Dry - type transformer cooling method

conventional type transformer cooling method is divided into natural air cooling (AN) and forced air cooling (AF). Natural air cooling, the transformer can be rated capacity under long-term continuous operation. Forced air cooling, the transformer output capacity can be increased by 50%. It is suitable for intermittent overload operation or emergency overload operation. Because overload and load voltage and impedance voltage increase greatly, it is in non-economic operation state, so it should not make it run continuously for a long time.

Transformer voltage is not the same

China's rapid economic development in recent years, the national economy has also developed and powerful. More and more people go out of the country, more and more enterprises to seek foreign development, and constantly develop foreign trade business. Transformer industry is no exception. General transformer exports have some 100kva single phase pole mounted transformer, such as export-specific transformers. Because the voltage standards vary from country to country. The United States and other countries with 120V voltage, electrical protection focus is on fire; and for China and other countries with 220V voltage, electrical protection focus is on electric shock from a theoretical point of view, the higher the voltage, the smaller the loss on the line, The lower the voltage the more secure. So the transformer in the direction of the export we also need to pay attention to its voltage use of the different. Whether small and medium enterprises of the pressure device manufacturers, or large transformer factory. Transformer exports have become part of the daily processing of production. This kind of transformer to provide regulated voltage for the power grid also plays an important role in the daily power grid.