8000KV·A Oil-immersed Transformer Product Introduction

1. Product Overview

The 8000kVA oil-immersed transformer is a high-capacity, three-phase power distribution and conversion equipment independently developed and manufactured in compliance with IEC international standards and national power industry specifications. Adopting mature oil-immersed cooling and insulated structure design, this transformer is tailored for medium and high voltage power grid systems and large-scale industrial power supply scenarios. It uses high-quality oriented cold-rolled silicon steel sheets and oxygen-free copper windings as core materials, paired with fully sealed oil storage and heat dissipation structure, realizing stable voltage conversion, efficient energy transmission and reliable operational performance. Compared with ordinary transformers of the same capacity, this model features lower no-load loss, weaker operating noise and stronger short-circuit resistance, which can adapt to long-term continuous outdoor and industrial harsh operating environments. It is widely used for step-up and step-down power conversion in regional power grids, industrial and mining enterprises, new energy power stations and other core power scenarios, serving as key core equipment to ensure stable and safe operation of power supply systems.

2. Product Technical Parameters

The core technical parameters of the 8000kVA oil-immersed transformer are strictly calibrated in accordance with industry standards, with stable and reliable data, covering electrical performance, structural specifications and operating conditions, as detailed in the table below:

3. Product Core Features

3.1 Excellent Energy-saving Performance

This transformer adopts high-permeability oriented cold-rolled silicon steel sheets and a non-hole laminated core structure, which effectively reduces magnetic flux leakage and no-load loss. The overall energy efficiency reaches the national first-class energy-saving standard, significantly reducing long-term operating power consumption. The optimized winding structure minimizes load loss during full-load and partial-load operation, bringing obvious energy-saving and consumption-reducing benefits for long-term continuous operation scenarios.

3.2 High Operational Stability and Safety

The product is equipped with complete safety protection devices, including Buchholz gas relay, pressure relief valve, oil level monitoring device and silica gel breathing valve, which can effectively monitor internal faults, prevent excessive internal pressure and moisture ingress. The fully sealed oil tank structure avoids insulating oil leakage and deterioration, and the overall partial discharge is extremely low. It has strong resistance to short circuit and impact, and can maintain stable operation even in fluctuating load and complex power grid environments.

3.3 Low Noise and Low Temperature Rise

Through optimized electromagnetic calculation and multi-stage stepped core design, the transformer effectively suppresses electromagnetic vibration and operating noise, with the operating noise far lower than industry standard values. The natural oil circulation and air cooling system realizes uniform heat dissipation, avoids local overheating during long-term full-load operation, and controls the temperature rise within a safe range, ensuring the stability of internal insulation performance.

3.4 Durable and Easy to Maintain

The shell is made of high-strength steel plate with anti-corrosion and anti-rust spray treatment, adapting to outdoor wind, rain and ultraviolet aging environments. The internal structure is compact and reasonable, with few vulnerable parts. The standardized structural design facilitates daily oil detection, component inspection and later maintenance, reducing operational and maintenance costs for users.

4. Application Scenarios

With large capacity, high stability and strong environmental adaptability, the 8000kVA oil-immersed transformer is suitable for medium and large-scale power supply and distribution scenarios, covering multiple fields such as power grid, industry, new energy and infrastructure:

4.1 Regional Power Grid Distribution

It is applicable for step-down and power distribution work in urban and rural regional substations, converting high-voltage grid electric energy into low-voltage electric energy that meets user demand, and undertaking the core power supply task of regional power grids.

4.2 Large Industrial and Mining Enterprises

It matches the high-power power demand of manufacturing factories, mining enterprises, chemical plants and metallurgical enterprises, and can adapt to frequent load fluctuation and long-term continuous power consumption of industrial production lines, ensuring stable power supply for industrial production.

4.3 New Energy Power Generation Projects

It is widely used in supporting power transformation equipment for photovoltaic power stations, wind power stations and energy storage power stations, completing the step-up and grid-connected power transmission of new energy power generation, solving the problem of voltage matching for new energy grid integration.

4.4 Public Infrastructure and Key Projects

It can be used for power supply guarantee of large transportation hubs, industrial parks, urban central heating and other public infrastructure, as well as temporary and permanent power distribution support for national key engineering projects, with high operational reliability to avoid power supply interruption.

5. Product Maintenance and After-sales Service

5.1 Daily Routine Maintenance

Daily maintenance focuses on regular inspection and state monitoring to ensure long-term stable operation of the equipment. Users need to regularly check the transformer oil level, oil color and oil temperature, confirm no oil leakage, discoloration and overheating. Regularly inspect the working state of breathing silica gel, replace the failed silica gel in time to prevent moisture from entering the oil tank. Clean the dust and sundries on the surface of the equipment and heat dissipation parts to ensure smooth heat dissipation. In addition, it is necessary to regularly detect the insulation performance, winding resistance and oil quality of the transformer, and record the operating data for subsequent state analysis.

5.2 Regular Professional Maintenance

It is recommended to carry out a comprehensive professional maintenance every 1-2 years by professional electrician technicians. The maintenance contents include testing short-circuit impedance, grounding resistance and partial discharge parameters, checking the tightness of internal wiring and fasteners, calibrating protection devices and monitoring instruments, and thoroughly analyzing insulating oil components. For equipment operating in harsh environments, the maintenance cycle can be appropriately shortened to eliminate potential faults in advance.

5.3 Fault Handling Guidelines

In case of abnormal noise, sudden temperature rise, oil level drop or protection device action during operation, the equipment shall be shut down for inspection immediately to avoid fault expansion. It is forbidden to disassemble and repair the equipment without professional authorization. Users need to feed back the fault phenomenon and operating data to the after-sales team in a timely manner, and arrange professional personnel for on-site maintenance and troubleshooting.

5.4 After-sales Service Guarantee

We provide one-year full machine warranty and lifelong technical support service for all 8000kVA oil-immersed transformers. During the warranty period, any quality problem caused by manufacturing process and raw materials will be repaired and replaced free of charge. We have a professional after-sales technical team, providing 24-hour online consultation and emergency response service. For equipment faults that cannot be solved remotely, we will arrange engineers to arrive at the site for maintenance within the fastest time. At the same time, we provide free equipment operation and maintenance technical training for users, and supply original spare parts for a long time to ensure the normal and stable operation of the equipment throughout the life cycle.