Harmonic Correction

What is Harmonics?

Modern technology has led to the ever increasing use of thyristors and other solid state devices in static power converters. These systems provide many benefits, but they also create harmonics which distort the AC wave form. Many types of equipment cause harmonics. However, it is the increased use of Static Power Converters that is the major cause of the substantial rise in harmonics on electrical systems. These Power Converters are used in modern UPS (Uninterruptible Power Supplies) and Motor Speed Control Systems.

This type of equipment usually operates at a low power factor thus also introducing the need for additional power factor correction equipment.

The following are all possible symptoms of harmonic waveform distortion:- 

•           Increase in the losses on the network and transformers.

•           Detrimental effect upon motor efficiency.

•           Nuisance tripping of circuit breakers.

•           Premature ageing of electrical insulation.

•           Malfunction or failure of some electronic circuits.

•           Some types of metering can be subject to erroneous operation.

•           Fuses suffer de-rating because of the heat generated by harmonics during normal operation.

•           Premature failure of unprotected capacitor installations.

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• What to do?

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Reactor connected capacitors can be installed which are designed to prevent resonance. They can also be designed to reduce the level of harmonics.

Procuro are able to offer the services of a fully qualified team of engineers, who can provide assistance and complete harmonic analyses.

All equipment is designed and manufactured specifically to meet Customer's requirements, using the highest quality components.

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