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 deals with general requirements for isolation, switching and control and with the requirements for selection and erection of the devices provided to fulfil such functions. Clause 534 contains provisions for the application of voltage limitation in order to obtain insulation coordination in the cases described in HD 60364-4-44, EN 60664-1, EN 62305-1, EN 62305-4 and CLC/TS 61643-12. Clause 534 focuses mainly on the requirements for the selection and erection of SPDs for protection against transient overvoltages where required by IEC 60364-4-44:2007, Clause 443, the EN 62305 series, or as otherwise specified. Clause 534 does not take into account: - surge protective components which may be incorporated in the appliances connected to the installation; - portable SPDs NOTE Further information can be found in CLC/TS 61643-12. Clause 534 applies to a.c. power circuits. As far as it is applicable, the requirements of this clause may be followed for d.c. power circuits.

Errichten von Niederspannungsanlagen - Teil 5-53: Auswahl und Errichtung elektrischer Betriebsmittel - Trennen, Schalten und Steuern - Abschnitt 534: Überspannungs-Schutzeinrichtungen (SPDs)

Installations électriques à basse tension - Partie 5-53: Choix et mise en oeuvre des matériels électriques - Sectionnement, coupure et commande - Article 534: Dispositifs de protection contre les surtensions transitoires

L’IEC 60364-5-53 traite des prescriptions générales relatives au sectionnement, à la coupure et à la commande, ainsi que des prescriptions relatives au choix et à la mise en œuvre des dispositifs assurant ces fonctions. L'Article 534 contient des dispositions pour l’application de la limitation de tension afin de réaliser la coordination de l’isolement dans les cas décrits dans le HD 60364-4-44, l'EN 60664-1, l'EN 62305-1, l'EN 62305-4 et la CLC/TS 61643-12. L'Article 534 porte principalement sur les exigences relatives au choix et à l'installation des parafoudres pour la protection contre les surtensions transitoires conformément aux exigences de l'IEC 60364-4-44:2007, Article 443, de la série EN 62305 ou suivant une spécification contraire. L'Article 534 ne prend pas en compte: - les composants de protection contre les surtensions pouvant être incorporés dans les matériels d'utilisation connectés à l'installation; - les parafoudres mobiles. NOTE De plus amples informations sont disponibles dans la CLC/TS 61643-12. L'Article 534 s'applique à des circuits de puissance en courant alternatif. Pour les circuits de puissance en courant continu, les exigences du présent article peuvent s'appliquer autant que possible.

Nizkonapetostne električne inštalacije - 5-53. del: Izbira in namestitev električne opreme - Ločevanje, stikanje in krmiljenje - 534. točka: Naprave za prenapetostno zaščito

Podaja zahteve za postavitev in izbiro naprav za prenapetostno zaščito v inštalacijah stavb za doseganje omejitve začasne prenapetosti atmosferskega izvora, ki jih prenaša distribucijski sistem, in zaščito pred stikalno prenapetostjo, ki jo povzroči oprema v inštalaciji. Izbira in postavitev naprav za prenapetostno zaščito je potrebna tudi za zaščito pred neposrednimi udari strele ali udari strele v bližini stavb.

General Information

Status
Published
Publication Date
18-Feb-2016
Current Stage
6060 - Document made available
Due Date
19-Feb-2016
Completion Date
19-Feb-2016

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Standards Content (sample)

SLOVENSKI STANDARD
SIST HD 60364-5-534:2016
01-april-2016
1DGRPHãþD
SIST HD 60364-5-534:2008

1L]NRQDSHWRVWQHHOHNWULþQHLQãWDODFLMHGHO,]ELUDLQQDPHVWLWHYHOHNWULþQH

RSUHPH/RþHYDQMHVWLNDQMHLQNUPLOMHQMHWRþND1DSUDYH]DSUHQDSHWRVWQR

]DãþLWR

Low-voltage electrical installations - Part 5-53: Selection and erection of electrical

equipment - Isolation, switching and control - Clause 534: Devices for protection against

overvoltages

Installations électriques à basse tension - Partie 5-53: Choix et mise en oeuvre des

matériels électriques - Sectionnement, coupure et commande - Article 534: Dispositifs

pour la protection contre les surtensions
Ta slovenski standard je istoveten z: HD 60364-5-534:2016
ICS:
29.120.99 'UXJDHOHNWULþQDGRGDWQD Other electrical accessories
RSUHPD
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST HD 60364-5-534:2016 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST HD 60364-5-534:2016
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SIST HD 60364-5-534:2016
HARMONIZATION DOCUMENT HD 60364-5-534
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT
February 2016
ICS 29.130; 91.140.50 Supersedes HD 60364-5-534:2008
English Version
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 , modified)

