Energy Efficiency Primary Liquid Oil Immersed Transformer

Energy Efficient Primary Oil Immersed Transformer

Premium Grade Energy Saving Transformer

Low Loss Oil Immersed Distribution Transformer

High Efficiency Low Noise Power Transformer

CE/IEC Compliant Oil Cooled Transformer

Durable Sealed Oil-Immersed Transformer

Cost-Effective Primary Energy Transformer

1. Product Introduction

The energy efficiency primary liquid oil immersed transformer is a upgraded medium and high voltage power distribution equipment optimized for grid energy saving and stable power supply demands. Different from conventional ordinary oil immersed transformers, this product focuses on reducing no-load and load losses in actual long-term operation, adopting high-quality grain-oriented silicon steel sheets and oxygen-free copper windings, paired with a mature liquid oil heat dissipation and insulation system. It strictly complies with IEC, ANSI and international energy efficiency standards, and meets mainstream regional grid operation specifications worldwide.

This transformer takes liquid insulating oil as the cooling and insulating medium, which can effectively stabilize the internal operating temperature and avoid insulation aging caused by long-term full-load and variable-load operation. It is a core power transmission and distribution device widely used in industrial production, commercial power supply, new energy power generation and urban and rural power grid renovation projects. With reliable structural design and optimized electromagnetic parameters, it effectively solves the problems of high energy consumption and poor stability of traditional transformers in long-cycle operation, and greatly reduces the long-term operation cost of users.

2. Main Product Parameters

The product covers multiple conventional capacity specifications, supports customized voltage levels and structural parameters, and adapts to most medium-voltage power distribution scenarios. The core standard parameters are shown in the table below:

Parameter Item

Standard Specification

Rated Capacity

50kVA - 10000kVA (customizable for large capacity)

Primary Rated Voltage

10kV / 11kV / 35kV (optional)

Secondary Rated Voltage

0.4kV / 0.415kV (customizable)

Rated Frequency

50Hz / 60Hz adaptive

Cooling Method

ONAN (Oil Natural Air Natural)

Impedance Voltage

4% - 6% (adjustable according to capacity)

No-load Loss

25%-30% lower than traditional S9 series transformers

Winding Material

100% oxygen-free copper

Insulation Grade

Class A

Service Life

25-30 years (under standard operating conditions)

3. Product Core Features

3.1 Excellent Energy Saving Performance

This transformer adopts optimized magnetic circuit design and tightly stacked silicon steel sheet structure, which effectively reduces magnetic flux leakage and iron loss. Compared with traditional old-fashioned transformers, the no-load loss and load loss are significantly reduced, fully meeting international high energy efficiency standards. For users with long-term continuous operation, it can save a large amount of power consumption every year, effectively reducing enterprise power operation costs and carbon emission pressure.

3.2 Stable and Reliable Operation

The whole machine adopts high-purity oxygen-free copper windings with good electrical conductivity and strong overload resistance. The internal liquid insulating oil has excellent insulation and heat conduction performance, which can quickly take away the heat generated by operation and avoid local overheating. The corrugated oil tank structure is used to enhance the heat dissipation area, and the product has strong adaptability to voltage fluctuation and variable load operation, with extremely low partial discharge and stable output voltage.

3.3 Strong Environmental Adaptability

The product has good low-temperature resistance, high-temperature resistance and corrosion resistance, and can operate stably in harsh environments such as high temperature, low temperature, humid and dusty outdoor stations. The fully sealed oil tank design effectively prevents external moisture and impurities from entering, avoids insulation performance degradation, and is free from frequent environmental interference during field operation.

3.4 Low Noise and Safe Structure

Through core structural optimization and shock absorption treatment, the operating noise of the transformer is effectively controlled, which is far lower than the industry standard. It is equipped with standard over-current, over-voltage and overload protection functions, with perfect mechanical and thermal strength. It is not easy to deform during long-term operation, and the failure rate is extremely low, ensuring the safety and continuity of power supply.

4. Application Scenarios

Thanks to its high energy efficiency, strong stability and wide environmental adaptability, this liquid oil immersed transformer is suitable for almost all medium-voltage power distribution scenarios, covering industrial, commercial, new energy and municipal infrastructure fields:

• Industrial Production Field: It is widely used in manufacturing factories, mining enterprises, chemical plants and large industrial parks. It adapts to long-term high-load and intermittent variable-load power supply demands, and effectively reduces industrial power consumption costs.

• New Energy Power Generation: Suitable for solar power stations, wind power bases and energy storage power stations. It can stabilize voltage fluctuation in new energy power generation, improve power grid access quality, and adapt to outdoor unattended operation conditions.

• Urban and Rural Power Grid Construction: Used for urban community power supply, rural power grid renovation, street lamp power distribution and residential area power supply, providing stable and energy-saving basic power guarantee for municipal power grids.

• Commercial and Public Facilities: Applicable to shopping malls, office buildings, hospitals, schools and large transportation hubs. Low noise and stable operation can meet the power supply requirements of high-density power consumption scenarios.

• Outdoor Engineering Projects: Adaptable to field engineering, remote base stations and temporary power supply projects, with strong weather resistance and low maintenance frequency, reducing on-site operation pressure.

5. Product Maintenance and After-sales Service

5.1 Daily Maintenance Guidelines

This transformer has low daily maintenance cost, and regular simple inspection can effectively extend the service life and ensure stable operation. First, regularly check the oil level and oil quality of insulating oil, test dielectric strength and water content every six months, and replace deteriorated insulating oil in time to avoid insulation failure. Second, inspect the oil tank and welding parts regularly to eliminate oil leakage and corrosion hidden dangers, and clean the radiator surface dust and sundries to ensure unobstructed heat dissipation. Third, avoid long-term overload operation, regularly check the fastening degree of wiring terminals and the stability of voltage and current operation data. Fourth, conduct a comprehensive performance inspection of the whole machine every year, including core loss, winding resistance and protection device sensitivity test.

5.2 After-sales Service Guarantee

We provide one-stop professional after-sales service for all energy efficiency primary liquid oil immersed transformers. The whole machine enjoys a 3-year warranty, and core components such as iron core and windings are guaranteed for 10 years under normal use conditions. We provide lifelong technical consultation and maintenance guidance services, and send professional engineers to provide on-site installation guidance, commissioning and fault troubleshooting services according to user needs.

We have complete spare parts inventory and a professional after-sales team, responding to user fault feedback within 24 hours. For conventional faults, we provide solutions and complete maintenance work in the shortest time to minimize user power outage losses. At the same time, we can provide customized maintenance plans and regular equipment operation training according to user's on-site working conditions, helping users realize standardized and efficient equipment management.


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