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Low-voltage switchgear and controlgear -- Part 4-2: Contactors and motor-starters -- AC semiconductor motor controllers and starters (including soft-starters)
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Low-voltage switchgear and controlgear -- Part 4-2: Contactors and motor-starters -- AC semiconductor motor controllers and starters (including soft-starter)
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Low-voltage switchgear and controlgear. Contactors and motor-starters. Section 2: AC semiconductor motor controllers and starters
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GB/T 14048.6-2016: PDF in English (GBT 14048.6-2016) GB/T 14048.6-2016
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.120.40
K 31
GB/T 14048.6-2016 / IEC 60947-4-2.2011
Replacing GB 14048.6-2008
Low-voltage switchgear and control gear - Part 4-2.
Contactors and motor-starters - AC semiconductor motor
controllers and starters (including soft-starters)
(IEC 60947-4-2.2011, IDT)
ISSUED ON. AUGUST 29, 2016
IMPLEMENTED ON. MARCH 01, 2017
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 4
Introduction... 8
1 Scope... 9
2 Normative references... 10
3 Terms, definitions, symbols and abbreviations... 11
3.1 General... 11
3.2 Terms and definitions concerning a.c. semiconductor motor controllers and starters 11
3.3 Terms and definitions concerning hybrid motor controllers and starters... 14
3.4 Terms and definitions concerning EMC definitions... 18
3.5 Symbols and abbreviations... 20
4 Classification... 20
5 Characteristics of a.c. semiconductor motor controllers and starters... 20
5.1 Summary of characteristics... 20
5.2 Type of equipment... 21
5.3 Rated and limiting values for main circuits... 23
5.4 Utilization category... 27
5.5 Control circuits... 28
5.6 Auxiliary circuits... 29
5.7 Characteristics of relays and releases (overload relays)... 29
5.8 Co-ordination with short-circuit protective devices (SCPD)... 32
6 Product information... 32
6.1 Nature of information... 32
6.2 Marking... 34
6.3 Instructions for installation, operation, and maintenance... 34
7 Normal service, mounting and transport conditions... 35
7.1 Normal service conditions... 35
7.2 Conditions during transport and storage... 36
7.3 Mounting... 36
7.4 Electrical system disturbances and influences... 36
8 Constructional and performance requirements... 36
8.1 Constructional requirements... 36
8.2 Performance requirements... 37
8.3 EMC requirements... 54
9 Tests... 57
9.1 Kinds of tests... 57
9.2 Compliance with constructional requirements... 59
9.3 Compliance with performance requirements... 59
Annex A (normative) Marking and identification of terminals... 83
Annex B (BLANK)... 87
Annex C (normative) Co-ordination at the crossover current between the starter and
associated SCPD... 88
Annex D (BLANK)... 93
Annex E (BLANK)... 94
Annex F (informative) Operating capability... 95
Annex G (informative) Examples of control circuit configurations... 98
Annex H (BLANK)... 100
Annex I (normative) Modified test circuit for short-circuit testing of semiconductor
motor controllers and starters... 101
Annex J (informative) Flowchart for constructing bypassed semiconductor controllers
tests... 103
Annex K (normative) Extended functions within electronic overload relays... 104
Bibliography... 109
Foreword
GB 14048 "Low-voltage switchgear and control gear" contains the following parts at
present.
- Part 1.General rules;
- Part 2.Circuit-breakers;
- Part 3.Switches, disconnectors, switch-disconnectors and fuse-combination units;
- Part 4-1.Contactors and motor-starters - Electromechanical contactors and motor-
starters (Including motor protector);
- Part 4-2.Contactors and motor-starters - AC semiconductor motor controllers and
starters (including soft-starters);
- Part 4-3.Contactors and motor-starters - AC semiconductor controllers and
contactors for non-motor loads;
- Part 5-1.Control circuit devices and switching element - Electromechanical control
circuit devices;
- Part 5-2.Control circuit devices and switching elements - Proximity switches;
- Part 5-3.Control circuit devices and switching elements - Requirements for
proximity devices with defined behaviour under fault conditions (PDDB);
- Part 5-4.Control circuit devices and switching elements - Method of assessing the
performance of low-energy contacts - Special tests;
- Part 5-5.Control circuit devices and switching elements - Electrical emergency
stop device with mechanical latching function;
- Part 5-6.Control circuit devices and switching elements - DC interface for
proximity sensors and switching amplifiers (NAMUR);
- Part 5-7.Control circuit devices and switching elements - Requirements for
proximity devices with analog output;
- Part 5-8.Control circuit devices and switching elements - Three-position enable
switch;
- Part 5-9.Control circuit devices and switching elements - Flow switch;
- Part 6-1.Multiple function equipment - Transfer switching equipment;
- Part 6-2.Multiple function equipment - Control and protection switching
appliances (equipment) (CPS);
- Part 7-1.Ancillary equipment - Terminal blocks for copper conductors;
- Part 7-2.Ancillary equipment - Protective conductor terminal blocks for copper
conductors;
- Part 7-3.Ancillary equipment - Safety requirements for fuse terminal blocks;
- Part 8.Control units for built-in thermal protection (PTC) for rotating electrical
machines.
This Part is Part 4-2 of GB 14048.The reference number is GB/T 14048.6.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB 14048.6-2008 "Low-voltage switchgear and control gear - Part
4-2.Contactors and motor-starters - AC semiconductor motor controllers and starters
(including soft-starter)". Compared with GB 14048.6-2008, in addition to some
changes in the text, the main changes are as follows.
