prEN IEC 60349-2:2025

SLOVENSKI STANDARD
01-oktober-2025
Železniške naprave - Rotacijski električni stroji za železniška in cestna vozila - 2.
del: Elektronsko napajani izmenični motorji
Electric traction - Rotating electrical machines for rail and road vehicles - Part 2:
Electronic converter-fed alternating current motors
Elektrische Zugförderung - Drehende elektrische Maschinen für Bahn- und
Straßenfahrzeuge - Teil 2: Umrichtergespeiste Wechselstrommotoren
Traction électrique - Machines électriques tournantes des véhicules ferroviaires et
routiers - Partie 2: Moteurs à courant alternatif alimentés par convertisseurs
électroniques
Ta slovenski standard je istoveten z: prEN IEC 60349-2:2025
ICS:
29.160.30 Motorji Motors
29.280 Električna vlečna oprema Electric traction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

9/3250/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60349-2 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-09-05 2025-11-28
SUPERSEDES DOCUMENTS:
9/3123/CD, 9/3172A/CC
IEC TC 9 : ELECTRICAL EQUIPMENT AND SYSTEMS FOR RAILWAYS
SECRETARIAT: SECRETARY:
France Mr Denis MIGLIANICO
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
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.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clau ses to
be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC c lauses.
(SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Electric traction – Rotating electrical machines for rail and road vehicles – Part 2: Electronic converter-fed
alternating current motors
PROPOSED STABILITY DATE: 2028
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.

IEC CDV 60349-2 © IEC 2025
CONTENTS
1 Scope and objective . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Environmental conditions . 11
b) Air temperature in the shade not exceeding Class T1 according to IEC 62498-1 . 11
5 Characteristics . 11
5.1 Exchange of information . 11
5.2 Reference temperature . 12
5.3 Specified characteristics . 12
5.4 Declared characteristics . 12
5.5 Efficiency characteristics . 12
5.6 Traction motor characteristics . 12
6 Marking . 13
7 Test categories . 13
7.1 General . 13
7.2 Type tests . 13
7.2.1 General . 13
7.2.2 Type tests on converter supply . 14
7.3 Reduced type test . 14
7.3.1 General . 14
7.3.2 Repeat the type test temperature rise test with converter . 14
7.3.3 Repeat a temperature rise test with converter with different load . 14
7.3.4 Repeat a temperature rise test with sinusoidal supply . 14
7.4 Routine tests . 15
7.5 Investigation tests . 15
7.6 Summary of tests . 15
8 Type tests . 15
8.1 Temperature-rise tests . 15
8.1.1 General . 15
8.1.2 Cooling during rating tests . 16
8.1.3 Measurement of temperature . 16
8.1.4 Judgement of results . 16
8.1.5 Limits of temperature rise . 16
8.1.6 Short-time overload test . 17
8.2 Characteristic tests and tolerances . 17
8.2.1 General . 17
8.2.2 Tolerances . 18
8.3 Overspeed test . 18
8.4 Vibration tests . 19
9 Routine tests . 19
9.1 General . 19
9.2 Short-time heating run . 20
9.3 Characteristic tests and tolerances . 20
9.3.1 Asynchronous motors . 20
9.3.2 Synchronous motors . 20
IEC CDV 60349-2 © IEC 2025
9.4 Overspeed tests . 20
9.5 Dielectric tests . 21
9.6 Vibration tests (imbalance) . 22
Annex A (normative) Measurement of temperature . 23
A.1 Temperature of the motor parts . 23
A.1.1 General . 23
A.1.2 Resistance method . 23
A.1.3 Thermometer method . 23
A.2 Temperature of the coolant . 24
A.2.1 Air cooling . 24
A.2.2 Liquid cooling . 24
A.3 Measurement of resistance . 24
A.3.1 Initial cold resistance . 24
A.3.2 Hot resistance . 24
A.4 Stopping of motors and time of “commencement of cooling” . 24
A.5 Time of the hot resistance measurement and extrapolation of the cooling and
heating curves . 25
Annex B (normative) Conventional values of traction motor transmission losses . 26
Annex C (informative) Noise measurement method and limits . 27
C.1 General . 27
C.2 Test conditions . 27
C.2.1 Preparation of the machine . 27
C.2.2 Operating conditions . 28
C.2.3 Background noise . 28
C.3 Measuring instruments . 28
C.3.1 Grade . 28
C.3.2 Calibration of measuring equipment . 28
C.3.3 Location of instruments and observer . 28
C.4 Method of measurement . 29
C.4.1 Method . 29
C.4.2 Location of measuring points . 29
C.4.3 Quantities to be determined . 29
C.5 Calculation . 29
C.5.1 Measurement corrections for background noise . 29
C.5.2 Calculation of the mean sound levels . 29
C.5.3 Calculation of the radius and area of the equivalent hemisphere. 30
C.5.4 Calculation of the approximate octave band power levels . 30
C.5.5 Calculation of (A) weighted sound power level . 31
