Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification (IEC 60034-5:2020)

This part of IEC 60034 applies to the classification of degrees of protection provided by
enclosures for rotating electrical machines. It defines the requirements for protective enclosures
that are in all other respects suitable for their intended use and which, from the point of view of
materials and workmanship, ensure that the properties dealt with in this document are
maintained under normal conditions of use.
This document does not specify degrees of protection against mechanical damage of the
machine, or conditions such as moisture (produced for example by condensation), corrosive
dust and vapour, fungus or vermin.
This document is also applicable to explosion proof machines, but it does not specifiy the types
of protection for use in a potentially explosive (dust, gas) environment. Those are defined in the
IEC 60079 series of standards.
In certain applications (such as agricultural or domestic appliances), more extensive
precautions against accidental or deliberate contact may be specified.
This document gives definitions for standard degrees of protection provided by enclosures
applicable to rotating electrical machines as regards the:
a) protection of persons against contacts with or approach to live parts and against contact
with moving parts (other than smooth rotating shafts and the like) inside the enclosure and
protection of the machine against ingress of solid foreign objects;
b) protection of machines against the harmful effects due to ingress of water;
c) protection of machines against the harmful effects due to ingress of dust.
It gives designations for these protective degrees and tests to be performed to check that the
machines meet the requirements of this document.

Drehende elektrische Maschinen - Teil 5: Schutzarten aufgrund der Gesamtkonstruktion von drehenden elektrischen Maschinen (IP-Code) - Einteilung (IEC 60034-5:2020)

Machines électriques tournantes - Partie 5: Degrés de protection procurés par la conception intégrale des machines électriques tournantes (code IP) - Classification (IEC 60034-5:2020)

IEC 60034-5:2020 est disponible sous forme de IEC 60034-5:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

Električni rotacijski stroji - 5. del: Stopnja zaščite, ki jo zagotavlja celovita zasnova električnih rotacijskih strojev (koda IP) - Razvrščanje (IEC 60034-5:2020)

General Information

Status
Published
Public Enquiry End Date
24-Sep-2019
Publication Date
06-Sep-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
03-Jul-2020
Due Date
07-Sep-2020
Completion Date
07-Sep-2020

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SLOVENSKI STANDARD
SIST EN IEC 60034-5:2020
01-oktober-2020
Nadomešča:
SIST EN 60034-5:2002
SIST EN 60034-5:2002/A1:2007

Električni rotacijski stroji - 5. del: Stopnja zaščite, ki jo zagotavlja celovita zasnova

električnih rotacijskih strojev (koda IP) - Razvrščanje (IEC 60034-5:2020)

Rotating electrical machines - Part 5: Degrees of protection provided by the integral

design of rotating electrical machines (IP code) - Classification (IEC 60034-5:2020)

Drehende elektrische Maschinen - Teil 5: Schutzarten aufgrund der Gesamtkonstruktion

von drehenden elektrischen Maschinen (IP-Code) - Einteilung (IEC 60034-5:2020)
Machines électriques tournantes - Partie 5: Degrés de protection procurés par la

conception intégrale des machines électriques tournantes (code IP) - Classification (IEC

60034-5:2020)
Ta slovenski standard je istoveten z: EN IEC 60034-5:2020
ICS:
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
SIST EN IEC 60034-5:2020 en,fr,de

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

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SIST EN IEC 60034-5:2020
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SIST EN IEC 60034-5:2020
EUROPEAN STANDARD EN IEC 60034-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 29.160.01 Supersedes EN 60034-5:2001 and all of its amendments
and corrigenda (if any)
English Version
Rotating electrical machines - Part 5: Degrees of protection
provided by the integral design of rotating electrical machines (IP
code) - Classification
(IEC 60034-5:2020)

Machines électriques tournantes - Partie 5: Degrés de Drehende elektrische Maschinen - Teil 5: Schutzarten

protection procurés par la conception intégrale des aufgrund der Gesamtkonstruktion von drehenden

machines électriques tournantes (code IP) - Classification elektrischen Maschinen (IP-Code) - Einteilung

(IEC 60034-5:2020) (IEC 60034-5:2020)

This European Standard was approved by CENELEC on 2020-06-03. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

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,

Turkey 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

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60034-5:2020 E
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SIST EN IEC 60034-5:2020
EN IEC 60034-5:2020 (E)
European foreword

The text of document 2/1960/CDV, future edition 5 of IEC 60034-5, prepared by IEC/TC 2 "Rotating

machinery" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as

EN IEC 60034-5:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-03-03

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-06-03

document have to be withdrawn

This document supersedes EN 60034-5:2001 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.

