SIST EN 60470:2000
(Main)High-voltage alternating current contactors and contactor-based motor starters
High-voltage alternating current contactors and contactor-based motor starters
Applies to contactors intended for closing and opening electric circuits, and, if combined with suitable relays, for protecting those circuits against operating overloads which may occur therein. Intended to state the characteristics of contactors; the conditions with which contactors shall comply with reference to their operation and behaviour and their dielectric properties; the tests intended for confirming that these conditions have been met and the methods to be adopted for these tests; the data to be marked on the apparatus.
Hochspannungs-Wechselstrom-Schütze und -Motorstarter mit Schützen
Contacteurs pour courants alternatifs haute tension et démarreurs de moteurs à contacteurs
S'applique aux contacteurs destinés à fermer et à ouvrir des circuits électriques et, s'ils sont équipés de relais appropriés, à assurer la protection de ces circuits contre les surcharges susceptibles de se produire en exploitation. Fixe les caractéristiques des contacteurs, les conditions auxquelles doivent répondre les contacteurs relativement à leur fonctionnement et à leur comportement ainsi qu'à leurs qualités diélectriques; les essais destinés à vérifier si ces conditions sont réalisées, ainsi que les méthodes à adopter pour ces essais; les indications à porter sur les appareils.
High-voltage alternating current contactors and contactor-based motor starters (IEC 60470:1999)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60470:2000
01-september-2000
High-voltage alternating current contactors and contactor-based motor starters
(IEC 60470:1999)
High-voltage alternating current contactors and contactor-based motor starters
Hochspannungs-Wechselstrom-Schütze und -Motorstarter mit Schützen
Contacteurs pour courants alternatifs haute tension et démarreurs de moteurs à
contacteurs
Ta slovenski standard je istoveten z: EN 60470:2000
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
SIST EN 60470:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 60470:2000
---------------------- Page: 2 ----------------------
SIST EN 60470:2000
---------------------- Page: 3 ----------------------
SIST EN 60470:2000
---------------------- Page: 4 ----------------------
SIST EN 60470:2000
---------------------- Page: 5 ----------------------
SIST EN 60470:2000
---------------------- Page: 6 ----------------------
SIST EN 60470:2000
INTERNATIONAL IEC
STANDARD
60470
Second edition
1999-10
High-voltage alternating current contactors
and contactor-based motor-starters
Contacteurs pour courants alternatifs haute tension
et démarreurs de moteurs à contacteurs
IEC 1999 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 Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
XC
International Electrotechnical Commission
For price, see current catalogue
---------------------- Page: 7 ----------------------
SIST EN 60470:2000
– 2 – 60470 © IEC:1999(E)
CONTENTS
Page
FOREWORD . 5
Clause
1 General. 7
1.1 Scope and object . 7
1.2 Normative references. 9
2 Normal service conditions . 10
2.1 Special service conditions . 10
3 Definitions. 10
3.1 General terms . 10
3.2 Assemblies of switchgear and controlgear . 11
3.3 Parts of assemblies. 11
3.4 Switching devices. 11
3.5 Parts of switchgear and controlgear. 13
3.6 Operation. 14
3.7 Characteristic quantities. 16
4 Ratings . 20
4.1 Rated voltage (U ) . 22
r
4.2 Rated insulation level . 22
4.3 Rated frequency (f ) . 23
r
4.4 Rated normal current and temperature rise. 23
4.5 Rated short-time withstand current (I ) . 24
k
4.6 Rated peak withstand current (I ) . 24
p
4.7 Rated duration of short circuit (t ). 24
k
4.8 Rated supply voltage of closing and opening devices, and of auxiliary and
control circuits (U ) . 24
a
4.9 Rated supply frequency of closing and opening devices, and of auxiliary circuits. 24
4.10 Rated pressure of compressed gas supply for insulation and/or operation. 24
5 Design and construction . 33
