UNE-EN 60950-21:2004

INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 General requirements
  4.1 Power from a telecommunication network
      (see also 1.4.11 of IEC 60950-1)
  4.2 Access to energized parts
      (see also 2.1.1.1 of IEC 60950-1)
  4.3 Protection in service access areas
      (see also 2.1.2 of IEC 60950-1)
  4.4 Protection in restricted access locations
      (see also 2.1.3 of IEC 60950-1)
  4.5 Interconnection of equipment
      4.5.1 General requirements
            (see also 3.5.1 of IEC 60950-1)
      4.5.2 Interconnection between RFT circuits
            (see also 3.5.2 of IEC 60950-1)
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
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

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