I.E.C. <br/><br/>
IEC: 62053-11-2003;Electricity metering equipment (a.c.)-particular requirements-Part-11:Electromechanical meters for active energy (Classes 0,5,1 and 2). 

 - 1st 
 - Geneva  IEC  2003 
 - 29 
<br/><br/><label>Universal Decimal Class. No.: </label> /