Outdoor type three-phase distribution transformers up to and including 100 KVA 11 KV- specification : part 1 non-sealed type (third revision (fouth reprint May 2009 including amendment no. 1) 

 - New Delhi  Buraeu of Indian standards, New Delhi  1989 
 - 7p. ; 30 cm. 
<br/><br/> Indian Standard No. : IS 1180 PT 1 
<br/><br/><label>Subjects--Index Terms: </label>IS 1180 PT 1