C.5.6 Calculation of the octave band approximate mean sound pressure
level . 31
C.5.7 Calculation of the mean sound level (A) . 31
C.6 Correction for pure tones . 31
C.7 Noise limits . 32
Annex D (normative) Supply voltages of traction systems . 36
Annex E (normative) Agreement between user and manufacturer . 37
The tables E.1 to E.3 specify the special requirements between user and
manufacturer. . 37
IEC CDV 60349-2 © IEC 2025
Table E.2 - Special requirements of the manufacturer to be specified and agreed
with the user. 37
Table E.3 - Other special requirements which may be the subject to an agreement
between user and manufacturer . 38
Annex F (normative) Auxiliary motors . 40
F.1 General . 40
F.2 Requirements . 41

Figure B.1 – Conventional values of traction motor transmission losses . 24
Figure C.1 – Limiting mean sound power level for airborne noise emitted by traction
motors . 30
Figure C.2 – Location of measuring points and prescribed paths for horizontal
machines . 32
Figure C.3 – Location of measuring points and prescribed paths for vertical machines . 33

Table 1 – Summary of tests . 13
Table 2 – Limits of temperature rise for continuous and other ratings . 14
Table 3 – Temperature rises for short-time overload ratings . 15
Table C.1 – Corrections . 26
Table C.2 – Corrections . 29
Table C.3 – Correction for pure tones . 30
Table E.1 - Special requirements of the user to be specified and agreed with the
manufacturer . 35
Table F.1 - Requirements for auxiliary motors . 39

IEC CDV 60349-2 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC TRACTION –
ROTATING ELECTRICAL MACHINES FOR RAIL AND ROAD VEHICLES –

Part 2: Electronic converter-fed alternating current motors

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
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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 60349-2 has been prepared by IEC technical committee 9: Electrical
equipment and systems for railways.
This fourth edition cancels and replaces the third edition published in 2010. It constitutes a
technical revision.
The main technical changes with regard to the previous edition are as follows:
– Liquid cooling was included
– Reduced type test was detailed
– Use of PWM converters for routine test
– Reference to IEC 61373 removed
– Scope has been modified in order to avoid conflicts with part 4
– Annex F has been added to better specify requirements of auxiliary motors that in many
aspects are different with respects to those of traction motors.
IEC CDV 60349-2 © IEC 2025
The text of this standard is based on the following documents:
FDIS Report on voting
9/xxxx/FDIS 9/xxxx/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.
The list of all parts of IEC 60349 series, published under the general title, Electric traction –
Rotating electrical machines for rail and road vehicles, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
stability 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.
IEC CDV 60349-2 © IEC 2025
1 ELECTRIC TRACTION –
2 ROTATING ELECTRICAL MACHINES FOR RAIL AND ROAD VEHICLES –
4 Part 2: Electronic converter-fed alternating current motors
8 1 Scope and objective
9 This part of IEC 60349 applies to converter-fed alternating current motors forming part of the
10 equipment of electrically propelled rail and road vehicles, with exception of those synchronous
11 electrical machines that are in the scope of Part 4.
12 The object of this part is to enable the performance of a motor to be confirmed by tests and to
13 provide a basis for assessment of its suitability for a specified duty and for comparison with
14 other motors.
15 This part also applies to motors installed on trailers hauled by powered vehicles.
16 The basic requirements of this part may be applied to motors for special purpose vehicles such
17 as mine locomotives but this part does not cover flameproof or other special features that may
18 be required.
19 It is not intended that this part apply to motors on small road vehicles, such as battery-fed
20 delivery vehicles, factory trucks, etc. This part also does not apply to minor machines such as
21 windscreen wiper motors, etc. that may be used on all types of vehicles.
22 The electrical input to motors covered by this part comes from an electronic converter.
23 At the time of drafting, only the following combinations of motors and converters had been used
24 for traction applications, but it may also apply to other combinations which may be used in the
25 future:
26 – asynchronous motors fed by electronic converters;
27 – synchronous motors with wound rotor fed by electronic converters.