5.1 Requirements for liquids. 33
5.2 Requirements for gases . 33
5.3 Earthing . 33
5.4 Auxiliary and control equipment. 34
5.5 Dependent power operation. 34
5.6 Stored energy operation . 34
5.7 Independent manual operation . 34
5.8 Operation of releases. 34
5.9 Low- and high-pressure interlocking and monitoring devices. 34
5.10 Nameplates. 34
5.11 Interlocking devices . 35
5.12 Position indication . 35
5.13 Degrees of protection by enclosures. 35
5.14 Creepage distances . 35
---------------------- Page: 8 ----------------------
SIST EN 60470:2000
60470 © IEC:1999(E) – 3 –
Clause Page
5.15 Gas and vacuum tightness . 35
5.16 Liquid tightness. 36
5.17 Flammability. 36
5.18 Electromagnetic compatibility (EMC) . 36
6 Type tests . 41
6.1 General. 41
6.2 Dielectric tests . 43
6.3 Radio interference voltage (r.i.v.) test. 43
6.4 Measurement of the resistance of circuits. 43
6.5 Temperature-rise tests . 43
6.6 Short-time withstand current and peak withstand current tests . 47
6.7 Verification of the protection. 47
6.8 Tightness tests. 47
6.9 Electromagnetic compatibility tests (EMC) . 47
7 Routine tests.59
7.1 Dielectric test on the main circuit. 59
7.2 Dielectric test on auxiliary and control circuits. 59
7.3 Measurement of the resistance of the main circuit . 59
7.4 Tightness test . 59
7.5 Design and visual checks . 60
8 Guide to the selection of contactors and motor-starters for service . 61
9 Information to be given with enquiries, tenders and orders. 65
10 Rules for transport, storage, erection, operation and maintenance . 66
11 Safety . 66
Annex A (normative) Records and reports of type tests for making, breaking
and short-time current performance . 75
Figure 1 – Examples of speed/time curves . 67
Figure 2 – Test duties A and B – preferred earth point . 68
Figure 3 – Test duties A and B – alternative earth point. 69
Figure 4 – Test duty C – preferred earth point . 70
Figure 5 – Test duty C – alternative earth point . 71
Figure 6 – Representation by two parameters of a prospective TRV of a circuit . 71
Figure 7 – Representation by four parameters of a prospective TRV of a circuit. 72
Figure 8 – Representation of the specified TRV by a two-parameter reference line
and a delay line . 72
Figure 9 – Determination of power frequency recovery voltage . 73
Figure 10 – Characteristics for determining take-over current. 74
---------------------- Page: 9 ----------------------
SIST EN 60470:2000
– 4 – 60470 © IEC:1999(E)
Page
Table 1 – Ratings and characteristics – Rating/characteristic . 21
Table 2 – Utilization categories . 28
Table 3 – Characteristics dependent on starter type. 33
Table 4 – Characteristics of the opening operation of overload relays when energized
on all poles. 39
Table 5 – Characteristics of the opening operation of three-pole thermal overload relays
when energized on two poles only. 39
Table 6 – Characteristics of the opening by three-pole phase failure-sensitive thermal
overload relays when their poles are not equally energized. 40
Table 7 – Applicable type tests . 42
Table 8 – Test copper conductors for test currents up to 800 A inclusive. 44
Table 9 – Intermittent duty operating cycles . 45
Table 10 – Verification of rated making and breaking capacities – Conditions for making
and breaking corresponding to the several utilization categories at rated voltage U . 49
r
Table 11 – Relationship between current broken I and OFF time. 52
c
Table 12 – Overload current withstand requirements. 53
Table 13 – Transient recovery voltage characteristics . 58
Table 14 – Verification of the number of on-load operating cycles – Conditions for
making and breaking corresponding to the several utilization categories. 59
---------------------- Page: 10 ----------------------
SIST EN 60470:2000
60470 © IEC:1999(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE ALTERNATING CURRENT CONTACTORS
AND CONTACTOR-BASED MOTOR-STARTERS
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 60470 has been prepared by subcommittee 17A: High-voltage
switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear.
