supply of battery box assembly , battery box assembly for 3-phase locomotives, conforming to clw specification no. clw/m s/3/037 (alt-10) or latest with reference date as tender closing date, and clw drawing nos. 1209-06.138- 001 (alt-8 or latest with reference date as tender closing date) & 1209-06.138-003 (alt-3 or latest with ref erence date as tender closing date), as per abb drawing no. ia061-00154 , with modified hanger for batt ery box as per rdso drawing no. skel-4666 or latest with reference date as tender closing date. [ warr anty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]