CONTENTS
FOREWORD 8
INTRODUCTION 10
1Scope 11
2Normative references 12
3Terms and definitions 15
3.1General terms 16
3.2Constructional units of assemblies 18
3.3External design of assemblies 19
3.4Structural parts of assemblies 20
3.5Conditions of installation of assemblies 21
3.6Insulation characteristics 22
3.7Protection against electric shock 253.8Characteristics 29
3.9Verification 33
3.10Manufacturer 34
4Symbols and abbreviations 34
5Interface characteristics 35
5.1General 35
5.2Voltage ratings 35
5.2.1Rated voltage (Un) (of the assembly) 35
5.2.2Rated operational voltage (Ue) (of a circuit of an assembly) 35
5.2.3Rated insulation voltage (Ui) (of a circuit of an assembly) 36
5.2.4Rated impulse withstand voltage (Uimp) (of the assembly) 36
5.3Current ratings 36
5.3.1Rated current of an assembly (InA) 36
5.3.2Rated current of a main outgoing circuit (Inc) 37
5.3.3Group rated current of a main circuit (Ing) 37
5.3.4Rated peak withstand current (Ipk) 38
5.3.5Rated short-time withstand current (Icw) (of a main circuit of an
assembly) 38
5.3.6Rated conditional short-circuit current (Icc) (of an assembly or a circuit
of an assembly) 38
5.4Rated diversity factor (RDF) 38
5.5Rated frequency (fn) 39
5.6Other characteristics 39
6Information 40
6.1Assembly designation marking 40
6.2Documentation 40
6.2.1Information relating to the assembly 40
6.2.2Instructions for handling, installation, operation and maintenance 40
6.3Device and/or component identification 41
7Service conditions 41
7.1Normal service conditions 41
7.1.1Climatic conditions 41
7.2Special service conditions 43
7.3Conditions during transport, storage and installation 43
8Constructional requirements 43
8.1Strength of materials and parts 43
8.1.1General 43
8.1.2Protection against corrosion 44
8.1.3Properties of insulating materials 44
8.1.4Resistance to ultra-violet (UV) radiation 45
8.1.5Mechanical strength 45
8.1.6Lifting provision 45
8.2Degree of protection provided by an assembly enclosure 45
8.2.1Protection against mechanical impact (IK code) 45
8.2.2Protection against contact with live parts, ingress of solid foreign bodies
and water (IP code) 46
8.2.3Assembly with removable parts 46
8.3Clearances and creepage distances 47
8.3.1General 47
8.3.2Clearances 47
8.3.3Creepage distances 48
8.4Protection against electric shock 48
8.4.1General 48
8.4.2Basic protection 48
8.4.3Fault protection 49
8.4.4Protection by total insulation Additional requirements for class II
assemblies 52
8.4.5Limitation of steady-state touch currents and charge 54
8.4.6Operating and servicing conditions 54
8.5Incorporation of switching devices and components 56
8.5.1Fixed parts 56
8.5.2Removable parts 56
8.5.3Selection of switching devices and components 56
8.5.4Installation of switching devices and components 57
8.5.5Accessibility 57
8.5.6Barriers 58
8.5.7Direction of operation and indication of switching positions 58
8.5.8Indicator lights and push-buttons 58
8.5.9Power factor correction banks 58
8.6Internal electrical circuits and connections 58
8.6.1Main circuits 58
8.6.2Auxiliary circuits 59
8.6.3Bare and insulated conductors 59
8.6.4Selection and installation of non-protected live conductors to reduce the
possibility of short-circuits 60
8.6.5Identification of the conductors of main and auxiliary circuits 60
8.6.6Identification of the protective conductor (PE, PEL, PEM, PEN) and of the neutral conductor (N) and the mid-point conductor (M) of the main circuits 60
8.6.7Conductors in AC circuits passing through ferromagnetic enclosures or
plates 61
8.7Cooling 61
8.8Terminals for external conductors cables 61
9Performance requirements 63
9.1Dielectric properties 63
9.1.1General 63
9.1.2Power-frequency withstand voltage 63
9.1.3Impulse withstand voltage 63
9.1.4Protection of surge protective devices 64
9.2Temperature-rise limits 64
9.2.1General 64
9.2.2Adjustment of rated currents for alternative ambient air temperatures 64
9.3Short-circuit protection and short-circuit withstand strength 65
9.3.1General 65