29 The motors covered by this part are classified as follows Traction motors (Motors for propelling
30 rail or road vehicles).
31 The machines covered by this part are classified as follows:
32 a) Traction motors
33 Motors for propelling rail or road vehicles, to which this International Standard applies from
34 Clause 2 to Annex E.
35 b) Auxiliary motors
36 Motors for driving compressors, fans, pumps, auxiliary generators or other auxiliary
37 machines, to which this International Standard and other IEC publications apply according
38 to Annex F (normative).
43 2 Normative references
44 The following documents are referred to in the text in such a way that some or all of their content
45 constitutes requirements of this document. For dated references, only the edition cited applies.
IEC CDV 60349-2 © IEC 2025
46 For undated references, the latest edition of the referenced document (including any
47 amendments) applies.
48 IEC 60034-1:2022, Rotating electrical machines – Part 1: Rating and performance
49 IEC 60034-8, Rotating electrical machines – Part 8: Terminal markings and direction of rotation
50 IEC 60034-9, Rotating electrical machines – Part 9 – Noise limits
51 IEC 60034-17, Rotating electrical machines – Part 17: Cage induction motors when fed from
52 convertors – Application guide
53 IEC 60085, Thermal evaluation and designation
54 IEC 60850, Railway applications – Supply voltages of traction systems
55 IEC 61672, Electroacoustics – Sound level meters
56 IEC 62498-1:2010, Railway applications – Environmental conditions for equipment – Part 1:
57 Equipment on board rolling stock
58 IEC 60034-2-1, Rotating electrical machines – Part 2-1: Standard methods for determining
59 losses and efficiency from tests (excluding machines for traction vehicles)
60 IEC 60034-2-3, Rotating electrical machines – Part 2-3: Specific test methods for determining
61 losses and efficiency of converter-fed AC motors
62 IEC 60034-12, Rotating electrical machines - Part 12: Starting performance of single-speed
63 three-phase cage induction motors
64 IEC 60034-14, Rotating electrical machines – Part 14: Mechanical vibration of certain machines
65 with shaft heights 56 mm and higher – Measurement, evaluation and limits of vibration severity
66 IEC 60034-18-41: 2014+AMD1:2019 CSV, Rotating electrical machines – Part 18-41: Partial
67 discharge free electrical insulation systems (Type I) used in rotating electrical machines fed
68 from voltage converters – Qualification and quality control tests
69 IEC 60034-18-42: 2017 CSV, Rotating electrical machines – Part 18-42: Partial discharge
70 resistant electrical insulation systems (Type II) used in rotating electrical machines fed from
71 voltage converters – Qualification tests
72 IEC 60038:2009, IEC standard voltages
73 IEC 61287-1:2014, Railway applications – Power converters installed on board rolling stock –
74 Part 1: Characteristics and test methods
75 IEC 61000-4-7, Electromagnetic compatibility (EMC) – Part 4-7: Testing and measurement
76 techniques – General guide on harmonics and interharmonics measurements and
77 instrumentation, for power supply systems and equipment connected thereto
78 IEC 60417 Database - Graphical symbols for use on equipment
IEC CDV 60349-2 © IEC 2025
80 3 Terms and definitions
81 For the purposes of this document, the terms and definitions given in IEC 60050-131,
82 IEC 60050-151, IEC 60050-411 and IEC 60050-811 and the following apply.
83 ISO and IEC maintain terminological databases for use in standardization at the following
84 addresses:
85 •  ISO Online browsing platform: available at https://www.iso.org/obp
86 •  IEC Electropedia: available at http://www.electropedia.org/
87 3.1
88 rated value
89 quantity value assigned, generally by a manufacturer, for a specified operating condition of a
90 machine
91 Note 1 to entry: The rated voltage or voltage range is the rated voltage or voltage range between lines at the
92 terminals.
93 [SOURCE: IEC 60050-411:1996, 411-51-23 modified – Note 1 to entry has been added]
94 3.2
95 rating
96 set of rated values and operating conditions
97 [SOURCE: IEC 60050-411:1996, 411-51-24]
98 3.3
99 Continuous rating
100 combination of rated values at which the vehicle, machine or apparatus is able to operate
101 continuously without exceeding for any part the specified limits of temperature rise given in
102 Table 2
103 [SOURCE: IEC 60050-811:2017, 811-11-05 modified]
