Ac motor drives

QC3000 variable-speed ac motor drive for variable torque applications can be used in HVAC applications to control pumps and fans. The drive is available in a power range of 2 to 200 hp and input voltage ratings of 208, 240, 380, 415, 480, and 590V ac. QC3000 application guide examines modulation methods used to regulate air and fluid volumes: inlet guide vanes, outlet dampers, and throttling valves.

AC Technology Corp., 660 Douglas St., Uxbridge, MA 01569, FAX (508) 278-7873.