Oil Filled Distribution Transformers Installation Technical Requirements
Safety technical requirements for column-mounted distribution oil-immersed transformers: The basic distance of the transformer is less than 2.5 m, and all iron parts must be grounded. The grounding height of the exposed conductive part is more than 3.5 m, the transformer base is fixed with a workbench, and the upper part is fixed with metal parts and utility poles. The upper and lower lines of the transformer must be insulated with multiple insulations. The high-voltage roll-off fuse cannot be lower than 4 meters from the ground. The distance next to the high-voltage fuse should not be less than 0.5 meters. The angle between the center line and the vertical line of the high voltage fuse is 250-300. No climbing, danger of high voltage!; warning sign.
Safety technical requirements for indoor installation of oil-immersed transformers for distribution: Good natural ventilation is required indoors. The fire resistance class of the transformer room is Class I. The clear distance between the outer and rear walls of the transformer and the side walls shall not be less than 0.6 m. The positive distance from the door cannot be less than 0.8 m. Transformer room doors and windows should be open from the outside. The lower parts of doors and windows should be shutters.
Safety technical requirements for distribution oil-immersed transformers set on the ground: The foundation of the ground transformer must be 0.2 m higher than the ground. For example, drainage channels around transformers in flooded areas. Brick and stone walls should be set around the transformer. With a height of less than 1.8 meters, the doors of the walls are made of refractory materials. Pressing the side to open the door, lock the door. Bamboo or wooden fences cannot be used. The transformer adopts platform (span) installation. The height of the platform cannot be lower than 2.5 m. Two or more transformers are installed outdoors, and the distance between the exteriors should not be less than 1.25 m. The exteriors of the transformers are appropriate. The distance between transformers and combustible buildings cannot be less than 5 m. The distance between the transformer and the refractory building shall not be less than 3 m. Please hang a STOP, HIGH VOLTAGE DANGER warning sign on the wall or platform.
