prEN IEC 60939-3:2023

SLOVENSKI STANDARD
oSIST prEN IEC 60939-3:2023
01-junij-2023
Pasivni filtri za dušenje elektromagnetnega motenja - 3. del: Enote pasivnih filtrov,
za katere varnostni preskusi ustrezajo
Passive filter units for electromagnetic interference suppression - Part 3: Passive filter
units for which safety tests are appropriate
Passive Filter für die Unterdrückung von elektromagnetischen Störungen - Teil 3: Filter,
für die Sicherheitsprüfungen vorgeschrieben sind
Filtres passifs d'antiparasitage - Partie 3: Filtres passifs pour lesquels des essais de
sécurité sont appropriés
Ta slovenski standard je istoveten z: prEN IEC 60939-3:2023
ICS:
31.160 Električni filtri Electric filters
oSIST prEN IEC 60939-3:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 60939-3:2023

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oSIST prEN IEC 60939-3:2023
40/3034/CDV

COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60939-3 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-04-14 2023-07-07
SUPERSEDES DOCUMENTS:
40/2945/CD, 40/2979/CC

IEC TC 40 : CAPACITORS AND RESISTORS FOR ELECTRONIC EQUIPMENT
SECRETARIAT: SECRETARY:
Netherlands Mr Ronald Drenthen
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
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,
• any relevant “in some countries” clauses to be included should this proposal proceed. Recipients are reminded that
the enquiry stage is the final stage for submitting "in some countries" clauses. See AC/22/2007.

TITLE:
Passive filter units for electromagnetic interference suppression - Part 3: Passive filter units for which
safety tests are appropriate

PROPOSED STABILITY DATE: 2032

NOTE FROM TC/SC OFFICERS:

Copyright © 2023 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
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.

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oSIST prEN IEC 60939-3:2023
IEC CDV 60939-3 © IEC 2023 – 2 – 40/3034/CDV
1 CONTENTS
2 CONTENTS. 2
3 FOREWORD . 8
4 1 Scope . 10
5 2 Normative references . 10
6 3 Terms and definitions . 11
7 4 General requirements . 15
8 4.1 Classification and usage of class X and Y capacitors . 15
9 4.1.1 General . 15
10 4.1.2 Class X capacitors . 15
11 4.1.3 Class Y capacitors . 16
12 4.2 Information to be given in a detail specification . 17
13 4.2.1 General . 17
14 4.2.2 Outline drawing and dimensions. 17
15 4.2.3 Mounting . 17
16 4.2.4 Ratings and characteristics . 17
17 4.3 Marking . 18
18 4.3.1 General . 18
19 4.3.2 Coding . 18
20 4.3.3 Marking details. 18
21 4.3.4 Marking of filters . 18
22 4.3.5 Marking of packaging . 18
23 4.3.6 Additional marking . 18
24 4.4 Components . 18
25 4.5 Overcurrent protective devices . 19
26 4.6 Wiring and Insulation . 19
27 4.6.1 General . 19
28 4.6.2 Sleeving, tubing and wire insulation . 19
29 4.6.3 Properties of insulation material . 19
30 4.7 Protective Bonding Conductors . 19
31 4.8 Corrosion . 20
32 5 Preferred ratings and characteristics . 20
33 5.1 Preferred characteristics . 20
34 5.1.1 General . 20
35 5.1.2 Preferred climatic categories . 20
36 5.2 Preferred values of ratings . 20
37 5.2.1 Rated voltage (U ) . 20
R
38 5.2.2 Rated temperature . 20
39 5.2.3 Passive flammability . 20
40 6 Test plan for safety tests . 21
41 6.1 Structurally similar filters . 21
42 6.2 Safety approval procedure . 21
43 6.2.1 General . 21
44 6.2.2 Sampling . 21
45 6.2.3 Tests. 22

