IEC 61332:2016

Soft ferrite material classification

IEC 61332:2016 specifies classification rules for soft ferrite materials used in inductive components (inductors and transformers) fulfilling the requirements of the electronic industries. This document addresses the following issues for ferrite suppliers and users:
- cross-reference between materials from multiple suppliers;
- assistance to customers in understanding the published technical data in catalogues when comparing multiple suppliers;
- guidance to customers in selecting the most applicable material for each application;
- setting of nomenclature for IEC standards relating to ferrite;
- establishing uniform benchmarks for suppliers for performance in new development of materials.
This edition includes the following significant technical changes with respect to the previous edition:
a) deleted "c" rank from subclass from Table 3, because of too large power loss density;
b) added "a-wide" rank in subclasses PW3, PW4 and PW5 in Table 3;
c) changed "B" of PW3 class from 100 mT to 200 mT; "B x f" and "power loss density" have also been changed;
d) changed "B" of PW4 class from 50 mT to 100 mT; "B x f" and "power loss density" have also been changed.

Classification des matériaux ferrites doux

L'IEC 61332:2016 spécifie les règles de classification pour les matériaux ferrites doux utilisés dans les composants inductifs (inductances et transformateurs) qui satisfont aux exigences des domaines de l’électronique. Le présent document traite des points suivants pour les fournisseurs et les utilisateurs de ferrite:
- références croisées entre matériaux issus de plusieurs fournisseurs;
- aide apportée aux clients pour comprendre les données techniques publiées dans les catalogues lors de la comparaison de plusieurs fournisseurs;
- recommandations aux clients pour le choix du matériau le plus approprié pour chaque application;
- établissement d'une nomenclature pour les normes IEC en rapport avec la ferrite;
- établissement de références uniformes pour les fournisseurs sur la performance du nouveau développement de matériaux.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) rang "c" supprimé de la sous-classe du Tableau 3 à cause d'une densité de perte de puissance trop importante;
b) rang "a-large" ajouté dans les sous-classes PW3, PW4 et PW5 dans le Tableau 3;
c) "B" de la classe PW3 modifié de 100 mT à 200 mT; "B ´ f" et "densité de perte de puissance" ont également été modifiés;
d) "B" de la classe PW4 modifié de 50 mT à 100 mT; "B ´ f" et "densité de perte de puissance" ont également été modifiés.

Vodne turbine, akumulacijske črpalke in črpalne turbine – Razpisna dokumentacija – 4. del: Smernice za tehnične specifikacije Kaplanovih in propelerskih turbin

General Information

• Status: Published
• Publication Date: 17-Nov-2016
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.140 - Hydraulic energy engineering
• ICS: 29.100.10 - Magnetic components
• Technical Committee: TC 51 - Magnetic components, ferrite and magnetic powder materials
• Drafting Committee: MT 1 - TC 51/MT 1
• Current Stage: PPUB - Publication issued
• Start Date: 15-Jan-2017
• Completion Date: 18-Nov-2016
• Ref Project: SIST IEC/TR 61366-4:1999 - Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 4: Guidelines for technical specifications for Kaplan and propeller turbines

Relations

• Revises: IEC 61332:2005 - Soft ferrite material classification
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61332 ®
Edition 3.0 2016-11
INTERNATIONAL
STANDARD
Soft ferrite material classification
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 61332 ®
Edition 3.0 2016-11
INTERNATIONAL
STANDARD
Soft ferrite material classification

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.100.10 ISBN 978-2-8322-3748-9

– 2 – IEC 61332:2016  IEC 2016
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions. 5
4 Classification . 5
4.1 Material classification . 5
4.2 Main classes . 6
4.3 Subclasses . 6
5 Soft ferrite material classes . 6
5.1 Materials used as impedances in interference suppression applications (IS
class) . 6
5.2 Materials used mainly in low flux density applications (B ≤ 5 mT) (SP class) . 7
5.3 Materials used mainly in high flux density applications (PW class) . 8
Bibliography . 10

Table 1 – IS class ferrite materials . 7
Table 2 – SP class ferrite materials . 8
Table 3 – PW class ferrite materials . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SOFT FERRITE MATERIAL 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 61332 has been prepared IEC technical committee 51: Magnetic
components, ferrite and magnetic powder materials.
This third edition cancels and replaces the second edition published in 2005. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) deleted "c" rank from subclass from Table 3, because of too large power loss density;
b) added "a-wide" rank in subclasses PW3, PW4 and PW5 in Table 3;
c) changed "B" of PW3 class from 100 mT to 200 mT; "B × f" and "power loss density" have also
been changed;
d) changed "B" of PW4 class from 50 mT to 100 mT; "B × f" and "power loss density" have also
been changed.
– 4 – IEC 61332:2016  IEC 2016
The text of this standard is based on the following documents:
FDIS Report on voting
51/1146/FDIS 51/1155/RVD
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 wi
...

