{"id":248955,"date":"2024-10-19T16:24:21","date_gmt":"2024-10-19T16:24:21","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-627902020\/"},"modified":"2024-10-25T11:35:36","modified_gmt":"2024-10-25T11:35:36","slug":"bs-en-iec-627902020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-627902020\/","title":{"rendered":"BS EN IEC 62790:2020"},"content":{"rendered":"

IEC 62790:2020 is available as IEC 62790:2020 RLV<\/span> 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.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
5<\/td>\nAnnex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
9<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
12<\/td>\nFOREWORD <\/td>\n<\/tr>\n
14<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
16<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
20<\/td>\n4 Constructional requirements and performance
4.1 General <\/td>\n<\/tr>\n
21<\/td>\n4.2 Marking and identification
4.2.1 Identification
4.2.2 Marking <\/td>\n<\/tr>\n
22<\/td>\n4.2.3 Technical documentation
4.3 Protection against electric shock
4.4 Terminations, connecting devices and connection methods <\/td>\n<\/tr>\n
23<\/td>\n4.5 Connectors
4.6 Cables
4.7 Resistance to ageing
4.8 General design <\/td>\n<\/tr>\n
24<\/td>\n4.9 Degree of protection (IP)
4.10 Dielectric strength
4.11 Range of ambient temperature
4.12 Cable anchorage
4.13 Mechanical strength <\/td>\n<\/tr>\n
25<\/td>\n4.14 Insulation
4.14.1 Type of insulation
4.14.2 Basic insulation
4.14.3 Supplementary insulation
4.14.4 Double insulation
4.14.5 Reinforced insulation
Tables
Table 1 \u2013 Required type of insulation <\/td>\n<\/tr>\n
26<\/td>\n4.15 Clearances and creepage distances
4.15.1 Clearances
4.15.2 Creepage distances
Table 2 \u2013 Rated impulse voltages and minimum clearances <\/td>\n<\/tr>\n
27<\/td>\nTable 3 \u2013 Creepage distances for basic insulation <\/td>\n<\/tr>\n
28<\/td>\n4.16 Insulation parts
4.16.1 Outer accessible parts
4.16.2 Inner parts keeping active parts in position
4.17 Current carrying parts and resistance against corrosion <\/td>\n<\/tr>\n
29<\/td>\n4.18 Sealing
4.19 Bypass-diode
4.20 Knock-out inlets (outlets) intended to be removed by mechanical impact
5 Tests
5.1 General <\/td>\n<\/tr>\n
30<\/td>\n5.2 Preparation of specimens
Table 4 \u2013 Number of specimens <\/td>\n<\/tr>\n
31<\/td>\nTable 5 \u2013 Values of torque for screw-type clamping units <\/td>\n<\/tr>\n
32<\/td>\n5.3 Performance of tests
5.3.1 General
5.3.2 Durability of marking
5.3.3 Fixing of lid on rewirable junction box
5.3.4 Protection against electric shock <\/td>\n<\/tr>\n
33<\/td>\n5.3.5 Measurement of clearances and creepage distances
5.3.6 Dielectric strength
5.3.7 Resistance to corrosion
5.3.8 Mechanical strength at lower temperatures <\/td>\n<\/tr>\n
34<\/td>\n5.3.9 Thermal cycle test (IEC 60068-2-14:2009, Test Nb) <\/td>\n<\/tr>\n
35<\/td>\n5.3.10 Damp heat test
5.3.11 Weather resistance test
5.3.12 Flammability class <\/td>\n<\/tr>\n
36<\/td>\n5.3.13 Ball pressure test
5.3.14 Glow wire test
5.3.15 Resistance against ageing
5.3.16 Wet leakage current test <\/td>\n<\/tr>\n
37<\/td>\n5.3.17 Humidity freeze test
5.3.18 Bypass diode thermal test <\/td>\n<\/tr>\n
38<\/td>\n5.3.19 Test of terminations and connection methods <\/td>\n<\/tr>\n
39<\/td>\n5.3.20 Knock-out inlets (outlets) intended to be removed by mechanical impact
5.3.21 Test of cord anchorage <\/td>\n<\/tr>\n
40<\/td>\nTable 6 \u2013 Pull forces for cord anchorage <\/td>\n<\/tr>\n
41<\/td>\n5.3.22 Retention on the mounting surface
5.3.23 Reverse current test at junction box
Table 7 \u2013 Values for torsion test <\/td>\n<\/tr>\n
42<\/td>\n5.4 Test schedule
Table 8 \u2013 Marking, information, documentation, test group A <\/td>\n<\/tr>\n
43<\/td>\nTable 9 \u2013 Material test, test group B (single tests) <\/td>\n<\/tr>\n
44<\/td>\nTable 10 \u2013 Constructional requirements, test group C (single tests)
Table 11 \u2013 Mechanical tests, test group D (single tests) <\/td>\n<\/tr>\n
45<\/td>\nTable 12 \u2013 Test sequence I, test group E (tests to be performed consecutively in this order)
Table 13 \u2013 Test sequence II, test group F (tests to be performed consecutively in this order) <\/td>\n<\/tr>\n
46<\/td>\nTable 14 \u2013 Test sequence III, test group G (tests to be performed consecutively in this order)
Table 15 \u2013 Test sequence IV, test group H (tests to be performed consecutively in this order)
Table 16 \u2013 Reverse current test, test group I <\/td>\n<\/tr>\n
47<\/td>\nFigures
Figure 1 \u2013 Thermal cycling test \u2013 Temperature and applied current profile
Table 17 \u2013 Test sequence V, test group J (tests to be performed consecutively in this order) <\/td>\n<\/tr>\n
48<\/td>\nFigure 2 \u2013 Humidity-freeze cycle
Figure 3 \u2013 Typical arrangement for the cable anchorage pull test <\/td>\n<\/tr>\n
49<\/td>\nFigure 4 \u2013 Typical arrangement for torsion test
Figure 5 \u2013 Typical arrangement for flammability test in accordance with 5.3.12.2 <\/td>\n<\/tr>\n
50<\/td>\nFigure 6 \u2013 Measurement of voltage drop
Figure 7 \u2013 Bypass diode thermal test <\/td>\n<\/tr>\n
51<\/td>\nFigure 8 \u2013 Proper attachment of 5 N weight to junction box <\/td>\n<\/tr>\n
52<\/td>\nAnnex A (informative) Symbol “Do not disconnect under load”
Figure A.1 \u2013 Symbol “DO NOT DISCONNECT UNDER LOAD”
Figure A.2 \u2013 Symbol “DO NOT DISCONNECT UNDER LOAD” (IEC 60417-6070:2011-06) <\/td>\n<\/tr>\n
53<\/td>\nAnnex B (normative) Qualification of conformal coatings for protection against pollution
B.1 General
B.2 Technical properties
B.3 Qualification of coatings <\/td>\n<\/tr>\n
54<\/td>\nTable B.1 \u2013 Test parameters, test conditions and test procedures <\/td>\n<\/tr>\n
55<\/td>\nTable B.2 \u2013 Test sequence and conformity check (tests to be performed consecutively in this order) <\/td>\n<\/tr>\n
56<\/td>\nAnnex C (normative) Measurement of clearances and creepage distances
Table C.1 \u2013 Dimensions of X <\/td>\n<\/tr>\n
59<\/td>\nFigure C.1 \u2013 Examples of methods of measuring clearances and creepage distances <\/td>\n<\/tr>\n
60<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Junction boxes for photovoltaic modules. Safety requirements and tests<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n62<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":248958,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-248955","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/248955","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/248958"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=248955"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=248955"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=248955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}