Coupling capacitors and capacitor dividers - Part 4: DC and AC single-phase capacitor dividers

IEC 60358-4:2018 applies to DC or AC single-phase capacitor-dividers connected between line and ground used for manufacturing Voltage Transformers as well as for other applications. IEC 60358-4:2018 is to be used in conjunction with the latest edition of IEC 60358-1 and its amendments. IEC 60358-4:2018 was established on the basis of the IEC 60358-1:2012. IEC 60358-4:2018 supplements or modifies the corresponding clauses in IEC 60358-1:2012. This standard cancels and replaces the second edition of IEC 60358 (1990), and constitutes a technical revision.

Condensateurs de couplage et diviseurs capacitifs - Partie 4: Diviseurs capacitifs monophasés en courant continu et en courant alternatif

IEC 60358-4:2018 s'applique aux diviseurs capacitifs monophasés pour courant alternatif ou pour courant continu connectés entre la ligne et la terre utilisés pour la fabrication de transformateurs de tension ainsi que pour d'autres applications.
IEC 60358-4:2018 doit être utilisées conjointement avec IEC 60358-1:2012. IEC 60358-4:2018 a été établie sur la base de IEC 60358-1:2012. IEC 60358 complètent ou modifient les articles correspondants de l'IEC 60358-1:2012.

General Information

Status
Published
Publication Date
02-Jul-2018
Current Stage
PPUB - Publication issued
Completion Date
03-Jul-2018
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IEC 60358-4
Edition 1.0 2018-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Coupling capacitors and capacitor dividers –
Part 4: DC or AC single-phase capacitor dividers
Condensateurs de couplage et diviseurs capacitifs –
Partie 4: Diviseurs capacitifs monophasés pour courant alternatif ou pour
courant continu
IEC 60358-4:2018-07(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60358-4
Edition 1.0 2018-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Coupling capacitors and capacitor dividers –
Part 4: DC or AC single-phase capacitor dividers
Condensateurs de couplage et diviseurs capacitifs –
Partie 4: Diviseurs capacitifs monophasés pour courant alternatif ou pour
courant continu
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.99; 29.240.99; 31.060.70 ISBN 978-2-8322-5863-7

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60358-4:2018 © IEC 2018
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 6

4 Service conditions ........................................................................................................... 8

5 Ratings ............................................................................................................................ 8

6 Design requirements ........................................................................................................ 8

7 Test conditions .............................................................................................................. 10

8 Classification of tests..................................................................................................... 10

9 Routine tests ................................................................................................................. 10

10 Type tests ..................................................................................................................... 12

11 Special tests .................................................................................................................. 12

12 Marking ......................................................................................................................... 12

Annex 4A (informative) Example of diagram of dividers........................................................ 13

Figure 400 – Connection for voltage test on low voltage part ................................................ 11

Figure 401 – Different types of dividers ................................................................................. 12

Figure 4A.400 – Example of diagram of dividers ................................................................... 13

---------------------- Page: 4 ----------------------
IEC 60358-4:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COUPLING CAPACITORS AND CAPACITOR DIVIDERS –
Part 4: DC or AC single-phase capacitor dividers
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

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

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

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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 60358-4 has been prepared by IEC technical committee 33: Power

capacitors and their applications.
The text of this International Standard is based on the following documents:
FDIS Report on voting
33/616/FDIS 33/617/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

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

A list of all Parts in the IEC 60358 series, published under the general title Coupling

capacitors and capacitor dividers, can be found on the IEC website.
---------------------- Page: 5 ----------------------
– 4 – IEC 60358-4:2018 © IEC 2018

Parts 2 through 4 of IEC 60358 are to be used in conjunction with the latest edition of

IEC 60358-1 and its amendments. They were established on the basis of the first edition

(2012) of that standard.
Parts 2 through 4 of IEC 60358 supplement or modify the corresponding clauses in
IEC 60358-1.

When a particular subclause of Part 1 is not mentioned in Parts 2 through 4, that subclause

applies as far as is reasonable. When this document states “addition”, “modification” or

“replacement”, the relevant text in Part 1 is to be adapted accordingly.

For additional clauses, subclauses, figures, tables or annexes, the following numbering

system is used:

• subclauses, tables and figures which are additional to those in Part 1 are numbered

starting from 200 for Part 2, 300 for Part 3 and 400 for Part 4;

• additional tables or annexes in the remaining Parts are lettered 2A, 2B, 3A, 3B, etc.

• as the notes are integrated into the clauses, their numbering are starting from 1 as usual.

