FprEN IEC 61643-01:2024

Low-voltage surge protective devices - Part 01: General Requirements and test methods

IEC 61643-01: 2024 contains the common requirements for all SPDs. This document is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages, hereafter referred to as Surge Protective Devices (SPDs). SPDs are intended to be connected to circuits or equipment rated up to 1 000 V AC (RMS) or 1 500 V DC. Performance and safety requirements, tests and ratings are specified in this document. SPDs contain at least one nonlinear component and are intended to limit surge voltages and divert surge currents. This document, together with IEC 61643-11:— (second edition), cancels and replaces the first edition of IEC 61643-11 published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the first edition of IEC 61643-11: a) Clarification on test application either to a complete SPD, to a "mode of protection", or to a complete "SPD assembly"; b) Additional measurement of voltage protection level on "combined modes of protection" between live conductors and PE (see new Annex F); c) Additional duty test for T1 SPD and T2 SPD with follow current to check for increased follow current at lower impulse current amplitude (see 9.3.5.5); d) Modified and amended short circuit current test requirements to better cover up-to-date internal SPD disconnector technologies (see 9.3.6.3); e) Improved dielectric test requirements for the SPD’s main circuits and added dielectric test requirements for "electrically separated circuits" (see 9.3.7 and 9.3.8); f) Additional clearance requirements for "electrically separated circuits" (see 9.4.4); g) Additional information and details for SPDs for DC installations.

Überspannungsschutzgeräte für Niederspannung - Teil 1: Allgemeine Anforderungen und Prüfverfahren

Parafoudres basse tension - Partie 01: Exigences générales et méthodes d’essai

L'IEC 61643-01:2024 contient les exigences communes à tous les SPD. Le présent document est applicable aux dispositifs de protection contre les effets indirects et directs de la foudre ou contre les surtensions transitoires, ci-après dénommés parafoudres (SPD). Les parafoudres sont destinés à être connectés à des circuits ou à des équipements de tension assignée allant jusqu’à 1 000 V efficaces en courant alternatif ou 1 500 V en courant continu. Les exigences de performance et de sécurité, les essais et les valeurs assignées sont spécifiés dans le présent document. Les parafoudres comportent au moins un composant non linéaire et sont utilisés pour limiter les surtensions et écouler les courants de foudre. Le présent document, conjointement avec l’IEC 61643-11:— (deuxième édition), annule et remplace la première édition de l’IEC 61643-11 parue en 2011. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures importantes suivantes par rapport à la première édition de l’IEC 61643-11: a) clarification de l’application des essais soit à un parafoudre complet, soit à un "mode de protection", soit à un "jeu de parafoudre" complet; b) ajout d’une mesure du niveau de protection en tension sur les "modes de protection combinés" entre les conducteurs actifs et le PE (voir la nouvelle Annexe F); c) ajout d’un essai de fonctionnement pour les parafoudres T1 et T2 avec courant de suite pour vérifier l’augmentation du courant de suite à une amplitude de courant de choc plus faible (voir 9.3.5.5); d) modification des exigences relatives à l’essai de comportement vis-à-vis des courants de court-circuit, afin de mieux couvrir les technologies modernes de déconnecteurs internes de parafoudre (voir 9.3.6.3); e) amélioration des exigences relatives à l’essai diélectrique pour les circuits principaux d’un parafoudre et ajout d’exigences relatives à l’essai diélectrique pour les "circuits électriquement séparés" (voir 9.3.7 et 9.3.8); f) ajout d’exigences en matière de distance d’isolement pour les "circuits électriquement séparés" (voir 9.4.4); g) ajout d’informations et de détails concernant les parafoudres pour les installations à courant continu.

Nizkonapetostne naprave za zaščito pred prenapetostnimi udari - 1. del: Splošne zahteve in preskusne metode

General Information

• Status: Not Published
• Publication Date: 27-Feb-2025
• ICS: 29.240.10 - Substations. Surge arresters
• Technical Committee: CLC/TC 37A - Low voltage surge protective devices
• Drafting Committee: IEC/SC 37A - IEC_SC_37A
• Current Stage: 5060 - Voting results sent to TC, SR - Formal Approval
• Start Date: 20-Sep-2024
• Due Date: 20-Sep-2024
• Completion Date: 20-Sep-2024
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: kSIST FprEN IEC 61643-01:2024 - Low-voltage surge protective devices - Part 01: General Requirements and test methods

Relations

• Amended By: FprEN IEC 61643-01:2024/FprAA:2024 - Low-voltage surge protective devices - Part 01: General Requirements and test methods
• Effective Date: 08-Aug-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 61643-01:2024
01-januar-2024
Nizkonapetostne naprave za zaščito pred prenapetostnimi udari - 1. del: Splošne
zahteve in preskusne metode
Low-voltage surge protective devices - Part 01: General requirements and test methods
Ta slovenski standard je istoveten z: prEN IEC 61643-01:2023
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
29.240.10 Transformatorske postaje. Substations. Surge arresters
Prenapetostni odvodniki
oSIST prEN IEC 61643-01:2024 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 61643-01:2024
oSIST prEN IEC 61643-01:2024
37A/401/CDV
COMMITTEE DRAFT FOR VOTE (CDV)

