Rotating electrical machines -- Part 3: Specific requirements for cylindrical rotor synchronous machines

This part of IEC 60034 applies to three-phase cylindrical rotor synchronous machines, having rated outputs of 10 MVA (or MW) and above. It supplements the basic requirements for rotating machines given in IEC 60034-1. The special requirements of machines continuously fed by inverters are not covered by this standard. Common requirements for all cylindrical rotor machines are prescribed together with specific requirements for air, for hydrogen or for liquid cooled cylindrical rotor synchronous machines. This part of IEC 60034 also gives the precautions to be taken when using hydrogen cooled machines including - rotating exciters driven by cylindrical rotor type machines; - auxiliary equipment needed for operating the machines; - parts of the building where hydrogen might accumulate.

Drehende elektrische Maschinen -- Teil 3: Besondere Anforderungen an Vollpol-Synchronmaschinen

Machines électriques tournantes -- Partie 3: Règles spécifiques pour les machines synchrones à rotor cylindrique

Donne les règles spécifiques communes à toutes les machines synchrones à rotor cylindrique ainsi que des règles spécifiques pour les machines refroidies par air, par hydrogène ou par un liquide. Donne également les précautions à prendre lors de l'usage des machines refroidies par hydrogène.

Rotacijski električni stroji – 3. del: Posebne zahteve za sinhronske stroje s cilindričnim rotorjem (IEC 60034-3:2005)

General Information

Status
Withdrawn
Publication Date
31-Dec-2005
Withdrawal Date
24-Sep-2008
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
23-Sep-2008
Due Date
16-Oct-2008
Completion Date
25-Sep-2008

RELATIONS

Buy Standard

Standard
SIST EN 60034-3:2006
English language
32 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI SIST EN 60034-3:2006
STANDARD
januar 2006
Rotacijski električni stroji – 3. del: Posebne zahteve za sinhronske stroje s
cilindričnim rotorjem (IEC 60034-3:2005)
(istoveten EN 60034-3:2005)

Rotating electrical machines – Part 3: Specific requirements for cylindrical rotor

synchronous machines (IEC 60034-3:2005)
ICS 29.160.20 Referenčna številka
SIST EN 60034-3:2006(en)

© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD EN 60034-3
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2005
ICS 29.160 Supersedes EN 60034-3:1995
English version
Rotating electrical machines
Part 3: Specific requirements for cylindrical
rotor synchronous machines
(IEC 60034-3:2005)
Machines électriques tournantes Drehende elektrische Maschinen
Partie 3: Règles spécifiques Teil 3: Besondere Anforderungen
pour les machines synchrones an Vollpol-Synchronmaschinen
à rotor cylindrique (IEC 60034-3:2005)
(CEI 60034-3:2005)

This European Standard was approved by CENELEC on 2005-05-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,

Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60034-3:2005 E
---------------------- Page: 2 ----------------------
EN 60034-3:2005 - 2 -
Foreword

The text of document 2/1315/FDIS, future edition 5 of IEC 60034-3, prepared by IEC TC 2, Rotating

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

EN 60034-3 on 2005-05-01.
This European Standard supersedes EN 60034-3:1995.

The significant technical changes with respect to EN 60034-3:1995 are as follows:

– the document has been consolidated and completely restructured. It was rewritten to a

considerable extent;

– the section on air cooled generators has been combined with that on hydrogen-cooled and liquid

cooled generators. Different requirements so far valid for air cooled generators alone were

modified in such a way that the requirements are now strictly bound to the generator ratings but

not longer to the machine type. As an example for the harmonisation which took place the short

circuit ratio of the air cooled generators were adjusted to those for the other generators. The

separate cooler sections for air cooled generators were eliminated;

– the standard was generally adjusted to the progress in generator control. The state of the art

control systems do not require the previous large power factors. They were reduced to one

minimum value instead of several value classes providing the prospects of reduced generator

costs. It was considered that standards should not work as an unnecessary cost driving factor;

