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     Surge parameters  
        6.1     Transformer surge mitigation 
        6.2     Common-mode surges             
        6.3     Differential-mode surges         
 7     Characteristics         
        7.1     Characteristic measurement   
        7.2     Inter-winding capacitance        
        7.3     Insulation resistance  
        7.4     Signal transformer voltage-time product           
 8     Ratings        
        8.1     Rating verification        
        8.2     Rated impulse voltage               
        8.3     Signal transformer rated winding d.c. 
Annex A – Additional Transformer parameters to model Ethernet transformer differential surge let-through    
        A.1     Purpose          
        A.2     Parameter measurements for phase 1              
        A.3     Parameter derivations for phase 3      
Appendix I – 1.2/50 impulse    
        I.1     Introduction    
        I.2     Term definitions            
        I.3     1.2/50 waveform parameters  
Bibliography