10kV/11kV Fully Sealed Oil Power Distribution Transformer

Zhejiang Tianrun Electric Co., Ltd. is one of the leading manufacturers and suppliers of 10kv/11kv fully sealed oil power distribution transformer in China. We are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk advanced 10kv/11kv fully sealed oil power distribution transformer from our factory. Also, quotation is available.

The S20 series fully sealed oil-immersed transformer delivers lower losses, lower noise and higher efficiency than a conventional unit, so it saves energy and pollutes less. The key difference: there is no conservator. When the oil volume changes with temperature, the corrugated plates on the tank simply flex to absorb the difference. Because the oil is sealed off from the air, it deteriorates more slowly and the insulation ages more slowly too. The result is better operational reliability, and in normal service the transformer needs no maintenance at all.

Note: More technical parameters of the transformer can not be reflected in the model, more information is required to check the technical parameters.

Oil-immersed Transformer S20 Series Product Parameter Table

Built on traditional structures and mature technologies, our transformers are upgraded with multiple optimized designs:

• Spiral coils with longitudinal oil channels are applied to greatly improve internal heat dissipation performance.
• The supporting structure for coil end faces is upgraded to strengthen resistance against short-circuit currents.
• New lifting and core positioning structures are adopted to guarantee reliability during long-distance transportation and service operation.

The S20‑M is a mid‑to‑high‑end advanced energy‑saving model featuring heavy‑load adaptability, all‑condition energy‑saving performance and superior environmental adaptability, targeting high‑requirement overseas industrial, municipal and new‑energy projects.

• Industrial scenarios: Large‑scale overseas industrial parks, heavy‑manufacturing enterprises and mechanical processing plants with frequent load fluctuations. Capable of stable operation under long‑term heavy‑load and intermittent impact‑load conditions.
• Municipal scenarios: Power distribution for urban core‑area retrofits, large commercial‑residential complexes and urban public transport hubs.
• New‑energy scenarios: Medium‑sized photovoltaic power stations, energy‑storage supporting systems and wind‑power grid‑connected distribution systems.

It is widely adopted in overseas low‑carbon demonstration parks, green building auxiliary facilities and high‑standard urban renewal projects, satisfying strict multi‑dimensional requirements for energy efficiency, load capacity, environmental performance and project acceptance.

1-Wire‑wound winding of transfomer

2-Foil‑wound winding of transfomer

3-Vacuum casting of transformer

4-Epoxy resin casting of transfomer

5-Coil assembling over core

6-HV porcelain bushings of oil immersed transformer

7-Lead insulation taping and welding of transfomer

8-Vacuum oil filling of transformer

9-Tank sealing of transformer

1-Measurement of winding resistance testing of transformer

2-Measurement of voltage ratio and check of phase displacement testing of transformer

3-Separate‑source AC withstand voltage testing of transformer

4-Measurement of no‑load loss and no‑load current of transformer

5-Measurement of short‑circuit impedance and load loss of transformer

6-No load loss and no load current testing of transformer

7-Temperature‑rise test of transformer

8-Partial‑discharge measurement of transformer

9-Winding ressitant and voltage ratio testing of transformer

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