Fixed capacitors for use in electronic equipment -- Part 14: Sectional specification - Fixed capacitors for electromagnetic interference suppression and connection to the supply mains

This part of IEC 60384 applies to capacitors and resistor-capacitor combinations which will be connected to an a.c. mains or other supply with nominal voltage not exceeding 1 000 V a.c. (r.m.s.) or 1 000 V d.c. and with a nominal frequency not exceeding 100 Hz. The principal object of this standard is to prescribe preferred ratings and characteristics and to select from IEC 60384-1, the appropriate quality assessment procedures, tests and measuring methods and to give general performance requirements for this type of capacitor. Test severities and requirements prescribed in detail specifications referring to this sectional specification shall be of equal or higher performance level, lower performance levels not being permitted. A further object of this standard is to provide a schedule of safety tests to be used by national testing stations in countries where approval by such stations is required.

Festkondensatoren zur Verwendung in Geräten der Elektronik -- Teil 14: Rahmenspezifikation - Festkondensatoren zur Unterdrückung elektromagnetischer Störungen, geeignet für Netzbetrieb

Condensateurs fixes utilisés dans les équipements électroniques -- Partie 14: Spécification intermédiaire - Condensateurs fixes d'antiparasitage et raccordement à l'alimentation

applies to capacitors and resistor-capacitor combinations which will be connected to an a.c. mains or other supply with nominal voltage not exceeding 1 000 V a.c. (r.m.s.) or 1 000 V d.c. and with a nominal frequency not exceeding 100 Hz.

Pritrjeni kondenzatorji za uporabo v elektronskih napravah – 14. del: Področna specifikacija – Pritrjeni kondenzatorji za dušenje elektromagnetnega motenja in za povezovanje z omrežnim napajanjem (IEC 60384-14:2005)

General Information

Status
Withdrawn
Publication Date
28-Feb-2006
Withdrawal Date
15-Aug-2016
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
04-Aug-2016
Due Date
27-Aug-2016
Completion Date
16-Aug-2016

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SLOVENSKI SIST EN 60384-14:2006
STANDARD
marec 2006
Pritrjeni kondenzatorji za uporabo v elektronskih napravah – 14. del:
Področna specifikacija – Pritrjeni kondenzatorji za dušenje
elektromagnetnega motenja in za povezovanje z omrežnim napajanjem (IEC
60384-14:2005)

Fixed capacitors for use in electronic equipment – Part 14: Sectional specification –

Fixed capacitors for electromagnetic interference suppression and connection to
the supply mains (IEC 60384-14:2005)
ICS 31.060.10 Referenčna številka
SIST EN 60384-14:2006(en)

© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------
INTERNATIONAL IEC
STANDARD 60384-14
QC 302400
Third edition
2005-07
Fixed capacitors for use in
electronic equipment –
Part 14:
Sectional specification:
Fixed capacitors for electromagnetic
interference suppression and connection
to the supply mains
 IEC 2005  Copyright - all rights reserved

No part of this publication may be reproduced or utilized in any form or by any means, electronic or

mechanical, including photocopying and microfilm, without permission in writing from the publisher.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue
---------------------- Page: 2 ----------------------
– 2 – 60384-14  IEC:2005(E)
CONTENTS
FOREWORD ………………………………………………………………………………………………..3

1 General ..........................................................................................................................7

1.1 Scope....................................................................................................................7

1.2 Object ...................................................................................................................7

1.3 Normative references ............................................................................................7

1.4 Information to be given in a detail specification ......................................................8

1.5 Terms and definitions ............................................................................................9

1.6 Marking ...............................................................................................................15

2 Preferred ratings and characteristics.............................................................................16

2.1 Preferred characteristics......................................................................................16

2.2 Preferred values of ratings...................................................................................16

3 Assessment procedures................................................................................................17

3.1 Primary stage of manufacture ..............................................................................17

3.2 Structurally similar components ...........................................................................17

3.3 Certified records of released lots..........................................................................17

3.4 Approval testing...................................................................................................17

3.5 Quality conformance Inspection ...........................................................................27

4 Test and measurement procedures ...............................................................................30

4.1 Visual examination and check of dimensions ........................................................30

4.2 Electrical tests.....................................................................................................30

4.3 Robustness of terminations..................................................................................33

4.4 Resistance to soldering heat................................................................................34

4.5 Solderability ........................................................................................................34

4.6 Rapid change of temperature ...............................................................................34

4.7 Vibration..............................................................................................................35

