The release of UL 2054 edition three
The release of UL 2054 edition three,
UL 2054,
▍What is cTUVus & ETL CERTIFICATION?
OSHA (Occupational Safety and Health Administration), affiliated to US DOL (Department of Labor), demands that all products to be used in workplace must be tested and certificated by NRTL before being sold in market. Applicable testing standards include American National Standards Institute (ANSI) standards; American Society for Testing Material (ASTM) standards, Underwriter Laboratory (UL) standards, and factory mutual-recognition organization standards.
▍OSHA, NRTL, cTUVus, ETL and UL terms definition and relationship
OSHA: Abbreviation of Occupational Safety and Health Administration. It is an affiliation of US DOL (Department of Labor).
NRTL： Abbreviation of Nationally Recognized Testing Laboratory. It is in charge of lab accreditation. Up to now, there are 18 third-party testing institutions approved by NRTL, including TUV, ITS, MET and so forth.
cTUVus： Certification mark of TUVRh in North America.
ETL： Abbreviation of American Electrical Testing Laboratory. It was established in 1896 by Albert Einstein, the American inventor.
UL： Abbreviation of Underwriter Laboratories Inc.
▍Difference between cTUVus, ETL & UL
| Item | UL | cTUVus | ETL |
| Applied standard |
Same |
||
| Institution qualified for certificate receipt |
NRTL (Nationally approved laboratory) |
||
| Applied market |
North America (US and Canada) |
||
| Testing and certification institution | Underwriter Laboratory (China) Inc performs testing and issue project conclusion letter | MCM performs testing and TUV issues certificate | MCM performs testing and TUV issues certificate |
| Lead time | 5-12W | 2-3W | 2-3W |
| Application cost | Highest in peer | About 50~60% of UL cost | About 60~70% of UL cost |
| Advantage | An American local institution with good recognition in US and Canada | An International institution owns authority and offers reasonable price, also be recognized by North America | An American institution with good recognition in North America |
| Disadvantage |
|
Less brand recognition than that of UL | Less recognition than that of UL in certification of product component |
▍Why MCM?
● Soft Support from qualification and technology: As the witness testing lab of TUVRH and ITS in North American Certification, MCM is able to perform all types of testing and provide better service by exchanging technology face to face.
● Hard support from technology: MCM is equipped with all testing equipment for batteries of big-sized, small-sized and precision projects (i.e. electric mobile car, storage energy, and electronic digital products), able to provide overall battery testing and certification services in North America, covering standards UL2580, UL1973, UL2271, UL1642, UL2054 and so forth.
UL 2054 Ed.3 was released on November 17, 2021. As a member of the UL standard, MCM participated in the review of the standard, and made reasonable suggestions for the modification which was adopted afterwards.
The changes made to the standards are mainly involved with five aspects, which are paraphrased as followings:Miscellaneous revisions are made throughout the Standard; Sections 2 – 5, 6.1.2 – 6.1.4,
6.5.1, 8.1, 8.2, 11.10, 12.13, 13.3, 14.7, 15.2, 16.6, Section 23 title, 24.1, Appendix A.Clarification of requirements for adhesive labels; Section 29, 30.1, 30.2.Addition of the requirements and methods of Mark Durability Test .Made Limited Power Source Test an optional requirement; 7.1.Clarified the external resistance in the test in 11.11.The Short Circuit Test was stipulated to use copper wire to short circuit positive and negative anodes on section 9.11 of original standard, now was revised as using 80±20m
Ω external resistors.
Addition of section 6.3: General requirements for the structure of wires and terminals:The wire should be insulated, and should meet the requirements of UL 758 while considering whether the possible temperature and voltage encountered in the battery pack is acceptable.Wiring heads and terminals should be mechanically reinforced, and electrical contact should be provided, and there should be no tension on the connections and terminals. The lead should be safe, and kept far away from sharp edges and other parts that might harm the wire insulator.
