Where to apply for Changchun positive pressure explosion-proof? Shenzhen ZhongNuo Inspection; Application Requirements

Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China, specializing in explosion-proof certification and coal mine safety certification application consulting services, offering one-stop explosion-proof technology consulting services.
Why choose tempered glass for explosion-proof transparent components?
Transparent components are a crucial material for explosion-proof electrical equipment. When selecting transparent components, customers always inquire about the material to be used. Can glass be used? Can plastic be used?
Below, Shenzhen Zhongnuo Testing Technology Co., Ltd. explains to you.
The GB/T3836.1 specification clearly stipulates the thermal shock test for transparent components, which aims to verify the thermal stability of glass under rapid cooling conditions. Currently, tempered glass is a material that not only meets this requirement but also offers high cost-performance.
普及 the fact that tempered glass, after being heated and then rapidly cooled, forms a uniform layer on the surface.
The compressive stress layer counters the tensile stress generated on the surface during rapid cooling. Therefore, even when subjected to stresses caused by rapid cooling, qualified tempered glass has a compressive stress that offsets its effects.

Which certifications are the ATEX and IECEx certifications from?
ATEX certification is a mandatory certification for explosion-proof products in the EU, part of the CE certification's explosion-proof directive, applicable to the EU and regions.
IECEx is the International Electrotechnical Commission's explosion-proof electrical products certification system, which is voluntary and applicable to member states of the IECEx scheme.
Most major economic powers globally are members of the IECEx system, including China.
For IECEx and ATEX certifications, ChinaNu检测has summarized the following distinctions:
(1) Application Scope: ATEX certification is applicable to the EU region, IECEx certification is applicable to IECEx member countries.
(2) Whether mandatory, ATEX certification is mandatory, IECEx is voluntary.
(3) Execution Standards: ATEX certification standards are IEC 60079 series, and IECEx certification standards are also IEC 60079 series.
(4) Explosion-proof Marking, the ATEX explosion-proof marking is more complex than the IECEx certification mark. You can see this clearly from our examples.
(5) Conversion issues: Currently, ATEX certification cannot be converted to certificates outside the EU. IECEx member states recognize IECEx certificates directly or indirectly, such as Australia and New Zealand, which directly recognize IECEx certificates. Other IECEx member states (such as China) can convert their IECEx certificates to local explosion-proof certificates.
For more information about ATEX certification and IECEx certification, feel free to send us a private message anytime!

Common Misconceptions About Explosion-Proof Certification:
Explosion-proof ratings are not the higher, the better.
Explosion-proof ratings are related to product structure and installation/use locations; choose the appropriate one. Of course, the higher the explosion-proof rating achieved, within the scope of the product structure, the broader the range of applicability.
2. Explosion-proof rating is not the same as protection rating. Protection rating refers to the IP rating we commonly use, which is a different matter from the explosion-proof rating.
3. The lower the temperature combination, the safer it is, rather than the higher the better.
Temperature combinations T6 (85°C), T5 (100°C), T4 (135°C), T3 (200°C), T2 (300°C), T1 (450°C) indicate the high surface temperatures achieved by the equipment under adverse conditions. In explosive hazardous areas, of course, the lower the high surface temperature of the equipment, the safer it is.
4. Gas explosion-proof certificates cannot be used in dust areas, and conversely, dust explosion-proof certificates cannot be used in gas areas.
5. A防爆 certification is sufficient for use underground in coal mines.
Wrong. Electrical equipment used in coal mine underground requires a coal safety certification, issued by the Safety Standardization Center.
Explosion-proof certification is only applicable to locations where explosive gases and dust are used beneath non-coal mines. If the product is listed in the explosion-proof CCC catalog, it is required to apply for the explosion-proof 3C certification.
Many misconceptions exist; feel free to consult Shenzhen ZhongNuo Testing Technology Co., Ltd. at any time!

What is an explosion-proof electrical installation qualification? How to apply for an explosion-proof installation qualification?
Certification for explosion-proof electrical equipment installation, maintenance, and repair training is one of the qualifications for companies in the field of explosion-proof electrical installation.
Many clients involved in installation and construction in explosive areas want to obtain such a certificate. Here's a brief introduction by ZN Testing on the application process and requirements.
Currently, explosion-proof installation qualification certificates are issued by different authorities, with varying certificate names, templates, and application requirements.
Primarily, it's through a training+examination process, including both company and employee certifications, with training standards based on the GB/T 3836 series.
As the applicant company through agency, ZhongNuo Inspection has cumulatively obtained the corresponding certificates for hundreds of client enterprises.
We schedule 1-2 training sessions and exams monthly, providing full assistance with the preparation of necessary documents.
Saves time and costs for a wide range of corporate clients.
Feel free to private message Shenzhen Zhongnuo Inspection Technology Co., Ltd. anytime if you have a need for this!
Explosion Proof Certification Application Consulting Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.