International Electrotechnical Commission <br/><br/>
IEC: 61850-7-4-20 2010; Communication networks and systems for power utility automation - Part 7-4: Basic communication structure - Compatible logical node classes and data object classes 

 - 2.0 
 - Geneva  IEC  2010 
 - 182 
<br/><br/><label>Universal Decimal Class. No.: </label> /