Installations électriques à basse tension - Partie 5-53: Choix Errichten von Niederspannungsanlagen - Teil 5-53:

et mise en oeuvre des matériels électriques - Auswahl und Errichtung elektrischer Betriebsmittel -

Sectionnement, coupure et commande - Article 534: Trennen, Schalten und Steuern - Abschnitt 534:

Dispositifs de protection contre les surtensions transitoires Überspannung-Schutzeinrichtungen (ÜSE)

(IEC 60364-5-53:2001/A2:2015 , modifiée) (IEC 60364-5-53:2001/A2:2015 , modifiziert)

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 60364-5-534:2016 E
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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
European foreword

The text of document 64/2031/FDIS, future IEC 60364-5-53:2001/A2 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 60364-5-534:2016.

A draft amendment, which covers common modifications to IEC 60364-5-53:2001/A2:2015

(64/2031/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 60364-5-534:2016 supersedes HD 60364-5-534:2008.

HD 60364-5-534:2016 includes the following significant technical changes with respect to the previous

edition: this document constitutes a complete structural and technical revision of HD 60364-5-534:2008.

The most significant technical change refers to the selection requirements for the voltage protection level.

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 60364-5-53:2001/A2:2015 are prefixed “Z”.
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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
Endorsement notice

The text of the International Standard IEC 60364-5-53:2001/A2:2015 was approved by CENELEC as a

Harmonization Document with agreed common modifications.
COMMON MODIFICATIONS
530.2 Normative references
Replace the text of 530.2 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 60364-4-41:2007 + corr. Jul. 2007, Low-voltage electrical installations - Part 4-41: Protection for

safety - Protection against electric shock (IEC 60364-4-41:2005, mod.)

HD 60364-4-43:2010, Low-voltage electrical installations - Part 4-43: Protection for safety - Protection

against overcurrent (IEC 60364-4-43:2008, mod. + corr. Oct. 2008)

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 (IEC 60364-4-44:2007/A1:2015, mod.)

HD 60364-5-54, Low-voltage electrical installations - Part 5-54: Selection and erection of electrical

equipment - Earthing arrangements and protective conductors (IEC 60364-5-54)

EN 60664-1:2007, Insulation coordination for equipment within low-voltage systems - Part 1: Principles,

requirements and tests (IEC 60664-1:2007)

EN 61643-11:2012, Low-voltage surge protective devices - Part 11: Surge protective devices connected

to low-voltage power systems - Requirements and test methods (IEC 61643-11:2011, mod.)

CLC/TS 61643-12, Low-voltage surge protective devices - Part 12: Surge protective devices connected to

low-voltage power distribution systems - Selection and application principles (IEC 61643-12)

EN 62305-1, Protection against lightning - Part 1: General principles (IEC 62305-1)

EN 62305-2, Protection against lightning - Part 2: Risk management (IEC 62305-2)

EN 62305-4, Protection against lightning - Part 4: Electrical and electronic systems within structures

(IEC 62305-4)

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
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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
530.3 Terms and definitions
Add Clause 530.3 “Terms and definitions” as follows:
530.3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
530.3.101
SPD assembly

one SPD or a set of SPDs, in both cases including all SPD disconnectors required by the SPD

manufacturer, providing the required overvoltage protection for a type of system earthing

530.3.102
SPD disconnector
disconnector
device for disconnecting an SPD, or part of an SPD, from the power system

Note 1 to entry: This disconnecting device is not required to have isolating capability for safety purposes. It is to

prevent a persistent fault on the system and is used to give an indication of an SPD’s failure. Disconnectors can be

internal (built in) or external (required by the manufacturer). There may be more than one disconnector function, for

example, an over-current protection function and a thermal protection function. These functions may be in separate

units.
[SOURCE: IEC 61643-11:2011, 3.1.28]
530.3.103
mode of protection of an SPD

intended current path, between terminals that contains protective components, e.g. line-to-line, line-to-

earth, line-to-neutral, neutral-to-earth
[SOURCE: IEC 61643-11:2011, 3.1.8]
530.3.104
follow current interrupt rating

prospective short-circuit current that an SPD is able to interrupt without operation of a disconnector