9.3.2Information concerning short-circuit withstand strength 65
9.3.3Relationship between peak current and short-time current 66
9.3.4Coordination of protective devices 66
9.4Electromagnetic compatibility (EMC) 66
10Design verification 67
10.1General 67
10.2Strength of materials and parts 68
10.2.1General 68
10.2.2Resistance to corrosion 68
10.2.3Properties of insulating materials 70
10.2.4Resistance to ultraviolet (UV) radiation 72
10.2.5Lifting 73
10.2.6Verification of protection against mechanical impact (IK code) 74
10.2.7Marking 74
10.2.8Mechanical operation 74
10.3Degree of protection of assemblies (IP Code) 75
10.4Clearances and creepage distances 76
10.5Protection against electric shock and integrity of protective circuits 76
10.5.1Effectiveness of the protective circuit General 76
10.5.2Effective earth continuity between the exposed-conductive-parts of the
class I assembly and the protective circuit 76
10.5.3Short-circuit withstand strength of the protective circuit 76
10.6Incorporation of switching devices and components 77
10.6.1General 77
10.6.2Electromagnetic compatibility 77
10.7Internal electrical circuits and connections 77
10.8Terminals for external conductors 77
10.9Dielectric properties 78
10.9.1General 78
10.9.2Power-frequency withstand voltage 78
10.9.3Impulse withstand voltage 79
10.9.4Testing of enclosures made of insulating material 81
External door or cover mounted operating handles of insulating material 81
10.9.6Testing of conductors and hazardous live parts covered by insulating
material to provide protection against electric shock 81
10.10Verification of Temperature-rise 82
10.10.1General 82
10.10.2Verification by testing 82
10.10.3Derivation of ratings for similar variants Verification by comparison 89
10.10.4Verification assessment 92
10.11Short-circuit withstand strength 96
10.11.1General 96
10.11.2Circuits of assemblies which are exempted from the verification of the
short-circuit withstand strength 97
10.11.3Verification by comparison with a reference design – Using a checklist 97
10.11.4Verification by comparison with a reference design(s) – Using
calculation 97
10.11.5Verification by test 98
10.12Electromagnetic compatibility (EMC) 104
Mechanical operation ................................................................................................
11Routine verification 105
11.1General 105
11.2Degree of protection against contact with hazardous live parts, ingress of
solid foreign bodies and water of enclosures 105
11.3Clearances and creepage distances 105
11.4Protection against electric shock and integrity of protective circuits 106
11.5Incorporation of built-in components 106
11.6Internal electrical circuits and connections 106
11.7Terminals for external conductors 106
11.8Mechanical operation 106
11.9Dielectric properties 106
11.10Wiring, operational performance and function 107
Annex A (normative) Minimum and maximum cross-section of copper conductors
cables suitable for connection to terminals for external conductors cables (see 8.8) 117
Annex B (normative) Method of calculating the cross-sectional area of protective
conductors with regard to thermal stresses due to currents of short duration 118
Annex C (informative) User information template 119
Annex D (informative) Design verification 123
Annex E (informative) Rated diversity factor 125
Annex F (normative) Measurement of clearances and creepage distances 138
Annex G (normative) Correlation between the nominal voltage of the supply system
and the rated impulse withstand voltage of the equipment 143
Annex H (informative) Operating current and power loss of copper conductors cables 145
Annex I (informative) Thermal equivalent of an intermittent current 149
Annex K (normative) Protection by electrical separation...........................................................
Annex L (informative) Clearances and creepage distances for North American region .............
Annex M (informative) North American temperature rise limits .................................................
