S11 Type 400kVA 10-35kv 3-Phase Oil Immersed Oil Immersed Distribution Transformer

Product Introduction

The S11 Type 400kVA  oil-immersed transformers manufactured by our company feature fully oil-immersed sealed corrugated tanks. The tank shell utilizes its inherent elasticity to accommodate oil expansion while meeting heat dissipation requirements. The main body employs a novel insulation structure to enhance short-circuit resistance. The core utilizes high-quality cold-rolled silicon steel sheets, while both high- and low-voltage windings feature oxygen-free copper wire in a multi-layer cylindrical configuration. All fasteners undergo specialized anti-loosening treatment. This product delivers high efficiency with low losses, significantly reducing power consumption and operational costs while yielding notable social benefits. It is widely deployed in power plants, substations, industrial and mining enterprises, ports, airports, and similar facilities.

Optimized Product Features

• Low No-Load Loss Core：High-permeability silicon steel sheets cut no-load losses.

• Robust WindingsLaminated structure (≤500kVA) / spiral structure (≥630kVA) for high strength, balanced turns, and strong short-circuit resistance.

• Secure FixingPositioning structures (anti-transport displacement) + lock nuts (anti-loosening in long-term use).

• Sealed & Safe DesignVacuum oil injection (moisture-free, anti-oil aging) + pressure relief valves/thermometers/gas relays (safe operation).

• Corrugated TankSimplified manufacturing, leak-free welds, and enhanced heat dissipation via better oil flow.

• Compact & Maintenance-FreeSleek, small footprint—ideal for hassle-free use.