SIST EN 60947-4-2:2000/A1:2002
(Amendment)Low-voltage switchgear and controlgear -- Part 4-2: Contactors and motor-starters - AC semiconductor motor controllers and starters
Low-voltage switchgear and controlgear -- Part 4-2: Contactors and motor-starters - AC semiconductor motor controllers and starters
EN following parallel vote
Niederspannungsschaltgeräte -- Teil 4-2: Schütze und Motorstarter - Halbleiter-Motor-Steuergeräte und -Starter für Wechselspannungen
Appareillage à basse tension -- Partie 4-2: Contacteurs et démarreurs de moteurs - Gradateurs et démarreurs à semiconducteurs de moteurs à courant alternatif
Nizkonapetostne stikalne in krmilne naprave – 4-2. del: Kontaktorji in motorski zaganjalniki – Polprevodniški krmilniki in zaganjalniki motorjev na izmenični tok – Dopolnilo A1
General Information
Relations
Standards Content (Sample)
SLOVENSKI SIST EN 60947-4-
2:2000/A1:2002
prva izdaja
STANDARD
september 2002
Nizkonapetostne stikalne in krmilne naprave – 4-2.�del: Kontaktorji in
motorski zaganjalniki – Polprevodniški krmilniki in zaganjalniki motorjev na
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Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters –
AC semiconductor motor controllers and starters (IEC 60947-4-2:1999/A1:2001)
ICS 5HIHUHQþQDãWHYLOND
29.130.20
SIST EN 60947-4-2:2000/A1:2002(en)
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---------------------- Page: 1 ----------------------
EUROPEAN STANDARD EN 60947-4-2/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2002
ICS 29.130.20
English version
Low-voltage switchgear and controlgear
Part 4-2: Contactors and motor-starters –
AC semiconductor motor controllers and starters
(IEC 60947-4-2:1999/A1:2001)
Appareillage à basse tension Niederspannungsschaltgeräte
Partie 4-2: Contacteurs et démarreurs Teil 4-2: Schütze und Motorstarter -
de moteurs – Halbleiter-Motor-Steuergeräte und
Gradateurs et démarreurs à -Starter für Wechselspannungen
semiconducteurs de moteurs (IEC 60947-4-2:1999/A1:2001)
à courant alternatif
(CEI 60947-4-2:1999/A1:2001)
This amendment A1 modifies the European Standard EN 60947-4-2:2000; it was approved by CENELEC
on 2002-03-05. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this amendment the status of a national standard without any
alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60947-4-2:2000/A1:2002 E
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EN 60947-4-2:2000/A1:2002 - 2 -
Foreword
The text of document 17B/1143/FDIS, future amendment 1 to IEC 60947-4-2:1999, prepared by
SC 17B, Low-voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was
submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to
EN 60947-4-2:2000 on 2002-03-05.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-12-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2005-03-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annexes I and ZA are normative and annex J is informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of amendment 1:2001 to the International Standard IEC 60947-4-2:1999 was approved by
CENELEC as an amendment to the European Standard without any modification.
__________
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- 3 - EN 60947-4-2:2000/A1:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
Insert in the existing list the following standard:
Publication Year Title EN/HD Year
IEC 60085 1984 Thermal evaluation and HD 566 S1 1990
classification of electrical
insulation
Add after IEC 60947-1:1999:
A1 2000 A1 2000
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NORME CEI
INTERNATIONALE IEC
60947-4-2
INTERNATIONAL
1999
STANDARD
AMENDEMENT 1
AMENDMENT 1
2001-10
Amendement 1
Appareillage à basse tension –
Partie 4-2:
Contacteurs et démarreurs de moteurs –
Gradateurs et démarreurs à semiconducteurs de
moteurs à courant alternatif
Amendment 1
Low-voltage switchgear and controlgear –
Part 4-2:
Contactors and motor-starters –
AC semiconductor motor controllers and starters
IEC 2001 Droits de reproduction réservés Copyright - all rights reserved
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
CODE PRIX
Commission Electrotechnique Internationale
S
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
---------------------- Page: 5 ----------------------
60947-4-2 Amend. 1 IEC:2001 – 3 –
FOREWORD
This amendment has been prepared by subcommittee 17B: Low-voltage switchgear and
controlgear, of IEC technical committee 17: Switchgear and controlgear.