IEC 61332 ®
Edition 3.0 2016-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Soft ferrite material classification

Classification des matériaux ferrites doux

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - IEC online collection - oc.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications IEC gratuitement tous les aperçus des publications. Avec un
en utilisant différents critères (numéro de référence, texte, abonnement, vous aurez toujours accès à un contenu à jour
comité d’études, …). Elle donne aussi des informations sur adapté à vos besoins.
les projets et les publications remplacées ou retirées.

Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
Le premier dictionnaire d'électrotechnologie en ligne au
Restez informé sur les nouvelles publications IEC. Just
monde, avec plus de 22 000 articles terminologiques en
Published détaille les nouvelles publications parues.
anglais et en français, ainsi que les termes équivalents dans
Disponible en ligne et une fois par mois par email.
16 langues additionnelles. Egalement appelé Vocabulaire

Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
[e-mail].
IEC 61332 ®
Edition 3.0 2016-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Soft ferrite material classification

Classification des matériaux ferrites doux

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.100.10 ISBN 978-2-8322-9258-7

– 2 – IEC 61332:2016  IEC 2016
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Classification . 6
4.1 Material classification . 6
4.2 Main classes . 6
4.3 Subclasses . 6
5 Soft ferrite material classes . 6
5.1 Materials used as impedances in interference suppression applications (IS
class) . 6
5.2 Materials used mainly in low flux density applications (B ≤ 5 mT) (SP class) . 7
5.3 Materials used mainly in high flux density applications (PW class) . 8
Bibliography . 10

Table 1 – IS class ferrite materials . 7
Table 2 – SP class ferrite materials . 8
Table 3 – PW class ferrite materials . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SOFT FERRITE MATERIAL 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 61332 has been prepared IEC technical committee 51: Magnetic
components, ferrite and magnetic powder materials.
This third edition cancels and replaces the second edition published in 2005. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) deleted "c" rank from subclass from Table 3, because of too large power loss density;
b) added "a-wide" rank in subclasses PW3, PW4 and PW5 in Table 3;
c) changed "B" of PW3 class from 100 mT to 200 mT; "B × f" and "power loss density" have also
been changed;
d) changed "B" of PW4 class from 50 mT to 100 mT; "B × f" and "power loss density" have also
been changed.
– 4 – IEC 61332:2016  IEC 2016
The text of this standard is based on the following documents:
FDIS Report on voting
51/1146/FDIS 51/1155/RVD
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.
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.
SOFT FERRITE MATERIAL CLASSIFICATION

1 Scope
This document specifies classification rules for soft ferrite materials used in inductive
components (inductors and transformers) fulfilling the requirements of the electronic industries.
This document addresses the following issues for ferrite suppliers and users:
• cross-reference between materials from multiple suppliers;
• assistance to customers in understanding the published technical data in catalogues when
comparing multiple suppliers;
• guidance to customers in selecting the most applicable material for each application;
• setting of nomenclature for IEC standards relating to ferrite;
• establishing uniform benchmarks for suppliers for performance in new development of
materials.
The numerical values given in this document are typical values of the parameters (properties) of
the related materials. Direct translation from the material specification into the core specification
is not always easy or possible.
Every detailed material and core specification should be agreed upon between the user and the
manufacturer.
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 60050-221, International Electrotechnical Vocabulary – Chapter 221: Magnetic materials
and components
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-221 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

– 6 – IEC 61332:2016  IEC 2016
4 Classification
4.1 Material classification
Soft
...

SLOVENSKI STANDARD
01-april-1999
9RGQHWXUELQHDNXPXODFLMVNHþUSDONHLQþUSDOQHWXUELQH±5D]SLVQDGRNXPHQWDFLMD
±GHO6PHUQLFH]DWHKQLþQHVSHFLILNDFLMH.DSODQRYLKLQSURSHOHUVNLKWXUELQ
Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 4:
Guidelines for technical specifications for Kaplan and propeller turbines
Ta slovenski standard je istoveten z: IEC/TR 61366-4
ICS:
27.140 Vodna energija Hydraulic energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL
IEC
REPORT – TYPE 3
61366-4
First edition
1998-03
Hydraulic turbines, storage pumps
and pump-turbines –
Tendering Documents –
Part 4:
Guidelines for technical specifications
for Kaplan and propeller turbines
Turbines hydrauliques, pompes d’accumulation
et pompes-turbines –
Documents d’appel d’offres –
Partie 4:
Guide des spécifications techniques pour les turbines Kaplan
et les turbines à hélice
 IEC 1998  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
V
International Electrotechnical Commission
For price, see current catalogue