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

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 60358-4:2018 © IEC 2018 – 5 –
INTRODUCTION
This series consists of the following Parts:
IEC 60358-1, Coupling capacitors and capacitor dividers – Part 1: General rules

IEC 60358-2, Coupling capacitors and capacitor dividers – Part 2: AC or DC single-phase

coupling capacitor connected between line and ground for power line carrier-frequency (PLC)

application

IEC 60358-3, Coupling capacitors and capacitor dividers – Part 3: AC or DC coupling

capacitor for harmonic-filters applications

IEC 60358-4, Coupling capacitors and capacitor dividers – Part 4: DC or AC single-phase

capacitor dividers
---------------------- Page: 7 ----------------------
– 6 – IEC 60358-4:2018 © IEC 2018
COUPLING CAPACITORS AND CAPACITOR DIVIDERS –
Part 4: DC or AC single-phase capacitor dividers
1 Scope

This Part 4 of IEC 60358 applies to DC or AC single-phase capacitor-dividers connected

between line and ground used for manufacturing Voltage Transformers as well as for other

applications.

NOTE 1 Diagrams of dividers to which this standard applies are given in Figures 401 and 402 (402.1 and 402.2).

NOTE 2 This standard specifies the basic requirements of the dividers; the requirements of the complete Voltage

Transformers are given in the IEC 61869 series.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements 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 60358-1:2012, Coupling capacitors and capacitor dividers – Part 1: General rules

3 Terms and definitions
Clause 3 of IEC 60358-1:2012 is applicable with the following additional text:
Subclause 3.1.6 is applicable with the following additional Note:
NOTE For DC voltage divider, U include also peak voltage of harmonics.
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.400 Voltage divider definitions
3.400.1
voltage divider

device comprising resistors, inductors, capacitors, transformer(s) or a combination of these

components such that, between two points of the device, a desired fraction of the voltage

applied to the device as a whole can be obtained

Note 1 to entry: In this standard, voltage divider consists on HV-part, internal and/or external LV-part.

[SOURCE: IEC 60050-312:2001, 312-02-32]
---------------------- Page: 8 ----------------------
IEC 60358-4:2018 © IEC 2018 – 7 –
3.400.2
rated primary voltage

value of the primary voltage which appears in the designation of the voltage divider and on

which its performance is based

Note 1 to entry For a divider the performance is everything concerning the measurement behaviour:

transformation ratio, accuracy, burden, input voltage range, etc.

[SOURCE: IEC 60050-321:1986, 321-01-12, modified ("voltage transformer" replaced by

"voltage divider", Note 1 to entry added)]
3.400.3
rated secondary voltage

value of the secondary voltage which appears in the designation of the voltage transformer

and on which its performance is based
[SOURCE: IEC 60050-321:1986, 321-01-16]
3.400.4
capacitor voltage divider
C-Divider
voltage divider consisting only of capacitors
[SOURCE: IEC 60050-321:1986, 321-03-15]
3.400.5
R-C voltage divider
RC-Divider
voltage divider consisting capacitors with parallel connected resistors
3.400.6
C-R voltage divider
CR-divider
voltage divider consisting capacitors with series connected resistors
3.400.7
R-C-R voltage divider
RCR-divider
voltage divider consisting capacitors with series & parallel connected resistors
3.400.8
rated capacitance of divider C
capacitance value for which the divider has been designed
(resultant capacitance: C = C × C /(C + C ))
R 1 2 1 2
Note 1 to entry: C and C are as presented in Figure 401.
1 2
3.400.9
rated parallel resistance of divider R
resistance value for which the RC- & RCR-voltage divider has been designed
(resultant resistance: R = R + R )
PR P1 P2
Note 1 to entry: R and R are as presented in Figure 401.
P1 P2
---------------------- Page: 9 ----------------------
– 8 – IEC 60358-4:2018 © IEC 2018
3.400.10
rated series resistance of divider R
resistance value for which the CR- & RCR-voltage divider has been designed
(resultant resistance: R = R + R )
SR S1 S2
Note 1 to entry: R and R are as presented in Figure 401.
S1 S2
3.400.11
high-voltage capacitor

capacitor connected between the high-voltage terminal and the intermediate voltage terminal

of a capacitor divider
SEE: Figures 402.1 to 402.2.
[SOURCE: IEC 60050-436:1990, 436-02-12]
3.400.12
intermediate voltage capacitor

capacitor connected between the intermediate voltage terminal and the low-voltage terminal

of a capacitor divider
SEE: Figures 402.1 to 402.2.
[SOURCE: IEC 60050-436, 436-02-13]
3.400.13
ratio of a capacitor divider (voltage ratio)

ratio of the rated primary voltage applied to the capacitor divider (U ) to the open-circuit

intermediate voltage

Note 1 to entry: This ratio corresponds to the sum of the capacitances of the high voltage and intermediate

voltage capacitors divided by the capacitance of the high voltage capacitor:
(C + C )/C
1 2 1

Note 2 to entry: C and C include the stray capacitances, which are generally negligible.