The text of this amendment is based on the following documents:
FDIS Report on voting
17B/1143/FDIS 17B/1168/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until 2003. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
The contents of the corrigendum of March 2002 have been included in this copy.
___________
Page 3
CONTENTS
Add, on page 5, the titles of the following new annexes and tables:
Annex I (normative) Modified test circuit for short-circuit testing of semiconductor motor
controllers and starters
Annex J (informative) Flowchart for constructing bypassed semiconductor controllers tests
Table 17 – Temperature rise limits for insulated coils in air and in oil
Table 18 – Intermittent duty test cycle data
Page 7
FOREWORD
Replace, on page 9, the first two paragraphs by the following:
Annexes A, B, C, D and I form an integral part of this standard.
Annexes E, F, G, H and J are for information only.
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60947-4-2 Amend. 1 IEC:2001 – 5 –
Page 13
1 Scope and object
Replace the existing second paragraph by the following:
This standard characterizes controllers and starters with and without bypass means.
Page 15
2 Normative references
Insert, in the existing list, the title of the following standard:
IEC 60085:1984, Thermal evaluation and classification of electrical insulation
Add, after "IEC 60947-1:1999, Low-voltage switchgear and controlgear – Part 1: General
rules" the following:
Amendment 1 (2000)
Page 17
3 Definitions
Replace, on page 21, the title of the existing figure 1 by the following new title:
Figure 1 – Semiconductor motor control devices
Within figure 1
In the first column, replace:
"Semiconductor motor controller (all forms)" by "Semiconductor motor controller (forms 1, 2, 3)"
"Semiconductor motor starter (all forms)" by "Semiconductor motor starter (forms 1, 2, 3)"
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60947-4-2 Amend. 1 IEC:2001 – 7 –
Add, after the row "Hybrid motor controller HxB**", the following new rows:
Parallel mechanical
contact
Bypassed controller
L
T
Semiconductor controller
(Forms 1,2, 3)
Parallel mechanical
contact
Hybrid motor controller
Bypassed hybrid motor
L T
controller
Series Semiconductor
mechanical
controller
contact
(Forms HxA, HxB) (see 8.2.4.2.3)
Page 29
Add, after definition 3.1.23, the following new definition:
3.1.24
bypassed controller
equipment wherein the main circuit contacts of a mechanical switching device are connected
in parallel with the main circuit terminals of a semiconductor switching device, and wherein
the operating means of the two switching devices are co-ordinated
Page 43
5.3.5.3.1 Starting characteristics of squirrel cage and hermetic refrigeration motors
Replace the existing item b) by the following:
b) One direction of rotation with the inclusion of phase-control capability to provide controlled
acceleration to normal speed. Controllers and starters are rated for intermittent duty only
(AC-53b, AC-58b); for example after starting, the motor may be connected into a circuit
that bypasses the power semiconductors.
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60947-4-2 Amend. 1 IEC:2001 – 9 –
Page 47
Table 2 – Utilization categories
Replace the existing table by the following new table:
Utilization Typical application
category
AC-52a Control of slip ring motor stators: 8 h duty with on-load currents for start, acceleration, run
AC-52b Control of slip ring motor stators: intermittent duty
AC-53a Control of squirrel cage motors: 8 h duty with on-load currents for start, acceleration, run
AC-53b Control of squirrel cage motors: intermittent duty
AC-58a Control of hermetic refrigerant compressor motors with automatic resetting of overload releases:
8 h duty with on-load currents for start, acceleration, run
AC-58b Control of hermetic refrigerant compressor motors with automatic resetting of overload releases:
intermittent duty
NOTE 1 The means of bypassing the semiconductor controller may be integral with the controller/starter or
installed separately.
NOTE 2 A hermetic refrigerant compressor motor is a combination consisting of a compressor and motor, both
of which are enclosed in the same housing, with no external shaft or shaft seals, the motor operating in the
refrigerant.
Page 55
8.1.3 Clearances and creepage distances
Replace the existing text by the following new text:
Subclause 7.1.3 of IEC 60947-1 applies with the following additional requirement. Specified
minimum creepage distances only apply to those dimensions that are external to the
semiconductor.
