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.
Sample requirements for explosion-proof certification application:
The sample machines submitted by the company for inspection must match the approved drawings and be fully assembled; the number of units inspected should meet the requirements.
If special disassembly tools are required, they should be sent along with it.
For encapsulated electrical equipment, a set of both encapsulated and non-encapsulated products should be submitted.
The transparent parts for the observation window should be supplied separately with at least 3, but no more than 5 pieces.
The transparent parts of the lighting fixtures should be sent separately in at least 5 pieces, with an additional 8.
Rubber aging tests should provide 3 to 5 pieces of 35156 rubber blocks.
Two 150-60mm plastic sheets are required for the insulation resistance measurement of the plastic casing. If the size permits, the measurement can be directly conducted on the plastic casing.
Generally, 1-2 finished products are required.

How to understand the difference between explosion-proof and intrinsic safety explosion-proof?
These are two different types of explosion-proof protection styles.
An explosion-proof design typically involves the use of an explosion-proof housing, which must be sufficiently thick and strong. Even if an explosion occurs inside the equipment,
The flame can also be extinguished due to the width, gap, and roughness of the explosion-proof shell mating surface, igniting the external hazardous environment.
On the other hand, even in the event of an explosion in a hazardous location outside, the explosion-proof housing retains its anti-explosion properties.
Overall, the housing is both explosion-resistant and explosion-proof. The equipment will be rather heavy.
intrinsic safety, also known as inherently safe equipment, achieved through limiting circuit energy and other measures
Safety-certified products have higher requirements for equipment's circuitry and operating power, generally suitable for handheld devices and low-power products.
Learn more about explosion-proof technology and contact Shenzhen Zhongnuo Inspection Technology Co., Ltd. directly!

What should be noted when applying for an explosion-proof certificate?
Many clients are baffled when inquiring about obtaining the explosion-proof certification, not knowing where to start.
Here are some key points to note when applying for an explosion-proof certification for businesses.
1. Product explosion-proof marking. If the customer has already confirmed the explosion-proof marking, it's a breeze. That's the target explosion-proof marking for the product assessment.
If you haven't yet determined the explosion-proof marking, or aren't sure what an explosion-proof marking is, don't worry.
Can you introduce the product's application and installation methods, or provide us with a product manual for an initial assessment of the explosion-proof marking?
2. Can you accommodate product modifications? Many customers inquire about explosion-proof certification when their products are still in the design phase.
You can also make modifications to the existing standard products and their technical drawings and documentation.
This involves the issue of explosion-proof standard requirements.
We can provide full technical guidance and assistance with certification document preparation for obtaining the explosion-proof certification.
Ease customers' time, effort, and worries in obtaining the explosion-proof certification.
3. Offer samples and technical drawings. Customers inquiring about explosion-proof certification vary greatly in their situations.
Customers being either the procurement party or the user, it becomes somewhat challenging to apply for the explosion-proof certification in such cases.
Due to difficulties in providing technical drawings and documentation. It's easier if the client is a designer or manufacturer.
The customer has their own design and development capabilities, along with complete design drawings and materials. They just need to coordinate with us for sample modifications.
4. Frequent Issuers. Currently, there are a dozen or so organizations in China that can issue explosion-proof certification, and the explosion-proof certificates from all these institutions have equal validity.

The cost of obtaining the explosion-proof certification at Shenzhen Zhongnuo Testing Technology Co., Ltd. is related to the following aspects:
1. Should we go for a防爆certificate or防爆3C certification? If the防爆3C certification is chosen, a factory audit is required, which involves additional costs for the audit fee, travel expenses for the auditor, and the applying fee and Certificate fee for the 3C certificate.
2. Related to explosion-proof markings. Different explosion-proof markings indicate 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 a factory audit. North American explosion-proof certification is even more costly, over $100,000+
4. Do you need to retest? Some customers' products haven't been designed with explosion-proof features at all, and they need to go through modifications, which adds to the cost. If the product includes a battery, battery testing is also an additional expense, especially for those batteries that keep failing the tests.
5. Needed or not. Labs are often booked up, and there's often a waiting list. If needed, there will be a fee involved.
Explosion-proof Certification Application Consulting Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.