Question

Which of the following types of transformer is used to separate equipment from the source of power?
1. Current transformers
2. Voltage transformers
3. Power transformers
4. Isolation transformers

Answer 1

Correct Answer - Option 4 : Isolation transformers
Isolation Transformer:

• An isolation transformer is a transformer used to transfer electrical power from a source of alternating current (AC) power to some equipment or device while isolating the powered device from the power source
• Isolation transformers provide galvanic isolation and are used to protect against electric shock, to suppress electrical noise in sensitive devices, or to transfer power between two circuits that must not be connected
• Isolation transformers block transmission of the DC component in signals from one circuit to the other but allow AC components in signals to pass
• Transformers that have a ratio of 1 to 1 between the primary and secondary windings are often used to protect secondary circuits and individuals from electrical shocks between energized conductors and earth ground

 

Solution:

Isolation transformer is used to separate equipment from the source of power.