[SOURCE: IEC 61643-11:2011, 3.1.39]
530.3.105
short-circuit current rating
SCCR

maximum prospective short-circuit current from the power system for which the SPD, in conjunction with

the disconnector specified, is rated
[SOURCE: IEC 61643-11:2011, 3.1.27]
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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
530.3.106
voltage protection level

maximum voltage to be expected at the SPD terminals due to an impulse stress with defined voltage

steepness and an impulse stress with a discharge current with given amplitude and waveshape

Note 1 to entry: The voltage protection level is given by the manufacturer and may not be exceeded by:

– the measured limiting voltage determined for front-of-wave sparkover (if applicable) and the measured limiting

voltage determined from the residual voltage measurements at amplitudes corresponding to I and/or I

n imp
respectively for test classes II and/or I;

– the measured limiting voltage at the open circuit voltage (U ) of the combination wave generator, determined

for the combination wave for test class III.

Note 2 to entry: Information on the correlation between SPD Types and test classes according to the product

standard is provided in Annex C.

[SOURCE: IEC 61643-11:2011, 3.1.14, mod. — Note 1 to entry is modified and Note 2 to entry is added.]

530.3.107
rated impulse voltage

impulse withstand voltage value assigned by the manufacturer to the equipment or to a part of it,

characterizing the specified withstand capability of its insulation against transient overvoltages

[SOURCE: IEC 60664-1:2007, 3.9.2, mod. — The abbreviation 'U ' is added.]
530.3.108
maximum continuous operating voltage

maximum r.m.s. voltage, which may be continuously applied to the SPD's mode of protection

Note 1 to entry: The U value covered by this standard may exceed 1 000 V.
[SOURCE: IEC 61643-11:2011, 3.1.11]
530.3.109
nominal discharge current for class II test
crest value of the current through the SPD having a current waveshape of 8/20

Note 1 to entry: Information on the correlation between SPD Types and test classes according to the product

standard is provided in Annex C.
[SOURCE: IEC 61643-11:2011, 3.1.9, mod. — Note 1 to entry is added.]
530.3.110
impulse discharge current for class I test
imp

crest value of a discharge current through the SPD with specified charge transfer Q and specified energy

W/R in the specified time

Note 1 to entry: Information on the correlation between SPD Types and test classes according to the product

standard is provided in Annex C.
[SOURCE: IEC 61643-11:2011, 3.1.10, mod. — Note 1 to entry is added.]
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HD 60364-5-534:2016
530.3.111
open circuit voltage

open circuit voltage of the combination wave generator at the point of connection of the device under test

[SOURCE: IEC 61643-11:2011, 3.1.23]
530.3.112
two-port SPD

SPD having a specific series impedance connected between separate input and output connections

[SOURCE: IEC 61643-11:2011, 3.1.3]
534 Devices for protection against transient overvoltages
534.1 General
Replace the 2 first paragraphs under 534.1 as follows:

This clause contains provisions for the application of voltage limitation in order to obtain insulation

coordination in the cases described in HD 60364-4-44, EN 60664-1, EN 62305-1, EN 62305-4 and

CLC/TS 61643-12.

This clause focuses mainly on the requirements for the selection and erection of SPDs for protection

against transient overvoltages where required by IEC 60364-4-44:2007, Clause 443, the EN 62305

series, or as otherwise specified.

Replace the title of 534.4.1 and all paragraphs before NOTE 3, except NOTE 1, as follows:

534.4.1 SPD location and type of SPD

SPDs shall at least be installed as close as possible to the origin of the installation. For protection against

effects of lightning and against switching overvoltages Type 2 SPDs shall be used.

If the structure is equipped with an external lightning protection system or protection against effects of

direct lightning is otherwise specified, Type 1 SPDs shall be used.

