EN IEC 60076-22-6:2021

SLOVENSKI STANDARD
01-junij-2021
Nadomešča:
SIST EN 50216-12:2011
Močnostni transformatorji - 22-6. del: Oprema močnostnega transformatorja in
dušilke - Ventilatorji
Power transformers - Part 22-6: Power transformer and reactor cooling equipment - Fans
Ta slovenski standard je istoveten z: EN IEC 60076-22-6:2021
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60076-22-6

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2021
ICS 29.180
English Version
Power transformers - Part 22-6: Power transformer and reactor
fittings - Electric fans for transformers
(IEC 60076-22-6:2021)
Transformateurs de puissance - Partie 22-6: Accessoires Leistungstransformatoren - Teil 22-6: Kühleinrichtungen für
pour transformateurs de puissance et bobines d'inductance Leistungstransformatoren und Drosselspulen - Ventilatoren
- Ventilateurs électriques pour transformateurs (IEC 60076-22-6:2021)
(IEC 60076-22-6:2021)
This European Standard was approved by CENELEC on 2021-02-22. 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60076-22-6:2021 E

European foreword
The text of document 14/1022/CDV, future edition 1 of IEC 60076-22-6, prepared by IEC/TC 14
"Power transformers" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC
as EN IEC 60076-22-6:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-11-22
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-02-22
document have to be withdrawn
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 60076-22-6:2021 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60076-6 NOTE Harmonized as EN 60076-6
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 60034-1 - Rotating electrical machines - Part 1: Rating - -
and performance
IEC 60076-1 2011 Power transformers - Part 1: General EN 60076-1 2011
IEC 60076-10 - Power transformers - Part 10: Determination EN 60076-10 -
of sound levels
IEC 60529 - Degrees of protection provided by enclosures - -
(IP Code)
ISO 281 - Rolling bearings - Dynamic load ratings and - -
rating life
ISO 5801 2017 Fans - Performance testing using EN ISO 5801 2017
standardized airways
ISO 9227 - Corrosion tests in artificial atmospheres - Salt EN ISO 9227 -
spray tests
ISO 12944 series Paints and varnishes - Corrosion protection of - -
steel structures by protective paint systems
ISO 13347-1 - Industrial fans - Determination of fan sound - -
power levels under standardized laboratory
conditions - Part 1: General overview
ISO 13347-3 - Industrial fans - Determination of fan sound - -
power levels under standardized laboratory
conditions - Part 3: Enveloping surface
methods
Publication Year Title EN/HD Year
ISO 13348 - Industrial fans - Tolerances, methods of - -
conversion and technical data presentation
ISO 13857 2019 Safety of machinery - Safety distances to EN ISO 13857 2019
prevent hazard zones being reached by
upper and lower limbs
ISO 14694 - Industrial fans - Specifications for balance - -
quality and vibration levels
IEC 60076-22-6 ®
Edition 1.0 2021-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Power transformers –
Part 22-6: Power transformer and reactor fittings – Electric fans for transformers

Transformateurs de puissance –

Partie 22-6: Accessoires pour transformateurs de puissance et bobines

d'inductance – Ventilateurs électriques pour transformateurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.180 ISBN 978-2-8322-9252-5

– 2 – IEC 60076-22-6:2021 © IEC:2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Service conditions . 6
4.1 General . 6
4.2 Degree of protection of electrical components (IP) . 6
4.3 Corrosion protection . 6
5 General characteristics and requirements . 7
5.1 Main components and characteristics . 7
5.1.1 Nameplate and rating plates . 7
5.1.2 Motor drive . 7
5.1.3 Connection box . 8
5.1.4 Housing . 8
5.1.5 Fan wheel . 8
5.1.6 Protective grating . 8
5.1.7 Materials . 9
5.1.8 Vibration limits . 9
5.2 Supply conditions . 9
5.2.1 Transport and storage . 9
5.2.2 Installation and operation, operational performance . 9
5.2.3 Technical documentation . 9
5.3 Performance requirements . 10
5.3.1 General . 10
5.3.2 Rated values . 10
5.3.3 Ambient conditions for rated power and noise . 10
5.4 Tests . 10
5.4.1 General . 10
5.4.2 List of tests . 11
5.4.3 Routine tests . 11
5.4.4 Type tests . 11
Annex A (normative) Ordering designations . 12
A.1 Minimal ordering designations . 12
A.2 Additional specifications (if necessary) . 12
Annex B (informative) Performance of the fans – Typical fan characteristic speed
controlled curves . 13
Annex C (informative) Design examples . 14
Bibliography . 16

Figure B.1 – Performance of the fans . 13
Figure C.1 – Fan design example . 14
Figure C.2 – Fan design example with guide vane . 15

Table C.1 – Common selection of materials used in the construction . 15

IEC 60076-22-6:2021 © IEC:2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER TRANSFORMERS –
Part 22-6: Power transformer and reactor fittings –
Electric fans for transformers

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