EN IEC 60076-22-5:2021

SLOVENSKI STANDARD
01-junij-2021
Nadomešča:
SIST EN 50216-7:2002
Močnostni transformatorji - 22-5. del: Oprema močnostnega transformatorja in
dušilke - Električne črpalke za transformatorje
Power transformers - Part 22-5: Power transformer and reactor fittings - Electric pumps
for transformers
Leistungstransformatoren - Teil 22-5: Zubehörteile von Leistungstransformatoren und
Drosselspulen - Pumpen
Transformateurs de puissance - Partie 22-5 : Accessoires pour transformateurs de
puissance et bobines d’inductance - Electropompes pour transformateurs
Ta slovenski standard je istoveten z: EN IEC 60076-22-5:2021
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 60076-22-5

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2021
ICS 29.180
English Version
Power transformers - Part 22-5: Power transformer and reactor
fittings - Electric pumps for transformers
(IEC 60076-22-5:2021)
Transformateurs de puissance - Partie 22-5 : Accessoires Leistungstransformatoren - Teil 22-5: Zubehörteile von
pour transformateurs de puissance et bobines d'inductance Leistungstransformatoren und Drosselspulen - Pumpen
- Electropompes pour transformateurs (IEC 60076-22-5:2021)
(IEC 60076-22-5:2021)
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 60076-22-5:2021 E

European foreword
The text of document 14/1021/CDV, future edition 1 of IEC 60076-22-5, prepared by IEC/TC 14
"Power transformers" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC
as EN IEC 60076-22-5:2021.
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 60076-22-5:2021 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 2017 Rotating electrical machines - Part 1: Rating - -
and performance
IEC 60034-5 - Rotating electrical machines - Part 5: EN IEC 60034-5 -
Degrees of protection provided by the
integral design of rotating electrical
machines (IP code) - Classification
IEC 60034-9 - Rotating electrical machines - Part 9: Noise EN IEC 60034-9 -
limits
IEC 60076-1 2011 Power transformers - Part 1: General EN 60076-1 2011
IEC 60076-7 - Power transformers - Part 7: Loading guide - -
for oil-immersed power transformers
IEC 60085 - Electrical insulation - Thermal evaluation and EN 60085 -
designation
IEC 60296 - Fluids for electrotechnical applications - EN IEC 60296 -
Mineral insulating oils for electrical
equipment
IEC 60529 - Degrees of protection provided by - -
enclosures (IP Code)
ISO 179-1 2010 Plastics - Determination of Charpy impact EN ISO 179-1 2010
properties - Part 1: Non-instrumented impact
test
ISO 185 - Grey cast irons - Classification - -

To be published. Stage at the time of publication: prEN IEC 60034-9:2021.
Publication Year Title EN/HD Year
ISO 281 - Rolling bearings - Dynamic load ratings and - -
rating life
ISO 3522 - Aluminium and aluminium alloys - Castings - - -
Chemical composition and mechanical
properties
ISO 4406 - Hydraulic fluid power - Fluids - Method for - -
coding the level of contamination by solid
particles
ISO 7005-2 - Metallic flanges; part 2: cast iron flanges - -
ISO 9906 - Rotodynamic pumps - Hydraulic EN ISO 9906 -
performance acceptance tests - Grades 1, 2
and 3
ISO 12944 series Paints and varnishes - Corrosion protection - -
of steel structures by protective paint
systems
IEC 60076-22-5 ®
Edition 1.0 2021-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Power transformers –
Part 22-5: Power transformer and reactor fittings – Electric pumps for

transformers
Transformateurs de puissance –

Partie 22-5: Accessoires pour transformateurs de puissance et bobines

d'inductance – Électropompes pour transformateurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.180 ISBN 978-2-8322-9249-5

– 2 – IEC 60076-22-5:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Service conditions . 7
4.1 General . 7
4.2 Degree of protection of electrical components (IP) . 8
4.3 External corrosion protection . 8
4.4 Internal corrosion protection . 8
4.5 Insulating liquid characteristics . 8
5 General characteristics and requirements . 8
5.1 Rating plate information . 8
5.2 Direction of liquid flow and rotation . 9
5.3 General mechanical requirements . 9
5.4 Casing or enclosure . 9
5.5 Terminal box . 10
5.6 Materials . 10
5.7 Preferred sizes . 10
5.8 Performance requirements . 10
5.8.1 General . 10
5.8.2 Hydraulic performance . 11
5.8.3 Hydraulic interchangeability . 11
5.8.4 Electrical performance . 12
5.8.5 Noise . 13
5.9 Tests . 13
5.9.1 General . 13
5.9.2 List of tests . 13
5.9.3 Routine tests . 13
5.9.4 Type tests . 14
5.9.5 Special tests . 15
(informative) Preferred sizes of end suction pumps . 16
(informative) Preferred sizes of in-line pumps . 18
(informative) Information required with enquiry, proposal and purchase order . 19
(informative) Example of use of hydraulic interchangeability tolerances . 20
Bibliography . 24

Figure 1 – Hydraulic interchangeability across the allowable operating range . 11
Figure 2 – Hydraulic interchangeability across an actual flow range . 12
Figure A.1 – Dimensions of end suction pumps . 16
Figure B.1 – Dimensions of in-line pumps . 18
Figure D.1 – Pressure-flow characteristics . 20
Figure D.2 – Tolerances as given in 5.8.3 applied to pump A . 21
Figure D.3 – Pressure-flow characteristic of pump B superimposed on the
characteristic of pump A . 22

IEC 60076-22-5:2021 © IEC 2021 – 3 –
Figure D.4 – Pressure-flow characteristic of pumps C and D superimposed on the
characteristic of pump A . 22
Figure D.5 – Flow ranges . 23

Table A.1 – Dimensions of preferred sizes of end suction pumps (mm) . 17
Table B.1 – Dimensions of preferred sizes of in-line pumps (mm) . 18

– 4 – IEC 60076-22-5:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER TRANSFORMERS –
Part 22-5: Power transformer and reactor fittings –
Electric pumps 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
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 Committe
...