipment facilities and precision electronic equipment.

During the long-term operation of electrical equipment such as transformers, various dust, moisture, oil smoke, acid gas, salt, metal dust, static electricity and various charged particles floating in the atmosphere will be deposited on the surface of the equipment. The attachment of these pollutants leads to a decrease in the heat dissipation capacity of the transformer, and will also "slowly corrode" the circuit inside the equipment, causing poor contact, impedance reduction and other serious consequences.

Live cleaning uses polar and non-polar solvents to dissolve surface dust, which can remove harmful substances, eliminate or weaken static electricity, improve insulation performance, improve the contact effect of electrical contacts, and avoid failures.

It has the following characteristics:

1. Appearance: It is a colorless and transparent liquid, very pure, with a solvent smell.

2. Volatility: It can be completely evaporated after a few minutes.

3. Insulation: It has good insulation performance, withstands voltage ≥25kV, and can be used with power on.

4. Oil solubility: It has a strong dissolving effect on oil stains and can quickly remove oil stains on equipment.

In addition to transformers, power equipment (primary equipment, secondary equipment. Including power plants, substations, transmission lines, power grids, general enterprise distribution rooms, etc.), communication equipment (switch rooms, transmission rooms, base station equipment, data equipment, etc.), network equipment: (switches, routers, firewalls, servers, minicomputers, disk arrays, etc.), precision instruments (automation control equipment, electronic medical equipment, imaging equipment, etc.) can all be cleaned using live cleaning methods.

Appendix: Causes of electrical fires

1. Electrical equipment is covered and eroded by dirt, causing aging of insulating materials.

2. The ventilation parts of electrical equipment are blocked by dirt, resulting in poor heat dissipation of electrical equipment.

3. Loose contacts, arcing contacts or carbon brush ignition on electrical equipment ignites dirt.

4. Overheating of electrical equipment due to overload operation and other reasons can scorch, carbonize and even ignite dirt.

5. Poor installation or lubrication can cause bearing overheating and ignite dirt.

6. Conductive dirt can reduce the insulation of electrical equipment and even cause electrical explosions and fires.