PREN 50310 : DRAFT 2009

Introduction
1 Scope and conformance
   1.1 Scope
   1.2 Conformance
2 Normative references
3 Definitions, abbreviations and symbols
   3.1 Definitions
   3.2 Abbreviations
   3.3 Symbols
4 General requirements
   4.1 Co-ordination
   4.2 Safety from electrical hazards
   4.3 Segregation between information technology cabling and
        power supply cabling
   4.4 Main earthing terminal (MET)
   4.5 Signal reference - Recommendation
5 Application of earthing networks
   5.1 General
   5.2 Requirements and recommendations
   5.3 Hierarchy of earthing network performance
6 Earthing networks
   6.1 General
   6.2 Star earthing networks
   6.3 Ring earthing networks
   6.4 Local mesh earthing networks
   6.5 Meshed earthing networks
   6.6 SRPP
7 Bonding
   7.1 Equipotential bonding conductors
   7.2 SRPP
   7.3 Corrosion
8 DC power distribution systems
   8.1 DC distribution system of secondary supply
   8.2 DC distribution system of tertiary supply
9 Power supply distribution systems
Annex A (normative) - Rationale about common bonding network
        (CBN) co-ordination
Annex B (informative) - Rationale for the integration of DC
        distribution systems into the merging of common bonding
        network (CBN) and meshed bonding network (MESH-BN)
Bibliography

Defines minimum requirements for earthing networks and connections (bonds) in buildings in which information technology equipment is intended to be installed to protect that equipment and interconnecting cabling from electrical hazards.