Annex J (normative) Electromagnetic compatibility (EMC) 150
Annex K (normative) Operating current and power loss of bare copper bars 163
Annex L (informative) Guidance on verification of temperature-rise 166
Annex M (normative) Verification of the short-circuit withstand strength of busbar
structures by comparison with a tested reference design by calculation 173
Annex N (informative) List of notes concerning certain countries 178
Bibliography 184
Figure E.1 – Typical assembly 134
Figure E.2 – Example 1: Table E.1 – Functional unit loading for an assembly
with a rated diversity factor of 0,68 136
Figure E.3 – Example 2: Table E.1 – Functional unit loading for an assembly with a
rated diversity factor of 0,6 in Section B and 0,68 in Section C 137
Figure F.1 – Measurement of ribs clearance and creepage distances 142
Figure I.1 – Example of average heating effect calculation 149
Figure J.1 – Examples of ports 150
Figure L.1 – Verification of temperature-rise 172
Figure M.1 – Tested busbar structure (TS) 174
Figure M.2 – Non tested busbar structure (NTS) 175
Figure M.3 – Angular busbar configuration with supports at the corners 176
Table 1 – Minimum clearances in air (8.3.2) 107
Table 2 – Minimum creepage distances (8.3.3) 108
Table 3 – Cross-sectional area of a copper protective conductor (8.4.3.2.2) 109
Table 4 – Conductor selection and installation requirements (8.6.4) 109
Table 5 – Minimum terminal capacity for copper protective conductors (PE, PEN (8.8) 110
Table 6 – Temperature-rise limits (9.2) 110
Table 7 – Values for the factor na (9.3.3) 111
Table 8 – Power-frequency withstand voltage for main circuits (10.9.2) 112
Table 9 – Power-frequency withstand voltage for auxiliary and control circuits (10.9.2) 112
Table 10 – Impulse withstand test voltages (10.9.3) 112
Table 11 – Copper test conductors for rated currents up to 400 A inclusive
(10.10.2.3.2) ....................................................................................................................... 113
Table 12 – Copper test conductors for rated currents from 400 A to 4 000 7 000 A
(10.10.2.3.2) ....................................................................................................................... 114
Table 13 – Short-circuit verification by comparison with reference designs: checklist
(10.5.3.3, 10.11.3 and 10.11.4) 115
Table 14 – Relationship between prospective fault current and diameter of copper wire 116
Table 15 – Climatic conditions 116
Table A.1 – Cross-section of copper conductors cables suitable for connection
to terminals for external conductors cables 117
Table B.1 – Values of k for insulated protective conductors not incorporated in cables
or bare protective conductors in contact with cable covering 118
Table C.1 – User information template 119
Table D.1 – List of design verifications to be performed 123
Table E.1 – Examples of loading for an assembly 135
Table F.1 – Minimum width of grooves 138
Table G.1 – Correspondence between the nominal voltage of the supply system and
the equipment rated impulse withstand voltage 144
Table H.1 – Operating current and power loss of single-core copper cables with a
permissible conductor temperature of 70 °C (ambient temperature inside the assembly:
55 °C) 145
Table H.2 – Reduction factor k1 for cables with a permissible conductor temperature
of 70 °C (extract from IEC 60364-5-52:2009, Table B.52.14) 146
Table J.1 – Tests for EMC immunity for environment A (see J.10.12.2) 154
Table J.2 – Tests for EMC immunity for environment B (see J.10.12.2) 155
Table J.3 – Acceptance criteria when electromagnetic disturbances are present 157
Table K.1 – Operating current and power loss of bare copper bars with rectangular
cross-section, run horizontally and arranged with their largest face vertical, frequency 50 Hz to 60 Hz (ambient air temperature inside the assembly: 55 °C, temperature of the conductor 70 °C) 163
Table K.2 – Factor k4 for different temperatures of the air inside the assembly and/or for the conductors 164
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES –
Part 1: General rules
1 Scope
NOTE 1 Throughout this standard, the term ASSEMBLY (see 3.1.1) is used for a low-voltage switchgear and controlgear assembly.
This part of IEC 61439 lays down the general definitions and states the service conditions, construction requirements, technical characteristics and verification requirements for low- voltage switchgear and controlgear assemblies.
This standard cannot be used alone to specify an ASSEMBLY or used for a purpose of determining conformity. ASSEMBLIES shall comply with the relevant part of the IEC 61439 series; Parts 2 onwards.
NOTE Throughout this document, the term assembly(s) (see 3.1.1) is used for a low-voltage switchgear and controlgear assembly(s).
For the purpose of determining assembly conformity, the requirements of the relevant part of the IEC 61439 series, Part 2 onwards, apply together with the cited requirements of this document. For assemblies not covered by Part 3 onward, Part 2 applies.
