SIST HD 60364-4-443:2016

Low-voltage electrical installations -- Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances - Clause 443: Protection against overvoltages of atmospheric origin or due to switching

The rusels of this part of IEC 60364 are intended to provide for the safety of persons and equipment in a LV system in the event of a fault between the HV system and earth in the HV part of transformer stations which supply low-voltage systems.

Errichten von Niederspannungsanlagen - Teil 4-44: Schutzmaßnahmen - Schutz bei Störspannungen und elektromagnetischen Störgrößen - Abschnitt 443: Schutz bei transienten Überspannungen infolge atmosphärischer Einflüsse oder von Schaltvorgängen

Installations électriques à basse tension - Partie 4-44: Protection pour assurer la sécurité - Protection contre les perturbations de tension et les perturbations électromagnétiques -- Article 443: Protection contre les surtensions d'origine atmosphérique ou dues à des manoeuvres

Les règles de l’IEC 60364-4-44 sont destinées à donner des exigences pour la sécurité des installations électriques en cas de perturbations de tension ou d’influences électromagnétiques dues à des raisons diverses.
Les règles de l’IEC 60364-4-44 ne s’appliquent pas aux réseaux de distribution d’énergie public ou à la génération de puissance et à sa transmission (voir le domaine d’application de l’IEC 60364-1) bien que de telles perturbations peuvent être transmises dans ou entre des installations électriques par ces réseaux.
L'Article 443 spécifie les exigences pour la protection des installations électriques contre les surtensions transitoires d'origine atmosphérique transmises par les réseaux de distribution y compris les coups de foudre directs touchant les réseaux d'alimentation électrique et contre les surtensions de manoeuvre. Les exigences pour la protection contre les surtensions transitoires dues à des coups de foudre directs ou proches affectant une structure ne sont pas données à l'Article 443.
NOTE    Pour la gestion des risques dans le cadre de la protection contre les surtensions transitoires dues à des coups de foudre directs ou proches affectant une structure, voir l'IEC 62305-2.

Nizkonapetostne električne inštalacije - 4-44. del: Zaščitni ukrepi - Zaščita pred napetostnimi in elektromagnetnimi motnjami - 443. točka: Zaščita pred atmosferskimi in stikalnimi prenapetostmi

Pravila v tem delu standarda IEC 60364 so namenjena zagotavljanju varnosti oseb in opreme v nizkonapetostnem sistemu v primeru okvare med visokonapetostnim sistemom in ozemljitvijo v visokonapetostnem delu transformatorskih postaj, ki oskrbujejo nizkonapetostne sisteme.

General Information

• Status: Published
• Publication Date: 14-Mar-2016
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: ELI - Electrical and communication installations
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 10-Mar-2016
• Due Date: 15-May-2016
• Completion Date: 15-Mar-2016
• Directive: TRRTP131 - Tehnična smernica TSG-N-002:2009 - Nizkonapetostne električne inštalacije
• Ref Project: HD 60364-4-443:2016 - Low-voltage electrical installations - Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances - Clause 443: Protection against transient overvoltages of atmospheric origin or due to switching

Relations

• Replaces: SIST HD 60364-4-443:2007 - Electrical installations of buildings -- Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances -- Clause 443: Protection against overvoltages of atmospheric origin or due to switching
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST HD 60364-4-443:2016
01-april-2016
1DGRPHãþD
SIST HD 60364-4-443:2007
1L]NRQDSHWRVWQHHOHNWULþQHLQãWDODFLMHGHO=DãþLWQLXNUHSL=DãþLWDSUHG
QDSHWRVWQLPLLQHOHNWURPDJQHWQLPLPRWQMDPLWRþND=DãþLWDSUHG
DWPRVIHUVNLPLLQVWLNDOQLPLSUHQDSHWRVWPL
Low-voltage electrical installations -- Part 4-44: Protection for safety - Protection against
voltage disturbances and electromagnetic disturbances - Clause 443: Protection against
overvoltages of atmospheric origin or due to switching
Installations électriques à basse tension - Partie 4-44: Protection pour assurer la sécurité
- Protection contre les perturbations de tension et les perturbations électromagnétiques -
- Article 443: Protection contre les surtensions d'origine atmosphérique ou dues à des
manoeuvres
Ta slovenski standard je istoveten z: HD 60364-4-443:2016
ICS:
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST HD 60364-4-443:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST HD 60364-4-443:2016

