35kV On-Load Tap-Changing Transformers Introduction

We provide a complete line of oil-immersed on-load tap-changing transformers rated at 35kV, available in a range of capacities and specifications for a variety of medium voltage applications. They are designed to international standards IEC, ANSI and IEEE and deliver excellent performance. The transformer parameters can be set by the user according to the required voltage, power and environmental conditions. These transformers are widely used globally in substations, load centres and renewable energy power plants, particularly in medium-voltage distribution applications requiring high power supply stability and energy efficiency. They are a reliable and efficient solution for optimisation of medium voltage energy distribution networks throughout the world.

Our company’s on-load tap-changing oil-immersed power transformers of 35kV and below are developed on the basis of the absorption of advanced technologies in the world. The performance indicators of these products are above the IEC-76 standard recommended by the International Electrotechnical Commission. These products have low loss, low noise and solve the problem of the core warp, which greatly improves the safety, reliability and economy of the product.

Product Model：SZ11-35

The main technical parameters are: rated voltage 35 kV, rated capacity ≤20000 kVA. All are two-winding, three-phase oil-immersed on-load tap-changing power transformers.

Main fields of application: It is suitable for 35kV medium voltage power distribution systems in regional substations, load centers, new energy power plants, industrial parks and other places with large grid fluctuations.

Product Features/Functions

1. Industry-leading energy-saving performance: High-permeability silicon steel sheets significantly reduce no-load loss.

2. On-load tap changer technology: it can change the voltage under the load of the equipment and avoid power outage, thus ensuring the stability of the power supply.

3. Low noise performance: It is suitable for sensitive environment like residential areas.

4. Fully sealed oil-immersed design: No oil leakage risk, suitable for harsh outdoor environments.

5. Long service life and high reliability: maintenance free operation.

Quality Control & Assurance

1. Product Lifespan Guarantee: Our transformers have a life span of at least 30 years.

2. We choose the certified suppliers carefully and strictly follow the quality management standard, strictly control and check all the raw materials and components.

3. We rigorously follow the requirements of the contract and technical agreement to produce high-quality and satisfactory products for customers.

4. All our transformers are fitted with performance indicators and technical specifications that are equal to or exceed international standards.

5. We encourage customers to visit our factory to supervise the production process, we will give full support.

6. Our service team is available 24/7 to provide technical support via video calls, troubleshooting guides and related documentation.