Where the structure is not equipped with an external lightning protection system and where the

occurrence of direct lightning strike to the overhead lines between the last pole and the entrance of the

installation is to be taken into consideration, Type 1 SPDs at or near the origin of the electrical installation

may be also selected according to Annex B.
Following the product standard, the marking of the product is as follows:
– for Type 1 SPDs: either “Type 1” and/or “T1“ (T1 in a square);
– for Type 2 SPDs: either “Type 2” and/or “T2“ (T2 in a square);
– for Type 3 SPDs: either “Type 3” and/or “T3” (T3 in a square).

NOTE 2 Information on the correlation between SPD Types and test classes according to the product standard is

provided in Annex C.

Additional Type 2 or Type 3 SPDs may be needed to sufficiently protect the installation according to

534.4.4.1 and shall be located downstream in the fixed electrical installation, for example in the sub-

distribution boards or at socket outlets. These SPDs shall not be used without SPDs being installed at the

origin of the installation and shall be coordinated with SPDs located upstream (see 534.4.4.5).

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SIST HD 60364-5-534:2016
HD 60364-5-534:2016

If a Type 1 SPD is not able to provide protection according to 534.4.4.2, it shall be accompanied by a

coordinated Type 2 or Type 3 SPD to ensure the required voltage protection level.

Additional Type 2 SPDs or Type 3 SPDs may be needed close to sensitive equipment to sufficiently

protect the equipment according to 534.4.4.2 and shall be coordinated with SPDs located upstream.

Replace Figure 534.1 and its title as follows:
Type 1 SPD Type 2 SPD Type 2 SPD
and/or or or
Type 2 SPD Type 3 SPD Type 3 SPD
Figure 534.1 — Example of installation of Type 1, Type 2 and Type 3 SPDs

534.4.4.2 Selection of voltage protection level (U ) as a function of equipment rated impulse

voltage (U )
Replace the introductory paragraph for the four indents as follows:

This recommendation may not be considered where one of the following cases applies:

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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
Replace Table 534.1 as follows:
Table 534.1 — Required rated impulse voltage of equipment (U )
Nominal voltage of Nominal voltage of
Voltage line to Required rated impulse voltage (U ) of equipment
the supply the supply
neutral from
a a
Overvoltage category II Overvoltage category I
system system nominal a.c. or d.c.
(equipment with normal (equipment with reduced
voltages up to and
Three-phase Single-phase
rated impulse voltage) rated impulse voltage)
including
systems systems
V V V kV kV
50 0,5 0,33
100 0,8 0,5
120/240 150 1,5 0,8
230/400
300 2,5 1,5
277/480
400/690 600 4 2,5
1 000 1 000 6 4
c c
1 500 d.c.
8 6
According to EN 60038.
The rated impulse voltage applies between live conductor and PE.
Recommended values based on IEC/TR 60664–2-1:2011, Annex D.
Replace the paragraph after Table 534.1 as follows:

Additional SPDs between live conductors may be needed to avoid equipment malfunctions. An

appropriate voltage protection level needs to be evaluated based on equipment immunity and availability

requirements (see CLC/TS 61643-12).

534.4.4.4 Selection of SPDs with regard to nominal discharge current (I ) and impulse discharge

current (I )
imp

Replace the title of Subclause 534.4.4.4.1 and the first paragraph under as follows:

534.4.4.4.1 Type 2 SPDs

Where Type 2 SPDs are required at or near the origin of installation, their nominal discharge current shall

be not less than that given in Table 534.3.
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HD 60364-5-534:2016

Replace the title of Subclause 534.4.4.4.2 and the first 2 paragraphs under as follows:

534.4.4.4.2 Type 1 SPDs

Where Type 1 SPDs are required at or near the origin of the installation, one of the following cases

applies:

a) Where no risk analysis according to EN 62305-2 has been carried out, the impulse discharge current

(I ) shall be not less than as given in Table 534.4.
imp
Replace the indent b) as follows:

b) Where the risk analysis according to EN 62305-2 has been carried out, the impulse discharge current

(I ) shall be determined according to the EN 62305 series.
imp
534.4.4.5 Coordination of two or several SPDs
Replace the paragraph under 534.4.4.5 as follows:

Coordination of SPDs in the installation needs to be ensured. The manufacturer's instructions on how to

achieve coordination between SPDs shall be followed with reference CLC/TS 61643-12.

