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Why Power Transformers Use Mineral Oil

user image 2025-09-03
By: red143
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Power transformers are vital for transmitting electricity over great spans, and they require something special in order to work safely and efficiently. That is where mineral oil comes in.Developed by our firm,Yawei, mineral oil is a key part of power transformers. But why do we use mineral oil, and not something else? Let’s try to understand why.

Mineral Oil is of high dielectric strength

Mineral oil isn’t just any oil though, it has magic electric superpowers. It is capable of handling a lot of electrical pressure without breaking. This makes it an ideal insulator for power transformers. When you stuff it down a transformer, it makes sure that the electricity on the inside doesn’t leak out where it should not go. Good, because we do not want any electrical accidents here!

Mineral Oil is easily obtainable and inexpensive1.jpg

In addition to performing well, mineral oil is cheap and easy to obtain. Power transformers are made by companies like Yawei, so that makes it a smart choice. We have to have something that not only functions well, but also keeps costs down so that this whole power distribution remains cheap enough for everybody.

So, Mineral Oil is great for Heat Transfer

When transformers are functioning, they are hot, very hot. Mineral oil helps here too. It is good at transferring heat far away from where it isn’t wanted. That’s because it can help  Oil Immersed Transformer  to keep the transformer cool as it labors to deliver electricity to homes and businesses. Maintaining the transformer’s temperature is also important, as it can overheat and cease functioning optimally.

Mineral Oil Is Non-Flammable

Safety first, right? Mineral oil is good; it doesn’t  oil filled pad mounted transformer  burn so easily. That’s critically important because (if you have a transformer failure) the worst thing that can happen is a fire. With the aid of mineral oil, power transformers are much safer, and safety is always at the top of the list at Yawei.

Mineral Oil Is Tried and True

Finally, mineral oil isn’t new. It’s been around for decades and has  cast coil dry type transformer  been shown long-term to be effective in keeping transformers functioning well. Don’t fix what ain’t broke, right; when you’ve got something that works? At Yawei we believe in mineral oil as it has repeatedly proven itself time and time again to get the job done!

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