The WATTSaver® e line of premium efficiency motors is LEESON® unique IRIS® voltage spike resistant insulation system, included at no extra cost. WATTSaver® e motorscarry a three year warranty in general purpose and inverter fed applications. These motors meet or exceed most utility rebate programs and the EPAct federally mandatedefficiency levels. The efficiency ratings have been verified to IEEE 112B test standards by LEESON® NVLAP-Certified lab. Cast iron 170 series motors can be field modified for forced ventilation service to extend the inverter fed operating range and an encoder package is stocked for closed-loop vector inverter systems. These motors can be converted to IEEE841 compliant using the custom PDQ Program.