prEN IEC 60358-1:2025

Coupling capacitors and capacitor dividers - Part 1: General rules

Kopplungskondensatoren und kapazitive Teiler - Teil 1: Allgemeine Bestimmungen

Condensateurs de couplage et diviseurs capacitifs - Partie 1: Règles générales

Sklopni kondenzatorji in kondenzatorski delilniki - 1. del: Splošna pravila

General Information

• Status: Not Published
• Publication Date: 31-Aug-2026
• ICS: 29.120.99 - Other electrical accessories
• ICS: 29.240.99 - Other equipment related to power transmission and distribution networks
• ICS: 31.060.70 - Power capacitors
• Technical Committee: CLC/SR 33 - Power capacitors
• Drafting Committee: IEC/TC 33 - IEC_TC_33
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 07-Feb-2025
• Due Date: 07-Feb-2025
• Completion Date: 07-Feb-2025
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: oSIST prEN IEC 60358-1:2025 - Coupling capacitors and capacitor dividers - Part 1: General rules

Relations

• Revised: EN ISO/IEC 17000:2004 - Conformity assessment - Vocabulary and general principles (ISO/IEC 17000:2004)
• Effective Date: 11-Oct-2022
• Revises: EN 60358-1:2012/AC:2013 - Coupling capacitors and capacitor dividers - Part 1: General rules
• Effective Date: 11-Oct-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2025
Sklopni kondenzatorji in kondenzatorski delilniki - 1. del: Splošna pravila
Coupling capacitors and capacitor dividers - Part 1: General rules
Kopplungskondensatoren und kapazitive Teiler - Teil 1: Allgemeine Bestimmungen
Condensateurs de couplage et diviseurs capacitifs - Partie 1: Règles générales
Ta slovenski standard je istoveten z: prEN IEC 60358-1:2025
ICS:
31.060.70 Močnostni kondenzatorji Power capacitors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

33/718/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60358-1 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-02-07 2025-05-02
SUPERSEDES DOCUMENTS:
33/711/CD, 33/714A/CC
IEC TC 33 : POWER CAPACITORS AND THEIR APPLICATIONS
SECRETARIAT: SECRETARY:
Italy Mr Stefano Zunino
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
clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Coupling capacitors and capacitor dividers - Part 1: General rules

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 permis sion
in writing from IEC.
33/718/CDV 2 IEC 60358-1 ED2 © IEC 2024
1 CONTENTS
2 FOREWORD . 6
3 INTRODUCTION . 8
4 1 Scope . 10
5 2 Normative references . 10
6 3 Terms, definitions, symbols and abbreviated terms . 11
7 General . 12
8 Coupling capacitor and capacitor divider specifics . 15
9 4 Normal and special environmental conditions . 16
10 General . 16
11 Normal service conditions . 17
12 Ambient air temperature . 17
13 Altitude . 17
14 Vibrations or earthquakes . 17
15 Other service conditions for indoor equipment . 17
16 Other service conditions for outdoor equipment . 17
17 Special service conditions . 18
18 General . 18
19 Altitude . 18
20 Ambient temperature . 19
21 Earthquakes . 19
22 System earthing . 19
23 5 Ratings . 20
24 Standard values of rated frequency . 20
25 Standard values of rated voltages . 20
26 Rated voltage U for AC . 20
r
27 Rated voltage U for DC . 20
r
28 Standard values of rated voltage factor . 21
29 Standard values of rated voltage factor for AC voltages . 21
30 Standard values of rated voltage factor for DC voltages . 21
31 6 Design requirements . 21
32 Insulation requirements . 21
33 Other insulation requirements . 23
34 Low voltage terminal not exposed to weather . 23
35 Low voltage terminal exposed to weather . 24
36 Partial discharges . 24
37 Chopped lightning impulse test . 24
38 Capacitance at power frequency . 24
39 Losses of the capacitor at power frequency . 25
40 External insulation requirements . 25
41 Electromagnetic emission requirements – Radio interference voltage (RIV) . 26
42 Mechanical requirements . 26
43 Tightness of equipment . 27
44 General . 27
45 Liquid tightness . 27
46 Gas tightness . 27

IEC 60358-1 ED2 © IEC 2024 3 33/718/CDV
47 Voltage grading for DC capacitors . 29
48 Requirements for temperature rise . 29
49 Capacitor element ageing requirements . 29
50 General . 29
51 Capacitor element design criteria . 30
52 Marking of the equipment . 30
53 General . 30
54 Markings of the rating plate . 31
55 7 Tests . 31
56 General . 31
57 Classification of tests . 32
58 General . 32
59 Routine tests . 33
60 Type tests . 33
61 Special tests . 34
62 Design tests . 34
63 Routine tests . 36
64 General . 36
65 Tightness of equipment . 37
66 Capacitance and tan measurement at power-frequency . 37
67 Power-frequency or DC withstand test . 38
68 Partial discharge measurement . 39
69 AC-withstand test on low-voltage terminal of the equipment . 40
70 Resistance measurement for DC equipment . 40
71 Verification of markings . 40
72 Gas dew point measurement . 40
73 Type tests . 41
74 General . 41
75 Impulse tests . 41
76 Wet test for outdoor equipment . 42
77 Radio interference voltage test . 44
78 Polarity reversal test for DC equipment . 44
79 Temperature rise test . 45
80 Enclosure tightness test at ambient temperature . 47
81 Mechanical tests . 47
82 Special tests . 48
83 Determination of the temperature coefficient of capacitance TC . 48
84 Enclosure tightness test at low and high temperatures . 49
85 Internal arc test . 50
86 Multiple chopped impulse test on primary terminals . 50
87 Measurement of the impedance depending on frequency . 50
88 Thermal stability test . 50
89 Corrosion test . 51
90 Design tests . 51
91 Ageing test . 51
92 8 Rules for transport, storage, erection, operation and maintenance . 52
93 General . 52
94 Conditions during transport, storage and installation . 52

33/718/CDV 4 IEC 60358-1 ED2 © IEC 2024
95 Installation . 53
96 General . 53
97 Unpacking and lifting . 53
98 Assembly . 53
99 Mounting . 53
100 Connections . 53
101 Final installation inspection and tests . 53
102 Maintenance . 54
103 General . 54
104 Responsibilities for the manufacturer . 54
105 9 Safety . 54
106 10 Influence of products on the natural environ
...