About 150 billion Euro is the annually cost of low power quality in the European market according to the Leonardo Power Quality Initiative and The Electric Power Research Institute (EPRi) found losses of 119-188 billion US dollars in the US market. EPRI found the most interesting finding: 80% of power quality interference are generated within a facility.
The impact of poor power quality is measured in three general areas: downtime, equipment problems and energy costs.
As the name suggests, a power quality evaluator is designed for the sole purpose of identifying issues involving power quality. It works by strategically sampling the AC voltage at various points along a waveform shape. From there, it digitizes all points or values and utilizes a microprocessor in order to execute a numerical analysis (which arrives at harmonic frequency magnitudes).
Being able to monitor current, a power quality analyzer can systematically calculate and display common power values, what gives you a whole picture of how your system works and where it fails miserably. It is worth remembering, however, that PQAs are not all the same. Some of them are built for single-phase systems only, while others are designed to evaluate three-phase systems. So, it is important that you use a PQA that perfectly fits your electrical system, both in design and maintenance.
Here are some important points that will help you find the right power quality evaluator:
- Determine the total power of your system. Is it single-phase or three-phase? Or is there a solar involved?
- Do you require logging and/or connectivity capabilities?
- What sort of values do you want to see on the device&#;s display?
- What voltage events are you looking to capture (e.g. dips & swells, flickers, harmonics, transients, etc.)?
- Are you interested in other parameters or calculations, such as crest factor, power inverter efficiency, etc.?
- What standards are you looking for a power quality evaluator?
Remember that poor power quality can always result in wasted energy, which means more costs. Try using a power quality evaluator and see the real difference it makes.
For more information, please visit Universal Frequency Counter.
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