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SIST HD 60364-4-443:2016


HARMONIZATION DOCUMENT HD 60364-4-443

DOCUMENT D'HARMONISATION

HARMONISIERUNGSDOKUMENT
February 2016
ICS 33.100.10; 33.100.20; 91.140.50 Supersedes HD 60364-4-443:2006
English Version
Low-voltage electrical installations - Part 4-44: Protection for
safety - Protection against voltage disturbances and
electromagnetic disturbances - Clause 443: Protection against
transient overvoltages of atmospheric origin or due to switching
(IEC 60364-4-44:2007/A1:2015 , modified)
Installations électriques à basse tension - Partie 4-44: Errichten von Niederspannungsanlagen - Teil 4-44:
Protection pour assurer la sécurité - Protection contre les Schutzmaßnahmen - Schutz bei Störspannungen und
perturbations de tension et les perturbations elektromagnetischen Störgrößen - Abschnitt 443: Schutz
électromagnétiques - Article 443: Protection contre les bei transienten Überspannungen infolge atmosphärischer
surtensions transitoires d'origine atmosphérique ou dues à Einflüsse oder von Schaltvorgängen
des manoeuvres (IEC 60364-4-44:2007/A1:2015 , modifiziert)
(IEC 60364-4-44:2007/A1:2015 , modifiée)
This Harmonization Document was approved by CENELEC on 2015-12-14. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. HD 60364-4-443:2016 E

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SIST HD 60364-4-443:2016
HD 60364-4-443:2016
European foreword
The text of document 64/2032/FDIS, future IEC 60364-4-44:2007/A1 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 60364-4-443:2016.
A draft amendment, which covers common modifications to IEC 60364-4-44:2007/A1:2015
(64/2032/FDIS), was prepared by CLC/TC 64 “Electrical installations and protection against electric
shock” and approved by CENELEC.
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2016-12-14
national level by publication of an identical national
standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2018-12-14
document have to be withdrawn
HD 60364-4-443:2016 supersedes HD 60364-4-443:2006.
HD 60364-4-443:2016 includes the following significant technical changes with respect to the previous
edition: this document constitutes a complete structural and technical revision of HD 60364-4-443:2006.
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.
Clauses, subclauses, notes, tables, figures and annexes which are additional to those in
IEC 60364-4-44:2007/A1:2015 are prefixed “Z”.
2

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SIST HD 60364-4-443:2016
HD 60364-4-443:2016
Endorsement notice
The text of the International Standard IEC 60364-4-44:2007/A1:2015 was approved by CENELEC as a
Harmonization Document with agreed common modifications.
COMMON MODIFICATIONS
440.2 Normative references
Replace the text of 440.2 by the following:
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 60038, CENELEC standard voltages (IEC 60038)
HD 60364-5-534:2016, Low-voltage electrical installations – Part 5-53: Selection and erection of electrical
equipment – Isolation, switching and control – Clause 534: Devices for protection against transient
overvoltages (IEC 60364-5-53:2001/A2:2015, mod.)
EN 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1: Principles,
requirements and tests (IEC 60664-1)
EN 61000-4-5, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement techniques –
Surge immunity test (IEC 61000-4-5)
EN 61643-11, Low-voltage surge protective devices – Part 11: Surge protective devices connected to
low-voltage power systems – Requirements and test methods (IEC 61643-11)
CLC/TS 61643-22, Low-voltage surge protective devices – Part 22: Surge protective devices connected
to telecommunications and signalling networks – Selection and application principles (IEC 61643-22)
EN 62305-2, Protection against lightning – Part 2: Risk management (IEC 62305-2)
IEC/TR 60664-2-1:2011, Insulation coordination for equipment within low-voltage systems – Part 2-1:
Application guide – Explanation of the application of the IEC 60664 series, dimensioning examples and
dielectric testing
443.4 Overvoltage control
Add after the third indent the following fourth indent:
z1) a large number of individuals, e.g. large buildings, offices, schools.
3

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SIST HD 60364-4-443:2016
HD 60364-4-443:2016
443.6.2 Rated impulse withstand voltages of equipment and overvoltage categories
Replace Table 443.2 as follows:
Table 443.2 — Required rated impulse voltage of equipment (U )
W
Nominal Voltage line to Required rated impulse
b
voltage of the neutral derived voltage of equipment
a
installation from nominal
voltages a.c. or
d.c. up to and
including
V V kV
  Overvoltage Overvoltage Overvoltage Overvoltage
category IV category III category II category I
(equipment (equipment (equipment (equipment
with very high with high rated with normal with reduced
rated impulse impulse rated impulse rated impulse
voltage) voltage) voltage) voltage)
  For example, For example, For example, For example,
energy meter, distribution distribution sensitive
telecontrol boards, domestic electronic
systems switches, appliances, tools equipment
socket-outlets
120/208 150 4 2,5 1,5 0,8
c
230/400
300 6 4 2,5 1,5
b
277/480
400/690 600 8 6 4 2,5
1 000 1000 12 8 6 4
d d d d
1 500 d.c. 1 500 d.c. 15 10 8 6
a
According to EN 60038.
b
This rated impulse withstand voltage is applied between live conductors and PE.
c
For IT systems operations at 220–240 V, the 230/400 row shall be used, due to the voltage to earth at the earth fault on one
line.
d
Recommended values based on IEC/TR 60664–2-1:2011, Annex D.
4

