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     Reference configuration     
 7     Analysis on dangerous effect            
        7.1     Earthed type of high-voltage power system    
       7.2      Calculation of dangerous effects         
 8     Synthesized tolerance limits of dangerous effects from high-voltage
        8.1     General requirements             
        8.2     Synthesized tolerance limits  
 9     Protective measures            
        9.1     IDC that is in close proximity, but not co-earthed with a high-voltage substation            
        9.2     IDC is co-earthed with high-voltage substation              
        9.3     Methods for shortening the clearing time for earth fault           
        9.4     Step voltage and touch voltage            
10     Power frequency magnetic field and its mitigation measures            
       10.1     Characteristics of a power frequency magnetic field in a high-voltage substation          
       10.2     Power frequency magnetic field immunity requirements of servers in a cloud data centre    
       10.3     Mitigation measures for the effect of power frequency magnetic field              
Appendix I – Basic data for determining the tolerance limits of dangerous effects on an IDC from a high-voltage system    
       I.1      High-voltage transmission lines              
       I.2      Earthed types of high-voltage transmission system       
       I.3      Geographic environment between the high-voltage transmission lines and telecommunication network    
       I.4      Parameters of the communication network     

Appendix II – Limits related to danger in case of electromagnetic interference produced by AC power plants in fault conditions    
Bibliography