500kva 630 Kva 1500 Kva 2000kva Oil Immersed Power Transformer
500kva 630 Kva 1500 Kva 2000kva Oil Immersed Power Transformer
1. Product Description
The 500kva 630 Kva 1500 Kva 2000kva Oil Immersed Power Transformer is a series of medium-capacity three-phase oil-filled distribution and power transformers widely used in global power transmission and distribution systems. Designed to comply with IEC 60076, ANSI, GOST and other international standards, this product line covers mainstream industrial and civil power capacity grades, with matched voltage levels including 10kV, 11kV, 22kV, 33kV and 35kV high voltage and standard 0.4kV low voltage, supporting customized voltage ratio and impedance parameters for diverse project demands.
Adopting high-quality cold-rolled grain-oriented silicon steel sheet core and high-purity copper winding, these oil immersed power transformers effectively reduce no-load loss and operating temperature. With conventional ONAN oil natural air natural cooling and optional ONAF forced air cooling modes, the 500kVA, 630kVA, 1500kVA and 2000kVA models maintain stable operation under long-term full-load and intermittent overload conditions. The fully sealed steel tank structure prevents moisture, dust and corrosive gas ingress, ensuring reliable performance in outdoor substations, industrial parks and urban power grid environments.
Available in S11, S13, S15 high-efficiency energy-saving series and SH15 amorphous alloy low-loss series, this range of oil immersed distribution transformers balances cost performance and energy-saving effects. It is the most mainstream medium-capacity power transformation equipment for power grid upgrading, industrial power renovation and commercial building power supporting projects worldwide.
2. Core Product Features
2.1 Ultra-low Energy Consumption & High Efficiency
This series of 500kva to 2000kva oil immersed power transformers adopts optimized core stacking process and high-conductivity copper coils, greatly reducing iron loss and copper loss compared with traditional transformers. S13 and S15 high-efficiency models achieve ultra-low no-load current and no-load loss, while the amorphous alloy SH15 series further reduces energy consumption, meeting international energy-saving and carbon reduction standards. It effectively lowers long-term operating power consumption for power stations, factories and municipal power grids, bringing significant economic benefits for long-term operation.
2.2 Excellent Heat Dissipation & Stable Load Capacity
Equipped with high-purity insulating mineral oil as heat dissipation and insulation medium, the transformer realizes efficient circulating heat dissipation. The standard ONAN passive cooling mode suits conventional load operation, and the optional ONAF forced air cooling system improves overload resistance, enabling the 1500kva and 2000kva large-capacity models to cope with peak power consumption surges. The overall temperature rise is strictly controlled within the standard range, avoiding equipment aging and failure caused by overheating, and adapting to continuous 24-hour stable operation.
2.3 Strong Durability & Environmental Adaptability
The fully sealed welded steel tank structure with anti-rust and anti-corrosion coating effectively resists rain, snow, humidity and industrial corrosion. The high-strength insulating structure and optimized winding design endow the transformer with strong short-circuit withstand capability, avoiding deformation and damage caused by grid instantaneous short-circuit impact. It can operate stably in the temperature range of -30℃ to +40℃, suitable for tropical, temperate and cold regional power projects, with a service life of up to 30 years.
2.4 Flexible Customization & Standard Compliance
Besides standard 10kV/0.4kV and 35kV/0.4kV voltage grades, the 500kva, 630kva, 1500kva and 2000kva oil immersed transformers support customized transformation ratio, impedance voltage, tapping range and installation accessories. All products pass strict factory testing and comply with IEC, ANSI-IEEE, BS and GOST international standards, supporting global EPC projects, overseas grid construction and regional power renovation needs.
3. Core Purpose
The core function of the 500kva 630 Kva 1500 Kva 2000kva Oil Immersed Power Transformer is to realize safe and efficient voltage step-up and step-down conversion in power transmission and distribution systems. It converts high-voltage grid electricity into standard low-voltage industrial and civil power, and can also complete voltage matching for distributed power generation equipment. As key medium-capacity power transformation equipment, it undertakes the core power supply and voltage regulation tasks between regional power grids and terminal power consumption units, ensuring stable, continuous and safe power supply for various power consumption scenarios.
Different capacity models have differentiated positioning: 500kVA and 630kVA oil immersed transformers are mainly used for small and medium-scale terminal power distribution; 1500kVA and 2000kVA large-capacity oil immersed transformers are applied to centralized power supply and regional grid power distribution, perfectly covering the power demand gap between small household transformers and large industrial high-capacity transformers.
4. Application Scenarios
4.1 Urban & Rural Power Grid Construction
This series of medium-capacity oil immersed distribution transformers is widely used in urban community power distribution stations, rural grid upgrading, urban street power supply and residential area power supporting projects. The 500kva and 630kva models are suitable for ordinary residential quarters and rural centralized power supply, while 1500kva and 2000kva models serve high-density residential groups and urban regional power distribution centers, effectively solving the problem of insufficient power supply capacity in urban and rural areas.
4.2 Industrial Park & Factory Power Supply
For manufacturing factories, industrial parks, processing workshops and mining enterprises with medium and stable power consumption, these oil immersed power transformers provide reliable power conversion support. The 630kva, 1500kva and 2000kva high-load models can adapt to the continuous power consumption of mechanical equipment, production lines and auxiliary electrical systems, and their strong overload resistance can cope with equipment startup peak power consumption, ensuring stable production power supply for industrial enterprises.
4.3 Commercial & Public Infrastructure
They are applicable to shopping malls, office buildings, schools, hospitals, scenic spots and other public buildings and commercial facilities. The energy-saving and low-noise design of the 500kva to 2000kva oil immersed transformers meets the environmental protection requirements of urban public areas, and the stable operation performance ensures the normal operation of lighting, air conditioning, elevator and electrical equipment in public places.
4.4 New Energy & Special Engineering Projects
Matching with solar power stations, wind power stations and distributed energy projects, these transformers complete voltage step-up and grid-connected power transmission. Meanwhile, they are widely used in road and bridge engineering, railway supporting projects, municipal engineering and outdoor substation construction. The outdoor waterproof and anti-corrosion design adapts to harsh outdoor construction environments, becoming the preferred power transformation equipment for medium-scale new energy and municipal engineering projects.
5. Frequently Asked Questions (FAQ)
Q1: What are the standard voltage levels for 500kva, 630kva, 1500kva and 2000kva oil immersed power transformers?
The standard high voltage grades of this transformer series cover 6kV, 10kV, 11kV, 22kV, 33kV and 35kV, and the standard low voltage is 0.4kV, which is suitable for most global industrial and civil power scenarios. Special voltage ratios such as 0.22kV, 0.69kV low voltage and 13.2kV, 24.94kV high voltage can be customized according to project requirements, fully adapting to different national grid standards and engineering needs.
Q2: What is the difference between ONAN and ONAF cooling modes of these oil immersed transformers?
ONAN (Oil Natural Air Natural) is the standard passive cooling mode, which relies on natural oil circulation and air dissipation for heat dissipation, suitable for long-term conventional load operation of 500kVA and 630kVA models, with low noise and no additional energy consumption. ONAF (Oil Natural Air Forced) is an optional forced air cooling mode, equipped with external cooling fans, which can significantly improve the overload capacity and heat dissipation efficiency, more suitable for 1500kva and 2000kva high-capacity transformers with frequent peak load operation.
Q3: What is the service life and maintenance cycle of this series of medium-capacity oil immersed transformers?
Under standard installation and normal operating conditions, the design service life of 500kva to 2000kva oil immersed power transformers can reach 30 years. It is recommended to carry out routine inspection every 6 months, including checking insulating oil quality, operating temperature and sealing performance, and conduct a comprehensive maintenance every 2 years. The fully sealed structure effectively reduces daily maintenance workload, realizing low-maintenance and long-term stable operation, which is more cost-effective than dry-type transformers in outdoor large-scale power supply scenarios.