This document applies to low-voltage switchgear and controlgear assemblies (ASSEMBLIES)
only when required by the relevant assembly standard as follows:
–assemblies for which the rated voltage does not exceed 1 000 V in case of AC or
1 500 V in case of DC;
–assemblies designed for a nominal frequency of the incoming supply or supplies not exceeding 1 000 Hz;
–assemblies intended for indoor and outdoor applications;
–stationary or movable assemblies with or without an enclosure;
–assemblies intended for use in connection with the generation, transmission, distribution and conversion of electric energy, and for the control of electrical energy consuming equipment.
–ASSEMBLIES designed for use under special service conditions, for example in ships and in rail vehicles provided that the other relevant specific requirements are complied with;
NOTE 2 Supplementary requirements for ASSEMBLIES in ships are covered by IEC 60092-302.
–ASSEMBLIES designed for electrical equipment of machines provided that the other relevant specific requirements are complied with.
NOTE 3 Supplementary requirements for ASSEMBLIES forming part of a machine are covered by the IEC 60204 series.
This standard applies to all ASSEMBLIES whether they are designed, manufactured and verified on a one-off basis or fully standardised and manufactured in quantity.
The manufacture and/or assembly may be carried out other than by the original manufacturer (see 3.10.1).
This document does not apply to individual devices and self-contained components such as motor starters, fuse switches, power electronic converter systems and equipment (PECS), switch mode power supplies (SMPS), uninterruptable power supplies (UPS), basic drive modules (BDM), complete drive modules (CDM), adjustable speed power drives systems (PDS), and other electronic equipment, etc. which will comply with their relevant product standards. This document describes the integration of devices and self-contained components into an assembly or into an empty enclosure forming an assembly.
For some applications involving, for example, explosive atmospheres, functional safety, there can be a need to comply with the requirements of other standards or legislation in addition to those specified in the IEC 61439 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 60068-2-2:2007, Environmental testing – Part 2-2: Tests – Test B: Dry heat
IEC 60068-2-11:1981, Basic environmental testing procedures – Part 2-11: Tests – Test Ka: Salt mist
IEC 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic (12 h + 12 h cycle)
IEC 60073:2002, Basic and safety principles for man-machine interface, marking and identification – Coding principles for indicators and actuators
IEC 60085:2007, Electrical insulation – Thermal evaluation and designation
IEC 60216 (all parts), Electrical insulating materials – Properties of thermal endurance
IEC 60227-3:1993, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 3: Non-sheathed cables for fixed wiring
IEC 60245-3:1994, Rubber insulated cables – Rated voltages up to and including 450/750 V – Part 3: Heat resistant silicone insulated cables
IEC 60245-4:1994, Rubber insulated cables – Rated voltages up to and including 450/750 V – Part 4: Cords and flexible cables
IEC 60364 (all parts), Low-voltage electrical installations
IEC 60364-4-41:2005, Low-voltage electrical installations – Part 4-41: Protection for safety – Protection against electric shock
IEC 60364-4-41:2005/AMD1:2017
IEC 60364-4-44:2007, Low-voltage electrical installations – Part 4-44: Protection for safety – Protection against voltage disturbances and electromagnetic disturbances
IEC 60364-5-51:2005, Electrical installations of buildings – Part 5-51: Selection and erection of electrical equipment – Common rules
IEC 60364-5-52:2009, Low-voltage electrical installations – Part 5-52: Selection and erection of electrical equipment – Wiring systems
IEC 60364-5-53:2001, Electrical installations of buildings – Part 5-53: Selection and erection of electrical equipment – Isolation, switching and control
IEC 60364-5-54:2011, Low-voltage electrical installations – Part 5-54: Selection and erection of electrical equipment – Earthing arrangements and protective conductors
IEC 60439 (all parts), Low-voltage switchgear and controlgear assemblies 2
IEC 60445:20102017, Basic and safety principles for man-machine interface, marking and identification – Identification of equipment terminals, conductor terminations and conductors
