Learning Center

Shaft Grounding Rings - The Necessary Accessory for Your Motor and VFD

By Dan Hansen on 14th Jul 2014

Why do you need a shaft grounding ring (SGR)? Motors that are operated with a variable frequency drive (VFD) are more susceptible to bearing failure. In standard generated sine waves, the voltage is balanced; this means that t …

read more

Why Should You Use a Line Reactor?

By Yin on 30th Jun 2014

Why do our engineers recommend line reactors? After reading about How will line reactors help your VFD and What is a line reactor, you probably already have an idea how line reactors can help your VFD. Here are the reasons why o …

read more

How Do VFDs Save Energy (Video)?

By Craig Hartman on 27th Jun 2014

Video TranscriptToday we are going to talk about how VFDs save energy.I’d like to refer to the diagram on the screen. This is a diagram that shows a typical fan application. Let’s say in a commercial building, the bott …

read more

How Will Line Reactors Help Your Variable Frequency Drive?

By Yin on 23rd Jun 2014

The problem:While VFD's provide great advantages in energy savings and increased efficiency, they are the #1 cause of electrical power system pollution. Reactors have become the most common means of reducing this pollution (or dir …

read more

What is a Variable Frequency Drive (Video)?

By Yin on 19th Jun 2014

Video TranscriptToday we are going to talk about what is a VFD.In the 1880s, we saw the introduction of three-phase AC power. This was a marvelous invention by the great scientist Nikola Tesla. And running on that thre …

read more

What is a Line Reactor?

By Yin on 12th Jun 2014

A line reactor (also referred to as a "choke") is a variable frequency drive (VFD) accessory that consists of a coil of wire that forms a magnetic field as current flows through it. This magnetic field limits the rate of rise of t …

read more