104 Note 1 to entry: Several continuous ratings may be specified.
105 3.4
106 Short-time rating (for example, one hour)
107 mechanical output that the motor can deliver on the test bed for the stated time without
108 exceeding the limits of temperature rise given in Table 2
109 Note 1 to entry: The test being carried out as specified in 8.1 starting with the motor cold, all other appropriate
110 requirements in this part being also satisfied
111 3.5
112 Short-time overload rating
113 mechanical output that the motor can deliver on the test bed for the stated time without exceeding the limits of
114 temperature rise given in Table 3Note 1 to entry: Short-time overload ratings are of value in determining the suitability
115 of motors for duties which involve relatively long periods of operation below the continuous rating followed by a
116 period above it. These are most likely to occur in locomotive applications. They are not relevant to the repeated short
117 load cycles of rapid transit and similar duties, and should not be specified for such applications.
118 Note 2 to entry: the test being started and carried out as specified in 8.1.6
IEC CDV 60349-2 © IEC 2025
119 3.6
120 Intermittent duty rating
121 duty cycle in which the motor may be operated without the temperature rises exceeding the
122 limits given in Table 2 at any point
123 3.7
124 Equivalent rating
125 continuous rating with constant values of voltage, current and speed that, as far as temperature
126 rise is concerned, is equivalent to the intermittent duty cycle which the motor has to w ithstand
127 in service
128 Note 1 to entry: This rating should be agreed between user and manufacturer.
129 3.8
130 Guaranteed rating
131 rating assigned by the manufacturer for test purposes
132 [SOURCE: IEC 60050-811:2017, 811-13-39]
133 Note 1 to entry: Normally the continuous rating but in special cases the user and manufacturer may agree that it be
134 a short-time or intermittent, or equivalent rating.
135 3.9
136 Rated voltage
137 root-mean-square value of the fundamental component of the line-to-line voltage applied to a
138 motor when it is operating at a guaranteed rating
139 Note 1 to entry: For motors fed directly or indirectly from a contact system, it is normally the highest voltage
140 (excluding transients) which can be applied to the motor when it is drawing the rated current, with the contact system
141 at its nominal voltage as defined in Annex D.
142 3.10
143 Maximum voltage
144 highest root-mean-square value of the fundamental component of the line-to-line voltage which
145 can be applied to the motor in service
146 3.11
147 Repetitive peak voltage
148 peak value of the waveform of the converter output voltage, any random transient peaks arising
149 from transients of traction system supply voltage or other causes being disregarded
150 .
151 3.12
152 Maximum working speed
153 highest rotational speed assigned to the motor by the manufacturer
154 Note 1 to entry: When the characteristics of the vehicle for which a traction motor is intended are specified, this
155 speed is not less than that corresponding to the maximum service speed of the vehicle assuming fully worn metallic
156 wheels or the minimum rolling diameter of rubber tyres.
158 3.13
159 Total harmonic distortion - THD
160 ratio of the RMS value of the sum of all the harmonic components (Gn) up to a specified order
161 (H) to the RMS value of the fundamental component (G1):
163 Note 1 to entry: The symbol G represents the RMS value of the harmonic component (see IEC 61000-4-7, chapter
164 3.2.3). It is replaced, as required, by the symbol I for currents or by the symbol U for voltages.
IEC CDV 60349-2 © IEC 2025
165 Note 2 to entry: The value of H is 50
167 3.14
168 user
169 normally the end customer, but can be delegated to an other organization
170 3.15
171 manufacturer
172 producer of machines
174 3.16
175 traction motor
176 motor for propelling rail or road vehicles
178 3.17
179 auxiliary motor
180 motor for driving compressors, fans, pumps, auxiliary generators or other auxiliary machines
181 For the purposes of this Annex the following terms and definitions apply.
183 3.18
184 sound pressure level
185 sound pressure level L , expressed in decibels as
p
p
186 L = 20log
p
p
187 where
188 p is the measured sound pressure;
189 p is the reference sound pressure expressed in the same units as p.
–5
190 p = 210 Pa or 20 Pa
192 3.19
193 sound level
194 reading given by a sound level meter complying with IEC 61672
195 3.20
196 noise spectrum
197 spectrum showing the sound pressure/power level distribution throughout the frequency range.
198 Note 1 to entry The appearance of the spectrum depends on the bandwidth characteristics of the analyser used
199 3.21
200 band pressure level
201 for a specified frequency band, the effective sound pressure level corresponding to the sound
202 energy contained within the band
203 3.22
204 sound power level
205 sound power level L is expressed in decibels as
w
W
206 L = 10log
w
W
IEC CDV 60349-2 © IEC 2025
207 where
208 W is the measured sound power;
209 W is the reference sound power expressed in the same unit as W
–12
210 W = 10 W (or 1 pW)
211 Note 1 to entry L is a weighted sound power level determined in such a manner that the acoustic power level in
WA
212 each of the frequency bands is weighted according to the A scale.
