EN 60110-1:1998

SLOVENSKI STANDARD
01-julij-1999
Power capacitors for inductive heating installation (IEC 60110-1:1998)
Power capacitors for induction heating installations -- Part 1: General
Leistungskondensatoren für induktive Erwärmungsanlagen -- Teil 1: Allgemeines
Condensateurs de puissance pour les installations de génération de chaleur par
induction -- Partie 1: Généralités
Ta slovenski standard je istoveten z: EN 60110-1:1998
ICS:
31.060.70 0RþQRVWQLNRQGHQ]DWRUML Power capacitors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
60110-1
INTERNATIONAL
Première édition
STANDARD
First edition
1998-06
Condensateurs de puissance
pour les installations de génération de chaleur
par induction –
Partie 1:
Généralités
Power capacitors for induction
heating installations –
Part 1:
General
 IEC 1998 Droits de reproduction réservés  Copyright - all rights reserved
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60110-1  IEC:1998 – 3 –
CONTENTS
Page
FOREWORD . 7
Clause
1 General. 9
1.1 Scope and object . 9
1.2 Normative references. 11
1.3 Definitions. 11
1.4 Service conditions. 17
2 Quality requirements and tests . 19
2.1 Test requirements . 19
2.2 Classification of tests . 21
2.3 Capacitance measurement. 23
2.4 Measurement of the tangent of the loss angle (tan δ) of a capacitor . 23
2.5 Voltage test between terminals (routine test) . 25
2.6 Voltage test between terminals and container . 25
2.7 Test on internal discharge device . 27
2.8 Sealing test. 27
2.9 Thermal stability test . 27
2.10 Capacitor losses test. 31
2.11 Capacitance as a function of temperature. 33
2.12 Sealing test of cooling ducts, if any. 33
2.13 Self-healing test (for self-healing metallized dielectric capacitors). 35
2.14 Short-circuit discharge test. 35
2.15 Ageing test (see IEC 60110-2). 35
2.16 Destruction test (see IEC 60110-2). 35
2.17 Disconnecting tests on internal fuses, if any (see IEC 60110-2) . 35
3 Overloads . 37
3.1 Maximum permissible voltage. 37
3.2 Switching voltages . 37
3.3 Maximum permissible current. 37
4 Safety requirements . 39
4.1 Creepage distances . 39
4.2 Discharge device . 39
4.3 Container connections. 39
4.4 Protection of the environment. 39
4.5 Additional safety requirements . 39
5 Markings . 41
5.1 Marking of the capacitor unit . 41
5.2 Marking of the bank . 43

60110-1  IEC:1998 – 5 –
Clause Page
6 Guide for installation and operation . 43
6.1 General. 43
6.2 Measures to obtain adequate cooling. 43
6.3 Choice of rated voltage, current and output . 45
6.4 Capacitors for frequent switching on load . 45
6.5 Choice of switchgear and switching methods for switching on load. 45
6.6 Switching of capacitors with fuses . 47
6.7 Operation with varying frequency. 49
6.8 Choice of the highest voltage for equipment of a capacitor bank . 49
6.9 Shunt capacitors connected in series . 49
6.10 Series capacitors . 49
6.11 Connecting leads . 49
6.12 Live parts along water supply . 51
6.13 Post insulators . 51
6.14 Danger of freezing for water cooled capacitors . 51
Annex A (normative) Methods of measuring the losses on air-cooled self-and
forced-ventilated capacitors . 53
Annex B (informative) Formulae for capacitors and installations. . 55
Annex C (informative) Bibliography . 59

60110-1  IEC:1998 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
––––––––––
POWER CAPACITORS FOR INDUCTION
HEATING INSTALLATIONS –
Part 1: General
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60110-1 has been prepared by IEC technical committee 33: Power
capacitors.
This first edition cancels and replaces IEC 60110, published in 1973, of which it constitutes a
technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
33/289/FDIS 33/291/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.
Annex A forms an integral part of this standard.
Annexes B and C are for information only.

60110-1  IEC:1998 – 9 –
POWER CAPACITORS FOR INDUCTION
HEATING INSTALLATIONS –
Part 1: General
1 General
1.1 Scope and object
This part of IEC 60110 is applicable both to indoor capacitor units and indoor capacitor banks
intended to be used, particularly, for power factor correction in induction heating, melting,
stirring or casting installations, and similar applications with controlled or adjustable a.c.
voltage systems in a frequency range up to 50 kHz, and with a rated voltage not exceeding 3,6
kV.
Additional requirements for capacitors protected by internal element fuses are given in
IEC 60110-2.
The following capacitors are excluded from this standard:
– series capacitors for power systems (see IEC 60143);
– capacitors for motor applications and the like (see IEC 60252);
– coupling capacitors and capacitor dividers (see IEC 60358);
– shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to
and including 1 000 V (see IEC 60831);
– shunt capacitors for a.c. power systems having a rated voltage above 1 000 V (see
IEC 60871);
– shunt capacitors of the non-self-healing type for a.c. systems having a rated voltage up to
and including 1 000 V (see IEC 60931);
– small a.c. capacitors to be used for fluorescent and discharge lamps (see IEC 61048 and
IEC 61049);
– capacitors to be used in power electronic circuits (see IEC 61071);
– capacitors for microwave ovens (see IEC 61270);
– capacitors for suppression of radio interference (under consideration);
– capacitors intended for use with d.c. voltage superimposed on the a.c. voltage.
Accessories such as insulators, switches, instrument transformers, fuses, etc., shall be in
accordance with the relevant IEC standards.
The object of this standard is:
a) to formulate uniform rules regarding performance, testing and rating;
b) to formulate specific safety rules;
c) to provide a guide for installation and operation.

60110-1  IEC:1998 – 11 –
1.2 Normative references
The following normative documents contain provisions which, through reference in the text,
constitute provisions of this part of IEC 60110. At the time of publication, the editions indicated
were valid. All normative documents are subject to revision, and parties to agreements based
on this part of IEC 60110 are encouraged to investigate the possibility of applying the most
recent editions of the normative documents indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
IEC 60050(436):1990, International Electrotechnical Vocabulary (IEV) – Chapter 436: Power
capacitors
IEC 60110-2, — Power capacitors for induction heating installations – Part 2: Ageing test,
1)
destruction test and requirements for disconnecting internal fuses
IEC 60143, Series capacitors for power systems
IEC 60831, — Shunt power capacitors of the self-healing type for a.c. systems having a rated
voltage up to and including 1 000 V
IEC 60871, — Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V
IEC 60931, — Shunt power capacitors of the non-self-healing type for a.c. systems having
...