10KV Oil Immersed Distribution Transformers

Henan GNEE Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of 10kv oil immersed distribution transformers in China. If you're going to buy customized 10kv oil immersed distribution transformers made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.

The 10kV oil immersed distribution transformer is a three-phase, mineral-oil-filled transformer that steps 10 kV (or 11 kV) distribution voltage down to 0.4 kV low voltage for factories, mines, petrochemical plants, agricultural networks and utility distribution substations. It is available in two construction types - hermetically sealed (sealed tank, no conservator) and conservator type (with an expansion tank) - both cooled by natural oil circulation and natural air (ONAN).

Manufactured by GNEE Electric to IEC 60076, the 10kV oil immersed distribution transformer combines a compact structure, low noise, low losses and strong overload capability, and is suited to demanding sites including locations exposed to oil contamination and chemical substances. Request a factory-direct quotation with complete test reports.

A 10kV oil immersed distribution transformer uses insulating oil as both the dielectric medium and the coolant. Compared with dry-type units at the same rating, it offers lower first cost, higher overload tolerance and better suitability for outdoor and harsh-environment installation:

• Compact structure, small footprint – the sealed tank design integrates core, windings, oil and protection devices in one enclosure with a clean appearance.
• Low noise and low loss – high-permeability silicon-steel core keeps no-load loss and audible noise low, reducing lifetime operating cost.
• Strong overload capability – the large thermal inertia of the oil allows short-time overload operation beyond dry-type limits.
• Harsh-site adaptability – proven performance in industrial and mining environments, including sites with oil contamination and chemical substances.
• Two construction options – hermetically sealed type (maintenance-reduced, no oil conservator) or conservator type (easier oil sampling and treatment).

Correct installation conditions protect performance and service life:

• Installation altitude: no more than 1000 m above sea level (derating and temperature-rise correction required above 1000 m).
• Supply voltage waveform: approximately sinusoidal.
• Supply voltage symmetry: the three-phase supply voltage should be approximately symmetrical.
• Ambient temperature: maximum +40 °C; maximum daily average +30 °C; maximum annual average +20 °C; minimum −30 °C (outdoor units; indoor units −5 °C unless specified).
• Relative humidity: ≤ 90% (25 °C) recommended for outdoor installations.

Note: For sites above 1000 m altitude or below −30°C, special design measures (enlarged cooling surface; low-temperature insulating oil such as #45 oil; or reduced capacity rating) are required-state the site conditions in your inquiry.

• High-quality core – high-permeability cold-rolled grain-oriented silicon steel, step-lap core construction for reduced no-load loss and noise.
• Copper windings – high-purity copper conductors with robust insulation withstand short-circuit forces and lightning impulses.
• Sealed or conservator tank – full-seal design prevents oil oxidation and moisture ingress; conservator design allows oil expansion and convenient maintenance.
• Complete protection options – gas relay, oil temperature indicator, pressure relief device and on-load monitoring per rating and customer specification.
• Type-tested and routine-tested – each transformer passes routine tests per IEC 60076 before dispatch; type-test reports are available.

Typical installations for this transformer family:

• Utility MV/LV distribution substations (10 kV / 0.4 kV)
• Industrial plants and mining power distribution systems
• Petrochemical and chemical processing facilities
• Agricultural irrigation and rural grid networks
• Commercial buildings and infrastructure projects
• Renewable energy collection systems (solar and wind farm auxiliary supply)

Tip: For petrochemical and chemical sites, confirm the fire-safety and containment requirements of the end user - options include high fire-point ester fluid and oil containment pits, which must be specified before production.

• Direct factory – Henan GNEE Electric Co., Ltd. manufactures and exports oil immersed distribution transformers worldwide, with competitive factory-direct pricing.
• IEC-compliant production – 10 kV and 35 kV distribution transformers hold IEC certification, with ISO 9001 / ISO 14001 / ISO 45001 system certification.
• Full documentation – routine test reports, outline drawings and operation manuals supplied with every unit.
• Custom engineering – voltage ratio, vector group, losses, accessories and enclosure tailored to project specifications.
• Export experience – products delivered to more than 50 countries and regions.

Tell us your rated capacity, voltage ratio, vector group and site conditions - GNEE's engineering team will confirm the technical solution and send a factory-direct quotation with lead time within 24 hours. Contact GNEE Electric now for your 10kV oil immersed distribution transformer project.

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