110kV Level Three-Phase Dry-Type Transformer Product Introduction

1. Product Overview

The 110kV level three-phase dry-type transformer is a high-performance, oil-free power transmission and distribution equipment independently developed for high-voltage power grid construction, urban power upgrading, and industrial high-power power supply scenarios. Different from traditional oil-immersed transformers, this product adopts epoxy resin casting insulation and air natural cooling/forced air cooling structure, eliminating the risk of oil leakage, flammability and explosion fundamentally.

This transformer adopts a combined three-phase structure composed of three single-phase units, which effectively reduces the operating voltage of each coil, solves the transportation and installation limitations of large high-voltage transformers, and greatly improves the on-site adaptability. Equipped with a built-in intelligent temperature monitoring and early warning system, it can realize real-time perception of operating status, ensuring stable and continuous power transmission in high-load and long-term operating environments. Complying with IEC 60076 international standards and national power industry specifications, it is a core supporting equipment for safe, green and efficient high-voltage power distribution.

2. Product Technical Parameters

The following are the core standard technical parameters of 110kV three-phase dry-type transformer, and customized parameters can be provided according to customer on-site working conditions and grid requirements:

3. Core Product Features

3.1 High Safety and Environmental Protection

The whole machine adopts oil-free design, with no flammable and explosive medium inside, completely avoiding safety hazards such as oil leakage, fire and explosion. The epoxy resin casting coil has excellent flame retardant performance, and will not produce toxic gas and smoke when encountering high temperature. It is pollution-free to the surrounding environment and fully meets the green power construction requirements of urban central areas and enclosed spaces.

3.2 Low Loss and High Efficiency

Optimized core silicon steel sheet structure and high-purity copper winding process are adopted to effectively reduce no-load loss and load loss. The overall operating efficiency is up to 99.2%, which can greatly reduce long-term operating power consumption and create significant energy-saving benefits for users. The product maintains stable output voltage under variable load conditions, avoiding power fluctuation interference to electrical equipment.

3.3 Strong Environmental Adaptability

The sealed casting structure has good moisture-proof, dust-proof and anti-corrosion capabilities, and can operate stably in high humidity, high dust and coastal salt fog environments. It is not restricted by altitude and climate, and can adapt to indoor and outdoor installation scenarios. The product has low operating noise, no vibration interference, and is friendly to the surrounding working and living environment.

3.4 Intelligent and Reliable Operation

Equipped with a full-set intelligent temperature measurement and control system, which can monitor the coil temperature in real time, automatically start the cooling fan for heat dissipation when the temperature rises, and trigger over-temperature alarm and tripping protection in case of abnormal conditions. The three-phase combined structure improves the overall operation stability, reduces the failure rate, and the service life can reach more than 30 years under normal operating conditions.

3.5 Convenient Installation and Maintenance

The modular integrated structure design simplifies the on-site installation process, no complex oil injection and sealing procedures are required, and the installation cycle is short. The overall structure is compact, the floor area is small, and it can be matched with prefabricated cabin substations to save space investment. The internal structure is simple and intuitive, with fewer vulnerable parts, greatly reducing daily maintenance workload.

4. Application Scenarios

Due to its high safety, high stability and environmental protection advantages, this 110kV three-phase dry-type transformer is widely used in key fields with high power supply safety requirements, covering urban construction, industrial production, new energy and public infrastructure:

• Urban Power Grid Construction: Core power distribution nodes in urban central areas, residential intensive areas, and urban underground substations, replacing traditional oil-immersed transformers to eliminate urban power safety hazards.

• New Energy Power Station: Supporting power transformation equipment for wind power, photovoltaic power stations and energy storage power stations, adapting to fluctuating new energy power output and ensuring stable grid connection.

• Large Industrial Park: High-power power supply for heavy industry, manufacturing parks and chemical enterprises, adapting to long-term high-load continuous operation of industrial equipment.

• Key Public Facilities: Power supply guarantee for data centers, large stadiums, hospitals, railway transportation and hub buildings, ensuring uninterrupted safe power supply.

• Special Environmental Scenarios: Power distribution in coastal salt fog, high altitude, humid and dusty areas, as well as indoor closed spaces with strict fire protection requirements.

5. Product Maintenance

Compared with oil-immersed transformers, this dry-type transformer has low maintenance cost and simple operation. Daily standardized maintenance can effectively extend the service life and ensure stable operation:

5.1 Daily Routine Inspection

Regularly check the operating temperature, running noise and voltage and current data of the transformer every day to confirm that there is no abnormal overheating, noise mutation and data deviation. Check the intelligent monitoring system display to ensure that the temperature measurement, alarm and protection functions are normal.

5.2 Regular Cleaning and Inspection

Clean the surface dust and foreign matters of the coil and casing every 3-6 months to avoid dust accumulation affecting heat dissipation and insulation performance. Check the wiring terminals for looseness, oxidation and heating phenomena, and fasten and polish the problematic parts in time. Inspect the cooling fan and ventilation channel to ensure smooth air circulation and normal heat dissipation.

5.3 Regular Performance Testing

Conduct insulation resistance test, partial discharge detection and voltage withstanding test every year to verify the insulation performance and electrical performance of the equipment. Record the operating data and test results, and establish equipment operation files to track the equipment status in real time.

5.4 Fault Prevention Treatment

In rainy and humid seasons, strengthen dehumidification and moisture-proof treatment of the equipment operating environment to prevent insulation dampness. For long-term standby equipment, regular power-on preheating treatment is required to ensure stable insulation performance.

6. After-sales Service Guarantee

We provide full-cycle professional after-sales service for all 110kV three-phase dry-type transformers sold, focusing on solving customer equipment operation problems and ensuring customer power supply stability:

• Warranty Service: The whole machine enjoys a 3-year free warranty, and the core coil and insulation structure enjoy a 10-year quality guarantee. During the warranty period, all quality failures caused by product design and manufacturing problems are repaired and replaced free of charge.

• Technical Support: Provide 24/7 online technical consultation service, respond to customer operation consultation and fault feedback in real time, and provide professional solution guidance.