Materials required to apply for explosion-proof certificate:

1. Enterprise qualification certificate  

A copy of the business license (at the time of initial inspection), a power of attorney or application letter from the unit.

2. Enterprise Quality Assurance Certificate (if any)

According to GB3836.1-2000, enterprises should provide corresponding quality assurance certificates when submitting for review. When the enterprise passes the ISO9000 series certification, a copy of the ISO9000 series certification can be provided.

3. Technical data  

The technical materials submitted by enterprises for review include enterprise standards or technical requirements, product drawings, user manuals, etc.

a) Enterprise standards/technical requirements

The enterprise standards/technical requirements of the product should be written in the prescribed format, which should not only include the performance requirements of the product, but also include explosion-proof related content, such as basic parameters, explosion-proof signs, environmental conditions for use, explosion-proof performance requirements, relevant tests of explosion-proof performance, and explosion-proof related signs.

b) Product drawings

When applying for the explosion-proof certificate of intrinsically safe electrical equipment, enterprises should provide general assembly drawings, circuit schematic diagrams, printed circuit board diagrams, silk screen diagrams, component material lists, and nameplate diagrams, etc. When applying for the explosion-proof certificate of non intrinsically safe electrical equipment, the technical data submitted for inspection should include drawings that reflect the explosion-proof performance of the sample (including assembly drawings and part drawings). When the overall drawing can clearly indicate the explosion-proof parameters and structure of the product, only the overall drawing can be sent for inspection.

c) User manual

The user manual should include basic parameters, explosion-proof signs, product outline drawings, installation, maintenance, ordering instructions, and clearly indicate to users the precautions to ensure the explosion-proof performance of the product during installation and use.

d) Other information

For products with adhesive and sealing, the corresponding adhesive and sealing agent model name, performance description, and relevant process documents should be provided. For products with plastic shells, the material and corresponding performance documents of the plastic should be provided.

4. Samples submitted for inspection to apply for explosion-proof certification  

The prototype submitted by the enterprise for inspection should be consistent with the approved drawings and assembled completely. The number of inspection units should meet the requirements. If there are special disassembly and assembly tools, they should be sent together. For sealed electrical equipment, one set of products with intact sealing and one set of products without sealing should be sent. The transparent parts of the observation window should be sent as an additional 5 pieces, at least 3 pieces. The transparent parts of the lighting fixtures should be sent as an additional 8 pieces, at least 5 pieces. Rubber aging test should provide 35 × fifteen × 6 rubber blocks, 3-5 pieces. The measurement of insulation resistance of plastic shells requires a diameter of 150 to be provided × Two plastic sheets of 60. If the size allows, the plastic shell can be directly measured.

For more information on explosion-proof certificates, please contact Zhongnuo Testing directly

Service hotline: 18924609560 (same WeChat account)