A powerPerfector unit is more analogous to a current transformer, or CT. These are used on a small scale for […]
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powerPerfector is NOT a voltage transformer
The powerPerfector is not a conventional transformer, illustrated below: Figure 1 – Standard voltage transformer Voltage transformers of this type […]
Issues caused by phase voltage imbalance
Three-phase power supplies, as opposed to single phase, provide power at a near-constant level (415V on average). This is important […]
Power factor and reactive power
The ‘power factor’ of an electrical supply is the ratio of the ‘real power’ to the ‘apparent power’ of the […]
Transients: sudden, powerful voltage increases
Transients are large, very brief and potentially destructive increases in voltage. They can be caused by lightning strikes – often [...]
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Harmonics in power supplies
Harmonics are current and voltage waveforms that are at a higher frequency than the 50Hz main supply. They occur at […]
Addressing the issue of over-voltage in the UK electricity supply
Over-voltage causes equipment lifetimes to be reduced, and increases the energy consumed with no improvement in performance. Most load types […]
Overvoltage and deteriorating power quality in the UK electricity supply
Electrical equipment that has a poor quality power supply will operate with reduced efficiency, causing energy to be wasted, and […]