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BSI PD IEC TR 61439-0:2022

BSI PD IEC TR 61439-0:2022

$198.66

Low-voltage switchgear and controlgear assemblies – Guidance to specifying assemblies

Published By Publication Date Number of Pages
BSI 2022 70
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PDF Catalog

PDF Pages PDF Title
2 undefined
4 English
CONTENTS
8 FOREWORD
10 INTRODUCTION
12 1 Scope
2 Normative references
13 3 Terms and definitions
4 Application of assemblies within the IEC 61439 series
4.1 General
4.2 Assembly design and verification
15 4.3 Service conditions and interface characteristics
4.4 Application design
5 Electrical system
5.1 General
5.2 Earthing system
16 5.3 Nominal voltage
5.4 Transient overvoltages
18 5.5 Unusual voltage transients, temporary overvoltages
5.6 Rated frequency fn (Hz)
Figures
Figure 1 – Required rated impulse withstand voltage
19 5.7 Additional on-site testing requirements: wiring, operational performance and function
6 Short-circuit withstand capability
6.1 General
20 6.2 Prospective short-circuit current at supply terminals Icp (kA)
21 6.3 Prospective short-circuit current in the neutral
6.4 Prospective short-circuit current in the protective circuit
6.5 Short-circuit protective device (SCPD)
22 6.6 Coordination of short-circuit protective devices including external short-circuit protective device details
23 6.7 Data associated with loads likely to contribute to the short-circuit current
6.8 Multiple supplies
7 Protection of persons against electric shock
7.1 General
7.2 Basic protection (protection against direct contact)
7.2.1 General
24 7.2.2 Basic insulation provided by insulating material
7.2.3 Basic insulation by barriers or enclosures
7.3 Fault protection (protection against indirect contact)
7.3.1 General
25 7.3.2 Requirements for the protective conductor to facilitate automatic disconnection of the supply
26 7.3.3 Electrical separation
7.3.4 Class II protection (double or reinforced insulation)
8 Installation environment
8.1 General
8.2 Location type
27 8.3 Protection against access to hazardous parts, ingress of solid foreign bodies and ingress of water (IP code)
28 Tables
Table 1 – IP codes, first numeral
29 Table 2 – IP codes, second numeral
30 8.4 External mechanical impact (IK code)
Table 3 – IP codes, additional letter (optional)
31 8.5 Resistance to radiation
8.5.1 General
8.5.2 Solar irradiance
8.5.3 Ultraviolet (UV) radiation
8.6 Resistance to corrosion
32 8.7 Ambient air temperature
8.8 Maximum relative humidity
33 8.9 Pollution degree
34 8.10 Altitude
8.11 Electromagnetic compatibility (EMC)
35 8.12 Special service conditions
8.12.1 General
36 8.12.2 Climatic conditions
8.12.3 Protection against ingress of solid foreign bodies and ingress of water (IP code)
8.12.4 Shock, vibration, seismic occurrence and external mechanical impact (IK code)
8.12.5 Fire and explosion hazards
8.12.6 Exceptional overvoltages
37 8.12.7 Polluted atmospheres
8.12.8 EMC environment
9 Installation method
9.1 General
9.2 Assembly type
38 9.3 Portability
9.4 Maximum overall dimensions and weight
9.5 External conductor type(s)
39 9.6 Direction(s) of external conductors
9.7 External conductor material
9.8 External line conductor, cross sections, and terminations
9.9 External PE, N, PEN, PEM, PEL conductors’ cross sections, and terminations
40 9.10 Special terminal identification requirements
10 Storage and handling
10.1 General
10.2 Maximum dimensions and weight of transport units
10.3 Methods of transport (e.g. forklift, crane)
41 10.4 Environmental conditions different from the service conditions
10.5 Packing details
11 Operating arrangements
11.1 General
11.2 Access to manually operated devices
42 12 Maintenance and upgrade capabilities
12.1 General
12.2 Requirements related to accessibility for inspection and similar operations
43 12.3 Requirements related to accessibility for maintenance in service by authorized persons
12.4 Requirements related to extension under voltage
12.5 Protection against direct contact with hazardous live internal parts during maintenance or upgrade
44 12.6 Method of functional unit connection
12.7 Operating and maintenance gangways within an assembly
12.8 Internal separation (only relevant for assemblies in accordance with IEC 61439-2)
12.8.1 Fundamentals of separation
45 12.8.2 Considerations when determining a form of separation
46 12.8.3 Selecting the most appropriate form of separation
47 Figure 2 – Examples of separation included in IEC 61439-2
48 13 Current carrying capability
13.1 General
13.2 Rated current of the assembly InA (A) (maximum current allowable)
49 13.3 Loading of outgoing circuits within an assembly
50 13.4 Ratio of cross section of the neutral conductor to line conductors
13.4.1 General
13.4.2 Line conductors up to and including 16 mm2
13.4.3 Line conductors above 16 mm2
Table 4 – Assemblies and application ratings
51 14 Assembly design and routine verification processes
14.1 Design verification
14.1.1 Object
14.1.2 Methods
52 14.1.3 Records
14.2 Routine verification
14.2.1 General
14.2.2 Records
53 Annex A (informative)Cross section of copper cables suitablefor connection to terminals for external cables
Table A.1 – Cross section of copper cables suitable for connection to terminals for external cables
54 Annex B (informative)Forms of internal separation (see 12.8)
Table B.1 – Forms of internal separation
55 Figure B.1 – Symbols used in Figure B.2, Figure B.3 and Figure B.4
57 Figure B.2 – Form 1 and Form 2
58 Figure B.3 – Form 3
59 Figure B.4 – Form 4
60 Annex C (informative)Specification template for assemblies
Table C.1 – Example of items typically subject to agreement betweenthe assembly manufacturer and the user
64 Annex D (informative)Optional information
D.1 General
Table D.1 – Examples of optional items subject to agreement betweenthe assembly manufacturer and the specifier
65 D.2 Electrical conditions
D.2.1 Internal arc-fault considerations
66 D.2.2 Insulated busbars
67 Annex E (informative)List of notes concerning certain countries
68 Bibliography

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BSI PD IEC TR 61439-0:2022
$198.66