Posts Tagged ‘capacitor bank’

Capacitor bank switching (back to basics)

July 10th, 2017 | Make a comment | Posted in Electrical distribution
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Last week, an electrical engineer with 14 years of experience in oil and gas, energy, mining and teaching sent us this back to basics type of article on Capacitor bank switching. Say hi to Carlos!

We thank him dearly for participating in the blog and if you too want to help us keeping this blog alive, send us your propositions of articles by


6/8 – Electrical equipment: improve power factor

January 20th, 2010 | 14 Comments | Posted in Power quality
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How to improve power factor ?

Power factor has been defined earlier as a function of active and apparent power. For sinusoidal (undistorted) voltage and current, a vector representation is also possible and helpful.
For most electrical loads like motors, the current I is lagging behind the voltage V by an angle phi.
Ia is called the “active” component of the current.
Ir is called the “reactive” component of the current.

Voltage and current vectors

Voltage and current vectors


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