The line of adjustable-speed drives provide accurate and repeatable speed settings and can be used as a prime mover connected to a motor, or as a secondary drive The line of adjustable-speed drives ...

Prior to the advent of the adjustable-speed drive (ASD), the polyphase induction motor operated as a constant-speed motor. Figure 1 shows the well-known torque and current curves versus speed for the ...

Imagine an easy-to-install industrial technology that reduces energy consumption, eliminates mechanical vibrations and electronic harmonics, relaxes alignment tolerances and cuts maintenance needs.

An email message pointed me to the application note, “Electrical measurements on adjustable speed drives,” published by Fluke Corporation, a company that ...

A new, 28-page catalog covers adjustable-speed drives, right-angle gear drives, and linear actuators. Adjustable-speed drives can be used as a primary or secondary drive and eliminate the need for ...

The H2 line of adjustable speed drives are designed to provide reliability, ease of use, and high performance. The H2 line’s superior reliability is a result of extensive testing during each design ...

SIEMENS is introducing a new high-performance drive to the North American market. Sinamics G220 is a multi-purpose adjustable speed drive with built-in “clean power” technology, which reduces ...

Article 430, Part X provides the NEC requirements for adjustable-speed drive systems. Notice the word “systems,” which means this covers more than the drive itself. Size the branch or feeder circuit ...

For many retrofit projects, the use of a VFD seems like a “no brainer.” Drives are now cheaper and more reliable than ever, and the benefits of efficient control of motors can’t be beat. Still, there ...

Variable frequency drives (VFDs), also known as variable speed drives (VSDs), are used to modulate the speed of motors in various applications, from hydronic water pumping to VAV fan units to vacuum ...

The GA800 variable speed drives handle applications ranging from simple fans and pumps to high-performance test dynamometers requiring precise regulation. They feature highly flexible network ...

It is interesting to look at figures from the Energy Information Administration about where energy gets consumed in our economy. These figures reveal that industrial uses account for 31% of all energy ...