10 kV transformer

I. Introduction to the product

Oil-filled transformers are widely used for their economical and energy-saving properties in 10 kV distribution networks. Thanks to proven manufacturing technologies, they offer key advantages such as high reliability, low operating costs, and ease of installation and adaptation. They provide efficient voltage step-down and power distribution, suitable for a variety of 10 kV power distribution scenarios, including urban and rural power grids, industrial and mining facilities, commercial complexes, and public 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 (adaptable to most distribution network requirements and capable of supplying single-phase loads)

Other Key Parameters

• Cooling mode: ONAN (natural cooling with oil cooling)

• Impedance voltage: 4% (standard configuration for standard powers, meeting network connection requirements)

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

• Working temperature: oil temperature rise at the top ≤55K, maximum oil temperature at the top ≤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° stepped structure significantly reduces hysteresis and eddy current losses. Compared to traditional S7 transformers, no-load losses are reduced by approximately 10%, load losses by approximately 24%, and no-load current by approximately 46%. Long-term operation significantly reduces energy costs with a short payback period, making it ideal for energy-saving grid modernization.

2. Completely sealed and maintenance-free, highly reliable.

Equipped with a fully sealed corrugated oil tank, eliminating the need for a traditional oil conservator, the insulating oil is completely isolated from the air, preventing oxidation, moisture absorption, and leakage. The core is cured with epoxy resin; the winding has a spiral structure with vertical oil passages. Core lifting and oil changes are not required, ensuring minimal scheduled maintenance, high operational stability, and a long mean time between failures.

3. Excellent short circuit resistance under harsh conditions.

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

IV. Application Scenarios

1. Urban and rural distribution networks

As the main distribution equipment for 10 kV, it is used in urban residential areas, during the reconstruction of old districts, the modernization of rural power grids and the distribution networks of villages, ensuring a stable power supply to residential buildings and small commercial facilities, while guaranteeing network reliability and energy efficiency.

2. Industrial and mining enterprises

Suitable for factories, mines, construction materials manufacturing facilities, chemical plants, and other industrial facilities, it provides stable power for production equipment, lighting, and office spaces. It withstands significant load fluctuations and long-term continuous operation, reducing energy and maintenance costs.

3. Commercial and public buildings

It is applied in shopping malls, supermarkets, office buildings, hotels, hospitals, schools and other public institutions, meeting the power needs of commercial, medical, educational and office work, featuring low noise, energy saving and high reliability.