4.8 Bump ..................................................................................................................35

4.9 Shock..................................................................................................................36

4.10 Container sealing ................................................................................................36

4.11 Climatic sequence ...............................................................................................36

4.12 Damp heat, steady state ......................................................................................38

4.13 Impulse voltage ...................................................................................................38

4.14 Endurance...........................................................................................................40

4.15 Charge and discharge..........................................................................................42

4.16 Radiofrequency characteristics ............................................................................43

4.17 Passive flammability test .....................................................................................43

4.18 Active flammability test ........................................................................................44

4.19 Component solvent resistance (if applicable)........................................................46

4.20 Solvent resistance of the marking ........................................................................46

Annex A (normative) Circuit for the impulse voltage test .....................................................47

Annex B (normative) Circuit for the endurance test .............................................................48

Annex C (normative) Circuit for the charge and discharge test ............................................49

---------------------- Page: 3 ----------------------
60384-14  IEC:2005(E) – 3 –

Annex D (normative) Declaration of design (confidential to the manufacturer and the

certification body) ...............................................................................................................50

Annex E (informative) Pulse test circuits ...........................................................................51

Annex F (normative) Particular requirements for safety test of surface mounting

capacitors...........................................................................................................................53

Annex G (informative) Capacitance ageing of fixed capacitors of ceramic dielectric,

Class 2...............................................................................................................................56

---------------------- Page: 4 ----------------------
– 4 – 60384-14  IEC:2005(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –
Part 14: Sectional specification:
Fixed capacitors for electromagnetic interference suppression
and connection to the supply mains
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 co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

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 60384-14 has been prepared by IEC technical committee 40:

Capacitors and resistors for electronic equipment.

This third edition cancels and replaces the second edition published in 1993 and amendment 1

(1995). It constitutes a technical revision. All changes that have been agreed upon can be

categorized as minor revisions.
The text of this standard is based on the following documents:
FDIS Report on voting
40/1552/FDIS 40/1586/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.
---------------------- Page: 5 ----------------------
60384-14  IEC:2005(E) – 5 –

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

IEC 60384 consists of the following parts, under the general title Fixed capacitors for use in

electronic equipment:
Part 1: Generic specification

Part 2: Sectional specification: Fixed metallized polyethylene-terephthalate film dielectric

d.c. capacitors
Part 3: Sectional specification: Fixed tantalum chip capacitors

Part 4: Sectional specification: Aluminium electrolytic capacitors with solid and non-solid

electrolyte

Part 5: Sectional specification: Fixed mica dielectric d.c. capacitors with a rated voltage

not exceeding 3 000 V - Selection of methods of test and general requirements

Part 6: Sectional specification: Fixed metallized polycarbonate film dielectric d.c.

capacitors

Part 7: Sectional specification: Fixed polystyrene film dielectric metal foil d.c. capacitors

Part 8: Sectional specification: Fixed capacitors of ceramic dielectric, Class 1

Part 9: Sectional specification: Fixed capacitors of ceramic dielectric, Class 2

Part 11: Blank detail specification: Fixed polyethylene-terephthalate film dielectric metal

foil d.c. capacitors – Assessment level E

Part 12: Sectional specification: Fixed polycarbonate film dielectric metal foil d.c.

capacitors

Part 13: Sectional specification: Fixed polypropylene film dielectric metal foil d.c.

capacitors

Part 14: Sectional specification: Fixed capacitors for electromagnetic interference

suppression and connection to the supply mains

Part 15: Sectional specification: Fixed tantalum capacitors with non-solid or solid

electrolyte

Part 16: Sectional specification: Fixed metallized polypropylene film dielectric d.c.

capacitors

Part 17: Sectional specification: Fixed metallized polypropylene film dielectric a.c. and

pulse capacitors

Part 18: Sectional specification: Fixed aluminium electrolytic chip capacitors with solid and

non-solid electrolyte

Part 19: Sectional specification: Fixed metallized polyethylene-terephthalate film dielectric

chip d.c. capacitors

Part 20: Sectional specification: Fixed metallized polyphenylene sulfide film dielectric chip

d.c. capacitors

Part 21: Sectional specification: Fixed surface mount multilayer capacitors of ceramic

dielectric, Class 1

Part 22: Sectional specification: Fixed surface mount multilayer capacitors of ceramic

dielectric, Class 2
---------------------- Page: 6 ----------------------
– 6 – 60384-14  IEC:2005(E)

The QC number that appears on the front cover of this publication is the specification number in the

IEC Quality Assessment System for Electronic Components (IECQ).

