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.
How to apply for an explosion-proof certification for a modular equipment?
There is an increasing number of modular equipment used in explosion-proof areas, achieving more complex functions. In response to the technical requirements for explosion-proof certification of such equipment, ZN Testing has summarized years of industry experience, mainly including the following points:
(1) Explosion-proof properties are only considered for the electrical components, including their installation and connections, grounding, etc., without taking into account the steel structural parts.
(2) Electrical components must be purchased and installed with a防爆 certification or a防爆3C certificate. If suitable explosion-proof electrical components cannot be obtained, consider using explosion-proof/positive pressure methods for installation.
(3) The explosion-proof marking of the selected explosion-proof electrical components must not be lower than the explosion-proof marking grade of the entire machine.
(4) Explosion-proof electrical components installation, electrical connections, grounding, etc., must comply with standard requirements.
In the field of obtaining certifications for combined equipment, CNOR Test has a technical team and industry experience that can provide guidance on explosion-proof designs such as positive pressure and explosion-proof.
Guide clients in selecting, installing electrical equipment, and preparing technical drawings, etc. Engineers can also be dispatched for on-site inspections to reduce clients' certification costs and time. Successful certification cases include robots, AGV carts, industrial ovens, high and low-temperature chambers, filling machines, injection machines, and jacking oil equipment.
Chemical storage cabinets, dust removal equipment, etc. If you have a need in this area, feel free to DM us for further discussion!

The cost of obtaining explosion-proof certification at Shenzhen Zhongnuo Testing Technology Co., Ltd. is related to the following aspects:
1. Should we obtain the explosion-proof certificate or the explosion-proof 3C certification? If the 3C certification is required, a factory audit is necessary, which includes the factory audit fee, the travel expenses for the auditor, and the application fee and certificate fee for the 3C certificate.
2. Related to explosion-proof markings. Different explosion-proof markings have different explosion-proof items, and naturally, the costs vary accordingly.
3. Domestic explosion-proof certification or international explosion-proof certification? The same explosion-proof mark, ATEX/IECEx certification is much more expensive than the domestic explosion-proof certificate, and it also requires factory audits. North American explosion-proof certification is even more costly, over $100,000+
4. Do you need to retest? Some customers' products have never been designed for explosion-proof, and we have to make corrections, which adds to the cost. If the product includes batteries, battery testing is also an expense, especially for those that keep failing.
5. Needed or not. Labs are often booked solid, and there's often a waiting list. If needed, there will be a fee involved.

How to Apply for Explosion-Proof Certification for Enterprises:
1. Self-Application: The company applies to the certification body independently, prepares relevant documents, assists in debugging the prototype, and modifies the parts that are not in accordance with the standards. This process takes a longer cycle, involves higher comprehensive costs, and is time-consuming and labor-intensive.
2. Agent Application: This refers to the entire process of consulting and applying to Shenzhen ZhongNuo Inspection Technology Co., Ltd., including material revisions, prototype debugging, and progress coordination, which are handled by the consulting agency. The progress is well-ensured. The certification process is quick, the overall cost is manageable, and it saves time and effort.

IECEx Certification
IECEx is a certification system for explosion-proof electrical products promoted by the International Electrotechnical Commission (IEC), aimed at eliminating discrepancies in equipment and services used in explosive environments, promoting international trade, while maintaining the level of equipment safety requirements. The current explosion-proof standard is IEC 60079. IECEx certification has become a route for all hazardous area products to obtain international safety certification, and is currently recognized in many countries worldwide (including Australia, New Zealand, Brazil, Canada, China, Japan, South Korea, Malaysia, Singapore, South Africa, and the United States). Certificates issued by IECEx are automatically uploaded to the IECEx website, where manufacturers and end-users can find relevant documents.
Explosion Proof Certification Application Consultancy Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.