This standard is to be read in conjunction with IEC 60694, second edition, published in 1996,
which is applicable unless otherwise specified in this standard. In order to simplify the
indication of corresponding requirements, the same numbering of clauses and subclauses as in
IEC 60694 is used. Amendments to these clauses and subclauses are given under the same
references whilst additional subclauses are numbered from 101.
This second edition cancels and replaces the first edition of IEC 60470 published in 1974 and
its amendment 1 (1995), as well as IEC 60632-1.
The text of this standard is based on the following documents:
FDIS Report on voting
17A/545/FDIS 17A/554/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annex A forms an integral part of this standard.
A bilingual version of this publication may be issued at a later date.
---------------------- Page: 11 ----------------------
SIST EN 60470:2000
– 6 – 60470 © IEC:1999(E)
The committee has decided that this publication remains valid until 2011. At this date, in
accordance with the committee's decision, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
---------------------- Page: 12 ----------------------
SIST EN 60470:2000
60470 © IEC:1999(E) – 7 –
HIGH-VOLTAGE ALTERNATING CURRENT CONTACTORS
AND CONTACTOR-BASED MOTOR-STARTERS
1 General
1.1 Scope and object
This International Standard is applicable to a.c. contactors and/or contactor-based motor-
starters designed for indoor installation and operation at frequencies up to and including 60 Hz
on systems having voltages above 1 000 V but not exceeding 12 000 V.
It is applicable only to three-pole contactors and starters for use in three-phase systems,
and single-pole contactors and starters for use in single-phase systems. Two-pole contactors and
starters for use in single-phase systems are subject to agreement between manufacturer
and user.
Contactors and/or starters dealt with in this standard are not normally designed to interrupt
short-circuit currents. Therefore, suitable short-circuit protection (see 3.4.110.12 and note 2
below) forms part of the installation, but not necessarily of the contactor or the starter.
In this context, this standard gives requirements for
– contactors associated with overload and/or short-circuit protective devices (SCPD);
– starters associated with separate short-circuit protective devices and/or with separate
short-circuit and integrated overload protective devices;
– contactors or starters combined, under specified conditions, with their own short-circuit
protective devices. Such combinations, for example combination starters (see 3.4.110.9),
are rated as units.
Contactors intended for closing and opening electric circuits and, if combined with suitable
relays, for protecting these circuits against operating overloads which may occur therein, are
covered in this standard.
This standard is also applicable to the operating devices of contactors and to their auxiliary
equipment.
Motor-starters intended to start and accelerate motors to normal speed, to ensure continuous
operation of motors, to switch off the supply from the motor and to provide means for the
protection of motors and associated circuits against operating overloads are dealt with.
Motor-starter types included are
– direct-on-line starters;
– reversing starters;
– two-direction starters;
– reduced kVA (voltage) starters;
---------------------- Page: 13 ----------------------
SIST EN 60470:2000
– 8 – 60470 © IEC:1999(E)
– auto-transformer starters;
– rheostatic starters;
– reactor starters.
Starters, the operation of which depends on thermal electrical relays for motor protection
complying with IEC 60255-8, or motor-incorporated thermal protective devices dealt with in
IEC 60034-11, do not necessarily meet all the relevant requirements of this standard.
Overload relays for starters, including those based on solid-state technology, are covered by
this standard.
This standard does not apply to
– circuit-breaker-based motor-starters;
– single-pole operation of multi-pole contactors or starters;
– two-step auto-transformer starters designed for continuous operation in the starting
position;
– unbalanced rheostatic rotor starters, i.e. where the resistances do not have the same value
in all phases;
– equipment designed not only for starting, but also for adjustment of speed;
– liquid starters and those of the "liquid-vapour" type;
– semiconductor contactors and starters making use of semiconductor contactors in the
main circuit;
– rheostatic stator starters;
– contactors or starters designed for special applications.
