supply of supply, erection, testing, commissioning & replacement of existing vvvf drive with new vvvf drive abb makesupply, erection, testing, commissioning & replacement of existing vvvf drive with new vvvf drive abb make,supply, erection, testing, commissioning & replacement of existing vvvf drive with new vv vf drive abb make, 75 kw normal duty, model no. acs560-01-145a-4 or equivalent/higher model of m/s schneider or yaskawa only. note: firm has to install the vvvf drive in the existing control pa nel by removing existing unit 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 ] ]