The Oil-immersed transformer is an important power equipment, but also a kind of electrical appliance. Its appearance brings great convenience to our production and life, and continuously improves productivity and life efficiency. However, for the safe use of oil-immersed transformers, some precautions need to be taken into account:

　　1. The fire separation distance between an oil-immersed transformer with an oil volume of more than 2500kg and oil-filled electrical equipment with an oil volume of 600kg-2500kg should not be less than 5m.

　　2. When the fire separation distance between two adjacent oil-immersed transformers does not meet the requirements, a fireproof partition wall should be installed, or a fireproof water curtain should be added on top of the fireproof partition wall. Between single-phase oil-immersed transformers, only fireproof partition walls or fireproof water curtains may be provided.

　　3. When the distance between the outer wall of the factory building and the outer edge of the outdoor oil-immersed transformer is less than the specification table, the outer wall should use a firewall. The distance between this wall and the outer edge of the transformer shall not be less than 0.8m.

　　4. When the outer wall of the factory building is within 5m from the outer edge of the oil-immersed transformer, no doors, windows, and holes should be opened below the horizontal line of the total thickness of the transformer plus 3m and within the range of 3m on the outer edges of both sides; The fire resistance rating of the doors and fixed windows on the firewall outside its range shall not be lower than 0.9h.

　　5. When oil-immersed transformers and other oil-filled electrical equipment have a single oil volume of more than 1000 kg, oil storage pits and public oil collection pools should be set up, and transformer pebbles should be placed for fire prevention and oil unloading.

　　6. Oil-immersed transformers should be equipped with fixed water spray and other fire extinguishing systems in accordance with the current relevant regulations. The oil-immersed factory transformer should be installed in a separate room, and the door of the room should be a Class B fire door that opens outwards, leading directly to the outside of the house or the corridor, and should not open to other rooms.