What are the waterproof measures for buried transformers?

Water protection measures for buried transformers are crucial, and the following are some of the main water protection measures:
Water protection considerations in basic design and production:
1, the top design: ensure that the ventilation hole has a good rain and water prevention ability to prevent rain intrusion.
2. Side treatment: Use water-resistant concrete material to treat the side surface to prevent water infiltration from the side of the pit.
3, the bottom design: install water-resistant concrete bearing base, which is a fixed distance higher than the bottom of the pit (such as 300mm) to ensure that the water flowing from the ground to the pit will not soak into the transformer. In addition, the bottom of the foundation can be laid with water sand pebbles to accelerate the infiltration of water into the ground.
Equipment selection and water resistance:
1, the selection of electrical components and materials with water-proof performance to ensure that the equipment can still operate normally in a humid environment.