IEC 60447:2004, Basic and safety principles for man-machine interface, marking and identification – Actuating principles
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code) 34
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1: Principles, requirements and tests
IEC 60695-2-10:20002013, Fire hazard testing – Part 2-10: Glowing/hot-wire based test methods – Glow-wire apparatus and common test procedure
IEC 60695-2-11:20002014, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods – Glow-wire flammability test method for end-products (GWEPT)
IEC 60695-11-5:2004, Fire hazard testing – Part 11-5: Test flames – Needle-flame test method – Apparatus, confirmatory test arrangement and guidance
IEC 60695-2-12, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods – Glow-wire flammability index (GWFI) test method for materials
IEC 60865-1:19932011, Short-circuit currents – Calculation of effects – Part 1: Definitions and calculation methods
IEC TR 60890:19872014, A method of temperature-rise assessment by extrapolation for partially type-tested assemblies (PTTA) verification of low-voltage switchgear and controlgear assemblies by calculation
IEC 60947-1:2007, Low-voltage switchgear and controlgear – Part 1: General rules
IEC 60947-4-1:2018, Low-voltage switchgear and controlgear – Part 4-1: Contactors and motor-starters – Electromechanical contactors and motor-starters
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement techniques – Radiated, radio frequency, electromagnetic field immunity test 56
IEC 61000-4-3:2006/AMD1:2007
IEC 61000-4-3:2006/AMD2:2010
IEC 61000-4-4:20042012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:20052014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement techniques – Surge immunity test 7
IEC 61000-4-5:2014/AMD1:2017
IEC 61000-4-6:20082013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement techniques – Immunity to conducted disturbances, induced by radio-frequency fields
IEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8: Testing and measurement techniques – Power frequency magnetic field immunity test
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measurement techniques – Voltage dips, short interruptions and voltage variations immunity tests
IEC 61000-4-11:2004/AMD1:2017
IEC 61000-4-13:2002, Electromagnetic compatibility (EMC) – Part 4-13: Testing and measurement techniques – Harmonics and interharmonics including mains signalling at a.c. power port, low-frequency immunity tests 8
IEC 61000-6-3:2006, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards – Emission standard for residential, commercial and light-industrial environments
IEC 61000-6-3:2006/AMD1:2010
IEC 61000-6-4:20062018, Electromagnetic compatibility (EMC) – Part 6-4: Generic standards
–Emission standard for industrial environments 9
IEC 61082-1:2014, Preparation of documents used in electrotechnology – Part 1: Rules
IEC 61180 (all parts):2016, High-voltage test techniques for low-voltage equipment – Definitions, test and procedure requirements, test equipment
IEC/TS 61201:2007, Use of conventional touch voltage limits – Application guide
IEC 61439 (all parts), Low-voltage switchgear and controlgear assemblies
IEC 61921:2017, Power capacitors – Low-voltage power factor correction banks
IEC 62208:2011, Empty enclosures for low-voltage switchgear and controlgear assemblies – General requirements
IEC 62262:2002, Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)
IEC 81346-1:2009, Industrial systems, installations and equipment and industrial products – Structuring principles and reference designations – Part 1: Basic rules
IEC 81346-2:2019, Industrial systems, installations and equipment and industrial products – Structuring principles and reference designations – Part 2: Classification of objects and codes for classes
CISPR 11:20092015, Industrial, scientific and medical equipment – Radio-frequency disturbance characteristics – Limits and methods of measurement 10
CISPR 11:2015/AMD1:2016
CISPR 11:2015/AMD2:2019
CISPR 22, Information technology equipment – Radio disturbance characteristics – Limits and methods of measurement
CISPR 32:2015, Electromagnetic compatibility of multimedia equipment – Emission requirements
CISPR 32:2015/AMD1:2019
ISO 178:20012010, Plastics – Determination of flexural properties
