Where is dry type transformer used

    Dry transformer is usually connected with Dyn11, which can withstand high unbalanced current (the unbalanced current of zero line can reach 75% of the rated current), while oil transformer is generally connected with Yyn0, which can withstand 25% of the rated current. Dry transformer can be maintenance free, mainly dust removal. And every year, the oil transformer shall be tested to see if the transformer oil is qualified. If it is unqualified, replace the transformer oil with new one. The moisture absorber will turn yellow and become more dry, and the epoxy resin shall be used as insulation and fire-proof. When the oil becomes the insulating oil, it will ignite itself when it reaches the ignition point. The overload capacity of dry transformer is better than oil, because it is open type, with fan cooling and better cooling performance than oil. The main limiting factors of dry-type transformer need to be considered, including heating, maintenance and safety. Dry type transformers are through these three important factors, especially the importance of their outstanding performance.

    Dry transformer is usually connected with Dyn11, which can withstand high unbalanced current (the unbalanced current of zero line can reach 75% of the rated current), while oil transformer is generally connected with Yyn0, which can withstand 25% of the rated current. Dry transformer can be maintenance free, mainly dust removal. And every year, the oil transformer shall be tested to see if the transformer oil is qualified. If it is unqualified, replace the transformer oil with new one. The moisture absorber will turn yellow and become more dry, and the epoxy resin shall be used as insulation and fire-proof. When the oil becomes the insulating oil, it will ignite itself when it reaches the ignition point. The overload capacity of dry transformer is better than oil, because it is open type, with fan cooling and better cooling performance than oil. The main limiting factors of dry-type transformer need to be considered, including heating, maintenance and safety. Dry type transformers are through these three important factors, especially the importance of their outstanding performance.