5000KVA 35KV Oil-immersed transformer Pure copper

5000 kVA, 35 kV oil-immersed transformer in the 35kv On-load Tap-changing Transformer series. Copper-winding option listed. Confirm capacity, voltage ratio, winding and insulation materials, tap arrangement, losses, impedance, frequency, environmental conditions, testing and applicable standards against the project specification before ordering.

Manufacturer-supplied product information: Jiangsu Huayu Electric Co., Ltd.

Product Details

35KV 5000KVA Pure Copper Winding Oil Immersed Transformer: Adaptable to Multiple Power Supply Scenarios in the Power Grid

 

Currently, the high-voltage power distribution industry commonly suffers from the pain points of high losses in aluminum-core transformers and persistently high electricity costs during long-term operation. Many industrial and mining projects, as well as photovoltaic projects, often encounter problems with excessive equipment temperature rise and poor compatibility with integrated cabinets. We are launching this 35KV 5000KVA Pure copper Oil Immersed Transformer, supplied as a complete set with matching High And Low Voltage Switchgear and Box Type Substations. It can also be used in conjunction with Electric Power Converters and Combined Photovoltaic Substations. Unlike the heat-limited Dry Type Transformer, it relies on an oil-immersed circulating cooling structure to stably handle high-power loads. The equipment utilizes pure copper windings throughout, offering excellent conductivity. Its no-load and load losses are significantly lower than industry standards. When deployed in substations, mining areas, and large-scale photovoltaic power plants, it can sustainably reduce long-term power loss costs, stabilize standard output voltage, and prevent damage to downstream precision equipment caused by voltage fluctuations. Balancing long-term industrial operation with economic efficiency and power supply stability, it is widely used in urban and rural power grid upgrades, centralized photovoltaic power plants, heavy industrial plants, and large-scale water conservancy power supply projects. As a core transformer unit, it completes the high-voltage to medium- and low-voltage power conversion, supporting the continuous and reliable operation of the entire power distribution system.

 

Product Features

All-Pure Copper Winding Low-Loss Design:Copper has lower conductivity, ensuring stable temperature rise control during long-term full-load operation. It is suitable for continuous output of up to 5000KVA high power and meets the high-power generation requirements of Combined Photovoltaic Substations.

Universal Compatibility:Seamlessly connects to High and Low Voltage Switchgear and Box Type Substations, requiring no additional modifications to complete the entire power distribution setup. Compared to a single Dry Type Transformer, it is more suitable for long-term outdoor high-power applications. 

 

Practical Tips 

Before commissioning the equipment, check the insulating oil level and sealing components. When using it with an Electric Power Converter, simultaneously verify the voltage matching parameters at both ends to avoid operational failures caused by load mismatch.

 

FAQ (Frequently Asked Questions)

Q:Can this Oil-immersed Transformer be used long-term in outdoor photovoltaic stations?

A:The equipment casing is treated with anti-corrosion sealing and is compatible with outdoor Combined Photovoltaic Substations. Only periodic oil quality checks are required. Its outdoor stability is superior to dry-type Transformers.

 

Q:What is the routine maintenance cycle for the equipment? What are the key maintenance points?

A: Under normal operating conditions, conduct an inspection every six months, focusing on checking the insulating oil and cooling pipes. When using a High and Low Voltage Switchgear or Box Type Substation, simultaneously tighten the terminals to reduce contact loss.

 

Q:What does the after-sales warranty cover, and how is an oil leak handled?

A: The whole machine comes with a standard warranty service, and the core components such as the winding and oil tank are included in the warranty coverage. If oil leakage occurs, you can contact our technicians for remote guidance on repair. For bulk purchases, we can arrange for engineers to come to your site for debugging. We also provide a matching Electric Power Converter for collaborative troubleshooting.