534.4.4.6 Selection of SPDs with regard to the short-circuit current rating I
SCCR
Replace the second paragraph under 534.4.4.6 as follows:

This requirement does not apply to SPDs connected between neutral conductor and PE in TN or TT

systems, for which this is already covered by the product standard EN 61643-11.

534.4.4.7 Selection of SPDs with regard to the follow current interrupting rating

Replace the second paragraph under 534.4.4.7 as follows:

This requirement does not apply to SPDs connected between neutral conductor and PE conductor in TN

or TT systems, for which this is already covered by the product standard EN 61643-11.

534.4.5.3 Selectivity between overcurrent protective devices
Replace the first paragraph under 534.4.5.3 as follows:

Where required, the need for selectivity between overcurrent protective devices shall be considered

according to the installation conditions at the point of installation of the SPD and the information provided

by the manufacturer (See HD 60364-5-53:2014, Clause 536).
534.4.6 Fault protection
Replace the first paragraph under 534.4.6 as follows:

Fault protection, as defined in HD 60364-4-41, shall remain effective in the protected installation even in

the event of SPD failures.
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HD 60364-5-534:2016
Replace the indent b) as follows:

b) the installation of SPDs upstream of the main RCD. Because of the possibility of a failure of an SPD

connected between neutral conductor and PE, the conditions of HD 60364-4-41:2007, 411.4.1, shall be

met and the SPDs shall be installed in accordance with connection type CT2.
534.4.7 SPDs installation in conjunction with RCDs
Replace NOTE 1 and the last paragraph under 534.4.7 as follows:

NOTE 1 S-type RCDs in accordance with EN 61008–1 and EN 61009–1 satisfy this requirement.

Installation of Type 1 SPDs downstream of an RCD is not recommended.
534.4.10 Connecting conductors of SPDs
Replace the 2 indents after the first paragraph under 534.4.10 as follows:

– 6 mm copper or equivalent for Type 2 SPDs installed at or near the origin of the installation;

– 16 mm copper or equivalent for Type 1 SPDs installed at or near the origin of the installation.

Replace the last 2 indents as follows:

– 2,5 mm copper or equivalent for Type 2 SPDs installed at or near the origin of the installation;

– 6 mm copper or equivalent for Type 1 SPDs installed at or near the origin of the installation.

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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
Annex B
(informative)
Installations supplied by overhead lines
Replace the first 2 paragraphs as follows:

Where overvoltage protection according to HD 60364-4-443:2016, Clause 443, is required, where the

lines entering the building are overhead and where the case of lightning strike to the last pole of the

overhead lines close to the building is taking into account, SPDs at the origin of the installation shall be

selected according to Table B.1.
Further information can be found in EN 62305 series.
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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
Replace Annex C by the following new Annex C:
Annex C
(informative)
Correlation between SPD Types and test classes
according to the product standard EN 61643-11
Table C.1 — Type 1, Type 2 and Type 3 SPDs and
corresponding test classes I, II and III
Reference
Type of SPD Test class
parameter
Type 1 test class I
imp
Type 2 test class II
Type 3 test class III
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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
Add Annex ZA and Annex ZB as follows:
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 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
534.4.1 France
The following content:

Where the structure is not equipped with an external lightning protection system and

where the occurrence of direct lightning strike to the overhead lines between the last

pole and the entrance of the installation is to be taken into consideration, Type 1

SPDs at or near the origin of the electrical installation may be also selected according

to Annex B.
is not applied in France
534.4.1 Germany

In Germany, where the installation of a building is supplied by overhead lines, SPDs

shall be Type 1 according Annex B.
534.4.3 Germany

In Germany, the restriction to a maximum distance of 0,5 m is the only requirement to

be considered.
534.4.4.2 Norway

In Norway, where the installation is galvanic connected to a public IT-distribution

network, the minimum required U for a SPD located at the origin of the installations

shall be at least 350 V.
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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
Clause Special national condition
534.4.4.4.1 Germany
Add the following text and additional table:
The nominal discharge current of Type 2 SPDs installed at or near the origin of

installations with increased safety level, shall not be less than given in Table 534.3

below:
Table 534.3 — Nominal discharge current (I ) in kA depending on supply
system and connection type for installations with increased safety level
Supply system
Single-phase Three-phase
Connection
Connection Connection Connection Connection
type 1 type 2 type 1 type 2
L – N 10 10
L – PE 10 10
N – PE 10 20 10 40
534.4.4.4.2 Germany

