To determine whether voltage optimisation will reduce your energy consumption, you will need to understand what percentage of your load is ‘voltage dependent’.
A voltage dependent load is an electrical device whose power consumption varies with the voltage being supplied to it. For example:
- Incandescent lamps
- Fluorescent lamps (with inductive ballasts)
- Metal halide and sodium lamps
- Most motors (including refrigeration compressors)
Motors in particular are an excellent target. Most motors in use today are designed to operate at a wide voltage range considerably below their typical supply. Operating motors at higher than their voltage range simply causes unnecessary losses.