ISO 178:2010/AMD1:2013
ISO 179 (all parts) Plastics – Determination of Charpy impact strength
ISO 179-1:2010, Plastics – Determination of Charpy impact properties – Part 1: Non- instrumented impact test
ISO 179-2:1997, Plastics – Determination of Charpy impact properties – Part 2: Instrumented impact test
ISO 179-2:1997/AMD1:2011
ISO 2409:20072013, Paints and varnishes – Cross-cut test
ISO 4628-3:20032016, Paints and varnishes – Evaluation of degradation of coatings – Designation of quantity and size of defects, and of intensity of uniform changes in appearance
– Part 3: Assessment of degree of rusting
ISO 4892-2:20062013, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-arc lamps
ISO 7010, Graphical symbols – Safety colours and safety signs – Registered safety signs
Bibliography
IEC 60038:2009, IEC standard voltages
IEC 60050-151:2001, International Electrotechnical Vocabulary (IEV) – Part 151: Electrical and magnetic devices
IEC 60050-151:2001/AMD1:2013
IEC 60050-151:2001/AMD2:2014
IEC 60050-151:2001/AMD3:2019
IEC 60050-161:1990, International Electrotechnical Vocabulary (IEV) – Part 161: Electromagnetic compatibility
IEC 60050-195:1998, International Electrotechnical Vocabulary (IEV) – Part 195: Earthing and protection against electric shock
IEC 60050-426:2008, International Electrotechnical Vocabulary (IEV) – Part 426: Equipment for explosive atmospheres
IEC 60050-441:1984, International Electrotechnical Vocabulary (IEV) – Part 441: Switchgear, controlgear and fuses
IEC 60050-442:1998, International Electrotechnical Vocabulary (IEV) – Part 442: Electrical accessories
IEC 60050-471:2007, International Electrotechnical Vocabulary – Part 471: Insulators
IEC 60050-581:2008, International Electrotechnical Vocabulary (IEV) – Part 581: Electromechanical components for electronic equipment
IEC 60050-601:1985, International Electrotechnical Vocabulary (IEV) – Part 601: Generation, transmission and distribution of electricity – General
IEC 60050-604:1987, International Electrotechnical Vocabulary – Chapter 604: Generation, transmission and distribution of electricity – Operation
IEC 60050-614:2016, International Electrotechnical Vocabulary (IEV) – Part 614: Generation, transmission and distribution of electricity – Operation
IEC 60050-826:2004, International Electrotechnical Vocabulary (IEV) – Part 826: Electrical installations
IEC 60050-851:2008, International Electrotechnical Vocabulary (IEV) – Part 851: Electric welding
IEC 60079 (all parts), Explosive atmospheres
IEC 60092-302:1997, Electrical installations in ships – Part 302: Low-voltage switchgear and controlgear assemblies
IEC 60092 (all parts), Electrical installations in ships
IEC 60112:2003, Method for the determination of the proof and the comparative tracking indices of solid insulating materials
IEC 60112:2003/AMD1:2009
IEC 60204 (all parts), Safety of machinery – Electrical equipment of machines
IEC 60204-1:2016, Safety of machinery – Electrical equipment of machines – Part 1: General requirements
IEC 60216 (all parts), Electrical insulating materials – Thermal endurance properties
IEC 60227-3:1993, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 3: Non-sheathed cables for fixed wiring
IEC 60227-3:1993/AMD1:1997
IEC 60227-4:1992, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 4: Sheathed cables for fixed wiring
IEC 60227-4:1992/AMD1:1997
IEC 60228:2004, Conductors of insulated cables
IEC 60245-3:1994, Rubber insulated cables – Rated voltages up to and including 450/750 V – Part 3: Heat resistant silicone insulated cables
IEC 60245-4:2011, Rubber insulated cables – Rated voltages up to and including 450/750 V – Part 4: Cords and flexible cables
IEC 60269-2, Low-voltage fuses – Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) – Examples of standardized systems of fuses A to K
IEC 60364-4-44:2007, Low-voltage electrical installations – Part 4-44: Protection for safety – Protection against voltage disturbances and electromagnetic disturbances 13
IEC 60364-4-44:2007/AMD1:2015
IEC 60364-4-44:2007/AMD2:2018
IEC 60364-5-53:2001, Electrical installations of buildings – Part 5-53: Selection and erection of electrical equipment – Isolation, switching and control 14
IEC 60364-5-53:2001/AMD1:2002
IEC 60364-5-53:2001/AMD2:2015
IEC 60364-5-54:2011, Low-voltage electrical installations – Part 5-54: Selection and erection of electrical equipment – Earthing arrangements and protective conductors