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result 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.
A bilingual version of this standard may be issued at a later date.
---------------------- Page: 7 ----------------------
60384-14  IEC:2005(E) – 7 –
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –
Part 14: Sectional specification:
Fixed capacitors for electromagnetic interference suppression
and connection to the supply mains
1 General
1.1 Scope

This part of IEC 60384 applies to capacitors and resistor-capacitor combinations which will be

connected to an a.c. mains or other supply with nominal voltage not exceeding 1 000 V a.c.

(r.m.s.) or 1 000 V d.c. and with a nominal frequency not exceeding 100 Hz.
1.2 Object

The principal object of this standard is to prescribe preferred ratings and characteristics and

to select from IEC 60384-1, the appropriate quality assessment procedures, tests and

measuring methods and to give general performance requirements for this type of capacitor.

Test severities and requirements prescribed in detail specifications referring to this sectional

specification shall be of equal or higher performance level, lower performance levels not

being permitted.

A further object of this standard is to provide a schedule of safety tests to be used by national

testing stations in countries where approval by such stations is required.
1.3 Normative references

The following referenced documents are indispensable for the application of this document.

For dated references, only the edition cited applies. For undated references, the latest edition

of the referenced document (including any amendments) applies.

IEC 60060-1, High-voltage test techniques – Part 1: General definitions and test requirements

IEC 60063, Preferred number series for resistors and capacitors
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60068-2-17, Environmental testing – Part 2: Tests – Test Q: Sealing

IEC 60335-1, Household and similar electrical appliances – Safety – Part 1: General

requirements

IEC 60384-1, Fixed capacitors for use in electronic equipment – Part 1: Generic specification

IEC 60384-14-4, Fixed capacitors for use in electronic equipment – Part 14: Blank detail

specification: Fixed capacitors for electromagnetic interference supply and connection to the

supply mains – Assessment level D

IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:

Principles, requirements and tests
IEC 60760, Flat, quick-connect terminations
---------------------- Page: 8 ----------------------
– 8 – 60384-14  IEC:2005(E)

IEC 60940, Guidance information on the application of capacitors, resistors, inductors and

complete filter units for radio interference suppression

IEC 61140, Protection against electric shock – Common aspects for installation and

equipment

CISPR 17, Methods of measurement of the suppression characteristics of passive radio

interference filters and suppression components
IEC QC 001005, IEC Quality Assessment System for Electronic Components (IECQ) –

Register of Firms, Products and Services approved under the IECQ System, including

ISO 9000
ISO 7000-DB , Graphical symbols for use on equipment – Index and synopsis
1.4 Information to be given in a detail specification

Detail specifications shall be derived from the relevant blank detail specification.

Detail specifications shall not specify requirements inferior to those of the generic, sectional

or blank detail specification. When more severe requirements are included, they shall be

listed in 1.9 of the detail specification, and indicated in the test schedules, for example, by an

asterisk.

The following information shall be given in each detail specification and the values quoted

shall preferably be selected from the appropriate clause of this sectional specification.

NOTE The information given in 1.4.1 may for convenience be presented in tabular form.

1.4.1 Outline drawing and dimensions

There shall be an illustration of the capacitor as an aid to easy recognition and for comparison

of the capacitor with others. Dimensions and their associated tolerances, which affect

interchangeability and mounting, shall be given in the detail specification. All dimensions shall

preferably be stated in millimetres; however, when the original dimensions are given in

inches, the converted metric dimensions in millimetres shall be added.

Normally, the numerical values shall be given for the length, width and height of the body and

the wire spacing, or for cylindrical types, the body diameter and the length and diameter of

the terminations. When necessary, for example when a number of capacitance values/voltage

ranges are covered by a detail specification, their dimensions and their associated tolerances

shall be placed in a table below the drawing.

When the configuration is other than that described above, the detail specification shall state

such dimensional information as will adequately describe the capacitor. When the capacitor is

not designed for use on printed boards, this shall be clearly stated in the detail specification.

1.4.2 Mounting

The detail specification shall specify the method of mounting to be applied for normal use and

for the application of the vibration, bump or shock tests. The capacitors shall be mounted by

their normal means. The design of the capacitor may be such that special mounting fixtures

are required in its use. In this case, the detail specification shall describe the mounting

fixtures and they shall be used in the application of the vibration, bump or shock tests.

