Dry-type Transformer

Resin-insulated dry-type transformers are oil-free electrical equipment with epoxy resin as the core insulating medium, whose windings are vacuum-cast and cured. The mainstream type is fully epoxy-cast, commonly including SC and SCB series, with insulation classes mostly Class F and Class H. The capacity ranges from 10 KVA to 25 MVA, and the voltage levels adapt to the mainstream requirements of 10 KV, 20 KV, and 35 KV distribution networks. Its core structure consists of a core made of high-quality oriented cold-rolled silicon steel sheets and copper windings. Glass fiber is added during winding casting for reinforcement, forming a high-strength integral structure after curing with extremely low partial discharge. The equipment adopts natural air cooling or forced air cooling, with built-in temperature control elements to realize over-temperature alarm and remote monitoring. The enclosure protection class is optional from IP20 to IP54, suitable for various scenarios. This product features safety, explosion protection, fire resistance, flame retardancy, moisture and dirt resistance, no risk of oil leakage pollution, low operating noise, and simple maintenance. It is widely used in high-rise buildings, hospitals, data centers, and other places with high requirements for safety and environmental protection, complying with international and national standards such as GB20052, GB/T 1094, IEC 60076-1, and GB/T 10228.