Power factor correction

1. Power factor correction

Level 3 Diploma in Electrical Installations (Buildings and Structures)
PowerPoint
presentation
Unit 302: Principles of electrical science
Power factor correction
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2. What causes low power factor?

Level 3 Diploma in Electrical Installations (Buildings and Structures)
What causes low power factor?
Inductive loads (which are sources of reactive power) include:
transformers
induction motors
fluorescent luminaires.
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3. Power factor correction

Level 3 Diploma in Electrical Installations (Buildings and Structures)
Power factor correction
To correct a lagging power factor we connect a device that creates a
leading power factor. This usually takes the form of:
capacitors (bulk correction and load correction)
synchronous motor.
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4.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
© 2018 City and Guilds of London Institute. All rights reserved.
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5.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
A LOW power factor correction has
a LARGE angle in degrees.
A HIGH power factor correction has
a SMALL angle in degrees.
© 2018 City and Guilds of London Institute. All rights reserved.
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6.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
Any questions?
© 2018 City and Guilds of London Institute. All rights reserved.
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