Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of 1000kva residential area oil type transformer in China. If you're going to wholesale durable 1000kva residential area oil type transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
The 1000kVA Residential Area Oil Type Transformer is designed to provide stable, quiet, and efficient electricity for urban and suburban communities. The rated capacity is 1000kVA (i.e. 1MVA), with a primary side of 11kV and a secondary side of 0.415kV.
We use high-quality silicon steel cores and optimized windings, so our 1000kVA residential oil immersed transformer has low loss, strong overload capacity, and high energy efficiency. The oil immersed cooling system performs well in heat dissipation, improves reliability, and extends the life of transformers. In addition, the fully sealed structure can prevent moisture from entering and minimize maintenance needs by preventing oil oxidation.
It is compact, quiet, and safe, making it a reliable choice for residential areas, commercial complexes, and even public infrastructure projects.
This oil-type transformer plays a critical role in stepping down medium voltage (11kV) to low voltage (400V/415V), ensuring safe and efficient electricity supply for industrial, commercial, and infrastructure applications.
Technical Specifications
| Rated Capacity | 1000kVA (25kVA-1000kVA available) |
| Primary Voltage | 11kV (other voltages upon request) |
| Secondary Voltage | 0.415kV (or 400V) |
| Frequency | 50Hz / 60Hz |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Installation Type | Pole-mounted / Pad-mounted |
| Impedance Voltage | 4%–6% |
| Winding Material | copper or aluminum |

Application of 1000kVA Residential Area Oil Type Transformer
The 1000kVA residential oil-filled transformer is widely used in:
- Residential Communities
- Apartment Buildings
- Housing Estates
- Urban Distribution Networks
- Rural Electrification Projects
- Commercial Buildings
- Schools and Hospitals
- Municipal Infrastructure
Product Design Highlights: How Hengli Transformer Meets Key Residential Area Requirements
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Key Requirements |
Hengli 1000kVA Oil-Immersed Transformer – Design Highlights |
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Voltage Level & Capacity |
Rated 1000kVA (1MVA) with primary 11kV and secondary 0.415kV – perfectly suited for residential and commercial distribution. Wide capacity range available (25–1000kVA) with optional voltage customization. |
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Type of Transformer |
Oil-immersed design – excellent heat dissipation, cost-effective, and the most reliable choice for outdoor residential installations. |
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Energy Efficiency |
High-grade grain-oriented silicon steel core and optimized windings achieve >98% efficiency at full load. Low no-load loss significantly reduces energy waste during light-load periods (nighttime/daytime), saving long-term operating costs. |
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Safety Features |
- Fully sealed structure prevents moisture ingress and oil oxidation, minimizing leakage risk. |
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Noise Level |
Low magnetostriction core material combined with vibration-damping structure – operates well below national noise limits, suitable for installation near homes. |
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Installation Type |
Compact pad-mounted design with fully enclosed, corrosion-resistant tank – safe, aesthetically pleasing, ideal for urban residential areas, green belts, or roadside installation. |
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Reliability & Durability |
- Design life of 20–30 years. |
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Compact Design |
Optimized structure minimizes footprint – easy to install and maintain even in space-constrained residential zones. |
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Environmental Considerations |
- Optional natural ester insulating oil (biodegradable, high fire point). |
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Load Characteristics |
Strong overload capacity handles morning/evening peak fluctuations and short-term surges from household appliances – stable and reliable operation. |
Testing & Quality Assurance
We don't just ship it out – we run a full set of factory tests to make sure everything is perfect:
1,Winding Resistance Measurement
2,Ratio Test (Voltage Ratio Measurement)
3,Transformer vector group test
4,Short-Circuit Impedance & Load Loss Test
5,No-Load Loss & No-Load Current Test
6,Insulation Resistance Test
7,Test of on-load tap-changer
8,Oil pressure test on transformer to check against leakages past joints and gaskets



All products comply with IEC 60076, ANSI, and IEEE standards.
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