Energy Efficiency Class-II Oil Immersed Transformer

1. Product Overview

The Energy Efficiency Class-II Oil Immersed Transformer is a high-performance, energy-saving power distribution equipment developed in full compliance with GB 20052-2020 national energy efficiency standards and IEC 60076 international industry specifications. Adopting mature oil-immersed cooling structure and optimized electromagnetic design, this series of transformers effectively reduces no-load loss and load loss, reaching the national second-level energy efficiency level, which is far superior to traditional ordinary oil-immersed transformers in energy-saving performance.

Mainly covering S11, S13, S20 and S22 mainstream models, the product supports multi-specification customization with rated capacity ranging from 30kVA to 2500kVA and voltage levels covering 6kV, 10kV, 20kV and 35kV. It adopts fully sealed tank structure and high-magnetic-conductivity grain-oriented silicon steel sheet core, solving the problems of high energy consumption, poor waterproof and dustproof performance of traditional transformers. With stable operation, low noise and strong environmental adaptability, it can adapt to long-term continuous operation in various complex outdoor and indoor power distribution environments, and is a mainstream energy-saving and environmentally friendly power equipment for grid renovation and industrial and commercial power distribution projects.

2. Core Product Parameters

The following are the mainstream standard parameters of Class-II energy efficiency oil immersed transformers. Special specifications can be adjusted according to actual engineering needs:

3. Product Core Features

3.1 Excellent Energy-saving Performance

This product adopts high-quality 23ZH80 high-magnetic-conductivity silicon steel sheets and optimized core lamination process, which greatly reduces hysteresis loss and eddy current loss. Compared with traditional first and third-level energy efficiency transformers, its no-load loss and load loss are reduced by nearly 10%-30%. Long-term operation can effectively reduce power consumption and grid operation costs, fully meeting national energy conservation and emission reduction requirements, and bringing significant economic benefits to users.

3.2 High Operational Stability and Safety

The whole machine adopts a fully sealed welded steel tank structure, which completely isolates the internal transformer oil from the external air. It effectively prevents moisture, dust and corrosive impurities in the air from invading the interior, avoiding oil deterioration and insulation aging. The product has strong short-circuit resistance, can withstand 150% rated current short-term impact without damage, and effectively avoids equipment failure caused by grid fluctuation and short-circuit faults. The overall insulation performance is stable, and the operation safety rate is extremely high.

3.3 Low Noise and Environmental Protection

Through optimized coil winding and core vibration reduction design, the operating noise of the transformer is controlled below 60dB, which is about 20% lower than the traditional standard transformer noise. It will not cause noise pollution to the surrounding living and production environment, and is suitable for densely populated areas and environmentally sensitive scenarios. In addition, the product has no oil leakage risk and low carbon emission during operation, which is in line with green power construction standards.

3.4 Strong Environmental Adaptability and Durability

The shell adopts anti-corrosion paint spraying process, which has good waterproof, moisture-proof, rust-proof and anti-aging properties. It can stably operate in high temperature, high humidity, rainy and dusty outdoor environments for a long time. The overall structure is firm and compact, with strong seismic and compression resistance, and is not easy to be damaged by external mechanical impact. The design service life can reach 30 years under standard operating conditions, with ultra-low failure rate.

3.5 Low Maintenance Cost

Benefiting from the fully sealed structure, the internal transformer oil is not easy to deteriorate and oxidize, eliminating the need for frequent oil testing, oil replacement and internal cleaning work required by traditional open-type transformers. The daily maintenance workload is greatly reduced, and the later operation and maintenance cost of the equipment is effectively saved for users.

4. Application Scenarios

With stable performance and wide adaptability, Class-II energy efficiency oil immersed transformers are widely used in various medium and low voltage power distribution scenarios, covering civil, commercial, industrial and new energy fields:

4.1 Urban and Rural Power Grid Renovation

It is the core supporting equipment for rural power grid upgrading and urban community power distribution renovation. It adapts to the characteristics of scattered power loads and seasonal load changes in urban and rural areas, effectively improving grid power supply efficiency and reducing grid energy consumption.

4.2 Industrial Production Field

Suitable for power supply and voltage conversion of factories, mining enterprises, processing plants and other industrial places. It can stably bear long-term industrial heavy-load operation and frequent load fluctuation, ensuring continuous and stable power supply for industrial production equipment.

4.3 Commercial and Public Facilities

Widely used in shopping malls, office buildings, hospitals, schools, stadiums and other public and commercial buildings. Its low-noise and environmentally friendly features meet the environmental requirements of public places, and high stability ensures uninterrupted power supply for public facilities.

4.4 New Energy Power Generation Projects

It matches the power distribution needs of photovoltaic power stations, wind power stations and other new energy projects, and is used for voltage conversion and grid connection of new energy power generation equipment. It can adapt to the unstable power output characteristics of new energy and improve the grid connection efficiency of clean energy.

4.5 Transportation and Infrastructure

Applicable to power supply supporting of railways, highways, urban rail transit, outdoor substations and other infrastructure projects. It can adapt to harsh outdoor operating environments and provide reliable power guarantee for infrastructure operation.

5. Product Maintenance and After-sales Service

5.1 Daily Maintenance Guidelines

This series of transformers is designed with low maintenance, and daily inspection and maintenance are simple and convenient. Users only need to conduct regular visual inspection and parameter monitoring: check whether the shell has oil leakage, rust and damage every month; monitor the operating temperature, voltage and current data to ensure the equipment operates within the rated range; regularly clean the dust and debris on the radiator and shell to ensure good heat dissipation effect. For fully sealed models, it is not necessary to replace transformer oil regularly, only need to conduct oil quality sampling inspection every 3-5 years according to the operating environment.

In harsh environments such as high humidity, heavy dust and coastal salt fog, the inspection cycle can be appropriately shortened, and anti-corrosion treatment can be carried out on the shell regularly to extend the service life of the equipment. It is strictly prohibited to run the transformer with over-load for a long time to avoid accelerated aging of insulation components.

5.2 Professional After-sales Service Support

We provide one-stop full-cycle after-sales service for all Class-II energy efficiency oil immersed transformers. The whole machine enjoys a 3-year official warranty, and core components such as iron core and winding enjoy a 10-year quality guarantee. During the warranty period, any equipment failure caused by product quality problems will be repaired and replaced free of charge.

We have a professional technical service team to provide 24-hour online technical consultation and fault response services. For on-site equipment faults, we will arrange professional engineers to arrive at the site for maintenance and troubleshooting within the fastest time according to the user's regional location. At the same time, we provide free installation guidance, equipment commissioning and regular technical training services to help users master correct equipment operation and maintenance methods. Long-term spare parts supply service is provided after the warranty period to ensure the continuous and stable operation of the equipment throughout the whole life cycle.