___________
DB refers to the ISO on-line database.
---------------------- Page: 9 ----------------------
60384-14  IEC:2005(E) – 9 –

NOTE If recommendations for mounting for "normal" use are made, they should be included in the detail

specification under "1.8 Additional information (Not for inspection purposes)". If recommendations are included, a

warning can be given that the full vibration, bump and shock performance may not be available if mounting

methods other than those specified in 1.1 of the detail specification are used.
1.4.3 Ratings and characteristics

The ratings and characteristics shall be in accordance with the relevant clauses of this

specification, together with the following.
1.4.3.1 Rated capacitance range
See 2.2.1.

NOTE When products approved to the detail specification have different ranges, the following statement should

be added: "The range of values available in each voltage range is given in IEC QC 001005."

1.4.3.2 Rated resistance range (if applicable)
See 2.2.4.
1.4.3.3 Particular characteristics

Additional characteristics may be listed, when they are considered necessary to specify the

component adequately for design and application purposes.
1.4.4 Marking

The detail specification shall specify the content of the marking on the capacitor and on the

package. See also 1.6 of this specification.
1.5 Terms and definitions

For the purposes of this document, the terms and definitions of IEC 60384-1, as well as the

following, apply.

NOTE Some definitions of IEC 60384-1 have been expanded, and this is indicated by reference to this note.

1.5.1
a.c. capacitor

capacitor designed essentially for application with a power-frequency alternating voltage

NOTE AC capacitors may be used on d.c. supplies having the same voltage as the a.c. r.m.s. rated voltage of the

capacitor.
1.5.2

electromagnetic interference suppression capacitor (radio interference suppression

capacitor)

capacitor used for the reduction of electromagnetic interference caused by electrical or

electronic apparatus, or other sources
1.5.3
capacitor or RC unit of Class X

capacitor or RC unit of a type suitable for use in situations where failure of the capacitor or

RC unit would not lead to danger of electrical shock but could result in a risk of fire

Class X capacitors are divided into three subclasses (see Table 1) according to the peak

voltage of the impulses superimposed on the mains voltage to which they may be subjected in

service. Such impulses may arise from lightning strikes on outside lines, from switching in

neighbouring equipment, or switching in the equipment in which the capacitor is used.

---------------------- Page: 10 ----------------------
– 10 – 60384-14  IEC:2005(E)
Table 1 – Classification of Class X capacitors
Subclass Peak impulse IEC 60664-1 Application Peak impulse voltage
voltage in installation
U applied before
service category
endurance test
X1 > 2,5 kV III High pulse
When C ≤ 1,0 µF
application
≤ 4,0 kV U = 4 kV
When C > 1,0 µF
U = kV
10 F
X2 II General purpose
≤ 2,5 kV When C ≤ 1,0 µF
U = 2,5 kV
When C > 1,0 µF
2,5
U = kV
10 F
X3 - General purpose None
≤ 1,2 kV

NOTE The factor used for the reduction of U for capacitance values above 1,0 µF maintains ½ × C U

P R P
constant for these capacitance values; C is in F.
1.5.4
capacitor or RC unit of Class Y

capacitor or RC unit of a type suitable for use in situations where failure of the capacitor could

lead to danger of electric shock

Class Y capacitors are further divided into four subclasses, Y1, Y2, Y3 and Y4, as shown in

Table 2.
Table 2 – Classification of Class Y capacitors
Subclass Type of insulation bridged Range of rated Peak impulse voltage
voltages before endurance test
Y1 Double insulation or reinforced 8,0 kV
≤ 500 V
insulation
Y2 Basic insulation or supplementary 5,0 kV
≥ 150 V
insulation
≤ 300 V
Y3 Basic insulation or supplementary None
≥ 150 V
insulation
≤ 250 V
Y4 Basic insulation or supplementary < 150 V 2,5 kV
insulation

NOTE 1 For definitions of basic, supplementary, double and reinforced insulation, see IEC 61140.

NOTE 2 Y2 capacitors may be substituted by Y1 capacitors of the same or higher U .

The enclosure of a Y1-capacitor shall not contain other components. Assemblies may be

constructed from Y-capacitors and X-capacitors provided these capacitors fulfil the

requirements for the relevant X and Y subclasses.

One Y-capacitor may bridge basic insulation. One Y-capacitor may bridge supplementary

insulation. If combined basic and supplementary insulations are bridged by two Y2-, Y3- or

Y4-capacitors in series, they shall have the same nominal value.

NOTE If insulated terminals are requested, the preferable colours should be transparent or white.