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SIST HD 60364-4-443:2016
HD 60364-4-443:2016
Replace Annex C by the following Annexes ZA and ZB:
Annex ZA
(normative)

Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over a long
period, e.g. climatic conditions, electrical earthing conditions.
NOTE If it affects harmonization, it forms part of the Harmonization Document.
For the countries in which the relevant special national conditions apply these provisions are normative,
for other countries they are informative.
Clause Special national condition
443.1 Norway
In Norway, every electrical installation shall be protected by a SPD.
443.4 Finland
In Finland protection against transient overvoltage is not mandatory if an installation is
supplied by underground cable.
When the installation is supplied by overhead line, a risk assessment should be
performed.
443.4 Germany
The following content:
For all other cases, a risk assessment according to 443.5 shall be performed in order to
determine if protection against transient overvoltage is required. If the risk assessment is
not performed, the electrical installation shall be provided with protection against
transient overvoltage. However the transient overvoltage protection is not required for
single dwelling units where total economic value of the electrical installation to be
protected is less than 5 times the economic value of the SPD located at the origin of the
installation.
is replaced as follows:
Protection against transient overvoltage shall be provided where the consequence
caused by overvoltage affects individuals e.g. in residential buildings and small offices if
overvoltage category I or II equipment is installed.
Protection against transient overvoltage should be also considered for buildings with fire
risks.
5

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SIST HD 60364-4-443:2016
HD 60364-4-443:2016
Clause Special national condition
443.4 United Kingdom
The following content:
For all other cases, a risk assessment according to 443.5 shall be performed in order to
determine if protection against transient overvoltage is required. If the risk assessment is
not performed, the electrical installation shall be provided with protection against
transient overvoltage. However the transient overvoltage protection is not required for
single dwelling units where total economic value of the electrical installation to be
protected is less than 5 times the economic value of the SPD located at the origin of the
installation.
is replaced as follows:
For all other cases, a risk assessment according to 443.5 shall be performed in order to
determine if protection against transient overvoltage is required. If the risk assessment is
not performed, the electrical installation shall be provided with protection against
transient overvoltage, except for single dwelling units where the total value of the
installation and equipment therein, does not justify such protection.
443.4 United Kingdom
The last paragraph of Clause 443.4 is not applicable in the United Kingdom as it is
considered out of scope because it will involve work above 1 000 V.
443.5 Germany
This clause is not applied in Germany.
443.5 United Kingdom
In the United Kingdom, the coefficient F shall be taken equal to 1 for all installations.
Annex A Germany
Annex A is not applied in Germany.
Annex B Germany
Annex B is normative in Germany.
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SIST HD 60364-4-443:2016
HD 60364-4-443:2016
Annex ZB
(informative)

A-deviations
A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the
competence of the CENELEC national member.
This Harmonization Document does not fall under any Directive of the EU.
In the relevant CENELEC countries these A-deviations are valid instead of the provisions of the
Harmonization Document until they have been removed.
Clause Deviation
General Austria
Electrotechnical Ordinance 2002 – Federal gazette Part II No. 222/2002
amended by
Electrotechnical Ordinance 2002/A1 – Federal gazette Part II No. 33/2006
amended by
Electrotechnical Ordinance 2002/A2 – Federal gazette Part II No. 223/2010):
Protection of electrical installations against transient overvoltages by means of Surge
Protective Devices (SPDs) is mandatory for all installations.
443.4 Spain
In Spain, according to the Royal Decree 1053/2014, Clause 6.4 of the ITC-BT-52, all the
circuits intended to supply energy to electric vehicles must be protected against transient
overvoltages.
7

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SIST HD 60364-4-443:2016
HD 60364-4-443:2016
Replace the Bibliography as follows:
Bibliography
IEC 60050-826:2004, International Electrotechnical Vocabulary – Part 826: Electrical installations

8

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SIST HD 60364-4-443:2016




IEC 60364-4-44

®


Edition 2.0 2015-09




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside



A MENDMENT 1

AM ENDEMENT 1





Low-voltage electrical installations –

Part 4-44: Protection for safety – Protection against voltage disturbances and

electromagnetic disturbances




Installations électriques à basse tension –

Partie 4-44: Protection pour assurer la sécurité – Protection contre les


perturbations de tension et les perturbations électromagnétiques













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 33.100.10; 33.100.20; 91.140.50 ISBN 978-2-8322-2882-1