Page 59
Add, after 8.2.1.5.2, the following new subclauses 8.2.1.6 to 8.2.1.9:
8.2.1.6 Type tested components in bypassed controllers
8.2.1.6.1 Switching devices which meet the requirements of their own relevant product
standard shall be considered as partially type tested devices subject to the following
additional requirements:
a) the temperature rises of mechanical switching devices shall comply with 8.2.2;
b) the making and breaking capacity of mechanical switching devices shall comply with
8.2.4.2;
c) semiconductor switching devices shall comply with 8.2.4.1 for utilization category AC-53b.
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60947-4-2 Amend. 1 IEC:2001 – 11 –
8.2.1.6.2 For the purpose of setting requirements for bypassed controllers, switching
devices which meet all of the requirements of 8.2.1.6.1, before they are installed, shall be
identified as type tested components suitable for unrestricted use in a bypassed controller
(see annex J).
8.2.1.7 Dependent components in bypassed controllers
For the purpose of setting requirements for bypassed controllers, switching devices which do
not meet all of the requirements of 8.2.1.6.1, before they are installed, shall be identified as
dependent components suitable only for restricted use in a bypassed controller (see annex J).
8.2.1.8 Unrestricted use of switching devices in bypassed controllers
When both the mechanical switching device and the semiconductor switching device are
identified as type tested components, these devices shall be arranged and connected to
comply with the assigned rating, duty and the end use intended by the manufacturer. There
shall be no further restrictions.
8.2.1.9 Restricted use of switching devices in bypassed controllers
When either one or both switching devices are identified as dependent components, the
switching devices shall comply with the following:
a) the switching devices shall be combined, rated and tested as a unit;
b) the switching devices shall be interlocked, by any combination of electrical, electronic and
mechanical means, such that the mechanical switching contacts shall not be required to
make or break overload currents without direct intervention by the semiconductor
switching device;
c) the semiconductor switching device shall be enabled to take over the control of the current
flowing in the main circuit whenever it is necessary to make or break overload currents.
8.2.2 Temperature rise
Replace the existing text of this subclause by the following:
Subclause 7.2.2 of IEC 60947-1 applies.
Replace the existing subclauses 8.2.2.1 to 8.2.2.3 by the following:
8.2.2.1 Terminals
Subclause 7.2.2.1 of IEC 60947-1 applies.
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60947-4-2 Amend. 1 IEC:2001 – 13 –
8.2.2.2 Accessible parts
Subclause 7.2.2.2 of IEC 60947-1 applies.
8.2.2.3 Ambient air temperature
Subclause 7.2.2.3 of IEC 60947-1 applies.
8.2.2.4 Main circuit
Replace the existing text of this subclause by the following:
8.2.2.4.1 General
The main circuit of a controller or starter, which carries current in the full-on state, including
the over-current releases which may be associated with it, shall be capable of carrying the
current I without the temperature rises exceeding the limits specified in 7.2.2.1 of IEC 60947-
e
1 when tested in accordance with 9.3.3.3.4:
– for a controller or starter intended for 8 h duty: its conventional thermal current (see
5.3.2.1 and/or 5.3.2.2);
– for a controller or starter intended for uninterrupted duty, intermittent or temporary duty:
the relevant rated operational current (5.3.2.3).
8.2.2.4.2 Series mechanical switching devices for hybrid controllers
For hybrid controllers, the temperature rise of the components in series with the main circuit
shall be verified by the procedures given in 9.3.3.3.4 and 9.3.3.6.1 (see table 11).
8.2.2.4.3 Parallel mechanical switching devices for bypassed controllers
a) Devices identified as type tested components (see 8.2.1.6) shall be capable of carrying the
current I without the temperature rises exceeding the limits specified in 7.2.2.1 of
e
IEC 60947-1.
b) For devices identified as dependent components (see 8.2.1.7), the temperature rise shall
be verified by the procedures given in 9.3.3.3.4 and 9.3.3.6.1 (including table 5 and
table 11). The device shall be tested as an integral part of a unit where the prescribed on-
load periods for the two switching devices (table 5) shall be determined by a sequence of
operations which is the same as intended in normal service.
8.2.2.4.4 Semiconductor devices connected in the main circuit
The temperature rise of the semiconductor devices connected in the main circuit shall be
verified by the procedures given in 9.3.3.3.4 and 9.3.3.6.1 (thermal stability test).
