Electrical Motor Explosion-proof CCC Consulting Agency - Shenzhen Zhongnu Inspection

Shenzhen Zhongnuo Inspection & Testing Technology Co., Ltd. specializes in consulting services for explosion-proof CCC certification. We have a wealth of consulting cases in the field of explosion-proof 3C certification. We are well-versed in the application process and technical requirements for explosion-proof 3C certification, and can provide clients with consulting services such as application assistance and factory audit guidance.
Can coal safety certification be converted to explosion-proof 3C certification? - Answer from Shenzhen ZhongNuo Testing Technology Co., Ltd.
Based on the announcement, as of October 1, 2020, certain explosion-proof electrical equipment has been transferred to the mandatory product certification catalog.
It is the CCC certification. Products under the explosion-proof 3C certification category obtain the explosion-proof CCC certification by undergoing a "type test + factory audit" certification process.
Coal Mine Safety Certification, abbreviated as CMS, is a mandatory certification implemented by the Safety Standardization Center for all types of products and equipment used underground in coal mines.
The certification method is a combination of "type testing + factory audit."
Currently, mandatory product certification bodies and coal safety certification bodies are under different departments.
There is no mutual recognition between them. Coal safety certification and explosion-proof 3C certification are independent of each other.
The coal safety certification or the explosion-proof 3C certification cannot be substituted or converted for each other; they must be applied for separately.

What products can apply for the intrinsically safe explosion-proof certification? What are the requirements?
Bain 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 type of explosion-proof protection that the energy produced is not sufficient to ignite the surrounding explosive environment.
Therefore, intrinsic safety requirements impose limitations on the current, voltage, capacitance, inductance, and other parameters of electrical equipment.
Suitable for low-power equipment.
Additionally, there are specific requirements for the power supply method of intrinsically safe equipment, plastic enclosures, and wireless transmitters.
The product application for intrinsic safety certification requires the provision 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 design and certification experience for explosion-proof ratings of Class IA, IB, and IC.
If you need certifications in this area, welcome to send a private message to Shenzhen ZhongNuo Testing Technology Co., Ltd.!

Electrical equipment used in explosive gas environments requiring a防爆CCC certification standard
Explosion-proof Type: Intrinsically Safe
Applicable explosion-proof standards:
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"
Ex-proof Type: Intrinsic Safety Type
Applicable explosion-proof standards:
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 "d" enclosure
Ex-proof Type: Increased Safety Type
Applicable explosion-proof standards:
GB/T 3836.1-2021 Explosive Atmospheres, Part 1: Equipment, General Requirements
GB/T36.3-2021 Explosive Atmospheres Part 3: Equipment protected by an "e" type of increased safety
Explosion-proof Type: Positive Pressure Type
Applicable explosion-proof standards:
GB/T 3836.1-2021 Explosive Atmospheres, Part 1: Equipment – General Requirements
GB/T 3836.5-2021 Explosive Atmospheres, Part 5: Equipment protected by positive pressure enclosures "p"
Ex-proof Type: Oil Immersed
Applicable explosion-proof standards:
GB/T 3836.1-2021 Explosive Atmospheres Part 1: Equipment General Requirements
GB/T 3836.6-2017 Part 6: Equipment protected by immersion in liquid "o" for explosive environments
Exlosion-proof Type: Sand-filled
Applicable explosion-proof standards:
GB/T 3836.1-2021 Explosive Atmospheres, Part 1: Equipment – General Requirements
GB/T 3836.7-2017 Electrical Equipment for Explosive Gas Atmospheres – Part 7: Sand-filled Type “q”
Explosion-proof Type: "N" Type
Applicable explosion-proof standards:
GB/T 3836.1-2021 Explosive Atmospheres, Part 1: Equipment – General Requirements
GB/T 3836.8-2021 Explosive Atmospheres, Part 8: Equipment protected by "n" type protection
Ex-proof Type: Molding Type
Applicable explosion-proof standards:
GB/T 3836.1-2021 Explosive Atmospheres, Part 1: Equipment - General Requirements
GB/T 3836.9-2021 Explosive Atmospheres Part 9: Equipment protected by "m" type enclosures

Application cycle for the explosion-proof 3C certification (excluding rectification and preparation time for the applicant)
Institutional review of application materials: 2 business days
2. Issue Test Tasks: Within 2 working days after the review of documents is completed
3. Testing Cycle: Generally, a Testing Report will be issued within 30 working days after confirmation of sample receipt.
The delivery date is subject to the completion of the customer's provided documentation and the requested explosion-proof type. If adjustments are made during the testing process, the adjustment time is not included. For composite types or tests with complex projects and long cycles, the testing time is extended.
4. Factory Audit: Arrange factory audit within 3 working days upon issuance of the Testing Report. Complete factory audit within 5 working days.
5. Frequency of Certification: After the submission of the type test and factory reviewing report, the institution conducts a 5-workday review. Upon successful review, a Certificate is issued.
Explosion-proof 3C Certification Business Consulting Services - Shenzhen Zhongnuo Inspection Technology Co., Ltd.