dry type lighting transformer , design , engineering , manufacturing , supply , painting , assembly , inspection ( third party inspection ) and testing , supervision of installation , packing , transport at site , supervision of testing and commissioning at site , including mandatory , commissioning spares , tools & tackles if any required , documentation and providing guarantee for dry type lighting transformers located at iocl , dumad plant . scope shall be in accordance with the requirements stated in this requisition , specification , industry codes & standard and local rules & regulations as applicable and all the attached documents enclosed as annexure / attachments . , 0 . 415/0 . 433 kv , 50 hz , 160 kva , an , z = 4 % @ base kva ( no negative tolerance ) , solidly earthed , dyn11 , dry type lighting transformer equipped with off-circuit tap changer having + 7 . 5% to -7 . 5% taps ( in steps of 2 . 5 % ) , and other accessories in accordance with specification and data sheet attached with this requisition . , 0 . 415/0 . 433 kv , 50 hz , 100 kva , an , z = 4 % @ base kva ( no negative tolerance ) , solidly earthed , dyn11 , dry type lighting transformer equipped with off-circuit tap changer having + 7 . 5% to -7 . 5% taps ( in steps of 2 . 5 % ) , and other accessories in accordance with specification and data sheet attached with this requisition . , 0 . 415/0 . 433 kv , 50 hz , 50 kva , an , z = 4 % @ base kva ( no negative tolerance ) , solidly earthed , dyn11 , dry type lighting transformer equipped with off-circuit tap changer having + 7 . 5% to -7 . 5% taps ( in steps of 2 . 5 % ) , and other accessories in accordance with specification and data sheet attached with this requisition . , design , engineering , manufacturing , supply , painting , assembly , inspection and testing , supervision of installation , packing , transport at site , supervision of testing and commissioning at site , including mandatory , commissioning spares , tools & tackles if any required , documentation and providing guarantee for dry type lighting transformers located at jr refinery site . scope shall be in accordance with the requirements stated in this requisition , specification , industry codes & standard and local rules & regulations as applicable and all the attached documents enclosed as annexure / attachments . , 0 . 415/0 . 433 kv , 50 hz , 160 kva , an , z = 4 % @ base kva ( no negative tolerance ) , solidly earthed , dyn11 , dry type lighting transformer equipped with off-circuit tap changer having + 7 . 5% to -7 . 5% taps ( in steps of 2 . 5 % ) , and other accessories in accordance with specification and data sheet attached with this requisition .