IS:3427 - 1969 (with Amendment Nos. 1 & 2) : Specification for Metal-Enclosed Switchgear and Controlgear for Voltages above 1000V but not exceeding 11000 V 

 - New Delhi  BIS  1969 
 - 24p 
<br/><br/><label>Universal Decimal Class. No.: </label> /