Safety Technical Requirements For Distribution Transformer Installation

1. Safety technical requirements for distribution transformers installed on poles:
⑴ The distance between the transformer base and the ground should not be less than 2.5m, and all iron parts should be grounded.
⑵ The height of the exposed conductive part from the ground should be more than 3.5m.
⑶ The base of the transformer should be fixed to the stand, and the upper part should be fixed to the electric pole with hardware. ⑷The upper and lower leads of the transformer should use multi-strand insulated wires. The distance between the high-voltage drop-out fuse and the ground should not be less than 4m. The distance between the middle phase and the side phase of the high-voltage fuse should not be less than 0.5m. The angle between the center line of the porcelain part of the high-voltage fuse and the vertical line is 250-300. ⑸ Warning signs saying "No climbing, dangerous due to high voltage!" should be hung.
2. Safety technical requirements for distribution transformers installed in the open air:
⑴ The foundation of the floor-standing transformer should be 0.2m higher than the ground. If it is in a waterlogged area, a drainage channel should be set up around the transformer; a masonry wall should be set up around the transformer, with a wall height of not less than 1.8m. The door of the wall should be fire-resistant. It is made of high-voltage materials and designed on the low-voltage side of the transformer. The door should open outwards and a lock should be installed on the door. Bamboo and wooden fences should not be used.
⑵ The transformer is installed on a platform (pier), and the height of the platform (pier) should not be less than 2.5m.
⑶ When two or more transformers are installed outdoors, the distance between their shells should not be less than 1.25m.
⑷ The transformer shell should be properly grounded.
⑸ The distance between the transformer and the combustible building should not be less than 5m, and the distance from the fire-resistant building should not be less than 3m.
⑹ Hang a "Stop, High Voltage Danger" warning sign on the wall or platform (pier).
3. Safety technical requirements for distribution transformers installed indoors:
⑴ There should be good natural ventilation indoors.
⑵ The fire resistance grade of the transformer room should be Level 1.
⑶ The clear distance between the outer contour of the transformer and the rear and side walls should not be less than 0.6m, and the clear distance from the door should not be less than 0.8m; the doors and windows of the transformer room should open outwards, and there should be blinds below the doors and windows.