BS EN IEC 62368-3:2020
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Audio/video, information and communication technology equipment – Safety aspects for DC power transfer through communication cables and ports
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 32 |
IEC 62368-3:2017 applies to equipment intended to supply and receive operating power through communication cables or ports. It covers particular requirements for circuits that are designed to transfer DC power from a power sourcing equipment (PSE) to a powered device (PD). The power transfer uses voltages at ES1 or ES2 or in very specific cases voltage levels at ES3. Any cable provided with a connector defined by an industry standard that permits DC power transfer between equipment is considered a communication cable even if communication does not take place. For example, a USB cable can be used just to recharge a portable device battery. This International Standard is to be used in conjunction with IEC 62368-1:2014. It has the status of a group safety publication in accordance with IEC Guide 104. The subclauses of IEC 62368-1 apply as far as reasonable. Where safety aspects are similar to those of IEC 62368-1, the relevant clause or subclause of IEC 62368-1 is given for reference in a note in the relevant subclause. Where a requirement in IEC 62368-3 refers to a requirement or criterion of IEC 62368-1, a specific reference to IEC 62368-1 is made. This group safety publication is primarily intended to be used as a product safety standard for the products mentioned in the scope, but shall also be used by technical committees in the preparation of standards for products similar to those mentioned in the scope of this standard, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51. Keywords: Communication, Safety, Cables, DC Power Transfer,
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 7 | English CONTENTS |
| 9 | FOREWORD |
| 11 | 1 Scope 2 Normative references |
| 12 | 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions |
| 13 | 3.2 Abbreviated terms |
| 14 | 4 General requirements 5 Power transfer using ES1 or ES2 voltages 5.1 General requirements 5.2 Electrical-caused injury, electrical sources and safeguards 5.3 Electrical-caused fire, power sources and safeguards 5.3.1 DC power transfer interconnection to building wiring |
| 15 | 5.3.2 DC power transfer interconnection to other equipment 5.4 Safeguards to protect against a single fault condition in the PSE 5.4.1 Requirement for the PSE |
| 16 | 5.4.2 Requirement for the PD 6 Power transfer using RFT 6.1 General requirements 6.2 Connection to ICT networks 6.3 Electrically caused injury 6.3.1 Classification and limits of electrical energy sources |
| 17 | Figures Figure 1 – Maximum current after a single fault |
| 19 | 6.3.2 Accessibility to electrical energy sources and safeguards Figure 2 – Maximum voltages permitted after a single fault |
| 20 | 6.3.3 Safeguards |
| 21 | 6.3.4 Installation instructions |
| 22 | 6.4 Electrically caused fire 6.4.1 Classification of RFT power sources 6.4.2 Fire protection requirements Figure 3 – Limits for capacitance values of RFT circuitsof the total system |
| 23 | Table 1 – RFT-V circuits, power and current limitations |
| 24 | Annex A (informative)Remote power feeding A.1 Overview A.2 Operational considerations |
| 25 | A.3 Safety considerations A.4 Principle of remote power feeding A.4.1 RFT-C circuits |
| 26 | Figure A.1 – Example of a remote power feeding RFT-C system Figure A.2 – Example of a remote power feeding RFT-C system with repeater |
| 27 | A.4.2 RFT-V circuits A.5 Safety aspects A.5.1 Steady-state body current Figure A.3 – Example of a remote power feeding RFT-V system |
| 28 | A.5.2 Body resistance A.5.3 Charged capacitance |
| 29 | Annex B (informative)Rationale for 5.4 |
| 30 | Bibliography |
