Harmonics and Power Quality
An ideal power quality for a source of energy to an electrical load is represented by a pure sine wave waveform of voltage. The term pure means that it does …
Introduction to Harmonics
Technology advancement has its pros and cons. Computers increase the efficiency of doing everyday office jobs. Most companies now have the policy of paperless office which is good for the …
Ground and Bonding – What is the Difference?
Grounding and bonding are two completely different concepts covered in PEC Part 1 Article 2.50. Grounding is the connection to the earth, while Bonding is the mechanical connection to an …
Time-Current Curves Using Excel
This tutorial serves a guide for the creation of time-current curves using Excel 2013. The user is expected to have at least an intermediate level of knowledge in the usage …
Effects of harmonics on Electrical Equipment
Harmonic distort the fundamental frequency of the mains voltage waveform which affects the performance of other electrical equipment and creates additional losses and heating. A total harmonic voltage distortion of …
Three Phase Voltage Unbalance – Causes, Effects & Mitigation
Voltage unbalance in a three phase system is a condition when the magnitude of at least one phase voltage is not within the acceptable limits of nominal voltage. There are …