International electrotechnical Commission <br/><br/>
IEC: 60353-1989 Amendment No.1-2002-04: Line traps for A.C. Power systems 

 - Geneva  Internatioanl Electrotechnical Commission  2002-04 
 - 21 
<br/><br/> Downloaded from the IEC website 
<br/><br/><label>Universal Decimal Class. No.: </label> /