I.S. EN 60950-21:2003

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 General requirements
  4.1 Power from a telecommunication network
  4.2 Access to energized parts
  4.3 Protection in service access areas
  4.4 Protection in restricted access locations
  4.5 Interconnection of equipment
      4.5.1 General requirements
      4.5.2 Interconnection between RFT circuits
5 Connection to telecommunication networks
6 Remote power feeding
  6.1 RFT-C circuit limits
      6.1.1 Limits under normal operating conditions
      6.1.2 Limits under single fault conditions
      6.1.3 Limits with one conductor earthed
  6.2 RFT-V circuit limits
      6.2.1 Limits under normal operating conditions
      6.2.2 Limits under single fault conditions
      6.2.3 Limits with one conductor earthed
  6.3 Separation from other circuits and parts
  6.4 Installation instructions
Annex A (informative) Remote power feeding
Bibliography

Applies to information technology equipment intended to supply and receive operating power via a TELECOMMUNICATION NETWORK, where the voltage exceeds the limits for TNV CIRCUITS.