- Home
- Companies
- TECO-Westinghouse
- Products
- Teco - Model PAM - Two-Speed Motors
Teco - Model PAM -Two-Speed Motors
For decades, Westinghouse PAM Motors have helped industries and utilities around the world improve operating economies.
In fact, TECO-Westinghouse has more Pole Amplitude Modulation (PAM) Motor experience than all of our competitors combined.
Today, our PAM Motors continue to be an innovative solution that offers a wide range of benefits for your controlled-flow applications.
PAM Motors are durable, reliable, and cost-effective – often with a payback period of a year or less.
PAM Motors are single-winding, two-speed, squirrel cage induction motors. These motors have the ability to operate at two fixed pole speeds.
This availability of many single winding two-speed combinations gives the PAM motor a much wider range of application than that of conventional single-winding, two-speed motors, where the ratio of one speed to the other must always be two to one.
For Unequaled Dielectric Strength and Voltage Endurance
PAM Motors are AC induction machines with two predetermined speeds. Pole Amplitude Modulation offers many benefits to industrial users:
- The speeds of a PAM Motor are changed electrically, rather than mechanically. This reduces HP input to the fan, thereby eliminating the need for speed-adjusting coupling devices, which are prone to slip energy loss.
- A PAM Motor is a practical and effective means of driving a load where a change of speed can provide operating economies.
- First costs are lower than that for a comparable two-speed, two-winding motor.
- As a single-winding machine, the PAM Motor is lighter, smaller and more efficient than a two-winding motor for comparable rating and application.
- Rotor heating can be reduced up to 40 percent when starting high-inertia loads by initially using the lower speed connection.
- The PAM Motor saves energy costs because speeds can be changed as operating conditions dictate changes in rates of flow.
After considering all the factors, including cost, space, power savings, and reliability, PAM Motors are an optimum choice for two-speed motor operation.
PAM Motors are an excellent economic choice for a variety for applications where a switch to the optimum speed can yield significant operating economies.
There are over 500 Westinghouse PAM Motors above 500 hp in operation at electric utilities and industrial plants, driving a variety of machinery including:
- Induced Draft Fans
- Forced Draft Fans
- Primary Fans
- Circulating Water Pumps
- Boiler Feed Pumps
- Compressors
Although the applications and speed combinations are different, the underlying reason for choosing the PAM Motor is the same:
For applications where a change of speed can offer operating economies, the PAM Motor is less costly to install and more efficient to operate than two-winding motors, two-motor arrangements, or motors with any find of hydraulic coupling.