China Compulsory Certification for Explosion-proof Electrical Products,
Electrical Products,

▍Certification Overview

Standards and Certification Document

Test standard: GB31241-2014: Lithium ion cells and batteries used in portable electronic equipment―Safety requirements
Certification document: CQC11-464112-2015: Secondary Battery and Battery Pack Safety Certification Rules for Portable Electronic Devices

Background and Date of implementation

1. GB31241-2014 was published on December 5^th, 2014;

2. GB31241-2014 was mandatorily implemented on August 1^st, 2015. ;

3. On October 15th, 2015, Certification and Accreditation Administration issued a technical resolution on additional testing standard GB31241 for key component “battery” of the audio and video equipment, information technology equipment and telecom terminal equipment. The resolution stipulates that the lithium batteries used in the above products need to be randomly tested as per GB31241-2014, or obtain a separate certification. 

Note: GB 31241-2014 is a national compulsory standard. All the lithium battery products sold in China shall conform to GB31241 standard. This standard will be used in new sampling schemes for national, provincial and local random inspection.

▍Scope of Certification

GB31241-2014 Lithium ion cells and batteries used in portable electronic equipment―Safety requirements
Certification documents is mainly for mobile electronic products that are scheduled to be less than 18kg and can be often carried by users. The main examples are as follows. The portable electronic products listed below do not include all products, so products not listed are not necessarily outside the scope of this standard.

Wearable equipment: Lithium-ion batteries and battery packs used in equipment need to meet standard requirements.

▍Why MCM?

● Qualification recognition: MCM is a CQC accredited contract laboratory and a CESI accredited laboratory. The test report issued can be directly applied for CQC or CESI certificate;

● Technical support: MCM has ample GB31241 testing equipment and is equipped with more than 10 professional technicians to conduct in-depth research on testing technology, certification, factory audit and other processes, which can provide more accurate and customized GB 31241 certification services for global clients.

Explosion-proof electrical products, also known as Ex products, refer to electrical equipment specially used in industrial sectors such as petroleum, chemical, coal, textile, food processing and military industry where flammable liquids, gases, vapors or combustible dust, fibers and other explosive hazards may occur. Ex products must be certified as explosion-proof before being used in explosive hazardous locations. The present global explosion-proof certification systems mainly include IECEx, ATEX, UL-cUL, CCC and etc. The following content mainly focuses on the CCC certification of explosion-proof electrical products in China, and the in-depth explanation for other explosion-proof certification systems will be released in lateral periodicals.
The present compulsory certification scope of domestic explosion-proof electrical products includes 18 types, such as explosion-proof motors, explosion-proof switches, control and protection products, explosion-proof transformer products, explosion-proof starter products, explosion-proof sensors, explosion-proof accessories, and Ex components. The domestic compulsory certification of explosion-proof electrical products adopts the certification method of product testing, initial factory inspection and follow-up surveillance.
The explosion-proof certification is classified based on the explosion-proof electrical equipment classification, explosion-proofing type, product type, explosion-proof construction and safety parameters. The following content mainly introduces the equipment classification, explosion-proofing type and explosion-proof construction.