1 2

[SOURCE: IEC 60050-436:1990, 436-04-05, modified (addition of "(U )", addition of Notes to

entry)]
4 Service conditions

Clause 4 of IEC 60358-1:2012 is applicable, unless otherwise specified in the specific product

standard.
5 Ratings

Clause 5 of IEC 60358-1:2012 is applicable, unless otherwise specified in the specific product

standard.
6 Design requirements

Clause 6 of IEC 60358-1:2012 is applicable, with the following additions and replacements:

---------------------- Page: 10 ----------------------
IEC 60358-4:2018 © IEC 2018 – 9 –
6.1 Insulation requirements
6.1.400 AC applications

Subclause 6.1 of IEC 60358-1:2012 is applicable, unless otherwise specified in the specific

product standard.
6.1.401 DC applications

Subclause 6.1 of IEC 60358-1:2012 is applicable with the following replacement for DC

withstand voltage test

For DC application, the DC withstand voltage test is defined with a factor F = 1,5. The voltage

shall be applied during one hour in both polarities, unless otherwise specified in the specific

product standard.
DC-test voltage = (F × U ) = 1,5 × U .
T m m
6.2 Other insulation requirements

Subclause 6.2 of IEC 60358-1:2012 is applicable except for the following modifications in

6.2.1 and 6.2.2:
6.2.1 Low voltage terminal not exposed to weather
Replace Subclause 6.2.1 of IEC 60358-1:2012 with the following new subclause:
6.2.1.400 Intermediate voltage terminal and low voltage terminal non exposed to
weather

Intermediate voltage terminal and low voltage terminal shall withstand an AC voltage of 3 kV

against earth terminal, unless otherwise specified in the specific product standard.

If the intermediate voltage is higher than 0,72/√3 kV, the test voltage has to be adapted

according to Table 3 of 60358-1:2012.
6.2.2 Low voltage terminal exposed to weather
Subclause 6.2.2 of IEC 60358-1:2012 is applicable, with the following addition:
6.2.2.400 Intermediate voltage terminal exposed to weather

Intermediate voltage terminal shall withstand the AC voltage test according to Subclause

6.2.2 of IEC 60358-1:2012, unless otherwise specified in the specific product standard.

6.3 Electromagnetic emission requirements – Radio interference voltage (RIV)

Subclause 6.3 of IEC 60358-1:2012 is applicable, with the following modification: Delete

Note 2.

Annex C of IEC 60358-1:2012 is applicable, with the following modification: Delete Note 3.

6.4 Mechanical requirements

Subclause 6.4 of IEC 60358-1:2012 is applicable, unless otherwise specified in the specific

product standards.
---------------------- Page: 11 ----------------------
– 10 – IEC 60358-4:2018 © IEC 2018
7 Test conditions
Clause 7 of IEC 60358-1:2012 is applicable.
8 Classification of tests
8.1 General
Clause 8 of IEC 60358-1:2012 is applicable.
8.2 Routine tests
Subclause 8.2 of IEC 60358-1:2012 is applicable with the following additions:
8.2.400 Routine tests for voltage divider

Subclause 9.2.400.2 gives supplementary information how to perform the power frequency

withstand voltage test on an intermediate terminal.
The following supplementary tests shall be done:
a) Verification of terminal marking (9.2.400.3)
8.3 Type tests
Subclause 8.3 of IEC 60358-1:2012 is applicable.
8.4 Special tests
Subclause 8.4 of IEC 60358-1:2012 is applicable.
9 Routine tests
Clause 9 of IEC 60358-1:2012 is applicable with the following additions:
9.1 Tightness of the liquid-filled equipment
Subclause 9.1 of IEC 60358-1:2012 is applicable.

NOTE Tightness test for gas insulated equipment is specified in Subclause 9.1.2 of IEC 60358-1:2012.

