Dry Type Transformer

Our cast resin dry‑type transformer is designed for indoor high‑safety power distribution projects. Adopting advanced vacuum casting technology with F/H‑class fire‑resistant epoxy resin insulation and 100% high‑purity copper windings, this transformer features ultra‑low partial discharge ≤5pC, self‑extinguishing fire‑resistance, low‑noise running and minimal maintenance requirements.

As a professional Chinese manufacturer, we strictly control every production link including vacuum drying process to eliminate internal moisture. It delivers stable and reliable power conversion performance and extended service life, widely accepted by global industrial, commercial and infrastructure buyers. We support full customisation on capacity, voltage ratio and dimension for different project requirements.

01 Low Partial Discharge

Our dry‑type transformer features ultra‑low partial discharge performance, with PD value controlled ≤5 pC, reaching high‑quality industry standard. Superior insulation structure effectively restricts partial discharge risk during long‑term operation. Stable electrical performance avoids insulation deterioration caused by partial discharge. It greatly reduces hidden faults under continuous load, guarantees reliable running for indoor power distribution projects. Low partial discharge design slows insulation aging, extends overall service life, minimizes maintenance cost for end users. Strict partial‑discharge test is implemented before factory delivery to ensure each unit meets IEC standard for safe, long‑time operation.

Detailed product description：

02 High‑purity Copper Windings

This dry‑type transformer adopts 100% high‑purity copper windings. Copper material delivers outstanding electrical conductivity, effectively cutting load loss during operation and lowering energy consumption. Compared with aluminum winding solutions, pure copper winding brings more stable heat dissipation and anti‑overload capability. Compact winding structure resists temperature rise under heavy load. High‑quality copper reduces heat generation, slows insulation aging and prolongs transformer service life. It is well‑suited for continuous‑running industrial and commercial power supply scenarios, delivering stable output and lowering long‑term operating cost for power systems.

04 Advanced Vacuum Drying Process

We apply advanced vacuum drying process for dry‑type transformer production. This technology thoroughly removes moisture inside winding and insulation material. Moisture elimination greatly improves overall insulation performance of the transformer. It effectively prevents partial discharge triggered by residual moisture inside windings. Stable insulation property avoids breakdown risk under rated voltage. By eliminating moisture hazard, vacuum drying slows insulation aging significantly and extends transformer service life. Every core component goes through this process before assembly to secure reliable performance for long‑term indoor power distribution applications.