EN IEC 60034-3:2020

Rotating electrical machines - Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines and for synchronous compensators

IEC 60034-3:2020 applies to large three-phase synchronous generators, having rated outputs of 10 MVA and above driven by steam turbines or combustion gas turbines. Also included are synchronous Mvar compensators of the same output range connected to a grid for the purpose of exchanging reactive power. This document supplements basic requirements for rotating machines given in IEC 60034-1. This seventh edition cancels and replaces the sixth edition published in 2007. This edition includes the following significant technical changes with respect to the previous edition: - title modified; - scope extended to synchronous compensators; - rotor overcurrent requirements added; - impact of stator harmonics on rotor unbalanced load capability introduced; - synchronisation requirements added; - adjustments of temperatures or temperature rise revised for gas turbine applications; - requirements for auxiliaries updated.

Drehende elektrische Maschinen - Teil 3: Besondere Anforderungen an Synchrongeneratoren, angetrieben durch Dampfturbinen oder Gasturbinen, und an synchrone Phasenschieber

Machines électriques tournantes - Partie 3: Exigences spécifiques pour les alternateurs synchrones entraînés par des turbines à vapeur ou par des turbines à gaz et pour les compensateurs synchrones

l'IEC 60034-3:2020 s'applique aux alternateurs triphasés synchrones de grande taille, de puissance assignée supérieure ou égale à 10 MVA, entraînés par des turbines à vapeur ou par des turbines à gaz. Elle inclut également les compensateurs Mvar synchrones de même puissance connectés à un réseau, destinés à échanger de la puissance réactive. Le présent document constitue un complément aux exigences de base pour les machines tournantes données dans l'IEC 60034-1. Cette septième édition annule et remplace la sixième édition parue en 2007. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - modification du titre; - extension du domaine d'application aux compensateurs synchrones; - ajout d'exigences concernant la surintensité du rotor; - introduction de l'impact des harmoniques statoriques sur la performance de la charge déséquilibrée du rotor; - ajout d'exigences concernant la synchronisation; - révision des ajustements des températures ou des échauffements pour les installations de type turbines à gaz; - mise à jour des exigences concernant les auxiliaires.

Električni rotacijski stroji - 3. del: Posebne zahteve za sinhronske generatorje, ki jih poganjajo parne ali plinske turbine, in za sinhronske kompenzatorje (IEC 60034-3:2020)

General Information

• Status: Published
• Publication Date: 23-Jul-2020
• ICS: 29.160 - Rotating machinery
• ICS: 29.160.01 - Rotating machinery in general
• Technical Committee: CLC/TC 2 - Rotating machinery
• Drafting Committee: IEC/TC 2 - IEC_TC_2
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 24-Jul-2020
• Completion Date: 24-Jul-2020
• Ref Project: SIST EN IEC 60034-3:2020 - Rotating electrical machines - Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines and for synchronous compensators (IEC 60034-3:2020)

Relations

• Replaces: EN 60034-3:2008 - Rotating electrical machines - Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2020
Nadomešča:
SIST EN 60034-3:2008
Električni rotacijski stroji - 3. del: Posebne zahteve za sinhronske generatorje, ki
jih poganjajo parne ali plinske turbine, in za sinhronske kompenzatorje (IEC 60034-
3:2020)
Rotating electrical machines - Part 3: Specific requirements for synchronous generators
driven by steam turbines or combustion gas turbines and for synchronous compensators
(IEC 60034-3:2020)
Drehende elektrische Maschinen - Teil 3: Besondere Anforderungen an
Synchrongeneratoren, angetrieben durch Dampfturbinen oder Gasturbinen, und an
synchrone Phasenschieber (IEC 60034-3:2020)
Machines électriques tournantes - Partie 3: Exigences spécifiques pour les alternateurs
synchrones entraînés par des turbines à vapeur ou par des turbines à gaz et pour les
compensateurs synchrones (IEC 60034-3:2020)
Ta slovenski standard je istoveten z: EN IEC 60034-3:2020
ICS:
27.040 Plinske in parne turbine. Gas and steam turbines.
Parni stroji Steam engines
29.160.20 Generatorji Generators
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60034-3

NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2020
ICS 29.160.01 Supersedes EN 60034-3:2008 and all of its amendments
and corrigenda (if any)
English Version
Rotating electrical machines - Part 3: Specific requirements for
synchronous generators driven by steam turbines or combustion
gas turbines and for synchronous compensators
(IEC 60034-3:2020)
Machines électriques tournantes - Partie 3: Exigences Drehende elektrische Maschinen - Teil 3: Besondere
spécifiques pour les alternateurs synchrones entraînés par Anforderungen an Synchrongeneratoren, angetrieben durch
des turbines à vapeur ou par des turbines à gaz et pour les Dampfturbinen oder Gasturbinen, und an synchrone
compensateurs synchrones Phasenschieber
(IEC 60034-3:2020) (IEC 60034-3:2020)
This European Standard was approved by CENELEC on 2020-06-30. 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 60034-3:2020 E

European foreword
The text of document 2/1987/FDIS, future edition 7 of IEC 60034-3, prepared by IEC/TC 2 "Rotating
machinery" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-03-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-06-30
document have to be withdrawn
This document supersedes EN 60034-3:2008 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 60034-3:2020 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 60079-0 NOTE Harmonized as EN IEC 60079-0

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 60034-4-1 - Rotating electrical machines - Part 4-1: EN IEC 60034-4-1 -
Methods for determining electrically excited
synchronous machine quantities from tests
IEC 60045-1 - Steam turbines - Part 1: Specifications EN IEC 60045-1 -
IEC 60079 series Explosive atmospheres EN IEC 60079 series
IEC 60085 - Electrical insulation - Thermal evaluation and EN 60085 -
designation
IEC 60034-3 ®
Edition 7.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –

Part 3: Specific requirements for synchronous generators driven by steam

turbines or combustion gas turbines and for synchronous compensators

Machines électriques tournantes –

Partie 3: Exigences spécifiques pour les alternateurs synchrones entraînés

par des turbines à vapeur ou par des turbines à gaz et pour les compensateurs

synchrones
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.160.01 ISBN 978-2-8322-8084-3

– 2 – IEC 60034-3:2020 © IEC 2020
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General . 8
4.1 General rules . 8
4.2 Rated conditions . 9
4.2.1 Generators . 9
4.2.2 Compensators . 9
4.3 Rated voltage . 9
4.4 Power factor . 9
4.5 Rated speed . 10
4.6 Ranges of voltage and frequency . 10
4.7 Direction of rotation . 11
4.8 Stator winding, output voltage . 11
4.9 Winding insulation . 11
4.9.1 Insulation systems, thermal class . 11
4.9.2 Withstand voltage tests. 11
4.10 Insulation against shaft current . 12
4.11 Overspeed test . 12
4.12 Critical speeds . 12
4.13 P-Q capability diagram . 12
4.14 Overcurrent requirements . 14
4.14.1 General . 14
4.14.2 Stator current . 14
4.14.3 Rotor field current . 14
4.15 Unbalanced currents and current harmonics capability . 15
4.15.1 Negative sequence current . 15
4.15.2 Current harmonics . 15
4.16 Sudden short circuit . 16
4.17 Synchronisation . 16
4.18 Short circuit ratio (SCR) . 17
4.19 Direct axis transient and subtransient reactances . 17
4.20 Tolerances on short circuit ratio and direct axis transient and subtransient
reactances . 17
4.21 Mechanical conditions for rotors . 17
4.21.1 Number of starts . 17
4.21.2 Turning gear operation . 18
4.22 Coolers . 18
5 Air-cooled generators or compensators . 18
5.1 General . 18
5.2 Cooling system . 18
5.3 Temperature of primary coolant . 19
5.3.1 General . 19
5.3.2 Temperature detectors . 19
6 Hydrogen-cooled or liquid-cooled generators or compensators . 19

IEC 60034-3:2020 © IEC 2020 – 3 –
6.1 General . 19
6.2 Hydrogen pressure and purity in the casing . 19
6.3 Machine housing and cover plates . 20
6.4 Stator winding terminals . 20
6.5 Temperature of primary coolants, temperatures and temperature rises . 20
6.6 Temperature detectors . 20
6.7 Auxiliary systems . 21
7 Generators for combustion gas turbines or combined cycle applications . 21
7.1 General . 21
7.2 Service conditions . 21
7.2.1 General . 21
7.2.2 Primary coolant temperature . 22
7.2.3 Number of starts . 22
7.2.4 Application of load .
...