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46 6.3 Requalification tests . 22
47 7 Test and measurement procedures . 23
48 7.1 General . 23
49 7.1.1 General . 23
50 7.1.2 Standard atmospheric conditions . 23
51 7.1.3 Standard atmospheric conditions for testing . 23
52 7.1.4 Recovery conditions . 23
53 7.1.5 Referee conditions . 23
54 7.1.6 Reference conditions . 24
55 7.1.7 Drying . 24
56 7.2 Visual examination and check of dimensions . 24
57 7.2.1 Visual examination . 24
58 7.2.2 Dimensions (gauging) . 24
59 7.2.3 Dimensions (detail) . 24
60 7.2.4 Creepage distances and clearances . 24
61 7.3 Inductance measurement . 27
62 7.3.1 General . 27
63 7.3.2 Measuring conditions . 27
64 7.4 Earth inductors incorporated in filters . 27
65 7.5 Capacitance . 27
66 7.5.1 General . 27
67 7.5.2 Measuring conditions . 27
68 7.6 Insertion loss . 28
69 7.7 Insulation resistance . 28
70 7.7.1 General . 28
71 7.7.2 Measuring voltage . 28
72 7.7.3 Application of measuring voltage . 29
73 7.7.4 Mean time to measuring . 30
74 7.7.5 Temperature correction factor . 30
75 7.7.6 Information to be given in a detail specification . 30
76 7.7.7 Requirements . 32
77 7.8 Voltage proof. 33
78 7.8.1 General . 33
79 7.8.2 Test procedure . 33
80 7.8.3 Applied voltage . 33
81 7.8.4 Tests. 34
82 7.8.5 Requirements . 35
83 7.8.6 Repetition of the voltage proof test. 35
84 7.8.7 Information to be given in a detail specification . 35
85 7.8.8 Requirements . 35
86 7.9 DC line resistance or voltage drop at rated current . 35
87 7.9.1 General . 35
88 7.9.2 DC line resistance . 35
89 7.9.3 Voltage drop at rated current . 35
90 7.10 Discharge resistance . 35
91 7.10.1 General . 35
92 7.10.2 Resistor Test . 36

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93 7.11 Capacitor discharge . 36
94 7.11.1 General . 36
95 7.11.2 Discharge measurement . 37
96 7.12 Robustness of terminations . 37
97 7.12.1 General . 37
98 7.12.2 Test Ua1 – Tensile . 37
99 7.12.3 Test Ub – Bending . 37
100 7.12.4 Test Uc – Torsion. 37
101 7.12.5 Test Ud – Torque . 37
102 7.12.6 Visual examination . 39
103 7.13 Resistance to soldering heat . 39
104 7.13.1 Applicability of the test . 39
105 7.13.2 Pre-measurement . 39
106 7.13.3 Test conditions . 39
107 7.13.4 Test severity . 39
108 7.13.5 Intermediate inspection, measurements and requirements . 39
109 7.14 Climatic sequence . 39
110 7.14.1 General . 39
111 7.14.2 Initial measurements . 39
112 7.14.3 Dry heat . 39
113 7.14.4 Damp heat, cyclic. 40
114 7.14.5 Cold . 40
115 7.14.6 Low air pressure . 40
116 7.14.7 Damp heat, cyclic, remaining cycles . 40
117 7.14.8 Final inspection, measurements and requirements . 40
118 7.15 Damp heat, steady state . 41
119 7.15.1 Pre-measurements . 41
120 7.15.2 Test method . 41
121 7.15.3 Test conditions . 41
122 7.15.4 Final inspection, measurements and requirements . 41
123 7.16 Temperature rise . 41
124 7.16.1 General . 41
125 7.16.2 Test method . 42
126 7.16.3 Test description . 42
127 7.16.4 Requirements . 43
128 7.17 Current overload . 44
129 7.17.1 Pre-measurements . 44
130 7.17.2 Test method . 44
131 7.17.3 Final inspection, measurements and requirements . 44
132 7.18 Leakage current . 44
133 7.19 Protective conductor resistance . 45
134 7.20 Impulse voltage . 45
135 7.20.1 General . 45
136 7.20.2 Initial measurements . 45
137 7.20.3 Test conditions . 45
138 7.20.4 Requirements . 46
139 7.21 Endurance . 46

