Altivar 21 22 to 75 kW - IP54 range Product Environmental Profile. The Altivar 21 range is used for control and rotation speed variation of an asynchronous electric motor, mainly in HVAC applications. The range includes products from 0.75 to 75 kW, operating at voltages from 200 to 480 V, single or three-phase. The representative product assessed is the Altivar 21 of rating 22 kW 400 V (ref ATV21WD22N4). The assessment was carried out conforming to ISO 14040 standard and considers the product's life cycle stages. The constituent materials include steel, aluminium alloys, brass, copper, tin, polyamide 66, polycarbonate, PBT, polyvinyl chloride, through-hole electronic components, epoxy resin printed circuit, others, ferrite, EPDM, and surface-mounted components.