HD 60364-4-43:2023

Low-voltage electrical installations - Part 4-43: Protection for safety - Protection against overcurrent

IEC 60364-4-43:2023 provides requirements for: - protection of live conductors, PEN conductors, PEM conductors, and PEL conductors against the harmful effects caused by overcurrent; - coordination of measures for protection against overcurrent. This fourth edition cancels and replaces the third edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the standard has been restructured, see Table 1 (Correspondence between IEC 60364‑4‑43:2008 and this document) below; b) the measure "automatic disconnection of supply" has been designated as the preferred measure for protection against overcurrent; c) all measures except the measure "automatic disconnection of supply" have been transferred into new normative annexes to indicate that these measures are usable in certain applications and under certain restricted conditions only (see Annex A, Annex B and Annex E); d) a new clause "Terms and definitions" has been added; e) new requirements have been added for the protection of the neutral or mid-point conductor (with and without triplen harmonics).

Errichten von Niederspannungsanlagen - Teil 4-43: Schutzmaßnahmen - Schutz bei Überstrom

Installations électriques à basse tension - Partie 4-43: Protection pour assurer la sécurité - Protection contre les surintensités

IEC 60364-4-43:2023 fournit les exigences pour: - la protection des conducteurs actifs, des conducteurs PEN, des conducteurs PEM et des conducteurs PEL contre les effets nuisibles des surintensités; - la coordination des mesures de protection contre les surintensités. Cette quatrième édition annule et remplace la troisième édition parue en 2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) la norme a été restructurée, voir le Tableau 1 (Correspondance entre l'IEC 60364-4-43:2008 et le présent document) ci-après; b) la mesure "déconnexion automatique de l'alimentation" a été adoptée comme mesure préférentielle pour la protection contre les surintensités; c) toutes les mesures, à l'exception de la mesure "déconnexion automatique de l'alimentation", ont été déplacées dans de nouvelles annexes normatives pour indiquer que ces mesures sont réservées à certaines applications dans des conditions restreintes (voir l'Annexe A, l'Annexe B et l'Annexe E); d) un nouvel article "Termes et définitions" a été ajouté; e) de nouvelles exigences ont été ajoutées pour la protection du conducteur neutre ou du conducteur de point milieu (avec et sans harmoniques de rang 3 et multiples de 3).

Nizkonapetostne električne inštalacije - 4-43. del: Zaščitni ukrepi - Zaščita pred nadtoki (IEC 60364-4-43:2023)

Standard IEC 60364-4-43:2023 podaja zahteve za:
– zaščito vodnikov pod napetostjo, vodnikov PEN, vodnikov PEM in vodnikov PEL pred škodljivimi učinki nadtokov;
– usklajevanje ukrepov za zaščito pred nadtokovi.
Četrta izdaja razveljavlja in nadomešča tretjo izdajo, objavljeno leta 2008. Ta izdaja je tehnično popravljena izdaja.
Ta izdaja v primerjavi s prejšnjo vključuje naslednje pomembne tehnične spremembe:
a) standard je preoblikovan, glej preglednico 1 (primerjajva med standardom IEC 60364‑4‑43:2008 in tem dokumentom) spodaj;
b) ukrep »samodejni odklop napajanja« je določen kot priporočljiv ukrep za zaščito pred nadtokovi;
c) vsi ukrepi razen ukrepa »samodejni izklop napajanja« so preneseni v nove normativne dodatke, kar označuje, da so ti ukrepi uporabni pri določenih načinih uporabe in samo pod določenimi omejenimi pogoji (glej dodatek A, dodatek B in dodatek E);
d) dodana je nova točka »Izrazi in definicije«;
e) dodane so nove zahteve za zaščito nevtralnega ali skupnega vodnika (s trojnimi harmoniki in brez njih).