Endorsement notice

The text of the International Standard IEC 60034-5:2020 was approved by CENELEC as a European

Standard without any modification.
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SIST EN IEC 60034-5:2020
EN IEC 60034-5:2020 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60034-6 - Rotating electrical machines - Part 6: EN 60034-6 -
Methods of cooling (IC Code)
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SIST EN IEC 60034-5:2020
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SIST EN IEC 60034-5:2020
IEC 60034-5
Edition 5.0 2020-04
INTERNATIONAL
STANDARD
Rotating electrical machines –
Part 5: Degrees of protection provided by the integral design of rotating
electrical machines (IP code) – Classification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.160.01 ISBN 978-2-8322-8025-6

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 7 ----------------------
SIST EN IEC 60034-5:2020
– 2 – IEC 60034-5:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 6

4 Designation ..................................................................................................................... 7

4.1 General ................................................................................................................... 7

4.2 Single characteristic numeral .................................................................................. 7

4.3 Supplementary letters ............................................................................................. 7

4.4 Example of designation ........................................................................................... 7

5 Degrees of protection – First characteristic numeral ........................................................ 7

5.1 Indication of degree of protection ............................................................................ 7

5.2 Compliance to indicated degree of protection .......................................................... 8

5.3 External fans........................................................................................................... 8

5.4 Drain holes ............................................................................................................. 8

6 Degrees of protection – Second characteristic numeral ................................................... 9

6.1 Indication of the degree of protection ...................................................................... 9

6.2 Compliance with lower degrees of protection ........................................................ 10

7 Marking ......................................................................................................................... 10

8 General requirements for tests ...................................................................................... 11

8.1 General ................................................................................................................. 11

8.2 Adequate clearance .............................................................................................. 11

8.2.1 General ......................................................................................................... 11

8.2.2 Low-voltage machines (rated voltages not exceeding 1 000 V a.c. and

1 500 V d.c.) .................................................................................................. 11

8.2.3 High-voltage machines (rated voltages exceeding 1 000 V a.c. and

1 500 V d.c.) .................................................................................................. 11

9 Tests for first characteristic numeral .............................................................................. 11

10 Tests for second characteristic numeral ......................................................................... 15

10.1 Test conditions ..................................................................................................... 15

10.2 Acceptance conditions .......................................................................................... 23

10.2.1 General ......................................................................................................... 23

10.2.2 Ingress of water ............................................................................................. 24

10.2.3 Withstand voltage test ................................................................................... 24

11 Requirements and tests for open weather-protected machines ...................................... 24

Figure 1 – Standard test finger .............................................................................................. 14

Figure 2 – Equipment to prove protection against dust .......................................................... 15

Figure 3 – Equipment to prove protection against dripping water .......................................... 18

Figure 4 – Equipment to prove protection against spraying and splashing water (shown

with spraying holes in the case of second characteristic numeral 3) ...................................... 19

Figure 5 – Hand-held equipment to prove protection against spraying and splashing

water .................................................................................................................................... 20

Figure 6 – Standard nozzle for hose test ............................................................................... 20

Figure 7 – Geometry of fan jet nozzle ................................................................................... 21

Figure 8 – Measurement of the impact force ......................................................................... 22

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SIST EN IEC 60034-5:2020
IEC 60034-5:2020 © IEC 2020 – 3 –

Figure 9 – Test set-up for determining the protection against high-pressure/steam-jet

cleaning – degree of protection against ingress of water IP X9 for small enclosures ............. 23

Table 1 – Test requirements for guards ................................................................................... 8

Table 2 – Degrees of protection indicated by the first characteristic numeral .......................... 9

Table 3 – Degrees of protection indicated by the second characteristic numeral ................... 10

Table 4 – Test and acceptance conditions for first characteristic numeral ............................. 12

Table 5 – Test conditions for second characteristic numeral ................................................. 16

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SIST EN IEC 60034-5:2020
– 4 – IEC 60034-5:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –
Part 5: Degrees of protection provided by the integral design
of rotating electrical machines (IP code) – Classification
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60034-5 has been prepared by IEC technical committee 2: Rotating

machinery.

This fifth edition cancels and replaces the fourth edition, published in 2000, and its

Amendment 1:2006. This edition constitutes a technical revision.
The main technical changes with respect to the previous edition are:
• the inclusion of an additional second numeral 9 including its test method,
• an additional note for clarification in Table 3,
• a clarification on the term open drain hole,
• a clarification on the ingress of dust in Table 4,
• pressure values given now in Pa only,

• a clarification in the scope on the applicability of this standard for (Ex) motors,

• a new Clause 3 with definitions,
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SIST EN IEC 60034-5:2020
IEC 60034-5:2020 © IEC 2020 – 5 –
The text of this International Standard is based on the following documents:
CDV Report on voting
2/1960/CDV 2/1972A/RVC

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 60034 series, published under the general title Rotating electrical

machines, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document 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.