– a normative Annex A has been added dealing with precautions to be taken when using hydrogen

as a coolant on turbine–type synchronous generators. Formerly only a guide was provided. It was

considered that aspects dealing with the safe operation of hydrogen cooled generators must be

taken seriously and must become normative.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-05-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 60034-3:2005 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 60034-8 NOTE Harmonized as EN 60034-8:2002 (not modified).
__________
---------------------- Page: 3 ----------------------
- 3 - EN 60034-3:2005
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60034-1 - Rotating electrical machines EN 60034-1 2004
Part 1: Rating and performance
1) 2)
IEC 60034-4 - Part 4: Methods for determining EN 60034-4 1995
(mod) synchronous machine quantities from
tests
1) 2)
IEC 60045-1 - Steam turbines EN 60045-1 1993
Part 1: Specifications
IEC 60079 (mod) Series Electrical apparatus for explosive gas EN 60079 Series
atmospheres
Undated reference.
Valid edition at date of issue.
---------------------- Page: 4 ----------------------
NORME CEI
INTERNATIONALE IEC
60034-3
INTERNATIONAL
Cinquième édition
STANDARD
Fifth edition
2005-02
Machines électriques tournantes –
Partie 3:
Règles spécifiques pour les machines
synchrones à rotor cylindrique
Rotating electrical machines –
Part 3:
Specific requirements for cylindrical rotor
synchronous machines
 IEC 2005 Droits de reproduction réservés  Copyright - all rights reserved

Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any

utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including

électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from

microfilms, sans l'accord écrit de l'éditeur. the publisher.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

CODE PRIX
Commission Electrotechnique Internationale PRICE CODE U
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue
---------------------- Page: 5 ----------------------
60034-3  IEC:2005 – 3 –
CONTENTS

FOREWORD.........................................................................................................................7

1 Scope ..........................................................................................................................13

2 Normative references ...................................................................................................13

3 Terms and definitions ...................................................................................................13

4 General ........................................................................................................................15

4.1 General rules.......................................................................................................15

4.2 Rated conditions..................................................................................................15

4.3 Rated voltage ......................................................................................................15

4.4 Power factor ........................................................................................................15

4.5 Rated speed........................................................................................................15

4.6 Ranges of voltage and frequency .........................................................................17

4.7 Direction of rotation .............................................................................................19

4.8 Stator winding .....................................................................................................19

4.9 Machine rated field current and voltage................................................................19

4.10 Machine insulation...............................................................................................19

4.10.1 Thermal class ..........................................................................................19

4.10.2 Withstand voltage tests ............................................................................19

4.11 Insulation against shaft current ............................................................................19

4.12 Over-speed test...................................................................................................21

4.13 Critical-speeds ....................................................................................................21

4.14 P-Q capability diagram ........................................................................................21

4.15 Overcurrent requirements ....................................................................................23

4.16 Sudden short circuit.............................................................................................25

4.17 Short-circuit ratio .................................................................................................25

4.18 Direct axis transient and subtransient reactances for generators...........................25

4.19 Tolerances on short-circuit ratio and direct axis transient and subtransient

reactances ..........................................................................................................27

4.20 Mechanical conditions for rotors...........................................................................27

4.20.1 Number of starts ......................................................................................27

4.20.2 Turning gear operation.............................................................................27

4.21 Coolers ...............................................................................................................27

5 Air-cooled machines .....................................................................................................29

5.1 General ...............................................................................................................29

5.2 Machine cooling ..................................................................................................29

5.3 Temperature of primary coolant ...........................................................................29

5.3.1 Temperature detectors .............................................................................29

6 Hydrogen-cooled or liquid-cooled machines ..................................................................31

6.1 General ...............................................................................................................31

6.2 Hydrogen pressure and purity in the casing..........................................................31

6.3 Machine housing and cover plates .......................................................................31

6.4 Stator winding terminals ......................................................................................31

6.5 Temperature of primary coolants, temperatures and temperature rises of the

machine ..............................................................................................................31

---------------------- Page: 6 ----------------------
60034-3  IEC:2005 – 5 –

6.6 Temperature detectors.........................................................................................33

6.7 Auxiliary system ..................................................................................................33

7 Machines for combustion gas turbines or combined cycle applications ...........................35

7.1 General ...............................................................................................................35

7.2 Service conditions ...............................................................................................35

7.2.1 General ...................................................................................................35

7.2.2 Primary coolant temperature ....................................................................35

7.2.3 Number of starts ......................................................................................37

7.2.4 Application of load ...................................................................................37

7.3 Rated output........................................................................................................37

7.4 Capabilities .........................................................................................................37

7.4.1 General ...................................................................................................37

7.4.2 Base capability ........................................................................................37

7.4.3 Temperature rise and temperature at base capability ................................41

7.4.4 Peak capability ........................................................................................41

7.5 Rating plate.........................................................................................................41

7.6 Temperature tests ...............................................................................................41

7.7 Operation as a synchronous compensator ............................................................41

Annex A (normative) Precautions to be taken when using hydrogen cooled turbine-

type synchronous machines ................................................................................................43

Bibliography .......................................................................................................................57

Figure 1 – Operation over ranges of voltage and frequency .................................................17

Figure 2 – Typical P-Q capability diagram ...........................................................................23

Figure 3 – Typical generator capability curves .....................................................................39

Figure A.1 – Example of a large hydrogen supply unit feeding one or more generators

(simplified diagram) ............................................................................................................55

---------------------- Page: 7 ----------------------
60034-3  IEC:2005 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –
Part 3: Specific requirements for cylindrical rotor
synchronous machines
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

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 60034-3 has been prepared by IEC Technical Committee 2:

Rotating machinery.