IEC 60364-5-55:2011, Electrical installations of buildings – Part 5-55: Selection and erection of electrical equipment – Other equipment
IEC 60364-5-55:2011/AMD1:2012
IEC 60364-5-55:2011/AMD2:2016
IEC 60417-SN:2011, Graphical symbols for use on equipment (available at http://www.graphical-symbols.info/equipment)
IEC 60502-1:2004, Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) – Part 1: Cables for rated voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV)
IEC 60502-1: 2004/AMD1: 2009
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1: Principles, requirements and tests
IEC TR 60664-2-1:2011, Insulation coordination for equipment within low-voltage systems – Part 2-1: Application guide – Explanation of the application of the IEC 60664 series, dimensioning examples and dielectric testing
IEC 60695-11-5:2016, Fire hazard testing – Part 11-5: Test flames – Needle-flame test method – Apparatus, confirmatory test arrangement and guidance
IEC 60721-3-3:2019, Classification of environmental conditions – Part 3-3: Classification of groups of environmental parameters and their severities – Stationary use at weatherprotected locations
IEC 60724:2000, Short-circuit temperature limits of electric cables with rated voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV)
IEC 60724:2000/AMD1:2008
IEC 60947 (all parts), Low-voltage switchgear and controlgear
IEC 60947-1:2020, Low-voltage switchgear and controlgear – Part 1: General rules
IEC 60947-2, Low-voltage switchgear and controlgear – Part 2: Circuit-breakers
IEC 60947-7-2:2009, Low-voltage switchgear and controlgear – Part 7-2: Ancillary equipment
– Protective conductor terminal blocks for copper conductors
IEC 61000-2-2:2002, Electromagnetic compatibility (EMC) – Part 2-2: Environment – Compatibility levels for low-frequency conducted disturbances and signalling in public low- voltage power supply systems
IEC 61000-2-2:2002/AMD1:2017
IEC 61000-2-2:2002/AMD2:2018
IEC 61000-4-13:2002, Electromagnetic compatibility (EMC) – Part 4-13: Testing and measurement techniques – Harmonics and interharmonics including mains signalling at a.c. power port, low-frequency immunity tests
IEC 61000-4-13:2002/AMD1:2009
IEC 61000-4-13:2002/AMD2:2015
IEC 61000-6-1:2016, Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity standard for residential, commercial and light-industrial environments
IEC 61000-6-2:2016, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards – Immunity standard for industrial environments
IEC 61000-6-3:2006, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards – Emission standard for residential, commercial and light-industrial environments
IEC 61000-6-3:2006/AMD1:2010
IEC 61082 (all parts), Preparation of documents used in electrotechnology
IEC/TR 61117:1992, A method for assessing the short-circuit withstand strength of partially type-tested assemblies (PTTA)
IEC 61140:20012016, Protection against electric shock – Common aspects for installation and equipment
IEC 61241(all parts), Electrical apparatus for use in the presence of combustible dust
IEC TR 61641, Enclosed low-voltage switchgear and controlgear assemblies – Guide for testing under conditions of arcing due to internal fault
IEC TR 61912-1:2007, Low-voltage switchgear and controlgear – Overcurrent protective devices – Part 1: Application of short-circuit ratings
IEC TR 61912-2:2009, Low-voltage switchgear and controlgear – Over-current protective devices – Part 2: Selectivity under over-current conditions
DIN 43671:1975, Copper busbars; design for continuous current
Copper Development Association Publication No. 22:1996, European Copper Institute Publication No. Cu0201, Copper for Busbars – Guidance for Design and Installation
UL 746B, Standard for polymeric materials – long term property evaluations
EN 50565-2:2014, Electric cables – Guide to use for cables with a rated voltage not exceeding 450/750 V (U0/U) – Specific guidance related to EN 50525 cable types
NEMA 250:2018, Enclosures for Electrical Equipment (1000 Volts Maximum)
C22.2 NO. 94.1-15, Enclosures for electrical equipment, non-environmental considerations
NMX-J-235/1-ANCE:2015, Enclosures for electrical equipment, non-environmental considerations
NMX-J-235/2-ANCE:2015, Enclosures for electrical equipment, environmental considerations
NFPA 70:2020, National Electrical Code (NEC)
NOM-001-SEDE-2018, Electrical Installations (Use)