supply of (vb) supply, commissioning & testing of variable voltage variable frequency (vvvf) equipment.(vb) supply, commissioning & testing of variable voltage variable frequency (vvvf) equipment.,supply, commissioning & testing of variable voltage variable frequency (vvvf) equipment for traction motor of type tme-49-35-4 for train -18 i nput supply:3-phase, 415 +/-5% volts,output rating -3-phase, 415v, 37kw (50hp), 72 amps, mounting type - wall mounting type of the drive-acs560-01-07 2a-4. specification as per attached annexure- a. make medha traction equipments or similar. [ warranty period: 30 months after the date of delivery ] ]