Hey there! As a supplier of Electrical Oil Immersed Transformers, I often get asked about the acoustic noise characteristics of these transformers. So, I thought I'd share some insights on this topic.
What Causes the Noise in Electrical Oil Immersed Transformers?
The main sources of noise in electrical oil - immersed transformers are the core and the windings. The core of a transformer is made up of laminated steel sheets. When an alternating current passes through the windings, it creates a magnetic field. This magnetic field causes the core to expand and contract due to a phenomenon called magnetostriction. This expansion and contraction of the core result in vibrations, which are then transmitted as sound waves into the surrounding environment.
The windings can also contribute to the noise. When current flows through the windings, there are electromagnetic forces between the turns of the windings. These forces can cause the windings to vibrate, adding to the overall noise level.
Frequency Characteristics of the Noise
The noise from an electrical oil - immersed transformer typically has a dominant frequency component at twice the power frequency. In most countries, the power frequency is either 50 Hz or 60 Hz. So, the dominant frequency of the transformer noise is usually 100 Hz or 120 Hz. However, there are also harmonics present in the noise spectrum. These harmonics can have frequencies that are multiples of the power frequency and can contribute to the overall noise characteristics.
The noise spectrum of a transformer can vary depending on its design, size, and operating conditions. For example, larger transformers tend to produce more noise because they have larger cores and windings, which can generate more vibrations.
Noise Level and Its Impact
The noise level of an electrical oil - immersed transformer is usually measured in decibels (dB). The noise level can be affected by several factors, such as the load on the transformer, the temperature, and the quality of the insulation.
High - noise levels from transformers can be a nuisance, especially in residential areas. It can cause annoyance to the people living nearby and may even have an impact on their health in the long run. That's why it's important for us as suppliers to design and manufacture transformers with low noise levels.
How We Address the Noise Issue
At our company, we take the noise issue very seriously. We use high - quality materials for the core and windings to reduce the magnetostriction and electromagnetic forces. We also pay attention to the design of the transformer to minimize the transmission of vibrations.
For example, we use special insulation materials that can dampen the vibrations and reduce the noise. We also conduct thorough testing on our transformers to ensure that they meet the noise standards.
Our Product Range
We offer a wide range of electrical oil - immersed transformers. For instance, we have the 2000 - 20000kVA/35kV On - Load Tap - Changing Three - Phase Oil - Immersed Transformer. This transformer is designed for high - voltage applications and has excellent performance in terms of noise reduction.
Another product is the BS Photovoltaic Box Transformer. It is specifically designed for photovoltaic systems and is optimized to have low noise levels while providing reliable power conversion.
We also have the 50 - 2500kVA/10kV Super Low - loss Oil Immersed Transformer. This transformer not only has low noise characteristics but also offers high energy efficiency, which is very important in today's energy - conscious world.
Why Choose Our Transformers?
Our transformers are designed and manufactured with the latest technology and high - quality materials. We have a team of experienced engineers who are constantly working on improving the performance of our transformers, especially in terms of noise reduction.
We also offer excellent after - sales service. If you have any issues with the noise or other aspects of our transformers, our technical support team will be there to help you.
Contact Us for Purchase and Negotiation
If you're interested in our electrical oil - immersed transformers, whether it's for a small - scale project or a large - scale industrial application, we'd love to hear from you. We can provide you with detailed product information, pricing, and technical support. Don't hesitate to reach out to us for purchase and negotiation.
References
- IEEE Standard for Acoustic Noise Levels of Power Transformers and Reactor
- CIGRE Technical Brochure on Transformer Noise