Indian Standard : specification for low-voltage switchgear and controlgear - part 1  frame numbers 355 to 1000 and flange numbers 1 180 to 2 360 

 - New Delhi  Bureau of Indian Standards  1993 
 - 139p.  
<br/><br/> IS : 13947 (part 1) : 1993, IEC Pub 947-1 (1988) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Indian Standard