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SIST HD 60364-4-443:2016
– 2 – IEC 60364-4-44:2007/AMD1:2015
© IEC 2015
FOREWORD
This amendment has been prepared by IEC technical committee 64: Electrical installations
and protection against electric shock.
The text of this amendment is based on the following documents:
FDIS Report on voting
64/2032/FDIS 64/2073/RVD

Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

_____________
FOREWORD
Add the following new text:
The reader's attention is drawn to the fact that Annex C lists all of the “in-some-country”
clauses on differing practices of a less permanent nature relating to the subject of this
standard.
440.2 Normative references
Replace the date of IEC 60038 from "1983" to "2009".
Add the following new references:
IEC 60364-5-53:2001, Electrical installations of buildings - Part 5-53: Selection and erection
of electrical equipment - Isolation, switching and control
IEC 60364-5-53:2001/AMD1:2002
IEC 60364-5-53:2001/AMD2:2015

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SIST HD 60364-4-443:2016
IEC 60364-4-44:2007/AMD1:2015 – 3 –
© IEC 2015
IEC 61643-11:2011, Low-voltage surge protective devices – Part 11: Surge protective devices
connected to low-voltage power systems – Requirements and test methods
IEC 61643-22, Low-voltage surge protective devices – Part 22: Surge protective devices
connected to telecommunications and signalling networks – Selection and application
principles
IEC 62305 (all parts), Protection against lightning
443 Protection against overvoltages of atmospheric origin or due to switching
Replace the existing Clause 443, including its title, by the following new title and text:
443 Protection against transient overvoltages of atmospheric origin or due to
switching
443.1 General
Clause 443 specifies requirements for protection of electrical installations against transient
overvoltages of atmospheric origin transmitted by the supply distribution system including
direct strikes to the supply system and against switching overvoltages. Clause 443 does not
specify requirements for protection against transient overvoltage due to direct or nearby
lightning strokes on the structure.
NOTE 1 For risk management for protection against transient overvoltage due to direct or nearby lightning strokes
on the structure, see IEC 62305-2.
In general, switching overvoltages have lower amplitude than transient overvoltages of
atmospheric origin and therefore the requirements regarding protection against transient
overvoltages of atmospheric origin normally cover protection against switching overvoltages.
If no transient overvoltage protection against disturbances of atmospheric origin is installed,
protection against switching overvoltages may need to be provided.
NOTE 2 Overvoltages due to switching can be longer in duration and can contain more energy than the transient
overvoltages of atmospheric origin. See 443.4.
The characteristics of transient overvoltages of atmospheric origin depend on factors such as:
– the nature of the supply distribution system (underground or overhead);
– the possible existence of at least one surge protective device (SPD) upstream of the origin
of the installation;
– the voltage level of the supply system.
NOTE 3 As regards transient overvoltages of atmospheric origin, no distinction is made between earthed and
unearthed systems.
Protection against transient overvoltages is provided by the installation of surge protective
devices (SPDs).
Selection and installation of SPDs shall be in compliance with Clause 534 of
IEC 60364-5-53:2001, IEC 60364-5-53:2001/AMD1:2002 and IEC 60364-5-53/AMD2:2015.
If there is a need for SPDs on the power supply lines, additional SPDs on other Iines such as
telecom lines are also recommended.
Requirements for protection against transient overvoltages transmitted by data transmission
systems are not covered by Clause 443. See IEC 61643-22.

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SIST HD 60364-4-443:2016
– 4 – IEC 60364-4-44:2007/AMD1:2015
© IEC 2015
Clause 443 does not apply to installations where the consequences caused by overvoltages
affect:
a) structures with risk of explosion;
b) structures where the damage may also involve the environment (e.g. chemical or
radioactive emissions).
443.2 Void
443.3 Terms and definitions
443.3.1
urban environment
area with a high density of buildings or densely populated communities with tall buildings
Note 1 to entry: A town centre is an example of an urban environment.
443.3.2
suburban environment
area with a medium density of buildings
Note 1 to entry: Town outskirts are an example of a suburban environment.
443.3.3
rural environment
area with a low density of buildings
Note 1 to entry: The countryside is an example of a rural environment.
443.3.4
surge protective device
SPD
device that contains at least one non-linear component that is intended to limit surge voltages
and divert surge currents
Note 1 to entry: An SPD is a complete assembly, having appropriate connecting means.
Note 2 to entry: This note applies to the French language only.
[SOURCE: IEC
...