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BS EN IEC 61439-2:2021

BS EN IEC 61439-2:2021

$198.66

Low-voltage switchgear and controlgear assemblies – Power switchgear and controlgear assemblies

Published By Publication Date Number of Pages
BSI 2021 62
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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
2 undefined
8 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
9 Annex ZZ (informative)Relationship between this European standard and the safety objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be covered
11 English
CONTENTS
12 FOREWORD
14 1 Scope
15 2 Normative references
3 Terms and definitions
18 4 Symbols and abbreviations
5 Interface characteristics
19 6 Information
20 7 Service conditions
8 Constructional requirements
23 9 Performance requirements
24 10 Design verification
28 11 Routine verification
Tables
Table 101 – Values of assumed loading
Table 102 – Test voltages across the open contacts of equipment suitable for isolation
29 Table 103 – Electrical conditions for the different positions of withdrawable parts
30 Table 104 – Forms of internal separation
31 Annexes
32 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
36 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
38 Figure BB.2 – Forms 1 and 2
39 Figure BB.3 – Form 3
40 Figure BB.4 – Form 4
41 Annex CC(informative)Determining power loss by measurement for circuits exceeding 1600 A in a reference design
42 Figure CC.1 – Power loss measurement
43 Annex DD(informative)Assemblies for use in photovoltaic installations
47 Table DD.101 – Solar radiation conditions
50 Figure DD.101 – Indicative arrangement of radiant heat lamps fortemperature-rise test with simulated solar radiation
52 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
56 Annex FF(informative)Design verification (PVA only)
Table FF.1 – List of design verifications to be performed on PVA
58 Annex GG(informative)List of notes concerning certain countries
59 Bibliography

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BS EN IEC 61439-2:2021
$198.66