UNE-EN 60950-21:2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Information technology equipment - Safety - Part 21: Remote power feeding
Hardcopy , PDF
05-01-2020
Spanish, Castilian, English
04-30-2004
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
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