Intrinsic safety certification, also known as intrinsic safety explosion-proof certification. In the explosion-proof industry, explosion-proof protection types are divided into explosion-proof, intrinsic safety, increased safety, positive pressure, pouring sealing, and so on. Intrinsically safe type is just one of the explosion-proof types. Equipment that adopts this explosion-proof type is used in explosive places. Due to the limitations on its working voltage, current, capacitance, inductance, etc., even if sparks are generated in the internal circuit, it is not enough to ignite the surrounding explosive environment, which is inherently safe. Intrinsic safety certification is widely used in some low-power and low-energy instruments, handheld terminal products, etc.

Coal safety certification is a mandatory safety certification for equipment used underground in coal mines. Due to the presence of explosive substances such as gas in coal mines, protective measures must be taken for the electrical equipment used underground to achieve explosion-proof performance. Suitable explosion-proof protection types such as intrinsic safety, explosion-proof, and sealing can be selected based on product structure, electrical parameters, installation method, and usage area. It is worth mentioning that the electrical equipment applying for coal safety certification should not only have explosion-proof performance, but also meet the performance testing of the special environment underground in coal mines.

Zhongnuo Testing has been focusing on explosion-proof certification and coal safety certification for a long time, familiar with certification standards and processes, familiar with product explosion-proof design, rectification, testing, certification, factory review processes and requirements, and can help enterprises quickly obtain explosion-proof certification and coal safety certification.