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IEC 62790-ed.2.0
Junction boxes for photovoltaic modules - Safety requirements and tests
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STANDARD published on 15.7.2020
The information about the standard:
Designation standards: IEC 62790-ed.2.0
Publication date standards: 15.7.2020
SKU: NS-1000981
The number of pages: 109
Approximate weight : 358 g (0.79 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 62790-ed.2.0 :
IEC 62790:2020 is available as IEC 62790:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 62790:2020 describes safety requirements, constructional requirements and tests for junction boxes up to 1 500 V DC for use on photovoltaic modules in accordance with class II of IEC 61140:2016. This document applies also to enclosures mounted on PV-modules containing electronic circuits for converting, controlling, monitoring or similar operations. Additional requirements concerning the relevant operations are applied under consideration of the environmental conditions of the PV-modules. This document does not apply to the electronic circuits of these devices, for which other IEC standards apply. This second edition cancels and replaces the first edition published in 2014. This edition includes the following significant technical changes with respect to the previous edition: - Modifications in normative references and terms and definitions; - Improvement of declaration of categories for junction boxes in 4.1; - Clarification for ambient temperature in 4.1; - Addition of requirement to provide information concerning RTE/RTI or TI in 4.2; - Reference to IEC 62930 instead of EN 50618 in 4.6; - Addition of "Functional insulation" in Table 1; - Addition of "Distance through cemented joints" in Table 3; - Correction of procedure of process to categorize material groups (deletion of PTI) in 4.15.2.3; - Requirement for approval of RTE/RTI or TI for insulation parts in 4.16.1 and 4.16.2; - Change of requirements concerning electrochemical potential in 4.17.2; - Clarification for IP-test in 5.3.4.2; - Addition of test voltage for cemented joints in 5.3.6 and 5.3.16; - Addition of detailled description on how to prepare the test sample for the thermal cycle test in 5.3.9.1; - New test procedure for bypass diode thermal test (5.3.18) in accordance with MQT 18.1 of IEC 61215-2:2016; - New test procedure for reverse overload current test in 5.3.23; - New Figure 1 for thermal cycle test. IEC 62790:2020 est disponible sous forme de IEC 62790:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis ledition precedente. L’IEC 62790:2020 decrit les exigences de securite, les exigences de construction et les essais relatifs aux boites de jonction jusqu’a 1 500 V en courant continu utilisees sur des modules photovoltaiques conformes a la classe II de l’IEC 61140:2016. Le present document s’applique egalement aux enveloppes montees sur des modules photovoltaiques comportant des circuits electroniques pour la conversion, le controle, la surveillance ou operations similaires. Des exigences supplementaires concernant les operations correspondantes sont appliquees en considerant les conditions d’environnement des modules photovoltaiques. Le present document ne s’applique pas aux circuits electroniques de ces dispositifs pour lesquels d’autres normes IEC s’appliquent. Cette deuxieme edition annule et remplace la premiere edition parue en 2014. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: - Modifications des references normatives et des termes et definitions; - Amelioration de la categorisation des boites de jonction en 4.1; - Clarification de la temperature ambiante en 4.1; - Ajout de lexigence prevoyant de fournir les indices RTE/RTI ou IT en 4.2; - Reference a l’IEC 62930 a la place de la reference a l’EN 50618 en 4.6; - Ajout de "lisolation fonctionnelle" dans le Tableau 1; - Ajout de "ligne de fuite entre les bords du joint scelle" dans le Tableau 3; - Correction de la procedure du processus de categorisation des groupes de materiaux (suppression de l’ITC) au 4.15.2.3; - Exigence dapprobation des indices RTE/RTI ou IT pour les parties isolantes en 4.16.1 et 4.16.2; - Modification des exigences concernant le potentiel electrochimique en 4.17.2; - Clarification des essais de verification du code IP au 5.3.4.2; - Ajout de la tension dessai pour les joints scelles en 5.3.6 et 5.3.16; - Ajout de la description detaillee sur la facon de preparer les eprouvettes pour lessai de cycle thermique en 5.3.9.1; - Nouvelle procedure dessai pour lessai thermique la diode de derivation (5.3.18) conformement au MQT 18.1 de l’IEC 61215-2: 2016; - Nouvelle procedure dessai pour lessai de courant de surcharge inverse au 5.3.23; - Nouvelle Figure 1 pour lessai de cycle thermique.
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