General Information

• Status: Published
• Publication Date: 31-Aug-2023
• ICS: 29.120.50 - Fuses and other overcurrent protection devices
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: CLC/TC 64 - Electrical installations and protection against electric shock
• Drafting Committee: CLC/TC 64/WG 02 - Wiring systems - Protective measures against thermal effects, overcurrent
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 01-Sep-2023
• Completion Date: 01-Sep-2023
• Ref Project: SIST HD 60364-4-43:2023 - Low-voltage electrical installations - Part 4-43: Protection for safety - Protection against overcurrent (IEC 60364-4-43:2023)

Relations

• Replaces: HD 60364-4-43:2010 - Low-voltage electrical installations - Part 4-43: Protection for safety - Protection against overcurrent
• Effective Date: 16-Aug-2016

Standards Content (Sample)

SLOVENSKI STANDARD
SIST HD 60364-4-43:2023
01-november-2023
Nizkonapetostne električne inštalacije - 4-43. del: Zaščitni ukrepi - Zaščita pred
nadtoki (IEC 60364-4-43:2023)
Low-voltage electrical installations - Part 4-43: Protection for safety - Protection against
overcurrent (IEC 60364-4-43:2023)
Errichten von Niederspannungsanlagen - Teil 4-43: Schutzmaßnahmen - Schutz bei
Überstrom (IEC 60364-4-43:2023)
Installations électriques à basse tension - Partie 4-43: Protection pour assurer la sécurité
- Protection contre les surintensités (IEC 60364-4-43:2023)
Ta slovenski standard je istoveten z: HD 60364-4-43:2023
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST HD 60364-4-43:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST HD 60364-4-43:2023

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SIST HD 60364-4-43:2023


HARMONIZATION DOCUMENT HD 60364-4-43

DOCUMENT D'HARMONISATION

HARMONISIERUNGSDOKUMENT September 2023
ICS 91.140.50; 29.120.50 Supersedes HD 60364-4-43:2010
English Version
Low-voltage electrical installations - Part 4-43: Protection for
safety - Protection against overcurrent
(IEC 60364-4-43:2023)
Installations électriques à basse tension - Partie 4-43: Errichten von Niederspannungsanlagen - Teil 4-43:
Protection pour assurer la sécurité - Protection contre les Schutzmaßnahmen - Schutz bei Überstrom
surintensités (IEC 60364-4-43:2023)
(IEC 60364-4-43:2023)
This Harmonization Document was approved by CENELEC on 2023-08-23. CENELEC members are bound to comply with the
CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization Document at national level.
Up-to-date lists and bibliographical references concerning such national implementations may be obtained on application to the CEN-
CENELEC Management Centre or to any CENELEC member.
This Harmonization Document exists in three official versions (English, French, German).
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. HD 60364-4-43:2023 E

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SIST HD 60364-4-43:2023
HD 60364-4-43:2023 (E)
European foreword
The text of document 64/2591/FDIS, future edition 4 of IEC 60364-4-43, prepared by IEC/TC 64
"Electrical installations and protection against electric shock" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as HD 60364-4-43:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-05-23
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-08-23
document have to be withdrawn

This document supersedes HD 60364-4-43:2010 and all of its amendments and corrigenda (if any).
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60364-4-43:2023 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60269-2 NOTE Approved as HD 60269-2
IEC 60269-3 NOTE Approved as HD 60269-3
IEC 60269-4 NOTE Approved as EN 60269-4
IEC 60364-1 NOTE Approved as HD 60364-1
IEC 60364-4-41 NOTE Approved as HD 60364-4-41
IEC 60364-5-54:2011 NOTE Approved as HD 60364-5-54:2011 (not modified) +A11:2017
IEC 60898 (series) NOTE Approved as EN 60898 (series)
IEC 60909-0 NOTE Approved as EN 60909-0
IEC 60947-1 NOTE Approved as EN IEC 60947-1
IEC 60947-2 NOTE Approved as EN 60947-2
IEC 60947-3 NOTE Approved as EN IEC 60947-3
IEC 60947-6-2 NOTE Approved as EN IEC 6
...