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SIST EN IEC 60034-5:2020
– 6 – IEC 60034-5:2020 © IEC 2020
ROTATING ELECTRICAL MACHINES –
Part 5: Degrees of protection provided by the integral design
of rotating electrical machines (IP code) – Classification
1 Scope

This part of IEC 60034 applies to the classification of degrees of protection provided by

enclosures for rotating electrical machines. It defines the requirements for protective enclosures

that are in all other respects suitable for their intended use and which, from the point of view of

materials and workmanship, ensure that the properties dealt with in this document are

maintained under normal conditions of use.

This document does not specify degrees of protection against mechanical damage of the

machine, or conditions such as moisture (produced for example by condensation), corrosive

dust and vapour, fungus or vermin.

This document is also applicable to explosion proof machines, but it does not specifiy the types

of protection for use in a potentially explosive (dust, gas) environment. Those are defined in the

IEC 60079 series of standards.

In certain applications (such as agricultural or domestic appliances), more extensive

precautions against accidental or deliberate contact may be specified.

This document gives definitions for standard degrees of protection provided by enclosures

applicable to rotating electrical machines as regards the:

a) protection of persons against contacts with or approach to live parts and against contact

with moving parts (other than smooth rotating shafts and the like) inside the enclosure and

protection of the machine against ingress of solid foreign objects;
b) protection of machines against the harmful effects due to ingress of water;
c) protection of machines against the harmful effects due to ingress of dust.

It gives designations for these protective degrees and tests to be performed to check that the

machines meet the requirements of this document.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies.

For undated references, the latest edition of the referenced document (including any

amendments) applies.
IEC 60034-6, Rotating electrical machines – Part 6: Methods of cooling (IC code)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
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SIST EN IEC 60034-5:2020
IEC 60034-5:2020 © IEC 2020 – 7 –
3.1
closed machine

machine where no medium from the surrounding medium, for the purpose of cooling, passes

through the machine
[SOURCE: IEC 60050-411:1996, 411-44-17]
3.2
open machine

machine with an open cooling circuit in which the coolant is drawn directly from the surrounding

medium passing through the machine and then returning directly to the surrounding medium

[SOURCE: IEC 60050-411:1996, 411-44-16]
4 Designation
4.1 General

The designation used for the degree of protection consists of the letters IP followed by two

characteristic numerals signifying conformity with the conditions indicated in the tables of

Clauses 5 and 6 respectively.
4.2 Single characteristic numeral

When it is required to indicate a degree of protection by only one characteristic numeral, the

omitted numeral shall be replaced by the letter X, for example IPX5 or IP2X.
4.3 Supplementary letters

4.3.1 Additional information may be indicated by a supplementary letter following the second

characteristic numeral. If more than one letter is used, the alphabetic sequence shall apply.

4.3.2 In special applications (such as machines with open circuit cooling for ship deck

installation with air inlet and outlet openings closed during standstill), numerals may be followed

by a letter indicating whether the protection against harmful effects due to ingress of water was

verified or tested for the machine not running (letter S) or the machine running (letter M). In this

case, the degree of protection in either state of the machine shall be indicated, for example

IP55S/IP20M.

The absence of the letters S and M shall imply that the intended degree of protection will be

provided under all normal conditions of use.

4.3.3 For air-cooled open machines suitable for specific weather conditions and provided

with additional protective features or processes (as specified in Clause 11), the letter W may

be used.
4.4 Example of designation
IP 4 4
Characteristic letters
First characteristic numeral (see Table 2)
Second characteristic numeral (see Table 3)
5 Degrees of protection – First characteristic numeral
5.1 Indication of degree of protection

The first characteristic numeral indicates the degree of protection provided by the enclosure to

persons and to the parts of the machine inside the enclosure.

Table 2 gives, in the third column, brief details of objects which will be ‘excluded’ from the

enclosure for each of the degrees of protection represented by the first characteristic numeral.

The term ‘excluded’ implies that a part of the body, a tool or a wire held by a person, either will

not enter the machine or, if it enters, that adequate clearance will be maintained between it and

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SIST EN IEC 60034-5:2020
– 8 – IEC 60034-5:2020 © IEC 2020

the live parts or dangerous moving parts (smooth rotating shafts and the like are not considered

dangerous).

The third column of Table 2 also indicates the minimum size of solid foreign objects which will

be excluded.
5.2 Compliance to indicated degree of protection

Compliance of an enclosure with an indicated degree of protection implies that the enclosure

will also comply with all lower degrees of protection in Table 2. In consequence, the tests

establishing these lower degrees of protection are not required, except in case of doubt.

