BS EN 61643-11-2012+A11:2018

Low-voltage surge protective devices

Part11: Surge protective devices connected to low-voltage power systems – Requirements and test methods

National foreword

This British Standard is the UK implementation of
EN 61643-11:2012+A11:2018.It is derived from IEC 61643-11:2011.
It supersedes BS EN 61643-11:2012, which is withdrawn.

The CENELEC common modifications to this document have been provided in their entirety in the European Endorsement Notice. BSI’s policy of providing consolidated content remains unchanged; however, in the interest of expediency, in this instance BSI have chosen to collate the relevant content at the beginning of this document.

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 2018
Published by BSI Standards Limited 2018

ISBN 978 0 580 93590 9

ICS 29.240.01;29.240.10

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 April 2018.

European foreword

This document (EN 61643-11:2012) consists of the text of IEC 61643-11:2011 prepared by IEC/SC 37″Low-voltage surge protective devices”, together with the common modifications prepared by CLC/TC 37A”Low voltage surge protective devices”.

The following dates are fixed:

•  latest date by which this document has to be
  implemented (dop) 2013-08-27
  at national level by publication of an identical
  national standard or by endorsement
• latest date by which the national standards conflicting
  with this document have to be withdrawn (dow) 2015-08-27

This document supersedes EN 61643-11:2002+A11:2007

The main changes with respect of EN 61643-11:2002+A11:2007 are the complete restructuring and improvement of the test procedures and test sequences.

Clauses, subclauses, notes, tables, figures and annexes which are additional to those in IEC 61643-11:2011are prefixed ” Z ” .

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

This standard covers the principle elements and objectives for electrical equipment designed for use within certain voltage limits (LVD-2014/35/EU).

Foreword to amendment A11

This document (EN 61643-11:2012/A11:2018) has been prepared by CLC/TC 37A “Low voltage surge protective devices

The following dates are fixed:

• latest date by which this document has to be (dop) 2018-09-23
  implemented at national level by publication of an
  identical national standard or by endorsement
• latest date by which the national standards conflicting (dow) 2021-03-23
  with this document have to be withdrawn

Annex ZC applies to portable SPDs classified as pluggable equipment type A according to EN 62368-1.

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

Modify the Scope as follows:

This part of EN 61643 is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are called Surge Protective Devices (SPD). These devices are designed to be connected to50 Hz a.c. power circuits, and equipment rated up to 1 000 V r.m.s. Performance characteristics, safety requirements, standard methods for testing and ratings are established. These devices contain at least one nonlinear component and are intended to limit surge voltages and divert surge currents.