Lesson Notes By Weeks and Term v4 - SHS 3
ELECTRICAL SYSTEMS DESIGN
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ELECTRICAL SYSTEMS DESIGN
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Subject: Applied Technology
Class: SHS 3
Term: 2nd Term
Week: 11
Grade code: 2.4.1.LI.8
Strand code: 4
Sub-strand code: 1
Content standard code: 2.4.1.CS.1
Indicator code: 2.4.1.LI.8
Theme: ELECTRICAL AND ELECTRONIC TECHNOLOGY
Subtheme: ELECTRICAL SYSTEMS DESIGN
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Welcome, future engineers and technicians! Today, we are looking at a very important characteristic of transformers called Voltage Regulation. Think about the transformers you see in your communities, the big green or grey boxes on poles that belong to the Electricity Company of Ghana (ECG). Their job is to provide a steady voltage to our homes and businesses. But does the voltage stay perfectly constant? No. It changes depending on how much electricity we are using. Voltage regulation tells us *how well* a transformer can maintain a constant voltage as the load changes.
This section breaks down everything you need to know about voltage regulation. a) Definition of Voltage Regulation
In simple terms, voltage regulation is a measure of the change in the secondary terminal voltage of a transformer from a "no-load" condition (when nothing is connected to it) to a "full-load" condition (when it is supplying its maximum rated power).
It is usually expressed as a percentage of the full-load voltage.
The Formula: