500 kVA three-phase oil-immersed distribution transformer
Power Rating: 500 KVA
Primary Voltage: 11 kV or other
Secondary Voltage: 0.11 kV – 0.60 kV or other
Connection Group: Dyn11/Yyn0 or other
Standards: ANSI/IEEE, CSA/CAN, DOE
Certifications: CSA, SGS, CE, UL, cUL
500 kVA Three-Phase Oil-Immersed Distribution Transformer Basic Features
Efficient heat dissipation and stable operation
Oil-immersed transformers dissipate heat through mineral oil circulation, with temperature rise controlled within 55K, referring to the GB/T 6451-2015 standard, and the heat dissipation efficiency is about 30% higher than that of dry-type transformers. The oil-cooled design can continuously withstand 100% rated load and is suitable for high-temperature or enclosed environments.
Extra-long service life
It adopts a fully sealed oil tank structure, isolating insulating oil from air and delaying aging. Experimental data shows, source: IEEE C57.91-2011, that under normal load, the average service life reaches 25–30 years, far exceeding the 15–20 years of dry-type transformers.
Strong overload capacity
Short-term overload can reach 120%–150%, lasting 2 hours, with stronger adaptability to sudden loads. For example, during grid peak periods, it can temporarily operate under overload without additional capacity expansion.
500 kVA Three-Phase Oil-Immersed Distribution Transformer Product Advantages
Low Maintenance Cost
Oil-immersed transformers only need oil level and insulation resistance inspection every 3–5 years, according to DL/T 573-2010 regulations. The maintenance cost is 40%–50% lower than that of dry-type transformers. There are no vulnerable parts such as fans, and the failure rate is lower than 0.5 times/year, data source: China Electric Power Research Institute report.
Upgraded Environmental Protection & Safety
New biodegradable insulating oil, such as FR3, can be selected, reducing the fire risk to UL-certified K3 level. At the same time, the noise is controlled below 50 dB, tested at 1 meter away from the equipment, meeting the environmental protection requirements of urban power grids.
Compatibility & Standardized Design
500 KVA is a general capacity range. The interface dimensions comply with IEC 60076 standards and can be directly matched with most switchgear, with installation compatibility of more than 95%.
For special project requirements, we can provide flexible OEM/ODM customized solutions. Welcome to send parameters for quotation.
Application
The 500 kVA 3 phase oil immersed distribution transformer is a medium capacity transformer suitable for power distribution in small and medium-sized factories, commercial complexes or residential areas. For instance:
Manufacturing
Stable power supply for small and medium production lines.
Commercial Buildings
Centralised power supply for central air conditioning, lighting and other equipment.
Infrastructure
Like intermediate links of water pump stations or regional substations.
The benefit is that it balances load capacity and installation cost, which makes it suitable for scenarios with steady growth of power demand.
500 kVA Three-Phase Oil-Immersed Distribution Transformer Specifications
| Item | Details |
| Place of Origin | China |
| Brand Name | CHBEB |
| Model Number | Oil Immersed Transformer |
| Type | Distribution Transformer |
| Standard | IEC 60076 |
| Certificate | CSA, SGS, CE, UL, cUL |
| Rated Power | 500 KVA |
| Frequency | 50 Hz / 60 Hz |
| Phase | Three |
| Cooling Type | ONAN |
| Primary Voltage | 11 KV |
| Secondary Voltage | 0.415 KV |
| Winding Material | Aluminum/Copper |
| Vector Group | Dyn11, Yyn0, Yzn11 |
| Oil Preservation | Hermetically Sealed / Conservator / Free Breathing |
| Dielectric Liquids | Mineral oil / Dimethyl Silicone / FR3 oil |
| Coolers | Corrugated wall or radiator |
| Impedance | 0.04 |
| Tap Changer | NLTC |
| Tapping Range | ±2×2.5% |
| Operating Temperature | -40 To +180 |
| No Load Loss | 0.48 KW |
| On Load Loss | 3.65 KW |
| Accessories | Standard Configuration |
| Remarks | N/A |
During the use of 500 kVA Three-Phase Oil-Immersed Distribution Transformer
We recommend the following precautions:
- Before installation and use, ensure that the installation position of the transformer is stable, well ventilated, and maintains a certain safety distance from other equipment.
- Regularly check the insulation performance and operating status of the transformer, and clean the dust and debris around the transformer in time to ensure its normal operation and safety.
- During repair and maintenance, ensure that relevant operating procedures and safety measures are followed to avoid damage to personnel and equipment.
FAQ
What occasions is the 500 kVA three-phase oil-immersed distribution transformer suitable for?
The 500 KVA three-phase oil-immersed distribution transformer is suitable for power systems, industrial and mining enterprises, urban distribution networks and other occasions.
What are the features of the 500 kVA three-phase oil-immersed distribution transformer?
The 500 KVA three-phase oil-immersed distribution transformer has features such as fully sealed structure, oil-immersed design, high efficiency and energy saving.
How to ensure the safety and reliability of the 500 kVA three-phase oil-immersed distribution transformer?
CHBEB follows international standards and industry specifications in design and manufacturing, using high-quality materials and advanced technology, and carries out strict quality inspection and control to ensure the safety and reliability of products.
