Induction Motor offers variable speed from 550-4,400 rpm.

Press Release Summary:

AC Inverter-Duty Induction Motor operates at 230 Vac with standard 3-phase AC inverter drive. Configured in 2 or 4-pole designs, power output is rated at 1/6-½ hp and 1/10-1/3 hp with fundamental frequencies from 10-80 Hz and 20-120 Hz respectively. Shaft extension, measuring ½ in. diameter provides heavy-duty load connections. Size 39 frame motor features open-frame housing, internal fan, electrically-insulated rotor, and center-tap Class-F thermal protector.

Original Press Release:

New Long-Life Induction Motor Saves Costs

DOVER, NH USA -- EADmotors' AC inverter duty induction motor now boasts higher quality design features for longer life expectancy. The improved version of the motor saves overall costs while offering a viable alternative to DC motors in variable speed applications. This inverter duty motor operates at 230VAC with a standard three-phase AC inverter drive. Variable speed operation from 550-4400rpm optimizes control, significantly improving system throughput. Configured in two or four-pole designs, power output is rated at 1/6-1/2HP and 1/10-1/3HP with fundamental frequencies from 10-80Hz and 20-120Hz respectively. A 1/2-in. diameter shaft extension provides for heavy-duty load connections without compromising performance. The four-bolt face mount design provides easy installation. The size 39 frame motor features an open frame housing and internal fan to prevent overheating in demanding operating cycles. A double varnish cycle maximizes magnet wire life. Motor bearing currents are eliminated with an electrically insulated rotor. A center-tap Class-F thermal protector is added for safety. Contributing to long bearing life are these features; two-plane rotor balance, calibrated bearing pre-load and high temperature synthetic grease. A variety of engineered options suit customer application requirements including extended shafts, shafts with double ends, special cables and lead wires, connectors and mounting options. This long-life motor performs reliably in a variety of industrial and commercial applications where a combination of variable speed, high power and precise control are desirable. Specific applications include air moving equipment and pumps and other applications requiring variable speed performance. For more information, contact Tom Ouellette, EADmotors, 1 Progress Drive, Dover, NH USA 03820, Tel: (603) 742-3330, Fax: (603) 742-9080, email:,

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