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140 7.21.1 General . 46
141 7.21.2 General test conditions . 46
142 7.21.3 Test conditions – current test . 46
143 7.21.4 Test conditions – voltage test, terminations/case . 47
144 7.21.5 Test conditions – voltage test between terminations . 47
145 7.21.6 Test conditions – combined voltage/current tests . 48
146 7.21.7 Final inspection, measurements and requirements . 48
147 7.22 Passive flammability . 48
148 7.22.1 General . 48
149 7.22.2 Test method . 48
150 7.23 Active flammability . 49
151 7.24 Solvent resistance of the marking . 49
152 7.24.1 General . 49
153 7.24.2 Test description . 49
154 7.24.3 Requirements after test . 49
155 8 Optional tests (for performance only) . 50
156 8.1 Solderability . 50
157 8.1.1 General . 50
158 8.1.2 Test method . 50
159 8.1.3 Test conditions . 50
160 8.1.4 Requirements . 50
161 8.1.5 Final measurements and requirements . 50
162 8.2 Rapid change of temperature . 50
163 8.2.1 Pre-measurements . 50
164 8.2.2 Test method . 51
165 8.2.3 Final inspection . 51
166 8.3 Vibration . 51
167 8.3.1 Pre-measurements . 51
168 8.3.2 Test method . 51
169 8.3.3 Test conditions . 51
170 8.3.4 Intermediate inspection . 51
171 8.3.5 Final Inspection . 51
172 8.4 Shock . 51
173 8.4.1 Pre measurements . 51
174 8.4.2 Test method . 51
175 8.4.3 Test conditions . 52
176 8.4.4 Final Inspection . 52
177 8.5 Container sealing . 52
178 8.5.1 General . 52
179 8.5.2 Test conditions . 52
180 8.5.3 Requirements . 52
181 8.6 Charge and discharge . 52
182 8.6.1 General . 52
183 8.6.2 Test circuits and wave forms . 52
184 8.6.3 Information given in detail specification . 54
185 8.6.4 Initial measurements . 54
186 8.6.5 Test conditions . 54

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187 8.6.6 Final measurements and requirements . 54
188 8.7 Component solvent resistance . 55
189 8.7.1 General . 55
190 8.7.2 Initial measurements . 55
191 8.7.3 Test description . 55
192 8.7.4 Final measurements . 55
193 Annex A (informative) Calculation of leakage current . 56
194 A.1 General . 56
195 A.2 Calculation of leakage current for 1-line filters . 56
196 A.3 Calculation of leakage current for 2-line filters . 56
197 A.4 Calculation of leakage current for 3-line filters . 57
198 A.5 Calculation of leakage current for 4-line filters . 59
199 Annex B (normative) Sampling plan for safety requirements only . 60
200 Annex C (normative) Test schedule for safety requirements only. 62
201 Annex D (normative) Circuit for the impulse voltage test . 65
202 Annex E (normative) Circuit for the endurance test. 67
203 Annex F (normative) Declaration of design . 68
204 Annex G (informative) Safety and performance tests qualification approval – Assessment
205 level DZ . 69
206 Annex X (informative) Cross reference for references to the previous edition of this document
207 . 71
208 Bibliography . 74
209
210 Figure 1 – Asymmetrical, symmetrical and unsymmetrical test circuit . 14
211 Figure 2 – Examples for the application of Tests A and B of Table 7 . 31
212 Figure 3 – Examples for the application of Test C of Table 7 . 32
213 Figure 4 – Impulse wave form . 46
214 Figure 5 – Relay circuit . 52
215 Figure 6 – Thyristor circuit . 53
216 Figure 7 – Voltage and current waveforms . 53
217 Figure A.1 – Leakage current for 1-line f
...