Can Paraffin Oil Improve Transformer Insulation?

In summary, the conversation is discussing the use of a transformer for high voltage applications and the idea of using a paraffin oil "bath" to improve insulation. The suggestion is made to look for transformers with high isolation voltage and to dip them in oil if they are under-rated. It is important to have separate bobbins for the primary and secondary coils, or at least a divider, to ensure proper insulation. True high voltage isolation transformers are expensive, but there are cheaper options available for experimenting. A website is recommended for further information on the effectiveness of using oil for insulation.
  • #1
Ravaner
134
3
Hi Gents. I've to use a transformer ( "R" Core), primary to mains and secondary (2 X 9 V) connected to high voltage source of about 8 kV. I am going, in order to improve primary to secondary insulation, to place this transformer in a paraffin oil "bath". Is it a good idea ?
 
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  • #2
Look for transformers with high isolation voltage to start. I found 2 to 3KV isolation transformers before in cheap price. Then dip in oil.

Yes, if you get under rated transformers, you need to dip in oil. This will hopefully eliminate the creepage path ( arc along surface). It is important to have transformers that have primary and secondary side by side with separate bobbins or at least has a divider. If the secondary is right on top of the primary, no oil is going to do much as they are in close contact, oil is not going to help much.

They do sell true hv isolation transformers, but they are expensive.

Here is some I used before:

http://www.tamuracorp.com/products/laminated-power-transformers/

But they are not rated for 8KV, you have to experiment.
 
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  • #3

What is an oil insulated transformer?

An oil insulated transformer is a type of electrical transformer that uses oil as an insulating material between the windings and the core. This oil helps to prevent arcing and short circuits, while also providing cooling for the transformer.

How does an oil insulated transformer work?

An oil insulated transformer works by using the properties of oil to insulate the windings and core of the transformer. The oil also helps to dissipate heat generated by the transformer, keeping it from overheating. The transformer works by stepping up or stepping down the voltage of an alternating current (AC) electrical system.

What are the benefits of using oil as an insulating material?

There are several benefits to using oil as an insulating material in transformers. First, it is a good electrical insulator, meaning it can prevent electricity from flowing where it is not supposed to. Second, it is a good heat conductor, allowing heat to be dissipated from the transformer. Finally, it is a relatively inexpensive and easily available material.

What are the common uses of oil insulated transformers?

Oil insulated transformers are commonly used in power distribution systems, where they help to step up or step down the voltage of electricity to meet the needs of different areas. They are also used in industrial settings, such as in factories and plants, to power machinery and equipment. Additionally, they are used in smaller settings, such as in homes and offices, to power appliances and devices.

What are the safety precautions for working with oil insulated transformers?

There are several safety precautions that should be followed when working with oil insulated transformers. First, make sure the transformer is de-energized before working on it. Second, always wear appropriate personal protective equipment, such as gloves and safety glasses. Third, properly dispose of any used oil, as it can be hazardous. Finally, always follow the manufacturer's instructions and any applicable safety regulations when working with oil insulated transformers.

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