prEN IEC 60034-15:2024

SLOVENSKI STANDARD
01-september-2024
Električni rotacijski stroji - 15. del: Nivoji vzdržljivosti na impulzno napetost
oblikovno navitih statorskih tuljav pri rotacijskih izmeničnih strojih
Rotating electrical machines - Part 15: Impulse voltage withstand levels of form-wound
stator coils for rotating a.c. machines
Drehende elektrische Maschinen - Teil 15: Steh-Stoßspannungspegel von Formspulen
im Ständer drehender Wechselstrommaschinen
Machines électriques tournantes - Partie 15: Niveaux de tenue au choc électrique des
bobines de stator préformées des machines tournantes à courant alternatif
Ta slovenski standard je istoveten z: prEN IEC 60034-15:2024
ICS:
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

2/2199/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60034-15 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-07-26 2024-10-18
SUPERSEDES DOCUMENTS:
2/2174/CD, 2/2193A/CC
IEC TC 2 : ROTATING MACHINERY
SECRETARIAT: SECRETARY:
United Kingdom Mr Charles Whitlock
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

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
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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
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submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Rotating electrical machines - Part 15: Impulse voltage withstand levels of form-wound stator coils
for rotating a.c. machines
PROPOSED STABILITY DATE: 2027
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
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IEC CDV 60034-15 © IEC 2024 – 2 – 2/2199/CDV
1 CONTENTS
2 FOREWORD . 4
3 INTRODUCTION . 6
4 1 Scope . 7
5 2 Normative references . 7
6 3 Terms and definitions . 7
7 4 Impulse voltage withstand levels . 9
8 4.1 General . 9
9 4.2 Impulse withstand levels . 9
10 4.3 Enhanced impulse withstand levels . 10
11 5 Sample tests . 11
12 5.1 General . 11
13 5.2 Standard lightning impulse voltage withstand test . 11
14 5.3 Steep-front impulse voltage withstand test . 12
15 5.4 Power-frequency voltage withstand test . 13
16 6 Routine tests . 13
17 7 Reporting . 13
18 (informative) Principles involved in the specification of impulse voltage withstand
19 levels and test procedures . 14
20 A.1 Impulse voltage stress of a machine winding . 14
21 A.2 Impulse voltage withstand level of a machine winding . 14
22 A.3 Indirect proof of impulse voltage withstand levels by sample tests on coils . 14
23 (informative) Testing details . 16
24 B.1 Introduction . 16
25 B.2 Principal circuit diagrams . 16
26 B.2.1 General . 16
27 B.2.2 Circuit diagram SLI test . 16
28 B.2.3 Circuit diagram SFI test . 16
29 B.3 Voltage measurement . 17
30 B.4 Practical layout of the test setup . 17
31 B.5 Oscillograms of tests on sample coils . 19
32 B.5.1 General . 19
33 B.5.2 Checking of input wave shape . 19
34 B.5.3 Standard lightning impulse . 19
35 B.5.4 Steep front impulses . 20
36 (normative) Requirements on sample coils . 24
37 C.1 Introduction . 24
38 C.2 Requirements for RR and SVPI sample coils . 24
39 C.3 Requirements for GVPI sample coils . 24
40 (normative) Routine steep-front impulse testing . 26
41 D.1 General . 26
42 D.2 Separate stator coils. 26
43 D.3 Complete stators . 27
44 D.4 Example of the test circuit for routine tests . 27
45 (normative) Procedure for calculation of parameters of lightning impulse voltages
46 with superimposed overshoot or oscillations . 28
47 E.1 Introduction . 28

IEC CDV 60034-15 © IEC 2024 – 3 – 2/2199/CDV
48 E.2 Terms and definitions . 28
49 E.3 Basis of the procedure . 31
50 E.4 Procedure for evaluation of parameters of lightning impulses . 31
51 (informative) Procedure for manual calculation from graphical waveforms . 34
52 (informative) Background to the introduction of the test voltage factor for evaluation
53 of impulses with overshoot . 35
54 G.1 Introduction . 35
55 G.2 Research and development to provide a solution . 36
56 G.3 Reference documents . 38
57 Bibliography . 39
59 Figure 1 – Impulse voltage curve . 8
60 Figure 2 – Full impulse voltage time parameters . 8
61 Figure B.1 – Standard lightning impulse circuit . 16
62 Figure B.2 – Steep front impulse circuit . 17
63 Figure B.3 – Layout for standard lightning impulse tests: Both connecting leads of the coil
64 connected to high potential, outside surface coil earthed. . 18
65 Figure B.4 – Layout for steep-front impulse tests: one connecting lead of the coil connected
66 to high potential, the other lead connected to earth. Coil outside surface earthed. . 18
67 Figure B.5 – Example of test setup steep-front impulse test . 19
68 Figure B.6 – Example of standard lightning impulse wave on an undamaged coil . 20
69 Figure B.7 – Magnified detail of standard lightning impulse wave as shown in Figure B.6 . 20
70 Figure B.8 – Example of steep front impulse on an undamaged coil . 21
71 Figure B.9 – Example of collected steep front impulses undamaged coils (5 negative pulses)21
72 Figure B.10 – Example of recorded wave of a failing coil . 22
73 Figure B.11 – Comparison of failing coil with undamaged coil . 22
74 Figure B.12 – Various break down graphs of five coils of same design . 23
75 Figure C.1 – Examples of GVPI slot simulations . 25
76 Figure D.1 – Example of the test circuit for routine tests . 27
77 Figure E.1 – Recorded and base curve showing overshoot and residual curve . 29
78 Figure E.2 – Test voltage function . 30
79 Figure E.3 – Test voltage curve (addition of base curve and filtered residual curve) . 30
80 Figure E.4 – Recorded and test voltage curves . 33
81 Figure G.1 – “Effective” test voltage function in IEC 60060-1:1989 . 35
82 Figure G.2 – Representative experimental points from European experiments and test
83 voltage function . 37
85 Table 1 – Standard impulse voltage withstand levels for sample coils used in AC rotating
86 machines . 10
IEC CDV 60034-15 © IEC 2024 – 4 – 2/2199/CDV
88 INTERNATIONAL ELECTROTECHNICAL COMMISSION
89 ____________
91 ROTATING ELECTRICAL MACHINES –
93 Part 15: Impulse voltage withstand levels
94 of stator coils for rotating AC machines
97 FOREWORD
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108 consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC
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