One of the main factors for obtaining long reliable service from any piece of equipment is maintenance. Any type of electrical or mechanical device is subject to wear and tear. This can be further aggravated by undesirable…
If your facility is experiencing problems such as transformer or cable overheating, or if you have erratic electronic performance, your facility may be suffering from harmonic distortion. Or if you are planning to add loads to your…
Part Three: Screw compressor VFD application Also read Part One: Introduction Part Two: Variable frequency drives in refrigeration systems Screw compressors used in refrigeration plants are generally available in two types – one with a slide valve for…
With energy taking up a large part of a plant’s costs, having efficient technologies throughout can result in significant decreases in operating costs. The industry has seen many advances in energy efficient pumps which happen on a…
When applying variable speed control to deepwell submersible pumps, there are some unique concerns that need to be taken into consideration due to the mechanical design of the pump. One of these concerns is how to protect…
Part Two: Variable frequency drives in refrigeration systems (Part One of this series can be found here) The thermodynamic efficiency of a refrigeration system is significantly dependent on its operating temperatures. Other important practical issues such as…