- Modify the standard's name;
- In Chapter 3, add terms and definitions. semiconductor switching device,
prospective current (of a circuit and with respect to a switching device), under-
voltage relay or release, under-current relay or release, stall sensitive electronic
overload relay, jam sensitive electronic overload relay, CO operation, O operation,
as well as the list of symbols and abbreviations;
- Delete relevant requirements for characteristics (5.1), marking (6.1) and
performance (8.2.6) of "on-off operation overvoltage";
- To be consistent with the latest requirements of GB 14048.4, improve the
characteristic requirements of overload relays; in Table 4, add overload tripping
classes and associated tripping time;
- Modify the characteristic requirements for overload relays; Specify the requirement
in 5.7.3b) "the maximum tripping time exceeding 40s";
- Modify the criteria for test results for blocking and commutating capability in Table
18;
- Add performance requirements and test methods for under-current relay or release,
stall sensitive electronic overload relay, jam sensitive electronic overload relay;
- Modify the limit requirements of the EMC test, to be consistent with the
requirements of relevant EMC standards;
- Delete Annex B (normative) Overload relays and releases. Put the relevant content
into the text;
- Modify Annex C (normative) Co-ordination at the crossover current between the
starter and associated SCPD, to be consistent with the relevant requirements of
Annex B of GB14048.4;
- Delete Annex D (normative) Requirements for radiated emission tests;
- Delete Annex E (informative) Method for converting radiated emission limit in GB
4824 to equivalent value of emission power;
- Delete Annex H (informative) Terms item agreed by user and manufacturer;
- Add Annex K (normative) Extended functions within electronic overload relays.
This Part uses translation method to identically adopt IEC 60947-4-2.2011 (Edition 3.0)
"Low-voltage switchgear and control gear - Part 4-2.Contactors and motor-starters -
AC semiconductor motor controllers and starters".
The Chinese documents which have consistency with the international normative
references in this Part are as follows.
- GB 755-2008, Rotating electrical machines - Rating and performance (IEC 60034-
1.2004, IDT);
- GB 14048.1-2012, Low-voltage switchgear and control gear - Part 1.General
rules (IEC 60947-1.2011, MOD);
- GB/T16935 (all parts), Insulation coordination for equipment within low-voltage
systems [IEC 60664 (all parts)];
- GB/T17626 (all parts), Electromagnetic compatibility - Testing and measurement
techniques [IEC 61000-4 (all parts)].
This part has made the following editorial changes according to the specific situation
of China.
- IEC 60410.1973 "Sampling plans and procedures for inspection by attributes" is
currently abolished. In the revision documents of the relevant standards of IEC
SC121A, the reference document for this technical content has been changed to
ISO 2859-1.Its corresponding national standard is GB/T 2828.1-2012 "Sampling
procedures for inspection by attributes - Part 1.Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection". Therefore, in this Part,
it uses national standard GB/T 2828.1-2012 as reference;
- Delete the alphabetical index of terms in 3.2 of IEC 60947-4-2.2011.Adjust the
subsequent clauses accordingly in this Part;
Low-voltage switchgear and control gear - Part 4-2.
Contactors and motor-starters - AC semiconductor motor
controllers and starters (including soft-starters)
1 Scope
This Part of GB/T 14048 applies to a.c. semiconductor motor controllers and starters,
which may include a series mechanical switching device, intended to be connected to
circuits, the rated voltage of which does not exceed 1000 V a.c.
This Part characterizes a.c. semiconductor motor controllers and starters with and
without bypass means.
AC semiconductor motor controllers and starters dealt with in this Part are not normally
designed to interrupt short-circuit currents. Therefore, suitable short-circuit protection
(see 8.2.5) shall form part of the installation, but not necessarily of the a.c.
semiconductor motor controller or starter.
In this context, this Part gives requirements for a.c. semiconductor motor controllers
and starters associated with separate short-circuit protective devices.
This Part does not apply to
- continuous operation of a.c. motors at motor speeds other than the normal speed;
- semiconductor equipment, including semiconductor contactors (see 2.2.13 of IEC
60947-1.2007) controlling non-motor loads;
- electronic a.c. power controllers covered by IEC 60146 series.
Contactors, overload relays and control circuit devices used in a.c. semiconductor
motor controllers and starters shall comply with the requirements of their relevant
product standard. Where mechanical switching devices are used, they shall meet the
requirements of their own IEC product standard, and the additional requirements of this
Part.
The object of this Part is to state as follows.
- the characteristics of a.c. semiconductor motor controllers and starters and
associated equipment;
- the conditions with which a.c. semiconductor motor controllers and starters comply
with reference to
• their operation and behaviour;
• their dielectric properties;
• the degrees of protection provided by their enclosures where applicable;
• their construction;
- the tests intended for confirming that these conditions have been met, and the
methods to be adopted for these tests;
- the information to be given with the equipment, or in the manufacturer's literature.
NOTE. For the purpose of this Part, the term "controller" may be used instead of "a.c.
semiconductor motor controller".
2 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.
GB/T 2828.1-2012, Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection (ISO 2859-1.1999, IDT)
GB 4824-2013, Industrial, scientific and medical (ISM) radio-frequency equipment
- Disturbance characteristics - Limits and methods of measurement (CISPR 11.2010,
IDT)
GB/T 11021-2014, Electrical insulation - Thermal evaluation and designation (IEC
60085.2007, IDT)
GB 13539.1-2015, Low-voltage fuses - Part 1.General requirements (IEC 60269-
1.2009, IDT)
IEC 60034-1.2010, Rotating electrical machines - Part 1.Rating and performance
IEC60664 (all parts), Insulation coordination for equipment within low-voltage
systems
IEC 60947-1.2007, Low-voltage switch gear and control gear - Part 1.General
rules
IEC 61000-4 (all parts), Electromagnetic compatibility (EMC) - Part 4.Testing and
measurement techniques
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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