9.2 Electrical tests
Subclause 9.2 of IEC 60358-1:2012 is applicable, with the following additions:
9.2.400 Electrical tests for divider
9.2.400.1 General

The routine tests on the capacitor part are specified in Subclause 8.2 of IEC 60358-1:2012

with the following modifications:
9.2.400.1.1 Capacitance, tanδ and resistance measurement
The HV-capacitance shall be measured as in Subclause 9.2.2 of IEC 60358-1:2012.

The LV-capacitance can be measured with different methods (for ex: RLC bridge, etc.).

---------------------- Page: 12 ----------------------
IEC 60358-4:2018 © IEC 2018 – 11 –
If any resistor component is placed inside:
The HV-resistance shall be measured as in Subclause 9.2.6 of IEC 60358-1:2012.
The LV-resistance can be measured with lower voltages.
9.2.400.1.2 DC withstand test
The test voltages and the duration are defined in Subclause 6.1.401.

Due to temperature reasons, a cooling down period is allowed between both polarities.

This test has to be done before the PD measurement.

NOTE By agreement between purchaser and manufacturer, this test can be replaced by an AC test at DC test

voltage according to Subclause 6.1.401 divided by √2.
9.2.400.2 Routine tests for low voltage device

The low voltage terminal and intermediate voltage terminal may be shorted together and AC

test voltage shall be applied between them and protective earth during one minute as shown

in Figure 400; the voltage level is defined in Subclause 6.1 of IEC 60358-1:2012.

If a voltage limitation device is connected on protective earth, it shall be disconnected during

the test.
Neither breakdown nor flashover shall occur during the test.
Voltage circuit to Possible short-circuit
connect for the test during the voltage test
Figure 400 – Connection for voltage test on low voltage part
9.2.400.3 Verification of terminal marking

It shall be verified that the terminal markings are correct according to Subclause 12.1.

---------------------- Page: 13 ----------------------
– 12 – IEC 60358-4:2018 © IEC 2018
10 Type tests

Clause 10 of IEC 60358-1:2012 is applicable unless otherwise specified in the specific

product standards.
11 Special tests

Clause 11 of IEC 60358-1:2012 is applicable unless otherwise specified in the specific

product standards.
12 Marking
12.1 Markings of the equipment
Clause 12 of IEC 60358-1:2012 is applicable with following modifications:

Actual values of capacitance C and C or C and C and parallel resistance (if any) R and

R 2 1 2 PR
or R and R or series resistance (if any) R and R or R and R shall be provided
P2 P1 P2 SR S2 S1 S2
to the customer either on name plate or in test report.
12.2 Markings of the terminals
Terminal markings shall be in accordance with Figure 401.
RC-divider C-divider CR-divider RCR-divider
Figure 401 – Different types of dividers
---------------------- Page: 14 ----------------------
IEC 60358-4:2018 © IEC 2018 – 13 –
Annex 4A
(informative)
Example of diagram of dividers
Figure 4A.400 shows an example of diagram of dividers.
Figure 402.1– Example of a diagram Figure 402.2 – Example of a diagram
for a capacitive divider for a RC-divider
Figure 4A.400 – Example of diagram of dividers
___________
---------------------- Page: 15 ----------------------
– 14 – IEC 60358-4:2018 © IEC 2018
SOMMAIRE

AVANT-PROPOS .................................................................................................................. 15

INTRODUCTION ................................................................................................................... 17

1 Domaine d'application ................................................................................................... 18

2 Références normatives .................................................................................................. 18

3 Termes et définitions ..................................................................................................... 18

4 Conditions de fonctionnement en service ....................................................................... 20

5 Caractéristiques assignées ............................................................................................ 20

6 Exigences de conception ............................................................................................... 20

7 Conditions d'essai ......................................................................................................... 22

8 Classification des essais ............................................................................................... 22

9 Essais individuels de série ............................................................................................ 22

10 Essais de type ............................................................................................................... 24

11 Essais spéciaux ............................................................................................................. 24

12 Marquage ...................................................................................................................... 24

Annexe 4A (informative) Exemple de schéma de diviseurs ................................................... 26

Figure 400 – Raccordement pour l'essai de tension sur la partie basse tension .................... 24

Figure 401 – Différents types de diviseurs ............................................................................ 25

Figure 4A.400 – Exemple de schéma de diviseurs ................................................................ 26

---------------------- Page: 16 ----------------------
IEC 60358-4:2018 © IEC 2018 – 15 –
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
CONDENSATEURS DE COUPLAGE
ET DIVISEURS CAPACITIFS –
Partie 4:
...

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