supply of supply installation testing and commissioning of 75kwsupply installation testing and commissioning of 75kw,supply installation testing and commissioning of 75kw(normal duty)/55kw(heavy duty) vv vf drive, voltage 380 to 500 volt, current with 150 percentage overload for 60 seconds and 180 percentag e for 02 seconds in cycle of every 300 seconds with protection against harsh environment 3c3 for 55kw 3 p hase induction motor of traverser, ambient temperature 50 degree c, with suitable rating of dynamic breaking resistance (dbr). make & model of vvvf drive: schneider electric make model no.atv340d55n4 e or abb make model no. vfdacs880-01-145a-3+d150+n5050 or siemens make model no.6sl3210-1pe31 -5ul0 or equivalent. [ warranty period: 30 months after the date of delivery ] ]