This fifth edition cancels and replaces the fourth edition published in 1988. This edition

constitutes a technical revision. The significant technical changes with respect to the previous

edition are as follows:

• the document has been consolidated and completely restructured. It was rewritten to a

considerable extent;

• the section on air cooled generators has been combined with that on hydrogen-cooled and

liquid cooled generators. Different requirements so far valid for air cooled generators

alone were modified in such a way that the requirements are now strictly bound to the

generator ratings but not longer to the machine type. As an example for the harmonisation

which took place the short circuit ratio of the air cooled generators were adjusted to those

for the other generators. The separate cooler sections for air cooled generators were

eliminated;
---------------------- Page: 8 ----------------------
60034-3  IEC:2005 – 9 –

• the standard was generally adjusted to the progress in generator control. The state of the

art control systems do not require the previous large power factors. They were reduced to

one minimum value instead of several value classes providing the prospects of reduced

generator costs. It was considered that the standards should not work as an unnecessary

cost driving factor;

• a normative Annex A has been added dealing with precautions to be taken when using

hydrogen as a coolant on turbine – type synchronous generators. Formerly only a guide

was provided. It was considered that aspects dealing with the safe operation of hydrogen

cooled generators must be taken seriously and must become normative.
The text of this standard is based on the following documents:
FDIS Report on voting
2/1315/FDIS 2/1326/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

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

IEC 60034 consists of the following parts, under the general title Rotating electrical machines:

Part 1: Rating and performance

Part 2: Methods for determining losses and efficiency of rotating electrical machinery

from tests (excluding machines for traction vehicles)
Part 3: Specific requirements for cylindrical rotor synchronous machines (this
publication)
Part 4: Methods for determining synchronous machine quantities from tests

Part 5: Degrees of protection provided by the integral design of rotating electrical

machines (IP code) – Classification
Part 6: Methods of cooling (IC Code)

Part 7: Classification of types of construction, mounting arrangements and terminal

box position (IM Code)
Part 8: Terminal markings and direction of rotation
Part 9: Noise limits
Part 11: Thermal protection
Part 12: Starting performance of single-speed three-phase cage induction motors

Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher

– Measurement, evaluation and limits of vibration severity

Part 15: Impulse voltage withstand levels of rotating a.c. machines with form-wound

stator coils
Part 16: Excitation systems for synchronous machines
Part 17: Cage induction motors when fed from converters – Application guide
Part 18: Functional evaluation of insulation systems

Part 19: Specific test methods for d.c. machines on conventional and rectifier-fed

supplies
---------------------- Page: 9 ----------------------
60034-3  IEC:2005 – 11 –
Part 20-1: Control motors – Stepping motors

Part 22: AC generators for reciprocating internal combustion (RIC) engine driven

generating sets
Part 23: Specification for the refurbishing of rotating electrical machines

Part 25: Guide for the design and performance of cage induction motors specifically

designed for converter supply

Part 26: Effects of unbalanced voltages on the performance of three-phase induction

motors

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

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in

the data related to the specific publication. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
---------------------- Page: 10 ----------------------
60034-3  IEC:2005 – 13 –
ROTATING ELECTRICAL MACHINES –
Part 3: Specific requirements for cylindrical rotor
synchronous machines
1 Scope

This part of IEC 60034 applies to three-phase cylindrical rotor synchronous machines, having

rated outputs of 10 MVA (or MW) and above. It supplements the basic requirements for

rotating machines given in IEC 60034-1. The special requirements of machines continuously

fed by inverters are not covered by this standard.

Common requirements for all cylindrical rotor machines are prescribed together with specific

requirements for air, for hydrogen or for liquid cooled cylindrical rotor synchronous machines.

