Oil Immersed Transformer

As one of the professional oil immersed transformer manufacturers, our oil immersed power transformeris specially developed and designed based on the advanced technology abroad for rough mountainous topography and transportation difficulties to meet the requirement of China oil type transformer Grid at a good oil immersed transformer price. The main characters of the oil filled transformerare low loss, low noise, and strong resistance of short circuit and free of core checking. We offer different transformer oil immersed types including 220KV Power Transformer, 110KV Power Transformer, 35 kv transformer and earthing transformer. Contact us to get more about oil immersed type now!

How to Choose a Transformer: Dry Type vs. Oil Cooled

There are two types of transformers in the industry: dry type power transformer and oil immersed transformer. Dry use air as the cooling medium, liquid cooling uses oil. Although the final results of both types are the same, there are still many differences between different types of power transformers, which will affect the type you choose.

Maintenance: Oil immersedtype transformers require more maintenance procedures, and are more often performed than dry type power transformers. Oil sampling is required to test contaminants, while dry type transformers are very resistant to chemical contaminants.

Cost (initial and operational): Dry type transformer has higher operating losses than oil immersed one. And the advantages of dry type transformer over oil cooled transformer is that it has higher standard energy efficiency, so it has longer service life than a dry type transformer.

Noise: The operating sound pressure of oil immersed transformer such as the 110 kv transformer is lower, so it has less noise pollution than a dry type transformer.

Recyclability: Life cycle recovery of dry type transformer is limited, while core/volume recovery of oil immersed one is easier. Our oil immersed transformer has excellent service life and maintainability, and produces less waste, and requires less replacement and labour.

Efficiency: Dry type power transformers are larger devices, but their voltage and size are limited, and they are more likely to overheat if overload happens. As a result, dry type transformers have higher power losses and cost more to keep dry power over time. Oil immersed distribution transformers are smaller and more efficient. They need less and create smaller environmental footprints.

Voltage capacity: Dry type transformer is designed to deal with medium and small MVA and rated voltage, making it an ideal choice for small applications. Oil immersed distribution transformer can bear a heavier load, so it is for higher voltage application.

Location: The location difference between oil and dry transformers will be the critical determinant of which type you need. Dry type is specified for use near buildings and buildings only because they are safer for the environment. Dry type power transformer is not flammable and has little fire hazard, which makes it very suitable for large shopping centres, hospitals, residential quarters and other commercial areas. Oil filling transformers will be used when installed outdoors, which may cause oil leakage and may cause fire, but these equipment are more environmentally friendly."

What Is the Purpose of Oil in a Transformer?

First, oil insulation is used to cover all parts that do not have solid insulation in the power transformer main body. Oil in a transformer also penetrates into the paper and fills the air gap, thus improving the quality of the paper insulation.

Another purpose of oil in a transformer is to spread heat from the core to the radiator, in which heat can be more easily distributed to the outside.

Maintenance of the Oil in a Transformer

3. ’s necessary to complement other type of oil, it must comply with regulations of mixing oil, and the oil should be tested by specific department to make sure of their compatibility. If the two types of oil are not compatible, it’s prohibited to use mixed oil.

As a professional transformer manufacturer, Shaanxi Hanzhong Transformer Co., Ltd has high-quality autotransformerfor sale. Welcome to contact us if needed.

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