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BS EN IEC 61439-2:2021 – TC

BS EN IEC 61439-2:2021 – TC

$258.95

Tracked Changes. Low-voltage switchgear and controlgear assemblies – Power switchgear and controlgear assemblies

Published By Publication Date Number of Pages
BSI 2021 132
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IEC 61439-2:2020 defines the specific requirements for the power switchgear and controlgear assembly (abbreviated ‘PSC-assembly’ throughout this document see 3.1.101) as follows:

  • assemblies for which the rated voltage does not exceed 1? 000 V AC or 1? 500 V DC;
  • assemblies designed for a nominal frequency of the incoming supply or supplies not exceeding 1 ?000 Hz;

NOTE 1?Frequencies above 1 kHz are considered as high frequencies, see also IEC 60664-1:2007, 5.3.3.2.5 to take into account additional constraints to insulation coordination.

  • assemblies intended for indoor and outdoor applications;
  • stationary or movable assemblies with or without enclosures;
  • assemblies intended for use in connection with the generation, transmission, distribution and conversion of electrical energy, and for the control of equipment consuming electrical energy and for associated data processing;
  • 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 60092-302-2. This third edition cancels and replaces the second edition published in 2011. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:

  1. addition of Annexes DD, EE and FF for assemblies for use in photovoltaic installation;
  2. clarification of the requirements for forms of internal separation and the addition of the requirement, when the form of separation is higher than 1, all parts within the functional unit compartment that remain live when the functional unit is switched off shall be protected to at least IPXXB;
  3. alignment with the structure of IEC 61439-1:2020;
  4. addition of temperature-rise verification for; (i) temperature-rise verification of assemblies with natural cooling and circuits rated above 1 600 A by a combination of comparison with a reference design and calculation, and; (ii) temperature-rise verification of assemblies with active cooling and rated currents up to 1 600 A.
  5. consideration of IP with active cooling.

