supply of supply & installation of variablesupply & installation of variable,supply & installation of variable voltage variable frequency drive for traverser, heavy duty- 45kw/60hp, normal duty ? 55kw/75hp, input voltage-380 to 460v, 3 phase, 50/60hz, maximum output fre quency 0.599khz, ip20, with over voltage protection, over current protection, with class c3 emc filter integ rated or equivalent to schneider electric model no. atv340d45n4e. also, the proof of purchase from oem o r its authorized dealers & warranty certificate to be submitted along with supply of the material. [ warran ty period: 30 months after the date of delivery ] ]