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Limit requirements for surface resistance of non-metallic shells of explosion-proof equipment

In hazardous areas with explosive dust or gases, vapors, such as coal powder, flour, aluminum powder, hydrogen gas, etc., static electricity may cause fires or explosions, posing great danger. Therefo……

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Common explosion-proof and intrinsic safety product explosion-proof technical requirements

Due to their special type, many explosion-proof electrical products are not a single explosion-proof type, but a combination of two or more explosion-proof types. Such as lighting fixtures, there are ……

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Common non conformities in on-site testing of explosion-proof electrical equipment | Explosion proof rectification

At present, hazardous chemical production enterprises in China are prone to frequent accidents, therefore, it is required to attach great importance to safety production testing and inspection. We sho……

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The content of electrical explosion-proof safety testing in hazardous areas | Explosion proof electrical testing items

The importance of electrical explosion-proof testing. Nowadays, we need to place safety testing and inspection work in a more important position. New safety testing methods and instruments are constan……

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Partial explosion-proof certification cooperative customers

The following is a list of successful explosion-proof certification products from Zhongnuo Testing in recent times. We have professional explosion-proof technology and rich experience in explosion-pro……

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Can I apply for coal safety certification in OEM mode?

Many customers say they don't have a production factory and ask if they can apply for coal safety certification? Prior to this, the regulations of the National Safety Standards Center were that only p……

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Three certification methods for explosion-proof products

What are the current modes of explosion-proof certification in China? Explosion proof certification is the process of determining whether equipment meets the requirements of explosion-proof standards,……

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Explosion proof certification for pry mounted refueling device

Explosion proof certification method for pry mounted refueling devices: These products are relatively large in size and generally require on-site testing and certification. Certification materials inc……

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Sample of Explosion proof 3C Certification | 3C Certificate

Explosion proof 3C certification is a mandatory certification adopted by the country for some explosion-proof electrical products. The products currently included in the explosion-proof 3C certificati……

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Concepts related to explosive dust in dust explosion testing

Dust explosion: Combustible dust within the explosion limit, when exposed to a heat source (open flame or high temperature), the flame instantly spreads to the entire mixed dust space; The chemical re……

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