PROJECT NUMBER:
IEC 61643-01 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-11-03 2024-01-26
SUPERSEDES DOCUMENTS:
37A/345A/CC, 37A/366/CD
IEC SC 37A : LOW-VOLTAGE SURGE PROTECTIVE DEVICES
SECRETARIAT: SECRETARY:
United States of America Mr Casey Granata
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

SC 37B,TC 64,TC 81,TC 82,TC 109
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the
final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Low-voltage surge protective devices - Part 01: General Requirements and test methods

PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
Annex F, Annex G and Annex I from 37A/366/CD were decided to be shifted to future IEC TR 61643-03,
which should be distributed as a DTR in parallel to this CDV.

download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for
any other purpose without permission in writing from IEC.

oSIST prEN IEC 61643-01:2024
IEC CDV 61643-01/Ed1 © IEC 2023 2 37A/401/CDV

1 CONTENTS
3 FOREWORD . 7
4 INTRODUCTION . 9
5 1 Scope . 10
6 2 Normative references . 10
7 3 Terms, definitions and abbreviated terms . 12
8 3.1 General . 12
9 3.2 Terms and definitions. 12
10 3.3 Acronyms / Symbols . 22
11 4 Classification . 23
12 4.1 General . 23
13 4.2 Number of ports . 24
14 4.2.1 One . 24
15 4.2.2 Two . 24
16 4.3 SPD design . 24
17 4.3.1 Voltage switching . 24
18 4.3.2 Voltage limiting . 24
19 4.3.3 Combination . 24
20 4.4 Mode of protection design . 24
21 4.4.1 Voltage switching . 24
22 4.4.2 Voltage limiting . 24
23 4.4.3 Combination . 24
24 4.5 Type of SPD . 24
25 4.6 Location . 24
26 4.6.1 Indoor . 24
27 4.6.2 Outdoor . 24
28 4.7 Accessibility . 25
29 4.7.1 Accessible . 25
30 4.7.2 Inaccessible . 25
31 4.8 Mounting method . 25
32 4.8.1 Fixed . 25
33 4.8.2 Portable . 25
34 4.9 Location of disconnector (including overcurrent protection) . 26
35 4.9.1 Internal . 26
36 4.9.2 External . 26
37 4.9.3 Both (internal and external) . 26
38 4.9.4 None . 26
39 4.10 Degree of protection provided by enclosures according to IEC 60529 (IP
40 code) . 26
41 4.11 Temperature and humidity range. 26
42 4.11.1 Normal . 26
43 4.11.2 Extended . 26
44 4.12 SPD modes of protection . 26
45 4.12.1 SPD providing a single mode of protection . 26
46 4.12.2 Multimode SPD . 26
47 4.13 End of life mode of the SPDA . 26
48 4.13.1 Open-circuit mode (OCM) . 26

oSIST prEN IEC 61643-01:2024
IEC CDV 61643-01/Ed1 © IEC 2023 3 37A/401/CDV

49 4.13.2 Short-circuit mode (SCM) . 26
50 4.14 Short-Circuit protection function for OCM end of life mode . 26
51 4.14.1 Internal . 26
52 4.14.2 External . 26
53 5 Void . 27
54 6 Marking and other product information . 27
55 6.1 General . 27
56 6.2 List of items . 27
57 6.3 Information about status indicator . 29
58 7 Service conditions . 29
59 7.1 Voltage . 29
60 7.2 Air pressure and altitude . 29
61 7.3 Temperatures . 29
62 7.4 Humidity . 29
63 8 Requirements . 30
64 8.1 General requirements . 30
65 8.2 Marking . 30
66 8.3 Electrical requirements . 30
67 8.3.1 Protection against electric shock . 30
68 8.3.2 Continuous current I . 31
C
69 8.3.3 Protective conductor current I . 31
PE
70 8.3.4 Measured limiting voltage . 31
71 8.3.5 Operating duty . 31
72 8.3.6 Safety performance of overstressed SPDs . 32
73 8.3.7 Insulation resistance . 33
74 8.3.8 Dielectric withstand . 33
75 8.3.9 Behaviour under temporary overvoltages . 33
76 8.4 Mechanical requirements . 33
77 8.4.1 Mounting . 33
78 8.4.2 Screws, current carrying parts and connections . 34
79 8.4.3 External connections . 34
80 8.4.4 Air clearances and creepage distances . 35
81 8.4.5 Mechanical strength . 35
82 8.5 Environmental and material requirements . 36
83 8.5.1 Protection provided by enclosure (IP code) . 36
84 8.5.2 Heat resistance . 36
85 8.5.3 Resistance to abnormal heat and fire . 36
86 8.5.4 Tracking resistance . 36
87 8.5.5 Ageing behaviour under damp heat . 36
88 8.5.6 Electromagnetic compatibility . 36
89 8.6 Additional requirements for specific SPD designs . 37
90 8.6.1 Two port SPDs and one port SPDs with separate input/output
91 connections . 37
92 8.6.2 Environmental stress for outdoor SPDs . 37
93 8.6.3 SPDs with electrically separated circuits . 37
94 8.6.4 Total Discharge Current I , if declared by the manufacturer . 37
Total
95 8.6.5 Two port SPDs . 38
96 8.6.6 Short-circuiting SPDs . 38

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IEC CDV 61643-01/Ed1 © IEC
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