This part of IEC 60034 also gives the precautions to be taken when using hydrogen cooled

machines including
– rotating exciters driven by cylindrical rotor type machines;
– auxiliary equipment needed for operating the machines;
– parts of the building where hydrogen might accumulate.
2 Normative references

The following referenced documents are indispensable for the application 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 60034-1, Rotating electrical machines – Part 1: Rating and performance

IEC 60034-4, Rotating electrical machines – Part 4: Methods for determining synchronous

machine quantities from tests
IEC 60045-1, Steam turbines – Part 1: Specifications
IEC 60079 (all parts), Electrical apparatus for explosive gas atmospheres
3 Terms and definitions

For the purposes of this document, the terms and definitions in IEC 60034-1 together with the

following additions apply.
3.1
mechanical start
change in speed from zero or turning gear speed to rated speed
---------------------- Page: 11 ----------------------
60034-3  IEC:2005 – 15 –
3.2
turning gear operation

rotation at low speed to maintain thermal equilibrium of the steam turbine and/or rotor

4 General
4.1 General rules

Cylindrical rotor machines shall be in accordance with the basic requirements for rotating

machines specified in IEC 60034-1 unless otherwise specified in this standard. Wherever in

this standard there is reference to an agreement, it shall be understood that this is an

agreement between the manufacturer and the purchaser.
4.2 Rated conditions
The rated conditions are given by the rated values of

– the apparent power for generators and compensators or the power at the shaft end for

motors;
– frequency;
– voltage;
– power factor;
– primary coolant temperature (40°C unless otherwise agreed upon);
and where applicable,
– site altitude;
– hydrogen pressure;
– range of hydrogen purity, see IEC 60034-1.
4.3 Rated voltage
The rated voltage shall be fixed by agreement.
4.4 Power factor
The power factor shall be agreed upon between the purchaser and manufacturer.

Standardised rated power factors at the generator terminals are 0,8, 0,85 and 0,9 overexcited.

Preferred power factors of motors are 0,95 overexcited and 1,0.

NOTE 1 Other values may be agreed upon, the lower the power factor the larger will be the machine.

NOTE 2 It is recommended that the generator should be capable of providing 0,95 underexcited power factor at

rated MVA.
4.5 Rated speed
The rated speed shall be
–1 –1
1 500 min or 3 000 min for 50 Hz machines;
–1 –1
1 800 min or 3 600 min for 60 Hz machines.

In cases of cylindrical rotor synchronous motors with six poles the speeds shall be

–1 –1
1 000 min for 50 Hz and 1 200 min for 60 Hz machines.
---------------------- Page: 12 ----------------------
60034-3  IEC:2005 – 17 –
4.6 Ranges of voltage and frequency

Machines shall be capable of continuous rated output at the rated power factor over the

ranges of ±5 % in voltage and ±2 % in frequency, as defined by the shaded area of Figure 1.

The temperature rise limits in Tables 7 and 8, or the temperature limits in Table 12 of

IEC 60034-1 shall apply at the rated voltage and frequency only.

NOTE 1 As the operating point moves away from the rated values of voltage and frequency, the temperature rise

or total temperatures may progressively increase. Continuous operation at rated output at certain parts of the

boundary of the shaded area causes temperature rises to increase by up to 10 K approximately. Machines will also

carry output at rated power factor within the ranges of ±5 % in voltage and % in frequency, as defined by the

outer boundary of Figure 1, but temperature rises will be further increased. Therefore, to minimize the reduction of

the machine's lifetime due to the effects of temperature or temperature differences, operation outside the shaded

area should be limited in extent, duration and frequency of occurrence. The output should be reduced or other

corrective measures taken as soon as practicable.

If an operation over a still wider range of voltage or frequency or deviations from rated

frequency and voltage of generators for combustion gas turbine application at peak load are

required, this should be the subject of an agreement.

NOTE 2 It is considered that overvoltage together with low frequency, or low voltage with over-frequency, are

unlikely operating conditions. The former is the condition most likely to increase the temperature rise of the field

winding. Figure 1 shows operation in these quadrants restricted to conditions that will cause the machine and its

transformer to be over- or under-fluxed by no more than 5 %. Margins of excitation and of stability will be reduced

under some of the operating conditions shown. As the operating frequency moves away from the rated frequency,

effects outside the generator may become important and need to be considered. As examples: the turbine

manufacturer will specify ranges of frequency and corresponding periods during which the turbine can operate; and

the ability of auxiliary equipment to operate over a range of voltage and frequency should be considered.

V %
105
103
f %
95 98 100 102 103
IEC 082/05

(See 4.6 for conditions relating to operation over the voltage and frequency shown above.)

Figure 1 – Operation over ranges of voltage and frequency
------------------
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.