213 3.23
214 prescribed path
215 imaginary line around the machine as detailed in this annex and along which the measure ment
216 points are located
217 3.24
218 equivalent hemisphere
219 hypothetical hemisphere surrounding the machine on which the measurements are assumed to
220 be made, its radius being denoted by r
s
221 4 Environmental conditions
222 Unless otherwise specified by the user, the following environmental conditions are assumed:
223 a) Altitude not exceeding Class A3 according to IEC 62498-1
224 b) Air temperature in the shade not exceeding Class T1 according to IEC 62498-1
226 Whenever motors are intended to operate where one or both of these limits will be exceeded,
227 special requirements may be agreed between user and manufacturer according to Annex E. For
228 more information refer to IEC 60034-1.
229 Furthermore, the user shall inform the manufacturer of any particularly severe environmental
230 condition such as dust, humidity, temperature, snow, dynamic effects, etc., to which the motors
231 will be subjected.
232 5 Characteristics
233 5.1 Exchange of information
234 The rating of traction motors fed in parallel by a common converter has to take into account the
235 effect on load-sharing of differences of wheel diameter and of motor characteristics as well as
236 weight transfer when operating at high coefficients of adhesion. The user is to be informed of
237 the maximum permissible difference in wheel diameter for the particular application.
238 The motor and converter designers shall collaborate to produce all the technical information
239 necessary to ensure that the combined unit will meet the requirements of this part of IEC 60349.
240 To fulfil this requirement, the motor designer shall provide the converter designer with all the
241 information necessary to fully evaluate the interaction between the motor and the converter.
242 The converter designer shall also provide the motor designer with the characteristics showing,
243 for example, the converter line-to-line output voltage (including the repetitive voltage peaks),
244 current, fundamental frequency, harmonics and power over the whole range of the application,
245 including operation at the maximum and minimum values of the contact-system voltage.
IEC CDV 60349-2 © IEC 2025
246 The documents recording this exchange of information shall form an integral part of the
247 specification of the motor and of the converter.
248 NOTE 1 For more information refer to IEC 61287-1, 5.3.2.2
249 NOTE 2 The length of cable run between motor and converter can have an effect on peak voltages seen at the motor
250 terminals.
251 NOTE 3 For information about wave fronts and the impact to the motor see IEC 60034-17.
252 5.2 Reference temperature
253 All characteristics, irrespective of the thermal class of the insulation system used on the motor
254 to which they apply, shall be drawn for a winding reference temperature of 150 °C which shall
255 be stated in the characteristics.
256 5.3 Specified characteristics
257 Motor specifications shall, as a general rule, include characteristic curves in accordance with
258 5.5 and 5.6. These curves, defined as the "specified characteristics", shall be plotted to the
259 designed operating limits of each variable. Unless otherwise agreed between user and
260 manufacturer, the characteristics shall show the machine performance at the nominal voltage
261 of the supply system as defined in Annex D, and shall be submitted to the user before the order
262 for the motors is placed.
263 5.4 Declared characteristics
264 Declared characteristics are derived from the results of type tests carried out in accordance
265 with 8.2.1 and shall meet the requirements of 8.2.2.
266 Unless previously agreed, the declared characteristics of motors electromagnetically identical
267 with any previously manufactured for the same user or application shall be those of the existing
268 motors. In such a case, compliance with the characteristics shall be demonstrated by routine
269 tests only.
271 5.5 Efficiency characteristics
272 Efficiency characteristics shall take into account losses arising from the harmonics in the supply
273 from the converter. Power used for excitation of synchronous motors shall also be included in
274 the losses unless otherwise accounted for, (e.g. as an auxiliary load), in which case the
275 omission shall be stated in the characteristics.
276 5.6 Traction motor characteristics
277 The specified and declared characteristics of a traction motor shall be the converter-fed variable
278 frequency characteristics, which shall show motor line-to-line voltage, current, frequency, mean
279 torque and efficiency as a function of speed over the whole range of application of the motor.
280 Characteristics of asynchronous motors shall show slip and those of synchronous motors shall
281 show the excitation current. Voltage curves shall show the root-mean-square value of the
282 fundamental component. Current curves shall show the root-mean-square value of the
283 fundamental component and the total root-mean-square value. For motors used in the braking
284 mode, similar characteristics shall be produced showing the torque input and the electrical
285 output as a function of motor speed.