5.3 External fans

The blades and spokes of fans external to the enclosure shall be protected against contact by

means of guards complying with Table 1.
Table 1 – Test requirements for guards
Protection of machine Test
IP1X 50 mm sphere test
IP2X to IP6X Finger test

For the test, the rotor shall be slowly rotated, for example by hand when possible.

Smooth rotating shafts and similar parts are not considered dangerous.
5.4 Drain holes
If the machine is provided with drain holes, the following shall apply:

• drain holes intended normally to be open on site shall be kept open during testing;

• drain holes are considered as open as long as no breather(s) or plug(s), etc., are mounted

in a drain;

• if machines with protection IP3X or IP4X are intended to be run with open drain holes, the

drain holes may comply with protection IP2X;

• if machines with protection IP5X are intended to be run with open drain holes, the drain

holes shall comply with protection IP4X.
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IEC 60034-5:2020 © IEC 2020 – 9 –
Table 2 – Degrees of protection indicated by the first characteristic numeral
Degree of protection
First
Test
characteristic
Brief description
conditions
Definition
numeral
(NOTE 1)
0 Non-protected machine No special protection No test

1 Machine protected against solid Accidental or inadvertent contact with or Table 4

(NOTE 2) objects greater than 50 mm approach to live and moving parts inside the
enclosure by a large surface of the human body,
such as a hand (but no protection against
deliberate access)
Ingress of solid objects exceeding 50 mm in
diameter

2 Machine protected against solid Contact with or approach to live or moving parts

(NOTE 2) objects greater than 12 mm inside the enclosure by fingers or similar objects

not exceeding 80 mm in length
Ingress of solid objects exceeding 12 mm in
diameter

3 Machine protected against solid Contact with or approach to live or moving parts

(NOTE 2) objects greater than 2,5 mm inside the enclosure by tools or wires exceeding

2,5 mm in diameter
Ingress of solid objects exceeding 2,5 mm in
diameter

4 Machine protected against solid Contact with or approach to live or moving parts

(NOTE 2) objects greater than 1 mm inside the enclosure by wires or strips of
thickness greater than 1 mm
Ingress of solid objects exceeding 1 mm in
diameter
5 Dust-protected machine Contact with or approach to live or moving parts
(NOTE 3) inside the enclosure
Ingress of dust is not totally prevented but dust
does not enter in sufficient quantity to interfere
with satisfactory operation of the machine
6 Dust-tight machines Ingress of dust totally prevented

NOTE 1 The brief description given in the second column of this table cannot be used to specify the type of

protection.

NOTE 2 Machines assigned a first characteristic numeral 1, 2, 3 or 4 will exclude both regularly or irregularly

shaped solid objects, provided that three normally perpendicular dimensions of the object exceed the appropriate

figure in the ‘Definition’ column.

NOTE 3 The degree of protection against dust defined by this document is a general one. When the nature of the

dust (dimensions of particles, their nature, for instance fibrous particles) is specified, test conditions can be

determined by agreement between manufacturer and user.
6 Degrees of protection – Second characteristic numeral
6.1 Indication of the degree of protection

The second characteristic numeral indicates the degree of protection provided by the enclosure

with respect to harmful effects due to ingress of water.

Table 3 gives, in the third column, details of the type of protection provided by the enclosure

for each of the degrees of protection represented by the second characteristic numeral.

An air-cooled open machine is weather-protected when its design reduces the ingress of rain,

snow and airborne particles, under specified conditions, to an amount consistent with correct

operation.

This degree of protection is designated by the letter W placed after the second characteristic

numeral.
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6.2 Compliance with lower degrees of protection

For second characteristic numerals up to and including 6, compliance of an enclosure with an

indicated degree of protection implies that the enclosure will also comply with all lower degrees

of protection in Table 3.

In consequence, the tests establishing these lower degrees of protection are not required,

except in case of doubt.

For IPX7, IPX8 and IPX9, it shall not be assumed that compliance of the enclosure implies that

the enclosure will also comply with all lower degrees of protection in Table 3.
Table 3 – Degrees of protection indicated by the second characteristic numeral
Degree of protection
Second
Test
characteristic
Brief description
conditions
Definition
numeral
(NOTE 1)
0 Non-protected machine No special protection No test

1 Machine protected against Dripping water (vertically falling drops) shall have no Table 5

dripping water harmful effect

2 Machine protected against Vertically dripping water shall have no harmful effect

dripping water when tilted when the machine is tilted at any angle up to 15°
up to 15° from its normal position
3 Machine protected against Water falling as a spray at an angle up to 60° from
spraying water the vertical shall have no harmful effect
...

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