Bureau of Indian Standards <br/><br/>
IS: 1445-1977(Reaffirmed 2004) Ed 3.5(1993-01); Specification for Porcelain Insulators for Overhead power lines with a Nominal Voltage Up to and including 1000 V (Second Revision)Incorporating amendment nos. 1,2,3,4 & 5 

 - 3.5 
 - New Dehli  IS  2004 
 - 23p 
<br/><br/><label>Universal Decimal Class. No.: </label> /