International Electrotechnical Commission <br/><br/>
IEC: 61000-4-34 (Ed-1.1) - 2009-11; Eectromagnetic compactibility (EMC) - part 4-34: testing and measurement techniques - voltage dips, short interruptions and voltage variations immunity tests for equpment with mains current more than 16 A per phase 

 - Geneva  IEC  2009 
 - 68 
<br/><br/> downloaded from IEC website 
<br/><br/><label>Universal Decimal Class. No.: </label> /