Technical Specifications of an Oil Immersed Distribution Transformer 11kV
China oil immersed distribution transformer 11kv Supplier,Factory 27 years in GuangDong
By Xinya Power editorial team
Technical Specifications of an Oil Immersed Distribution Transformer 11kV
In medium-voltage power networks, the oil immersed distribution transformer 11kV serves as a fundamental component for stepping down voltage from 11,000 volts to usable low-voltage levels (such as 400V or 480V). The defining characteristic of this equipment is the use of mineral oil or synthetic ester fluid, which functions simultaneously as an electrical insulator and a coolant. This dual functionality allows the transformer to dissipate heat generated by core and winding losses more effectively than air-cooled alternatives, enabling higher power density in a compact footprint.
A critical engineering feature of an oil immersed distribution transformer 11kV is the hermetically sealed tank design. By isolating the internal active parts from the external atmosphere, these units prevent moisture ingress and oxygen contact, which are primary causes of insulation degradation. For outdoor applications, the tank is often equipped with corrugated fins or radiators that expand and contract with temperature changes, accommodating the thermal expansion of the oil without requiring a conservator tank. This design significantly reduces maintenance requirements and extends the operational lifespan of the asset.
Efficiency standards play a pivotal role in the selection of these transformers. Modern 11kV units are manufactured to meet strict efficiency classes (such as IE2 or IE3), utilizing high-permeability grain-oriented silicon steel cores to minimize no-load losses. Additionally, the windings are typically constructed from copper or aluminum and are designed to withstand the thermal and dynamic stresses of short-circuit events. Whether deployed in utility substations, renewable energy parks, or industrial zones, the oil immersed distribution transformer 11kV provides a robust, cost-effective solution for reliable power distribution.
China XINYA Power Cables Co., Ltd Email: [email protected] Email: [email protected] whatsapp: +86 15289885778 Website: https://www.supplytransformer.com
