Power quality- Defined as set of electrical boundaries that allow a component to operate in its specified manner without loss of life expectancy and performance. The conclusion of god or bad power depends on the end user/ equipment. Power quality problems are caused by power frequency disturbances, electromagnetic interference and electrostatic discharge.
Loads.
- Frequency disturbances- Voltage sags or total power loss as the result of lightning/ contact with trees. Motors get asymmetrical- Caused by starting on large loads, therefore, current starts at a high level and flattens off over two to eight seconds. For example in starting a 50-hp ...