oSIST prEN IEC 62146-1:2025

Capacitors for high-voltage alternating current circuit-breakers - Part 1: General and grading capacitors

Condensateurs pour disjoncteurs à courant alternatif haute tension - Partie 1: Généralités et condensateurs de répartition

Kondenzatorji za izravnavo potenciala pri visokonapetostnih odklopnikih za izmenični tok - 1. del: Splošni in zaščitni kondenzatorji

General Information

• Status: Not Published
• Public Enquiry End Date: 24-Jul-2025
• ICS: 31.060.01 - Capacitors in general
• ICS: 31.060.70 - Power capacitors
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 07-May-2025
• Due Date: 24-Sep-2025
• Ref Project: prEN IEC 62146-1:2025 - Capacitors for high-voltage alternating current circuit-breakers - Part 1: General and grading capacitors

Relations

• Revises: SIST EN 62146-1:2014 - Grading capacitors for high-voltage alternating current circuit-breakers - Part 1: General
• Effective Date: 24-Jan-2023
• Revises: SIST EN 62146-1:2014/A1:2016 - Grading capacitors for high-voltage alternating current circuit-breakers - Part 1: General (IEC 62146-1:2013/A1:2016)
• Effective Date: 24-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2025
Kondenzatorji za izravnavo potenciala pri visokonapetostnih odklopnikih za
izmenični tok - 1. del: Splošni in zaščitni kondenzatorji
Capacitors for high-voltage alternating current circuit-breakers - Part 1: General and
grading capacitors
Condensateurs pour disjoncteurs à courant alternatif haute tension - Partie 1:
Généralités et condensateurs de répartition
Ta slovenski standard je istoveten z: prEN IEC 62146-1:2025
ICS:
31.060.70 Močnostni kondenzatorji Power capacitors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

33/720/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62146-1 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-05-02 2025-07-25
SUPERSEDES DOCUMENTS:
33/712/CD, 33/717A/CC
IEC TC 33 : POWER CAPACITORS AND THEIR APPLICATIONS
SECRETARIAT: SECRETARY:
Italy Mr Stefano Zunino
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
SC 17A
ASPECTS CONCERNED:
Environment,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.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Capacitors for high-voltage alternating current circuit-breakers - Part 1: General and grading
capacitors
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.

2 IEC CDV 62146-1 ED2 © IEC 2025
1 CONTENTS
2 CONTENTS . 2
3 FOREWORD . 5
4 1 Scope . 7
5 2 Normative references . 7
6 3 Terms and definitions . 8
7 4 Abbreviations . 13
8 5 Service conditions . 14
9 5.1 General . 14
10 5.2 Normal service conditions . 14
11 5.2.1 Ambient temperature . 14
12 5.2.2 Altitude . 15
13 5.2.3 Mechanical stress and vibrations . 15
14 5.2.4 Additional service conditions for indoor and completely immersed
15 capacitor . 15
16 5.3 Special service conditions . 15
17 5.3.1 General . 15
18 5.3.2 Altitude correction. 15
19 5.3.3 Earthquakes . 16
20 6 Ratings . 16
21 6.1 Rated voltage (U ) . 16
cr
22 6.2 Rated insulation level . 17
23 6.3 Rated frequency (f ) . 18
r
24 7 Design and construction . 18
25 7.1 Capacitance tolerances . 18
26 7.2 Capacitor loss requirements. 18
27 7.3 Partial discharge level . 18
28 7.4 Angle of mounting . 18
29 7.5 Minimum withstand value of mechanical bending load . 19
30 7.5.1 Capacitors mounted on air insulated circuit-breaker . 19
31 7.5.2 Immersed capacitors . 19
32 7.6 Insulation fluids . 19
33 7.6.1 Liquid insulation . 19
34 7.6.2 Gas insulation . 20
35 7.7 Protection against corrosion . 20
36 7.8 Marking of the equipment . 20
37 7.9 Creepage distances for outdoor capacitors . 21
38 8 Type tests . 21
39 8.1 Information for identification of specimens . 21
40 8.2 Information to be included in type-test reports. 22
41 8.3 Test conditions . 22
42 8.4 Dielectric type tests . 22
43 8.4.1 General . 22
44 8.4.2 Switching impulse voltage test . 23
45 8.4.3 Lightning and chopped lightning impulse voltage tests . 24
46 8.5 Voltage test at low and high temperature . 24

IEC CDV 62146-1 ED2 © IEC 2025 3
47 8.5.1 Test procedure . 24
48 8.5.2 Capacitor reduced-scale model design . 25
49 8.6 Radio interference voltage (RIV) test . 25
50 8.7 Power frequency withstand voltage test . 25
51 8.8 Short-circuit discharge test . 26
52 8.9 Resonance frequency measurements . 26
53 8.10 Mechanical bending test . 26
54 8.11 Tightness test at different temperatures . 26
55 8.12 Tightness test to check gas ingress from a pressurised environment . 27
56 8.13 Vibration test . 27
57 9 Routine tests . 28
58 9.1 General . 28
59 9.2 Test conditions . 29
60 9.3 Capacitance and tan δ (loss angle) measurement at power frequency . 29
61 9.4 Power frequency withstand voltage test . 30
62 9.5 Partial discharge test . 30
63 9.6 Tightness test . 30
64 9.6.1 General . 30
65 9.6.2 Oil impregnated capacitor . 30
66 9.6.3 Tightness test for gas filled capacitors . 31
67 9.6.3.1Air insulated capacitors . 31
68 9.6.3.2Immersed capacitors . 31
69 9.7 Visual inspection and dimensional check . 32
70 10 Design test . 32
71 10.1 Aging test . 32
72 10.1.1 Test procedure . 32
73 10.1.2 Acceptance criteria . 33
74 11 Recommendations for transport, storage, erection, operation and maintenance . 33
75 11.1 General . 33
76 11.2 Conditions during transport, storage and installation . 33
77 11.3 Installation . 34
78 11.4 Unpacking and lifting . 34
79 11.5 Assembly . 34
80 11.5.1 Mounting . 34
81 11.5.2 Connections to metal parts . 34
82 11.5.3 Final installation inspection . 34
83 11.6 Operation . 34
84 11.7 Maintenance . 34
85 11.7.1 General . 34
86 11.7.2 Recommendation for the installation and maintenance . 35
87 12 Safety . 35
88 12.1 General . 35
89 12.2 Precautions by manufacturers . 35
90 12.3 Precautions by users . 35
91 12.4 National regulations . 35
92 13 Environmental aspects . 35
93 Annex A (informative) Corrosion: Information regarding service conditions and
94 recommended test requirements . 37

4 IEC CDV 62146-1 ED2 © IEC 2025
95 A.1 General . 37
96 A.2 Recommended test requirements . 37
97 Annex B (informative) Resonance frequency measurements . 38
...