In recent years, my country's coal, steel, petroleum, chemical and other fields have continued to build and expand projects, and the demand for explosion-proof motors has increased year by year. However, some old motor equipment has begun to have safety hazards due to years of load or poor maintenance. As time goes by, small probability safety hazards accumulate and eventually evolve into safety accidents. In recent years, more and more motor explosion accidents have begun to occur frequently. This is a very dangerous signal. "There has never been an accident in so many years" is just a fluke. We also know whether there are any safety risks. , once a problem occurs, it will be a more dangerous major safety accident.

Now the country has noticed these accidents and begun to pay attention to them. The content of national standard GB3836 has been revised many times, and the requirements for the safety and reliability of equipment in explosion-proof areas are becoming more and more stringent.

Therefore, in order to ensure the safe and reliable operation of explosion-proof motors and meet the requirements of national standards, it is particularly important to optimize and transform motors used in hazardous explosion-proof environments.