In Germany, where the installation of a building is supplied by overhead lines, SPDs

shall be Type 1 according Annex B.
534.4.4.5 Norway

In Norway, where the installation is galvanically connected to a public IT-distribution

network, and where a second SPD is installed downstream of the SPD located in the

main distribution board, the maximum continuous operating voltage, U , for the
second SPD shall be at least 440 V between line conductors and PE, and at least
275 V between line conductors.
534.4.6 Germany

In order to avoid false tripping or welding of the RCDs contacts the flow of high

impulses currents or partial lightning currents should be avoided. Therefore, SPDs

Type 1 or Type 2 at or near the origin of installation should be installed on the line

side of an RCD. If the surge is expected from the load side, e.g. due to external

mounted equipment, not protected by a LPS, SPDs Type 1 or Type 2 should be
installed on the load side of an RCD.
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HD 60364-5-534:2016
Clause Special national condition
534.4.6 Norway
In Norway, where the installation is galvanically connected to a public IT or TT
distribution network without the provision of a distributed PE conductor (i.e.

installation supplied by overhead lines), protection against fire caused by a failure of

the SPD located in the main distribution board shall be ensured by:
– locating the SPD in a separate enclosure of non-combustible materials; or
– protecting the SPD by a time-delayed RCD (S-type or similar) with a rated
residual operating current not exceeding 300 mA; or

– using an SPD constructed so as to minimize the risk of damage and fire due to an

earth failure in the high-voltage distribution network.
534.4.7 Germany

It should be ensured that lightning currents or high impulse currents will not flow

through the RCD. Therefore, the installation of class I tested SPDs downstream the

RCD is not admissible, except partial lightning currents may be expected from the

load side of the RCD.

The installation of class II tested SPDs downstream of the RCD is admissible, only if

already a class II tested SPD is installed upstream of the RCD or if impulse currents

are expected from the load side of the RCD.
In case of surge currents higher than 3 kA 8/20, the RCD may trip causing
interruption of the power supply.
Annex A Germany

In Germany, earthing connections 5a and 5b are required for SPDs installed at the

origin of installation.
Annex B France
Annex B is not applied in France.
Annex B Germany
Annex B is normative in Germany.
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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
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 CEN-CENELEC national member.
This Harmonization Document does not fall under any Directive of the EU.

In the relevant CEN–CENELEC countries, these A-deviations are valid instead of the provisions of the

Harmonization Document until they have been removed.
Clause Deviation
534.4.6 Austria
534.4.7 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):

In Austria, the SPD assembly at or near the origin of the installation may not be

installed downstream of any RCD.
534.4.11AT 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):
Addition:
534.4.11AT Measurement of the insulation resistance

If SPDs mounted in a distribution board may significantly influence the insulation

resistance measurement of the installation, they shall be clearly labelled:
e.g. SPDs shall be disconnected for insulation measurements!
SPDs not incorporated in a distribution board, which are connected to the PE

conductor, shall withstand the insulation resistance measurement without a significant

influence on the measurement results.
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SIST HD 60364-5-534:2016
HD 60364-5-534:2016
Replace the bibliography as follows:
Bibliography

EN 61008-1, Residual current operated circuit-breakers without integral overcurrent protection for

household and similar uses (RCCBs) - Part 1: General rules (IEC 61008-1)

EN 61009-1, Residual current operated circuit-breakers with integral overcurrent protection for household

and similar uses (RCBOs) - Part 1: General rules (IEC 61009-1)
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SIST HD 60364-5-534:2016
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SIST HD 60364-5-534:2016
IEC 60364-5-53
Edition 3.0 2015-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 2
AM ENDEMENT 2
Electrical installations of buildings –
Part 5-53: Selection and erection of electrical equipment – Isolation, switching
and control
Installations électriques des bâtiments –
Partie 5-53: Choix et mise en oeuvre des matériels électriques – Sectionnement,
coupure et commande
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130; 91.140.50 ISBN 978-2-8322-2883-8

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