Indian Standard : outdoor type three - phase distribution transformers up to and including 100 kva 11 kv -- specification - part 1 

 - New Delhi  Bureau of Indian Standards  1990 
 - 7p.  
<br/><br/> IS : 1180 (part 1) - 1989 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DC voltage signals<br/>Indian Standard