Fire and explosion protection of Liquid Insulated Transformer

Liquid Insulated Transformer is the main equipment for power transmission and distribution in the power system. Liquid Insulated Transformer mainly reduces the high-voltage power of the grid to 600 volts (V) or 380 volts (V) that can be used directly to supply power to electrical equipment. So how does the fire and explosion protection of Liquid Insulated Transformer work? Let's take a look together next.

This is the content list:

l Hazards when overload or short circuit occurs inside the Liquid Insulated Transformer

l Pay attention to fire and explosion during Liquid Insulated Transformer operation

Hazards when overload or short circuit occurs inside the Liquid Insulated Transformer

If there is an overload or short circuit inside the Liquid Insulated Transformer, the insulating material or insulating oil will decompose due to high temperature or electric sparks, expand and even vaporize, causing the internal pressure of the Liquid Insulated Transformer to increase sharply, which may cause the Liquid Insulated Transformer shell to explode and cause a large amount of insulation. When the oil is sprayed out and burns, the flow of oil will further amplify the fire hazard.

Pay attention to fire and explosion during Liquid Insulated Transformer operation

1. Liquid Insulated Transformer cannot be operated with overload. Long-term overload operation of Liquid Insulated Transformer will cause heating of the coil, gradual deterioration of the insulation, and short circuit.

2. Frequently inspect the quality of Liquid Insulated Transformer insulating oil. The quality of Liquid Insulated Transformer oil should be tested regularly. Unqualified oil should be replaced in time, or other measures should be taken.

3. Prevent Liquid Insulated Transformer's iron core insulation from aging damage, which will cause insulation aging due to long-term heating of the iron core.

4. Prevent the insulation of Liquid Insulated Transformer from being damaged due to careless maintenance. If you find that the Liquid Insulated Transformer is scratched and damaged, deal with it in time.

5. Ensure that the Liquid Insulated Transformer leads are in good contact, and poor contact will cause local overheating.

6. To prevent lightning strikes, Liquid Insulated Transformer will burn out due to insulation breakdown.

7. Liquid Insulated Transformer short circuit protection, Liquid Insulated Transformer coil or load is short-circuited. If the protection system fails or the protection setting is too large, the Liquid Insulated Transformer may be burned. To this end, reliable short-circuit protection should be installed.

8. Protect Liquid Insulated Transformer with good grounding.

9. Liquid Insulated Transformer is ventilated and cooled. If the Liquid Insulated Transformer coil wire is A-class insulation, its insulator is mainly paper and cotton yarn. The insulation life of Liquid Insulated Transformer is reduced by about half for every 8°C increase in temperature. Liquid Insulated Transformer operates at a normal temperature below 90°C and has a lifespan of about 20 years. If the temperature rises to 105°C, the life span is 7 years. To operate Liquid Insulated Transformer, maintain good ventilation and cooling.

Zhejiang Shuntong Electric Co., Ltd. is a professional manufacturing enterprise integrating development, production, sales, and service. The above is related to the fire and explosion protection of the Liquid Insulated Transformer. If you are interested in a Liquid Insulated Transformer, please contact us. Our website is www.sntoom.com. We look forward to your visit and hope to cooperate with you.