This standard does not deal with components contained in contactors and contactor-based
motor-starters, for which individual specifications exist.
NOTE 1 Thermal electrical relays are covered by IEC 60255-8.
NOTE 2 High-voltage current-limiting fuses are covered by IEC 60282-1 and IEC 60644.
NOTE 3 Metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
are covered by IEC 60298.
NOTE 4 Disconnectors and earthing switches are covered by IEC 60129.
NOTE 5 High-voltage switches above 1 kV and less than 52 kV are covered by IEC 60265-1.
The object of this standard is to state
a) the characteristics of contactors and starters and associated equipment;
b) the conditions with which contactors or starters shall comply with reference to:
1) their operation and behaviour,
2) their dielectric properties,
3) the degrees of protection provided by their enclosures, where applicable,
4) their construction,
5) for combinations, interactions between the various components, for example SCPD
co-ordination;
c) the tests intended for confirming that these conditions have been met, and the methods to
be adopted for these tests;
d) the information to be given with the equipment or in the manufacturer's literature.
---------------------- Page: 14 ----------------------
SIST EN 60470:2000
60470 © IEC:1999(E) – 9 –
1.2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this International Standard. For dated references, subsequent
amendments to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this International Standard are encouraged to investigate the possibility
of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of IEC
and ISO maintain registers of currently valid International Standards.
IEC 60034-11:1978, Rotating electrical machines – Part 11: Built-in thermal protection –
Chapter 1: Rules for protection of rotating electrical machines
IEC 60050(441):1984, International Electrotechnical Vocabulary (IEV) – Chapter 441:
Switchgear, controlgear and fuses
IEC 60056:1987, High-voltage alternating-current circuit-breakers
IEC 60076-2:1993, Power transformers – Part 2: Temperature rise
IEC 60129:1984, Alternating current disconnectors and earthing switches
IEC 60255-8:1990, Electrical relays – Part 8: Thermal electrical relays
IEC 60265-1:1983, High-voltage switches – Part 1: High-voltage switches for rated voltages
above 1 kV and less than 52 kV
IEC 60282-1:1994, High-voltage fuses – Part 1: Current-limiting fuses
IEC 60298:1990, A.C. metal-enclosed switchgear and controlgear for rated voltages above
1 kV and up to and including 52 kV
Amendment 1 (1994)
IEC 60417, (all parts) Graphical symbols for use on equipment – Index, survey and compilation
of the single sheets
IEC 60644:1979, Specification for high-voltage fuse-links for motor circuit applications
IEC 60694:1996, Common specifications for high-voltage switchgear and controlgear standards
IEC 60726:1982, Dry-type power transformers
IEC 60947-5-1:1997, Low-voltage switchgear and controlgear – Part 5: Control circuit devices
and switching elements – Section one: Electromechanical control circuit devices
IEC 61233:1994, High-voltage alternating current circuit-breakers – Inductive load switching
IEC 61812-1:1996, Specified time relays for industrial use – Part 1: Requirements and tests
---------------------- Page: 15 ----------------------
SIST EN 60470:2000
– 10 – 60470 © IEC:1999(E)
2 Normal and special service conditions
2.1 Normal service conditions
Subclause 2.1 of IEC 60694 is applicable with the following modification.
For outdoor installations refer to 8.102.6.
2.2 Special service conditions
Subclause 2.2 of IEC 60694 is applicable with the following modification.
2.2.1 Altitude
Altitude classes of 1 000 m, 2 000 m and 3 000 m are recognized. See 8.102.7.
NOTE These classes are necessary for some types of operating mechanism.
3 Definitions
For the purpose of this International Standard, clause 3 of IEC 60694 applies with the following
additional definitions.
