supply of supply, erection, testing & commissioning 55-75 kw, 380/480volt, 3 phase vvvf drive for main hoist of 50/6 ton eot crane , supply, erection, testing & commissioning 55-75 kw, 380/480volt, 3 phase vvvf drive for m ain hoist of 50/6 ton eot crane schneider make having model no. altivar 71 or equivalent model of schn eider or abb make only with install the vvvf drive in the existing control panel by removing existing un t and retrofit and adjust all the parameters as per the load & speed requirements of the consignee. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]