– 2 – 61366-4 © IEC:1998(E)
CONTENTS
Page
FOREWORD . 4
Clause
0 Introduction to technical specifications . 7
1 Scope. 9
2 Reference documents . 9
3 Technical requirements. 9
3.1 Scope of work. 9
3.2 Limits of the contract . 10
3.3 Supply by Employer . 10
3.4 Design conditions . 11
3.5 Technical performance and other guarantees. 14
3.6 Mechanical design criteria . 17
3.7 Design documentation . 17
3.8 Materials and construction . 18
3.9 Shop inspection and testing . 19
4 Technical specifications for fixed/embedded components. 20
4.1 Spiral case . 21
4.2 Stay ring. 22
4.3 Foundation ring . 22
4.4 Discharge ring . 23
4.5 Draft tube and draft tube liner . 23
4.6 Pit liner. 24
5 Technical specifications for stationary/removable components . 24
5.1 Headcover and bottom ring . 24
5.2 Guide vanes . 25
6 Technical specifications for guide vane regulating apparatus. 25
6.1 Servomotors . 25
6.2 Connecting rods . 25
6.3 Regulating ring . 26
6.4 Guide vane linkage . 26
6.5 Guide vane overload protection. 26
6.6 Locking devices. 26
7 Technical specifications for rotating parts, guide bearings and seals . 26
7.1 Runner . 26
7.2 Runner blade regulating apparatus . 27
7.3 Main shaft . 27
7.4 Turbine guide bearing. 28

61366-4 © IEC:1998(E) – 3 –
Clause Page
7.5 Main shaft seal . 28
7.6 Standstill (maintenance) seal . 28
8 Technical specifications for thrust bearing (when specified as part of
turbine supply). 29
8.1 Design data . 29
8.2 Bearing support . 29
8.3 Bearing assembly . 29
8.4 Oil injection pressure lift system. 29
9 Technical specifications for miscellaneous components . 29
9.1 Walkways, access platforms and stairs . 29
9.2 Lifting fixtures. 30
9.3 Special tools. 30
9.4 Standard tools . 30
9.5 Turbine pit hoist. 30
9.6 Nameplate. 30
10 Technical specifications for auxiliary systems. 30
10.1 Turbine pit drainage. 30
10.2 Lubrication of guide vane regulating system . 31
10.3 Air admission system. 31
10.4 Tailwater depression system. 31
11 Technical specifications for instrumentation . 31
11.1 Controls. 31
11.2 Indication. 31
11.3 Protection. 31
12 Spare parts. 32
13 Model acceptance tests . 32
14 Site installation and commissioning tests . 33
14.1 General . 33
14.2 Installation procedures. 33
14.3 Tests during installation . 33
14.4 Commissioning tests. 33
15 Field acceptance tests . 34
15.1 Scope and reports . 34
15.2 Inspection of cavitation pitting. 34

– 4 – 61366-4 © IEC:1998(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HYDRAULIC TURBINES, STORAGE PUMPS AND PUMP-TURBINES –
TENDERING DOCUMENTS –
Part 4: Guidelines for technical specifications
for Kaplan and propeller turbines
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
report of one of the following types:
• type 1, when the required support cannot be obtained for the publication of an International
Standard, despite repeated efforts;
• type 2, when the subject is still under technical development or where for any other reason
there is the future but no immediate possibility of an agreement on an International
Standard;
• type 3, when a technical committee has collected data of a different kind from that which is
normally published as an International Standard, for example "state of the art".
Technical reports of types 1 and 2 are subject to review within three years of publication to
decide whether they can be transformed into International Standards. Technical reports of
type 3 do not necessarily have to be reviewed until the data they provide are considered to be
no longer valid or useful.
IEC 61366-4, which is a technical report of type 3, has been prepared by IEC technical
committee 4: Hydraulic turbines.

61366-4 © IEC:1998(E) – 5 –
The text of this technical report is based on the following documents:
Committee draft Report on voting
4/110/CDV 4/122/RVC
Full information on the voting for the approval of this technical report can be found in the report
on voting indicated in the above table.
Technical Report IEC 61366-4 is one of a series which deals with Tendering Documents for
hydraulic turbines, storage pumps and pump-turbines. The series consists of seven parts:
Part 1: General and annexes (IEC 61366-1)
Part 2: Guidelines for technical specification for Francis turbines (IEC 61366-2)
Part 3: Guidelines for technical specification for Pelton turbines (IEC 61366-3)
Part 4: Guidelines for technical specification for Kaplan and propeller turbines (IEC 61366-4)
Part 5: Guidelines for technical specification for tubular turbines (IEC 61366-5)
Part 6: Guidelines for technical specification for pump-turbines (IEC 61366-6)
Part 7: Guidelines for technical specification for storage pumps (IEC 61366-7)
Parts 2 to 7 are "stand-alone" publications which when used with Part 1 contain guidelines for a
specific machine type (i.e. Parts 1 and 4 represent the combined gui
...