Underground Transformer for Compact Power Distribution

Waterproof measures for underground transformers

1. Waterproof consideration during basic design and production

Top: The ventilation hole has effective rainproof and waterproof ability;

Inside: Use waterproof concrete materials to treat the two surfaces, so that the seepage cannot invade from the side of the pit;

Bottom: The waterproof concrete load -bearing base of the underground transformer is 300mm higher than the bottom surface of the pits. The water flowing from the ground to the pit from the ground to the pits is flowing to the ring road below the base.

2. Put the water sand pebble at the bottom of the foundation, and the water can penetrate the ground faster.

3. The underground transformer limit allows the immersion in the water within 0.5m in a certain period of time, which can be derived from the flood disaster and effectively improve the reliability of the power supply system. However, for the safe and reliable operation of the underground transformer, it is recommended that after the flood, long -term violence and the rainy season, check the pits of water in the water. If there are more water, it is recommended to take water and clean.

Measures on the control of underground transformers temperature rise control

1. The low temperature rising design of the transformer, the top layer of oil temperature control is around 45K, which is transported below the national standard 60K. The design ideas are:

(1) Thermal load is directly proportional to the loss. The raw materials used by the underground transformer designed and produced by our company are low -loss products, which can meet the energy efficiency needs of GB20052 and effectively reduce energy consumption.

(2) Insulation oil can be used for mineral oil and vegetable oil. Its good viscosity-time characteristics make the flow of oil when the temperature rises to speed up, ensuring that the product has good heat dissipation capabilities.

2. Box structure

The underground transformer fuel tank is designed by IP68 to meet the needs of soaking in water.

3. Surface treatment;

Because the underground transformer is installed under the cool surface, it uses a special surface treatment process to ensure that it has good heat radiation capabilities and strong corrosion resistance capabilities.

4. Basic production

The foundation of the foundation and the outside world is based on thermal conduction and air convection. The ventilation port and wind guide board can be set on the top of the foundation to strengthen the air circulation.