315kva 400kva 20kv 400v IEC Standard Oil Immersed Transformer
1. Product Overview
The 315kVA and 400kVA 20kV 400V IEC standard oil immersed transformer is a high-performance medium-voltage distribution transformer strictly manufactured in accordance with international IEC 60076 series standards. As a core device for medium-to-low voltage power conversion, this three-phase oil immersed distribution transformer features a classic 20kV high-voltage input and 400V low-voltage output configuration, covering two mainstream rated capacities of 315kVA and 400kVA to meet differentiated power demand scenarios. Adopting advanced oil-immersed cooling and fully sealed structural design, the equipment realizes efficient electric energy conversion, stable voltage regulation and reliable load operation, and is one of the most widely used industrial and civil power transmission and distribution equipment in modern power grid systems.
This IEC compliant oil filled transformer supports 50/60Hz universal power frequency, with optional Dyn11 and Yyn0 vector groups, and can adapt to various complex power supply environments. The whole machine adopts high-quality silicon steel sheets and copper windings, which effectively reduces no-load loss and load loss, achieves ultra-low energy consumption operation, and complies with international energy efficiency standards for power transformers. Whether for grid reconstruction, industrial power distribution or commercial power supply, the 20kV 400V oil immersed power transformer can provide long-term stable and safe power guarantee for users.
2. Core Product Features
2.1 Strict IEC Standard Compliance
The 315kVA/400kVA 20kV/400V oil immersed transformer fully complies with all technical specifications and testing standards of IEC 60076 power transformers, including insulation performance, temperature rise limit, short-circuit resistance and noise indicators. All products pass strict factory testing, with standardized production processes and stable product quality, meeting international export and domestic grid access requirements. Compared with non-standard transformers, this IEC standard oil immersed distribution transformer has higher operational safety and better universal compatibility, and can be perfectly matched with global mainstream medium and low voltage power distribution systems.
2.2 Efficient Energy-Saving Performance
Adopting high-grade oriented silicon steel sheet core and high-precision winding process, the 315kVA and 400kVA oil immersed transformers effectively suppress magnetic flux leakage and iron loss. The optimized core structure greatly reduces no-load current and no-load loss, while the low-resistance copper winding minimizes load loss during long-term operation. The energy efficiency level of the whole machine reaches the international advanced standard, which can effectively reduce the operating energy consumption of the power grid, save long-term operation costs for users, and realize green and low-carbon power distribution operation. It is a typical energy-saving oil immersed transformer for industrial and commercial use.
2.3 Excellent Heat Dissipation and Stable Operation
Equipped with a scientific oil circulation heat dissipation system and corrugated oil tank structure, the 20kV 400V oil filled transformer relies on insulating transformer oil for natural circulation heat dissipation, which can quickly take away the heat generated by the core and windings during high-load operation. The maximum temperature rise of the oil body and windings is controlled within the IEC standard range, ensuring continuous and stable operation under rated load and occasional peak load. The fully sealed oil tank structure prevents external moisture, dust and corrosive gas from entering, avoiding oil deterioration and insulation aging, and greatly extending the service life of the equipment.
2.4 High Safety and Strong Environmental Adaptability
The whole machine is designed with reinforced insulation structure, with strong lightning resistance and short-circuit impact resistance, which can effectively resist instantaneous voltage fluctuation and short-circuit faults in the power grid. The sealed anti-leakage structure eliminates hidden dangers of oil leakage, and the equipment has good waterproof, dustproof and anti-corrosion capabilities. It can stably operate in harsh environments such as outdoor open air, high temperature, low temperature, humid and dusty areas. In addition, the transformer has low operating noise, no electromagnetic pollution, and safe and environmentally friendly operation, meeting the environmental protection requirements of industrial parks, residential areas and public facilities.
2.5 Flexible Specification and Easy Maintenance
Dual capacity specifications of 315kVA and 400kVA are available for users to choose, covering most medium and small power demand scenarios. The 20kV high-voltage and 400V low-voltage standard voltage ratio is compatible with most power distribution equipment. The structural design is reasonable, with reserved oil detection ports, temperature measuring ports and maintenance interfaces, which is convenient for daily oil quality detection, fault inspection and routine maintenance. The equipment has low failure rate and simple later maintenance, effectively reducing user operation and maintenance costs.
3. Core Usage
As a key medium-low voltage power conversion device in the power distribution system, the 315kVA/400kVA 20kV 400V IEC standard oil immersed transformer undertakes the core function of converting 20kV medium voltage industrial power into 400V low voltage civil and industrial usable power. It is mainly used for voltage step-down distribution of medium-voltage power grids, realizing safe, stable and efficient transmission of electric energy from urban and rural power grids to terminal power consumption equipment.
