I. Standards
What standards should be considered?
Based on standard practices, the relevant standards are as follows: IEC/EN 62790 (TÜV Rheinland – Testing and Certification of Photovoltaic Components / PV Junction Box per IEC/EN 62790); UL 3730 (TÜV Rheinland – PV Junction Box applicable to IEC/EN 62790 and UL 3730); EN 50548 (TÜV Rheinland China – PV Junction Box per EN 50548+A1+A2, IEC/EN 62790, and UL 3730); 2PfG 2305 (TÜV Rheinland – Smart PV Junction Box per 2 PfG 2305); IEC 62790:2020 (iteh.ai – IEC 62790:2020 Junction boxes for photovoltaic modules: Safety requirements and tests; full text preview available); and 2PfG 1915 (TÜV Rheinland China – 2PfG 1915/03.15 AC power connectors). In summary, the six key standards to check are: IEC/EN 62790, UL 3730, EN 50548, 2PfG 2305, IEC 62790:2020, and 2PfG 1915.
II.
Verification
What to look for during verification? Based on standard practice, the verification process involves checking the following six areas: Certificate Search (TÜV SÜD Product Service certificate inquiry system; a free database providing an information platform for buyers and consumers); Certificate Explorer (TÜV SÜD tool for locating product or component certifications via keyword or filtered search); Certification ID (search by ID number, holder name, product type, or model); Verification Code (TÜV SÜD Industrial Services certificate inquiry system requiring certificate number, holder, keyword, and verification code); Product Service (inquiry for certificates issued by TÜV SÜD Product Service, including for organizations in mainland China); and Free Access (online portal for checking TÜV SÜD Product Service certificates). Thorough verification covers these six aspects.
III.
Channels
What to look for regarding channels?
Based on industry practice, here are six channels to consult: IECQ (IECQ Online Certification System; certificates verifiable at certificates.iecq.org); the official IEC website (iec.ch; information on the standards organization); iteh.ai (standard previews and full text of IEC 62790:2020); TÜV SÜD (tuvsud.cn; certificate verification portal for organizations in mainland China); Certipedia (TÜV Rheinland Japan; accessible via www.certipedia.com; search for certified products, components, or companies using a 10-digit ID number); and TÜV Rheinland China (tuv.com/greater-china; PV component certification page and standards comparison table for connectors, junction boxes, and cables). These six channels provide comprehensive coverage.
IV.
Certification
What to look for in certification.
In terms of certification practice, the key standards are: IEC/EN 62790 (PV junction boxes); UL 3730 (PV junction boxes); EN 50548+A1+A2 (PV junction boxes); IEC/EN 62852 (PV connectors); EN 50618 (DC PV cables); and 2PfG 2305 (smart PV junction boxes). Comprehensive certification coverage entails addressing these six standards: IEC/EN 62790, UL 3730, EN 50548+A1+A2, IEC/EN 62852, EN 50618, and 2PfG 2305.
V.
Trends
What to look for regarding trends.
Regarding industry trends, here is what to look for: ID Numbers—TÜV Rheinland Japan (ID numbers obtained via Certipedia can be used in advertising catalogs and on websites; the 10-digit ID allows for the retrieval of information on certified products, components, and companies); Smart Boxes—TÜV Rheinland (Smart PV Junction Box certification based on 2PfG 2305); Dual Standards—TÜV Rheinland (junction boxes certified to both IEC/EN 62790 and UL 3730 standards); Free Database—TÜV SÜD (a free database providing an information platform for buyers and consumers); Keywords—TÜV SÜD (search starts with a single keyword); Global Reach—TÜV Rheinland (global leader in testing and certification of low-voltage apparatus; third-party certification for almost all low-voltage electrical devices). These six aspects—ID numbers, smart boxes, dual standards, free databases, keywords, and global reach—capture the key trends.
Conclusion
How do you check for PV junction box IEC certification?
The answer lies in examining five key areas: standards, the search process, channels, certification details, and industry trends.
Standards—TÜV Rheinland (PV junction boxes certified to IEC/EN 62790), TÜV Rheinland (junction boxes certified to UL 3730), TÜV Rheinland China (junction boxes certified to EN 50548+A1+A2), TÜV Rheinland (smart junction boxes certified to 2PfG 2305), iteh.ai (IEC 62790:2020 junction box safety requirements and tests), TÜV Rheinland China (AC connectors certified to 2PfG 1915); Inquiries—TÜV SÜD (free certificate inquiry database), TÜV SÜD (Certificate Explorer for locating product component certifications), TÜV SÜD (filtering by certification ID, certificate holder, or product model), TÜV SÜD (Industrial Services certificate inquiry system), TÜV SÜD (certificate inquiry for certified organizations in mainland China), TÜV SÜD (Product Service certificate online portal); Channels—IECQ (IECQ online certification and quality assessment system), IEC (International Electrotechnical Commission – iec.ch), iteh.ai (standard preview platform), TÜV SÜD (certificate inquiry portal at tuvsud.cn), TÜV Rheinland Japan (Certipedia: search certified products via 10-digit ID), TÜV Rheinland (PV component certification page at tuv.com); Certification—TÜV Rheinland (junction boxes certified to IEC/EN 62790 and UL)
…UL 3730, TÜV Rheinland), TÜV Rheinland (connectors per IEC/EN 62852 plus UL 6703, TÜV Rheinland), TÜV Rheinland (DC cables per EN 50618 or IEC 62930, TÜV Rheinland), TÜV Rheinland (smart junction boxes per 2PfG 2305, TÜV Rheinland), TÜV Rheinland China (AC cables per 2PfG 1940, TÜV Rheinland), TÜV Rheinland (PV string fuses per 2PfG 2380, TÜV Rheinland); Trends—TÜV Rheinland Japan (Certipedia ID numbers usable for advertising catalogs and web pages, TÜV Rheinland), TÜV Rheinland (rise of smart PV junction box certification, TÜV Rheinland), TÜV Rheinland (dual-standard certification: IEC/EN 62790 plus UL 3730, TÜV Rheinland), TÜV SÜD (free database service for buyers and consumers, TÜV SÜD), TÜV SÜD (search via single keyword, TÜV SÜD), TÜV Rheinland (global leader in third-party certification for low-voltage equipment, TÜV Rheinland).
According to industry practice, here is the bottom line on PV junction boxes: check IEC/EN 62790 for standards, UL 3730 for dual-standard compliance, the TÜV SÜD free database for inquiries, IECQ for channels, and the 10-digit Certipedia ID for trends—master these five aspects, and you can rest easy regarding PV junction boxes.
