09/30204033 DC : 0

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
   3.1 General terms
   3.2 Constructional units of PSC-ASSEMBLIES
4 Symbols and abbreviations
5 Interface characteristics
   5.3.3 Rated diversity factor (RDF)
   5.5 Other characteristics
6 Information
   6.1 PSC-ASSEMBLY designation marking
7 Service conditions
8 Constructional requirements
   8.2 Degree of protection provided by an ASSEMBLY
       enclosure
   8.2 Degree of protection provided by a PSC-ASSEMBLY
       enclosure
       8.2.1 Protection against mechanical impact
       8.2.101 Degree of protection of withdrawable parts
       8.3.2 Clearances
             8.4.3.2.2 Requirements for earth continuity
                       providing protection against the
                       consequences of faults within the
                       ASSEMBLY
             8.4.5.1 Devices to be operated or components
                     to be replaced by ordinary persons
             8.4.5.2 Requirements related to accessibility in
                     service by authorized persons
                     8.4.5.2.101 Operating and maintenance
                                 gangways within a PSC-ASSEMBLY
       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
       8.5.101 Description of the types of electrical connections
               of functional units
   8.101 Internal separation of PSC-ASSEMBLIES
9 Performance requirements
10 Design verification
   10.3 Degree of protection of ASSEMBLIES
        10.9.3.2 Impulse withstand voltage test
   10.13 Mechanical operation
11 Routine verifications
   11.8 Mechanical operation
Annexes
Annex AA (informative) - Forms of internal separation
Annex BB (informative) - Items subject to agreement between
         the ASSEMBLY Manufacturer and the User
Bibliography

BS EN 61439-2