286 As an alternative to motor torque and speed, the characteristics may show tractive effort at the
287 rail and vehicle speed, in which case the gear ratio, wheel diameter and transmission losses
288 shall be stated. If conventional values are used for the latter, they shall be in accordance with
289 Figure B.1.in Annex B.
IEC CDV 60349-2 © IEC 2025
290 NOTE 1 Subclause 5.1 refers to the need for the exchange of information between the designers of the motor and
291 of the converter.
292 NOTE 2 Clause 1 refers to the need to consider the effect on parallel-fed motors of differing wheel diameters and of
293 weight transfer between axles.
294 6 Marking
295 All motors covered by this part of IEC 60349 shall carry a nameplate including at least the
296 following information:
297 a) Manufacturer's name.
298 b) Motor type designation.
299 c) Motor serial number.
300 d) Year of manufacture.
301 Furthermore, a serial number shall be punched on both the stator and rotor of every motor, and
302 motors designed for unidirectional rotation shall carry an arrow indicating the direction of
303 rotation.
304 The motor serial number and rotation arrow should be easily readable when the motor is
305 installed in the vehicle.
306 All motors covered by this part of IEC 60349 shall carry a earthing marking plate which is near
307 to the earthing stub acc. IEC 60417, reference number 5019.
308 Terminal and lead markings shall be in accordance with IEC 60034-8 unless otherwise agreed.
309 7 Test categories
310 7.1 General
311 There are four categories of tests:
312 – type tests;
313 – reduced type test;
314 – routine tests;
315 – investigation tests.
316 Where further testing is to be undertaken in accordance with IEC 61377, it may be preferable,
317 to avoid duplication, that some type and investigation tests be carried out on the combined test
318 bed.
319 7.2 Type tests
320 7.2.1 General
321 Type tests are intended to prove the ratings, characteristics and performance of new types of
322 motor. They shall be carried out on one motor of every new design. Unless otherwise agreed,
323 the motor shall be one of the first ten manufactured. Where there is a change in place and/or
324 method of manufacture, refer to 7.3.
325 Before testing commences, the manufacturer shall provide the user with a test specification
326 outlining the tests to be undertaken to demonstrate compliance with this standard. Following
327 completion of the type tests, the manufacturer shall supply the user with a full test report.
IEC CDV 60349-2 © IEC 2025
328 7.2.2 Type tests on converter supply
329 If each motor is fed by its own converter, the type test shall preferably be carried out using the
330 converter to be employed in service, but, as an alternative, a supply which closely resembles
331 the supply from the vehicle converter in waveform and harmonics may be employed.
332 If several motors are fed in parallel from a single converter, the type test shall be carried out
333 on a single motor using a supply closely resembling the supply from the vehicle converter in
334 waveform and harmonics.
335 If agreed, the manufacturer shall demonstrate the similarity of the test and service supplies,
336 and shall state the likely effect on the performance of the motor of any difference between them.
337 Unless otherwise agreed, the type test shall be repeated if the electrical output characteristics
338 of the converter are changed.
339 7.3 Reduced type test
340 7.3.1 General
341 The reduced type test consists of the routine test and one temperature rise test out of 7.3.2 to
342 7.3.4. This reduced type test is applicable to demonstrate the similarity in repeat orders or
343 change of place and/or method of manufacture or for motors of the same electromagnetic and
344 cooling design at the same or higher rating.
345 If a reduced type test is planned and a repeat temperature rise test according to 7.3.2 is not
346 chosen, this additional temperature rise test out of 7.3.3. and 7.3.4  shall be performed as part
347 of the full type test to obtain the reference for the planned reduced type test .
348 The test parameters shall be maintained for any subsequent test on that design of m otor.
349 The temperature rise measurements shall be carried out as detailed in 8.1.
350 If all of the following conditions are fulfilled, the full type test can be replaced by this reduced
351 type test.
352 a) The agreement between the user and the manufacturer is made.
353 a) The results of the reduced type test are within the tolerances established on the previous
354 motors.
355 b) The manufacturer provides a full type test report for a previous motor of the same
356 electromagnetic and cooling design at the same or higher rating.
357 7.3.2 Repeat the type test temperature rise test with converter
358 Use the same setup, voltage, frequency, torque, cooling and test duration of the type test again
359 (refer to 7.2.2).
360 7.3.3 Repeat a temperature rise test
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