This oil immersed power transformer can balance grid voltage, stabilize output current, avoid power supply fluctuation caused by load changes, and protect terminal electrical equipment from voltage impact. At the same time, it can optimize the power distribution structure, improve the utilization rate of electric energy, reduce line loss, and provide reliable power support for continuous production and normal operation of various facilities. It is an indispensable core equipment for medium and small-scale power distribution, power grid terminal power supply and industrial power transformation.
4. Wide Application Scenarios
4.1 Industrial Production Sites
The 315kVA and 400kVA 20kV/400V IEC oil immersed transformers are widely used in small and medium-sized processing factories, machinery manufacturing plants, food processing plants, textile factories and other industrial enterprises. These industrial sites have stable medium power demand, and the two capacity specifications can perfectly meet the power supply needs of production equipment, workshop lighting, mechanical operation and supporting facilities. The equipment's strong load resistance and stable operation performance can adapt to long-term continuous industrial production and ensure no power supply interruption during peak production periods.
4.2 Commercial and Civil Construction Projects
This IEC standard oil filled transformer is suitable for shopping malls, supermarkets, office buildings, residential communities, school campuses, hospitals and other commercial and civil buildings. It is used for terminal power distribution of building power systems, converting 20kV grid power into 400V low-voltage power for daily lighting, air conditioning, elevator operation and household electrical equipment. Its low noise, environmental protection and high safety features fully meet the power supply and environmental requirements of public living and office areas.
4.3 Urban and Rural Power Grid Renovation
In urban rural grid upgrading, community power grid reconstruction and rural power distribution network construction projects, the 20kV 400V oil immersed distribution transformer is the preferred power distribution equipment. It can solve the problems of insufficient power supply capacity and unstable voltage in old power grids, improve the power supply quality and reliability of rural and urban community power grids, and adapt to the increasing daily power consumption of residents and regional power load growth.
4.4 Infrastructure and Public Utilities
It is applicable to power supply for municipal infrastructure such as road lighting, park facilities, water supply and drainage pump stations, and sewage treatment plants. At the same time, it can also be used for temporary and fixed power supply of scenic spots, logistics parks, parking lots and other public places. The equipment's excellent environmental adaptability can cope with outdoor long-term operation and complex weather changes, ensuring stable power supply for public infrastructure.
4.5 Special Industry Supporting Scenarios
It can also be used for power distribution support of small mines, construction sites, new energy supporting projects and other scenarios. For temporary construction power and fixed power distribution of small and medium-sized engineering projects, the 315kVA/400kVA oil immersed transformer has the advantages of convenient installation, stable operation and strong universality, which can meet the power demand of special working conditions.
5. FAQ (Frequently Asked Questions)
5.1 What is the difference between 315kVA and 400kVA 20kV 400V oil immersed transformers in application?
The core difference between the two specifications lies in the rated load capacity and applicable power demand. The 315kVA oil immersed transformer is suitable for scenarios with small and medium power load, such as small residential communities, small factories, and ordinary office buildings with low power consumption. The 400kVA IEC standard oil immersed transformer has a larger load capacity, which can cope with higher power demand and peak load impact, and is mostly used in medium-sized processing enterprises, large commercial supermarkets, and communities with dense electrical equipment. Users can select the appropriate capacity according to the actual maximum power load and future load growth margin of the site.
5.2 Does this 20kV 400V oil filled transformer adapt to outdoor long-term operation?
Yes, this IEC compliant oil immersed distribution transformer is fully designed for outdoor and indoor dual-use scenarios. It adopts a fully sealed anti-corrosion oil tank structure, with excellent waterproof, dustproof, anti-rust and anti-aging performance. The internal insulating oil has stable physical and chemical properties, which can resist extreme temperatures of -40℃ to +45℃. It can operate stably for a long time in outdoor open-air environments such as urban power grids, rural distribution networks and municipal facilities, and is not easily affected by rain, snow, wind and sand, with low failure rate in outdoor operation.
5.3 What are the key maintenance items for IEC standard oil immersed transformers in daily operation?
Daily maintenance of 315kVA/400kVA 20kV 400V oil immersed power transformers is simple and efficient. The key maintenance items include: regularly detecting the quality and liquid level of insulating oil to avoid oil deterioration and oil leakage; regularly checking the operating temperature and noise of the transformer to ensure no abnormal overheating and noise; inspecting the insulation performance of high and low voltage bushings to prevent dust accumulation and insulation aging; regularly fastening wiring terminals to avoid poor contact and heating. It is recommended to conduct a comprehensive performance test every year in accordance with IEC standard specifications to ensure long-term safe and stable operation of the equipment.
