Table of Contents

 1     Scope          
 2     References
 3     Definitions
        3.1     Terms defined elsewhere       
        3.2     Terms defined in this Recommendation           
 4     Abbreviations and acronyms             
 5     Conventions            
 6     Definition and requirements of multiple power interface configuration at the input of ICT equipment    
        6.1     Individual power interface used for multiple power interface configuration      
       6.2      Multiple power interface configurations and requirements     
 7     Combination dependence of A, A3 and A3ac interfaces for multiple power feeds      
 8     Backfeeding             
Appendix I – Power input switch selector installation options    
       I.1      External switch selector installation and options for system interface connections         
       I.2      Switch selector installed within converter and interface connections    
Appendix II – Power input switch selector – General functionality    
      II.1      General description of the power input switch selector              
       II.2     Input power monitoring           
Appendix III – Backfeeding protection    
     III.1      Example of backfeeding protection     
Appendix IV – Example of upstream conversion for dual 48 V power feed configuration at input of ICT equipment    
Bibliography