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Learn about power engineering and HV/MV/LV substations. Study specialized technical articles, electrical guides, and papers.

Technical Articles

Does transformer hum make you nervous? It does me.

Noise is caused by magnetostricition (changes in shape) of the core laminations while the transformer is energized. Transformers emit a low-frequency, tonal noise that people living in their vicinity experience… Read more

May 04, 2016 | Power Substation

Does transformer hum make you nervous? It does me.

AC versus DC. Those were the days…

Take warning! Alternating currents are dangerous. They are fit only for powering the electric chair :) The only similarity between an AC and a DC lighting system is that they… Read more

Apr 13, 2016 | Electrical Lectures

AC versus DC. Those were the days...


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