Nanjing Dust Sampler Explosion-Proof Electrical Certification, Zhongnuo Inspection

Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China and specializes in explosion-proof certification and coal safety certification application consulting services, offering one-stop explosion-proof technology consulting services.
What should a company pay attention to when applying for an explosion-proof certification?
Many clients are bewildered when inquiring about obtaining explosion-proof certificates, not knowing where to start.
Based on years of industry experience, ZhongNuo Inspection summarizes several points to be aware of when enterprises apply for explosion-proof certification.
Are you sure of the product's explosion-proof marking?
Do you offer samples and technical drawings?
Can you accommodate product modifications?
4. Are there frequent occurrences of institutions?
These 4 points are注意事项 for applying for an explosion-proof certification; specifically, how to apply,
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What test items are required to apply for an explosion-proof certificate?
Explosion-proof products must pass relevant testing requirements of the explosion-proof standards to apply for an explosion-proof certification.
Different explosion-proof types, catering to equipment used in various explosive environments, require different explosion-proof testing items.
Many clients also want to know what testing projects are required for explosion-proof products? What specific requirements are there for the explosion-proof design of the product?
Below, we'll provide examples of common explosion-proof testing items.
For instance, with intrinsically safe products, general test items include appearance and structure inspection, spark ignition test, dielectric strength, battery and battery pack testing, temperature rise test, transient energy test, etc.
Flameproof products primarily undergo tests including heat and cold resistance tests, internal ignition without propagation of explosion, shell pressure resistance, IP testing, and temperature rise tests.
Different test items, tailored to various modules or components of the product.
Each test item ensures that the product meets explosion-proof standards and achieves the required explosion-proof performance.
If a company is designing explosion-proof products and is unaware of the explosion-proof standards requirements,
Zhenuo Inspection can provide guidance services for explosion-proof circuit design and explosion-proof structural design.
Including explosion-proof standards, design essentials, drawing guidance, and offering consulting services for explosion-proof testing and certification.
Need this? Feel free to DM us anytime!

What standards are used for explosion-proof certification? What technical requirements are there?
An explosion-proof type is a type of explosion-proof design for electrical equipment.
The housing is designed to withstand explosive mixtures entering the housing through the housing joint surfaces or structural gaps, without being damaged upon internal explosion.
And ignite an explosive gas atmosphere formed by one, several gases or vapors.
Explosion-proof casings must possess both anti-explosion and explosion-proof capabilities. Generally, the casings of explosion-proof products are rather bulky and are suitable for fixed installations and equipment.
Explosion-proof joint face width, gap, and roughness are the three key elements of explosion-proof housing design.
Design requirements for the explosion-proof triad differ based on the use in mining I-class, non-mining IIA, IIB, and IIC explosive gas environments.
Refer to the design standards of GB/T3836.1 and GB/T3836.2 for specifics.
ZhongNuo Inspection has long been dedicated to explosion-proof product design, testing, and certification services.
A dedicated team operates in the explosion-proof field.
Proficient in explosion-proof standards, we offer services including explosion-proof housing design, drafting, modification guidance, certification consultation, etc.
If you have a need for this as well, feel free to message us anytime!

Certification Standards for Explosion-Proof Equipment Used in Explosive Gas Environments
GB/T 3836.1-2021 Explosive Atmospheres, Part 1: Equipment, General Requirements
GB/T 3836.2-2021 Explosive Atmospheres Part 2: Equipment protected by a flameproof enclosure "d"
GB/T 3836.3-2021 Explosive Atmospheres, Part 3: Equipment protected by an increased safety "e" type
GB/T 3836.4-2021 Explosive Atmospheres Part 4: Equipment protected by intrinsic safety "i"
GB/T 3836.5-2021 Explosive Atmospheres, Part 5: Equipment protected by positive pressure enclosures "p"
GB/T 3836.6-2017 Explosion-proof Environment, Part 6: Equipment protected by liquid immersion type “o”
GB/T 3836.7-2017 Explosive Atmospheres Part 7: Equipment protected by filling with sand of type “q”
GB/T 3836.8-2021 Explosive Atmospheres, Part 8: Equipment protected by "n" type protection
GB/T 3836.9-2021 Explosive Atmospheres, Part 9: Equipment protected by "m" type enclosures
Explosion-proof Certification Application Consulting Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.