PDF Catalog

PDF Pages PDF Title
1 compares BS EN IEC 61439-2:2021
2 TRACKED CHANGES
Text example 1 — indicates added text (in green)
3 Contractual and legal considerations
4 Compliance with a British Standard cannot confer immunity from legal obligations.
Amendments/corrigenda issued since publication
5 Low-voltage switchgear and controlgear assemblies – Part 2: Power switchgear and controlgear assemblies (IEC 61439-2:2011IEC 61439-2:2020)
6 ForewordEuropean foreword
7 Endorsement notice
10 Annex ZZ
(informative)
11 Annex ZZ
(informative)
Table ZZ.1 — Correspondence between this European standard and Annex I of Directive 2014/35/EU [2014 OJ L96]
13 CONTENTS
14 INTERNATIONAL ELECTROTECHNICAL COMMISSION
FOREWORD
16 1 Scope
1 Scope
17 2 Normative references
18 3 Terms and definitions
3.1 General terms
3.1.101
3.1.102
3.1.103
3.1.104
3.1.105
3.1.106
19 3.2 Constructional units of assembliesassemblies
3.2 Constructional units of PSC-assembliesassemblies
3.2.101
3.2.102
3.2.103
3.2.104
3.4 Structural parts of assemblies
3.4.101
3.4.102
20 3.101 Electrical connections of functional units
3.101.1
3.101.2
assemblies 3.102.1
3.102.2
3.103 Location
3.103.1
3.103.2
4 Symbols and abbreviations
5 Interface characteristics
5.1 General
21 5.3.3 Group rated current of a main circuit (Ing)
5.4 Rated diversity factor (RDF)
5.6 Other characteristics
22 6 Information
6.1 assemblyAssembly designation marking
6.1 PSC-assemblyassembly designation marking
6.2.2 Instructions for handling, installation, operation and maintenance
7 Service conditions
8 Constructional requirements
8.1.1 General
8.2 Degree of protection provided by an assemblyassembly enclosure
8.2 Degree of protection provided by a PSC-assemblyassembly enclosure
23 8.2.101 PSC-assemblyassembly with withdrawable parts
8.3.2 Clearances
8.4.3.2.2 Requirements for earth continuity providing protection against the consequences of faults within the assemblyclass I assembly
8.4.3.2.2 Requirements for earth continuity providing protection against the consequences of faults within the class I PSC-assemblyassembly
8.4.6.1 Devices to be operated or components to be replaced by ordinary persons
8.4.6.2 Requirements related to accessibility in service by authorized persons
24 8.4.6.2.101 Operating and maintenance gangways within a PSC-assemblyassembly
8.5.2 Removable parts
8.5.2 Removable and withdrawable parts
8.5.2.101 Withdrawable parts
8.5.2.102 Interlocking and padlocking of removable and withdrawable parts
25 8.5.3 Selection of switching devices and components
8.5.101 Description of the types of electrical connections of functional units
8.101 Internal separation of PSC-assembliesassemblies
26 9 Performance requirements
9.3.1 General
10 Design verification
10.2.6 Mechanical impact
10.9.3.2 Impulse withstand voltage test
27 10.13 Mechanical operation
10 Design verification
10.2.6 Verification of protection against mechanical impact (IK code)
10.2.8 Mechanical operation
10.3 Degree of protection of assemblies (IP Code)
28 10.3 Degree of protection of PSC-assemblies (IP Code)
10.9.3.2 Impulse withstand voltage test
10.10 Temperature-rise
10.10.4.1 General
10.10.4.101 Assembly with natural cooling and rated current exceeding 1 600 A
10.10.4.101.1 Verification method
29 10.10.4.101.2 Results to be obtained
10.10.4.102 Assembly with active cooling and a rated current not exceeding 1 600 A
10.10.4.102.1 Verification method
10.10.4.102.3 Results to be obtained
10.11.5.3.1 General
30 10.11.5.5 Results to be obtained
11 Routine verification
11.8 Mechanical operation
Table 101 – Values of assumed loading
33 Table 104 – Forms of internal separation
Table 104 – Forms of internal separation
34 Annexes
35 Annex AA
(informative)
Figure AA.1 – Symbols used in Figures AA.2 and AA.3
36 Figure AA.2 – Forms 1 and 2
37 Form 3
Separation of busbars from all functional units
Form 4
Separation of busbars from all functional units
Figure AA.3 – Forms 3 and 4
38 Annex BBAnnex AA
(informative)
Table BB.1 – Items subject to agreement between the assembly manufacturer and the user
46 Annex BB
(informative)
47 Form 1
No internal separation
48 Form 2
Separation of busbars from all functional units
Figure BB.2 – Forms 1 and 2
49 Form 3
Separation of busbars from all functional units
Figure BB.3 – Form 3
50 Form 4
Separation of busbars from all functional units
Figure BB.4 – Form 4
51 Annex CC
(informative)
CC.1 General
CC.2 Method of measurement.
52 Figure CC.1 – Power loss measurement
53 Annex DD
(informative)
DD.0 General
DD.1 Overview
54 DD.3 Terms and definitions
DD.3.1 General terms
DD.3.1.101
DD.3.1.102
DD.4 Symbols and abbreviations
DD.5 Interface characteristics
55 DD.5.1 General
DD.5.2.2 Rated operational voltage (Ue) (of a circuit of an assembly)
DD.5.3.1 Rated current of the assembly (InA)
DD.5.3.2 Rated current of a circuit (Inc)
DD.5.4 Rated diversity factor (RDF)
DD.6 Information
DD.6.1 PSC-assembly designation marking
DD.6.1 PVA designation marking
DD.6.2.2 Instructions for handling, installation, operation and maintenance
56 DD.6.101 Warning labels
DD.7 Service conditions
DD.7.1.2 Pollution degree
DD.7.101 PVA under solar radiation conditions
Table DD.101 – Solar radiation conditions
57 DD.8.2.1 Protection against mechanical impact (IK code)
DD.8.2.2 Protection against contact with live parts, ingress of solid foreign bodies and water (IP code)
DD.8.4.1 General
DD.8.4.5 Limitation of steady-state touch currents and charge
DD.8.5.3 Selection of switching devices and components
DD.8.101 Thermal cycling durability
DD.8.102 Climatic durability
58 DD.9 Performance requirements
DD.9.1.3.1 Impulse withstand voltages of main circuits
DD.10 Design verification
DD.10.1 General
DD.10.10 Temperature-rise
DD.10.10.1 General
DD.10.10.2.3 Methods of test
DD.10.10.2.3.1 General
DD.10.10.2.3.101 Test for solar radiation effects
59 Figure DD.101 – Indicative arrangement of radiant heat lamps for temperature-rise test with simulated solar radiation
60 DD.10.101 Thermal cycling test
DD.10.102 Climatic test
DD.11 Routine verification
61 Annex EE
(informative)
Table EE.1 – Items subject to agreement between the PVA manufacturer and the user
65 Annex FF
(informative)
Table FF.1 – List of design verifications to be performed on PVA
67 Annex GG
(informative)
68 Bibliography
72 undefined
78 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
79 Annex ZZ (informative)Relationship between this European standard and the safety objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be covered
81 English
CONTENTS
82 FOREWORD
84 1 Scope
85 2 Normative references
3 Terms and definitions
88 4 Symbols and abbreviations
5 Interface characteristics
89 6 Information
90 7 Service conditions
8 Constructional requirements
93 9 Performance requirements
94 10 Design verification
98 11 Routine verification
Tables
Table 101 – Values of assumed loading
Table 102 – Test voltages across the open contacts of equipment suitable for isolation
99 Table 103 – Electrical conditions for the different positions of withdrawable parts
100 Table 104 – Forms of internal separation
101 Annexes
102 Annex AA(informative)Items subject to agreement betweenthe PSC-assembly manufacturer and the user
Table AA.1 – Items subject to agreement betweenthe PSC-assembly manufacturer and the user
106 Annex BB(informative)Forms of internal separation (see 8.101)
Figures
Figure BB.1 – Symbols used in Figures BB.2, BB.3 and BB.4
108 Figure BB.2 – Forms 1 and 2
109 Figure BB.3 – Form 3
110 Figure BB.4 – Form 4
111 Annex CC(informative)Determining power loss by measurement for circuits exceeding 1600 A in a reference design
112 Figure CC.1 – Power loss measurement
113 Annex DD(informative)Assemblies for use in photovoltaic installations
117 Table DD.101 – Solar radiation conditions
120 Figure DD.101 – Indicative arrangement of radiant heat lamps fortemperature-rise test with simulated solar radiation
122 Annex EE(informative)Items subject to agreement betweenthe photovoltaic assembly (PVA) manufacturer and the user
Table EE.1 – Items subject to agreement between the PVA manufacturer and the user
126 Annex FF(informative)Design verification (PVA only)
Table FF.1 – List of design verifications to be performed on PVA
128 Annex GG(informative)List of notes concerning certain countries
129 Bibliography

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BS EN IEC 61439-2:2021 - TC
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