- 04
- Sep
Whether to choose a dry type transformer or an oil immersed transformer, you may compare and then decide
When power engineering chooses to purchase transformers, whether to use dry-type transformers or oil-immersed transformers, what are their respective advantages and relative shortcomings, then, compare them to know.
1. The difference in appearance
The main point is that the packaging forms are different. Dry-type transformers can directly see the iron core and coil, while oil-type transformers can only see the outer shell of the transformer.
2. Different lead forms
Dry-type transformers mostly use silicone rubber bushings, while oil-type transformers mostly use porcelain bushings. You will see that porcelain pillar above.
3. Different capacity and voltage
Dry-type transformers are generally suitable for power distribution, and the capacity is mostly below 1600KVA, the voltage is below 10KV, and some have a voltage level of 35KV; while oil-type transformers can be from 30kva to 3150kva. All capacity values, voltage levels also do to all voltages.
4. The difference between insulation and heat dissipation
Dry-type transformers are generally insulated with resin, cooled by natural air, and cooled by fans for large capacity, while oil-type transformers are insulated by insulating oil. heat dissipation on.
5. Different applicable places
Dry-type transformers are mostly used in places that require “fire prevention and explosion-proof”, and are generally easy to use in large buildings and high-rise buildings; while oil-type transformers may have oil ejection or leakage after an “accident”, causing fire, and most of them are used outdoors. And there are places where “accident oil pools” are dug.
6. Different load bearing capacity
Generally, dry-type transformers should operate at rated capacity, while oil-type transformers have better overload capacity.
7. The cost is different
For transformers of the same capacity, the purchase price of dry-type transformers is much higher than that of oil-type transformers.
Therefore, when purchasing products from transformer manufacturers, you need to make choices based on your specific needs. Professional buyers will professionally and scientifically communicate with transformer manufacturers.