8.2.2.5 Control circuits
Replace the existing text of this subclause by the following:
Subclause 7.2.2.5 of IEC 60947-1 applies.
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60947-4-2 Amend. 1 IEC:2001 – 15 –
Replace the existing subclause 8.2.2.6 by the following:
8.2.2.6 Windings of coils and electromagnets
8.2.2.6.1 Uninterrupted and 8 h duty windings
With the maximum value of current flowing through the bypass circuit, the windings of the
coils, including those of electrically operated valves of electropneumatic contactors or
starters, shall withstand under continuous load and at rated frequency, if applicable, their
maximum rated control supply voltage without the temperature rise exceeding the limits
specified in table 17 of this standard and 7.2.2.2 of IEC 60947-1.
8.2.2.6.2 Intermittent duty windings
With no current flowing through the bypass circuit, the windings of the coils shall withstand, at
the rated frequency if applicable, their maximum rated control supply voltage applied as
detailed in table 18 according to their intermittent duty class, without the temperature rise
exceeding the limits specified in table 17 of this standard and 7.2.2.2 of IEC 60947-1.
8.2.2.6.3 Specially rated (temporary or periodic duty) windings
Specially rated windings shall be tested under operating conditions corresponding to the most
severe duty for which they are intended and their ratings shall be stated by the manufacturer.
NOTE Specially rated windings may include coils of starters which are energized during the starting period only,
trip coils of latched contactors and certain magnetic valve coils for inter-locking pneumatic contactors or starters.
Table 17 – Temperature rise limits for insulated coils in air and in oil
Temperature rise limit
(measured by resistance variation)
Thermal class of
insulating material
K
(IEC 60085)
Coils in air Coils in oil
A85 60
E 100 60
B 110 60
F 135 -
H 160 -
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60947-4-2 Amend. 1 IEC:2001 – 17 –
Table 18 – Intermittent duty test cycle data
Intermittent duty class One close-open Interval of time during which
operating cycle every the supply to the control coil is
Contactors Starters
maintained
1 1 3 600 s
3 3 1 200 s
On time should correspond to the
12 12 300 s
on-load factor specified by the
manufacturer
30 30 120 s
120 30 s
300 12 s
1 200 3 s
8.2.2.7 Auxiliary circuits
Replace the existing text of this subclause by the following:
Subclause 7.2.2.7 of IEC 60947-1 applies.
Page 61
8.2.2.8 Other parts
Replace the existing text of this subclause by the following:
Subclause 7.2.2.8 of IEC 60947-1 applies.
Page 63
8.2.4.1 Operating capability requirements
Replace the existing text of the third paragraph by the following:
Controllers and starters that are designated for utilization categories AC-52b, AC-53b and AC-
58b may be designated for those applications where long accelerating times are required. It
must be understood that the maximum thermal capacity of the controller may be depleted fully
during the on-load period. Therefore, a suitable off-load period (for example by bypass
means) shall be provided for the controller immediately after the starting time has expired.
The values of T corresponding to X values shall not be less than those given in table 4. For
x
corresponding starters, T shall be the maximum tripping time of its appropriate overload
x
relay.
Replace, on page 65, the existing text of the first paragraph by the following:
In tables 5 and 6, the duty cycle for utilization categories AC-52a, AC-53a, AC-58a
(F-S = 60-1), and the off-time for utilization categories AC-52b, AC-53b, AC-58b
(off-time = 1 440 s), are the least severe requirements for one start per hour. The
manufacturer may claim compliance with a more severe duty, in which case he shall conduct
a test for the most severe duty in accordance with table 3. If a controller has already been
tested and rated for a duty that is more severe than the standard duty, the manufacturer may
assign the same rating for standard duty without further testing.
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60947-4-2 Amend. 1 IEC:2001 – 19 –
Page 67
1)
Table 5 – Minimum requirements for thermal stability test conditions
Replace the existing table footnote 3) by the following:
3)
Level 2 is not applicable for AC-52b, AC-53band AC-58b because this is an off-load period.
In the second column, replace the column heading "Form of controller" by " Form of
5)
controller " and add the following footnote 5) to the table:
5)
For bypassed controllers refer to 8.2.2.4.3 and 8.2.2.4.4.
Page 69
Table 6 – Minimum requirements for overload capability test conditions
Replace the existing table b
...
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