BS EN 61643-31:2019

Low-voltage surge protective devices

Part 31: Requirements and test methods for SPDs for photovoltaic installations

National foreword

This British Standard is the UK implementation of EN 61643-31:2019.
It is derived from IEC 61643-31:2018. It supersedes
BS EN 50539-11:2013+A1:2014, which is withdrawn.

The CENELEC common modifications have been implemented at the appropriate places in the text. The start and finish of each common modification is indicated in the text by tags C.

The UK participation in its preparation was entrusted to Technical Committee PEL/37/1, Surge Arresters – Low Voltage.

A list of organizations represented on this committee can be obtained on request to its secretary.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

The British Standards Institution 2019
Published by BSI Standards Limited 2019

ISBN 978 0 580 87525 0

ICS 29.120.50

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2019.

European foreword

The text of document 37A/306/FDIS, future edition 1 of IEC 61643-31, prepared by SC 37A: “Low-voltage surge protective devices” of IEC/TC 37: “Surge arresters” was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61643-31:2019.

A draft amendment, which covers common modifications to IEC 61643-31, was prepared by CLC/TC 37A”Low-voltage surge protective devices” and approved by CENELEC.

The following dates are fixed

· latest date by which this document (dop) 2019-11-03
has to be implemented at nationa
level by publication of an identica
national standard or by endorsement

· latest date by which the national (dow) 2022-05-03
standards conflicting with this
document have to be withdrawn

EN 61643-31:2019 supersedes EN 50539-11:2013.

Clauses, subclauses, notes, tables, figures and annexes which are additional to those in IEC 61643-31:2019 are prefixed “Z”.

EN 61643-31:2019 includes the following significant technical changes with respect to EN 50539-11:2013: It includes also quidance for verification of conformity for products already tested according EN 50539-11:2013

The main changes with respect of EN 50539-11:2013 are the complete restructuring and improvement of the test procedures and test sequences.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For the ationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document.