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.
Products with Explosion-proof Certification:
The new implementation details are divided into 17 product units:
Explosion-proof motors: Center height ≤ 160mm or rated power ≤ 15kW, Explosion-proof motors: 160mm < center height ≤ 280mm or 15kW < rated power ≤ 100kW, Explosion-proof motors: 280mm < center height ≤ 500mm or 100kW < rated power ≤ 500kW, Explosion-proof motors: Center height > 500mm or rated power > 500kW.
2. Explosion-proof electric pumps
3. Explosion-proof distribution equipment
4. Explosion-proof switches, control, and protection products
5. Explosion-proof starters
6. Explosion-proof Transformers
7. Explosion-proof electric actuators, solenoid valves
8. Explosion-proof connector assembly
9. Explosion-proof surveillance products
10. Explosion-proof Communication and Signal Equipment
11. Explosion-proof Air Conditioners, Ventilation Equipment
12. Explosion-proof electric heating products
13. Explosion-proof accessories, Ex components
14. Explosion-proof instruments and meters
15. Explosion-proof sensor
16. Safety Fencing
17. Explosion-proof instrument cabinets

What are the requirements for a company to apply for explosion-proof certification -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
For businesses, applying for a domestic explosion-proof certificate imposes no special requirements on the company (except for the explosion-proof 3C certification).
Primarily, it's about checking if the product meets the explosion-proof standards and whether the required certification documents can be provided.
If the product falls under the explosion-proof 3C certification category, the applicant must have a production factory (OEM/ODM is also acceptable).
Because the explosion-proof 3C certification follows a certification model that includes both type testing and factory audit.
In addition to product testing, an annual review of the manufacturing facility is required.

Explosive Atmosphere Certification Standard for Combustible Dust Environments
GB/T 3836.1-2021 Explosive Atmospheres Part 1: Equipment General Requirements
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 an "p" pressure-proof enclosure
GB/T 3836.9-2021 Explosive Atmospheres, Part 9: Equipment protected by "m" type encapsulation
GB/T 3836.31-2021 Explosive Atmospheres Part 31: Equipment protected by dust ignition-proof enclosures "t"

What products can apply for the intrinsically safe explosion-proof certification? What are the requirements?
"An intrinsically safe design is one of the many explosion-proof protection types, which limits electrical energy so that the equipment remains safe even in the event of a fault."
A防爆保护型式, where the generated energy is not sufficient to ignite the surrounding explosive environment.
Therefore, intrinsically safe types have restrictions on the current, voltage, capacitance, inductance, etc. of electrical equipment, and are only suitable for low-power devices.
Simultaneously, there are clear requirements for the power supply method of intrinsically safe equipment, plastic enclosures, and wireless transmission.
The product application for intrinsic safety certification requires the submission of the product's schematic diagram, PCB diagram, etc.
ZhongNuo Inspection has dedicated engineers specializing in intrinsically safe circuit and structural design.
We offer technical consulting services for explosion-proof circuit design, drafting, and modifications. We have extensive experience in designing and obtaining certifications for intrinsic safety ia, ib, and ic categories.
If you need certification in this area, feel free to message us directly!
explosion-proof certification application consulting service - Shenzhen ZhongNuo Inspection Technology Co., Ltd.