BS EN 60439-3:1991+A2:2001:2010 Edition
$142.49
Low-voltage switchgear and controlgear assemblies – Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access to their use. Distribution boards
| Published By | Publication Date | Number of Pages |
| BSI | 2010 | 26 |
Replace the second note by:
This standard gives supplementary requirements for such enclosed distribution boards (DBU), which are stationary, type tested assemblies (TTA) for indoor use, containing protective devices and intended for use either in domestic (household) applications or in other places where unskilled persons have access for their use. Control and/or signalling devices may also be included. They are for use on a.c., with a nominal voltage to earth not exceeding 300 V. The outgoing circuits contain short-circuit protective devices, each having a rated current not exceeding 125 A with a total incoming load current not exceeding 250 A.
NOTE The nominal voltage to earth in an IT system is taken as the nominal voltage of the system.
Unskilled persons normally have access to these assemblies, e.g. for switching operations and for replacing fuse-links. Text deleted
Supplementary requirements to IEC 60439-1 for enclosed distribution boards which are stationary type tested assemblies for indoor use, containing protective devices and intended for use either in domestic applications or other places where unskilled persons have access to their use.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Foreword Foreword to A1:1994 Foreword to A2:2001 |
| 5 | Contents |
| 6 | 1 General 1.1 Scope 2 Definitions 2.1 General definitions 2.2 Definitions concerning constructional units of assemblies 2.3 Definitions concerning the external design of assemblies |
| 7 | 2.4 Definitions concerning the structural parts of assemblies 2.5 Definitions concerning the conditions of installation of assemblies 2.7 gangways within assemblies 3 Classification of assemblies 4 Electrical characteristics of assemblies |
| 8 | 5 Information to be given regarding the assembly 6 Service conditions 7 Design and construction |
| 11 | 8 Test specifications Table 7 List of type tests to be performed |
| 12 | Table 7a Sequence of type tests Table 7b List of routine tests to be performed |
| 14 | Table 13 Tightening torques for the verification of mechanical strength |
| 15 | Figure 1 Ball pressure test apparatus |
| 18 | Annex ZA (informative) A-deviations |
| 24 | National appendix NA (informative) Deletions from and IEC text amended by common modifications to IEC Publication 6043… |
| 25 | Natioanl appendix NB (informative) |