---------------------- Page: 11 ----------------------
60384-14  IEC:2005(E) – 11 –
1.5.5
two-terminal capacitor

electromagnetic interference suppression capacitor having two terminals (see Figure 1)

IEC 925/05
Figure 1 – Two-terminal capacitor
1.5.6
series RC unit

functional combination of a resistor in series with a capacitor of Class X or Y (see Figure 2)

IEC 926/05
Figure 2 – RC unit

NOTE In this standard, where the word "capacitor" appears, the words "capacitor or RC unit" should be

understood where the context permits.
1.5.7
lead-through capacitor (coaxial)

capacitor with a central current-carrying conductor surrounded by a capacitor element which

is symmetrically bonded to the central conductor and to the outer casing to form a coaxial

construction.
It should be mounted coaxially (see Figure 3)
CentCentrraall c conduonduccttoror
ccaarryirrying sng supplupply y ccuurrerrentnt
Earthed circular
mounting flange
IEC 927/05
Figure 3 – Lead-through capacitor (coaxial)
---------------------- Page: 12 ----------------------
– 12 – 60384-14  IEC:2005(E)
1.5.8
lead-through capacitor (non-coaxial)

capacitor in which the supply currents flow through or across the electrodes (see Figures 4a,

4b, 4c and 4d)
IEC 928/05
Figure 4a – Lead-through capacitor for symmetrical use (non-coaxial)
Earthed metal case IEC 929/05
Figure 4b – Lead-through capacitor for asymmetrical use (non-coaxial)
Earthed metal case
IEC 930/05
Figure 4c – Multiple unit lead-through capacitor (non-coaxial)
for symmetrical and asymmetrical use
IEC 931/05
Figure 4d – Multiple unit lead-through capacitor
Figure 4 – Lead-through capacitors
---------------------- Page: 13 ----------------------
60384-14  IEC:2005(E) – 13 –
1.5.9
by-pass capacitor

capacitor where radiofrequency interference currents are by-passed. There are three common

forms: single, delta and T-connected. The single capacitor consists of a capacitor in a metal

case with one termination connected to the case as in Figure 5a; the delta form consists of an

X-capacitor and two Y2- or Y3-capacitors arranged in a delta network as in Figure 5b; the T-

connected form consists of three capacitors C , C and C connected in T as shown in Figure

A B C
5c.

The delta and T-connected forms are electrically equivalent (star-delta transformation). In the

T-connected form the X-capacitor is the result of the series connection of C – C and the

B C
Y-capacitors are the results of the series connections of C – C and C – C .
A B A C

When T-connected capacitors are submitted to tests, and it is stated that voltages shall be

applied across the X-capacitors, such voltages shall be applied between the line and neutral

terminations. Similarly, when it is stated that voltages shall be applied across the Y-

capacitors, such voltages shall be applied between the line and neutral terminations

connected together and the earth termination.
IEC 932/05
Figure 5a – Single by-pass capacitor
IEC 933/05
Figure 5b – Delta by-pass capacitor
IEC 934/05
Figure 5c – Example of a T-connected by-pass capacitor

NOTE For capacitors with non-metallic housings, the earth connection is brought out as a separate termination.

Figure 5 – By-pass capacitors
---------------------- Page: 14 ----------------------
– 14 – 60384-14  IEC:2005(E)
1.5.10
rated voltage

either the r.m.s. operating voltage of rated frequency, or the d.c. operating voltage, which may

be applied continuously to the terminations of a capacitor at any temperature between the

lower and the upper category temperatures.

This implies, for capacitors covered by this specification, that the category voltage is the

same as the rated voltage
1.5.11
rated power (of a series RC unit)

maximum power which can be dissipated by the RC unit at the rated temperature during

continuous operation
1.5.12
upper category temperature
maximum surface temperature for which the capacitor has been designed to operate
continuously (see note to 1.5)

NOTE 1 For lead-through capacitors and series RC units, the external surface temperature can be affected by

internal heating due to the lead-through current. The terminations of a capacitor are considered to be part of the

external surface.

NOTE 2 This definition replaces that given in IEC 60384-1, 2.2.14, because suppression capacitors in accordance

with this specification are intended to be connected to the mains network and may have internal heat generation as

a result.
1.5.13
lower category temperature
minimum surface temperature for which the capacitor has been designed to operate
continuously (see note to 1.5)

NOTE This definition replaces that given in IEC 60384-1, 2.2.13 (see note 2 to 1.5.12 above).

1.5.14
rated temperature (of a lead-through capacitor
...

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