10 kV transformer

I. Product Introduction

Oil-immersed transformers are widely used cost-effective and energy-saving transformers in 10 kV distribution networks. With mature manufacturing technologies, they offer key advantages such as high reliability, low operating costs, and ease of installation and adaptation. They efficiently step down voltage and distribute electricity, suitable for various 10 kV power distribution scenarios, including urban and rural power grids, industrial and mining enterprises, commercial complexes, and civil buildings. As standardized power distribution equipment, they provide an ideal balance between cost, performance, and practical value.

II. Technical parameters (customizable)

Basic parameters

Rated power: 10 kVA-5000 kVA

• Connection group: Standard Dyn11 (adapts to most distribution network requirements and can supply power to single-phase loads)

Other key parameters

• Cooling mode: ONAN (natural oil cooling)

• Impedance voltage: 4% (standard configuration for standard capacities, meeting grid connection requirements)

• Noise level: 55–70 dB (slightly increases with capacity, lower than the traditional S7 series)

• Operating temperature: top oil temperature rise ≤55 K, maximum top oil temperature ≤95℃

III. Main Features

1. Energy saving and low operating costs.

The use of cold-rolled silicon steel sheets with high magnetic permeability and a 45° step-lap structure significantly reduces hysteresis and eddy current losses. Compared to traditional S7 transformers, no-load losses are reduced by approximately 10%, load losses by about 24%, and no-load current by roughly 46%. Long-term operation greatly reduces electricity costs with a short payback period on investment, making it ideal for energy-saving upgrades in power grids.

2. Fully sealed and maintenance-free, with high reliability.

Equipped with a fully sealed corrugated oil tank, eliminating the need for a traditional oil conservator, thereby completely isolating the insulating oil from air, preventing oxidation, moisture absorption, and leakage. The core is cured with epoxy resin; the winding has a spiral structure with vertical oil ducts. No core lifting or oil replacement is required, ensuring minimal scheduled maintenance, high operational stability, and a long mean time between failures.

3. Excellent short-circuit resistance under complex conditions.

The iron core uses multi-step lamination technology with uniform magnetic circuit distribution. The optimized winding design provides exceptional resistance to sudden short circuits, adapting to voltage fluctuations and abrupt load changes. This prevents equipment damage and is suitable for urban, rural, and industrial/mining areas with large load fluctuations.

IV. Application Scenarios

1. Urban and rural distribution networks

As the main 10 kV distribution equipment, it is applied in urban residential areas, old district renovation, rural power grid upgrades, and township distribution networks, ensuring stable power supply for residential buildings and small commercial facilities while guaranteeing network reliability and energy efficiency.

2. Industrial and mining enterprises

Suitable for factories, mines, building materials enterprises, chemical plants, and other industrial sites, providing stable power supply for production equipment, lighting, and office spaces. It withstands significant load fluctuations and long-term continuous operation, reducing electricity and maintenance costs.

3. Commercial and public buildings

Applied in shopping malls, supermarkets, office buildings, hotels, hospitals, schools, and other public facilities, meeting the power needs for commercial activities, medical services, education, and office work, featuring low noise, energy saving, and high reliability.