3.1 General terms
3.1.101
controlgear
a general term covering switching devices and their combination with associated control,
measuring, protective and regulating equipment, also assemblies of such devices and equip-
ment with associated interconnections, accessories, enclosures and supporting structures,
intended in principle for the control of electric energy consuming equipment [IEV 441-11-03]
3.1.102
over-current
a current exceeding the rated current [IEV 441-11-06]
3.1.103
short-circuit current
an over-current resulting from a short circuit due to a fault or an incorrect connection in an
electric circuit [IEV 441-11-07]
3.1.104
overload
operating conditions in an electrically undamaged circuit, which cause an over-current
[IEV 441-11-08]
3.1.105
conductive part
a part which is capable of conducting current although it may not necessarily be used for
carrying service current [IEV 441-11-09]
3.1.106
ambient air temperature
the temperature, determined under prescribed conditions, of the air surrounding the complete
switching device or fuse [IEV 441-11-13]
NOTE For switching devices or fuses installed inside an enclosure, it is the temperature of the air outside the enclosure.
---------------------- Page: 16 ----------------------
SIST EN 60470:2000
60470 © IEC:1999(E) – 11 –
3.2 Assemblies of switchgear and controlgear
No particular definitions.
3.3 Parts of assemblies
No particular definitions.
3.4 Switching devices
3.4.101
switching device
a device designed to make or break the current in one or more electric circuits [IEV 441-14-01]
3.4.102
mechanical switching device
a switching device designed to close and open one or more electric circuits by means of
separable contacts [IEV 441-14-02]
NOTE Any mechanical switching device may be designated according to the medium in which its contacts open
and close, e.g. air, SF , oil.
6
3.4.103
disconnector
a mechanical switching device which provides, in the open position, an isolating distance in
accordance with specified requirements [IEV 441-14-05]
NOTE A disconnector is capable of opening and closing a circuit either when negligible current is broken or made,
or when no significant change in the voltage across the terminals of each of the poles of the disconnector occurs. It
is also capable of carrying currents under normal circuit conditions and carrying for a specified time currents under
abnormal conditions such as those of short circuit.
3.4.104
earthing switch
a mechanical switching device for earthing parts of a circuit, capable of withstanding for a
specified time currents under abnormal conditions such as those of short circuit, but not
required to carry current under normal conditions of the circuit [IEV 441-14-11]
NOTE An earthing switch may have a short-circuit making capacity.
3.4.105
contactor (mechanical)
a mechanical switching device having only one position of rest, operated otherwise than by
hand, capable of making, carrying and breaking currents under normal circuit conditions
including operating overload conditions [IEV 441-14-33]
NOTE 1 A contactor may also be capable of making and breaking short-circuit currents.
NOTE 2 A contactor is usually intended to operate frequently.
3.4.106
electromagnetic contactor
a contactor in which the force for closing the normally open main contacts or for opening the
normally closed main contacts is provided by an electromagnet
3.4.107
vacuum contactor
a contactor in which the main contacts open and close within a highly evacuated envelope
---------------------- Page: 17 ----------------------
SIST EN 60470:2000
– 12 – 60470 © IEC:1999(E)
3.4.108
SF contactor
6
a contactor in which the main contacts open and close within an SF gas-filled compartment
6
3.4.109
latched contactor
a contactor, the moving elements of which are prevented by means of a latching arrangement from
returning to the position of rest when the operating means are de-energized [IEV 441-14-34]
NOTE The latching, and the release of the latching, may be mechanical, electromagnetic, pneumatic, etc.
3.4.110
starter
the combination of all the switching means necessary to start and stop a motor in combination
with suitable overload protection [IEV 441-14-38]
NOTE Starters may be designated according to the method by which the force for closing the main contacts is
provided.
3.4.110.1
direct-on-line starter
a starter which connects the line voltage across the motor terminals in one step [IEV 441-14-40]
3.4.110.2
reversing starter
a starter intended to cause the motor to reverse the direction of rotation by reversing the motor
primary connections even when the motor is running
3.4.110.3
two-direction starter
a starter intended to cause the motor to reverse the direction of rotation by reversing the motor
primary connections only when
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.