FprEN IEC 60034-1:2021

SLOVENSKI STANDARD
oSIST prEN IEC 60034-1:2021
01-maj-2021
Električni rotacijski stroji - 1. del: Nazivni podatki in preskus lastnosti
Rotating electrical machines - Part 1: Rating and performance
Drehende elektrische Maschinen - Teil 1: Bemessung und Betriebsverhalten
Machines électriques tournantes - Partie 1: Caractéristiques assignées et
caractéristiques de fonctionnement
Ta slovenski standard je istoveten z: prEN IEC 60034-1:2021
ICS:
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
oSIST prEN IEC 60034-1:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 60034-1:2021
oSIST prEN IEC 60034-1:2021
2/2043/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60034-1 ED14
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-03-12 2021-06-04
SUPERSEDES DOCUMENTS:
2/2006/CD, 2/2020A/CC
IEC TC 2 : ROTATING MACHINERY
SECRETARIAT: SECRETARY:
United Kingdom Mr Charles Whitlock
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

TC 18
Other TC/SCs are requested to indicate their interest, if any, in this
CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of CENELEC,
is drawn to the fact that this Committee Draft for Vote (CDV) is
submitted for parallel voting.
The CENELEC members are invited to vote through the CENELEC
online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are aware
and to provide supporting documentation.

TITLE:
Rotating electrical machines – Part 1: Rating and performance

PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

oSIST prEN IEC 60034-1:2021
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CONTENTS
CONTENTS . 2
FOREWORD . 7
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 12
4 Duty . 17
Declaration of duty . 17
Duty types . 18
4.2.1 Duty type S1 – Continuous running duty . 18
4.2.2 Duty type S2 – Short-time duty . 19
4.2.3 Duty type S3 – Intermittent periodic duty . 19
4.2.4 Duty type S4 – Intermittent periodic duty with starting . 20
4.2.5 Duty type S5 – Intermittent periodic duty with electric braking. 22
4.2.6 Duty type S6 – Continuous operation periodic duty . 23
4.2.7 Duty type S7 – Continuous operation periodic duty with electric braking . 24
4.2.8 Duty type S8 – Continuous operation periodic duty with related
load/speed changes . 25
4.2.9 Duty type S9 – Duty with non-periodic load and speed variations . 26
4.2.10 Duty type S10 – Duty with discrete constant loads and speeds . 27
5 Rating. 28
Assignment of rating . 28
Classes of rating . 29
5.2.1 Rating for continuous running duty . 29
5.2.2 Rating for short-time duty . 29
5.2.3 Rating for periodic duty . 29
5.2.4 Rating for non-periodic duty . 29
5.2.5 Rating for duty with discrete constant loads and speeds . 29
5.2.6 Rating for equivalent loading . 30
Selection of a class of rating . 30
Allocation of outputs to class of rating . 30
Rated output . 30
5.5.1 DC generators . 30
5.5.2 AC generators . 31
5.5.3 Motors . 31
5.5.4 Synchronous compensators . 31
Rated voltage . 31
5.6.1 DC generators . 31
5.6.2 AC generators . 31
5.6.3 AC motors . 31
Preferred combinations of voltages and outputs . 31
Machines with more than one rating . 32
6 Site conditions . 32
General . 32
Altitude . 32
Maximum ambient air temperature . 32

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Minimum ambient air temperature . 32
Water coolant temperature . 32
Standstill, storage and transport . 32
Purity of hydrogen coolant . 33
7 Electrical operating conditions . 33
Electrical supply . 33
Form and symmetry of voltages and currents . 34
7.2.1 AC motors . 34
7.2.2 AC generators . 35
7.2.3 Synchronous machines . 35
7.2.4 DC motors supplied from static power converters . 36
Voltage during starting of AC motors . 37
Voltage and frequency variations during operation . 37
Three-phase AC machines operating on unearthed systems . 39
Voltage (peak and gradient) withstand levels . 39
8 Thermal performance and tests . 40
Thermal class . 40
Reference coolant . 40
Conditions for thermal tests . 41
8.3.1 Electrical supply . 41
8.3.2 Temperature of machine before test . 41
8.3.3 Temperature of coolant . 41
8.3.4 Measurement of coolant temperature during test . 41
Temperature rise of a part of a machine . 42
Methods of measurement of temperature . 42
8.5.1 General . 42
8.5.2 Resistance method . 42
8.5.3 Embedded temperature detector (ETD) method . 42
8.5.4 Thermometer method. 42
Determination of winding temperature . 43
8.6.1 Choice of method . 43
8.6.2 Determination by resistance method . 43
8.6.3 Determination by ETD method . 45
8.6.4 Determination by thermometer method . 46
Duration of thermal tests . 46
8.7.1 Rating for continuous running duty . 46
8.7.2 Rating for short-time duty . 46
8.7.3 Rating for periodic duty . 46
8.7.4 Ratings for non-periodic duty and for duty with discrete constant loads . 46
Determination of the thermal equivalent time constant for machines of duty
type S9 . 46
Measurement of bearing temperature . 46
Limits of temperature and of temperature rise . 47
8.10.1 General . 47
8.10.2 Indirect cooled windings . 47
8.10.3 Direct cooled windings . 52
8.10.4 Adjustments to take account of hydrogen purity on test . 53

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8.10.5 Permanently short-circuited windings, magnetic cores and all structural
components (other than bearings) whether or not in contact with
insulation . 53
8.10.6 Commutators and sliprings, open or enclosed and their brushes and
brushgear . 53
9 Other performance and tests . 55
Routine tests. 55
Withstand voltage test . 56
Occasional excess current . 59
9.3.1 General . 59
9.3.2 Generators . 60
9.3.3 Motors (except commutator motors and permanent magnet motors) . 60
9.3.4 Commutator machines . 60
Momentary excess torque for motors . 60
9.4.1 Polyphase induction motors and
...