[BEST] Applications, Advantages, Disadvantages of Isolation Transformer

The Isolation Transformer is a specially designed transformer which is used to isolate two different electrical circuits. The Isolation Transformer is mainly used to isolate the load or powered device from the power supply. Here you will know the Applications, Advantages, Disadvantages of Isolation Transformer.

The transformer has two windings one is primary winding and another is Secondary winding. There is no electrical connection between the primary and secondary winding. The transformer transforms power from the primary winding to secondary winding in the principle of electromagnetic induction. As there is no electrical connection between the two windings so the transformer can be used for isolation purpose.

Isolation Transformer Applications

1. The main application of Isolation Transformer is, to make the isolation between a power supply and a powered circuit or powered device for the safety purpose.

2. Isolation Transformer is used to transform electrical power between two circuits which are not connected electrically to each other. Those two circuits are may have the same voltage level or different voltage level.

3. Isolation transformers are can be used as Pulse Transformer.

4. Isolation transformers are used for computer network design. Here isolation transformer act as Pulse Transformer.

5. Sometimes the Isolation Transformer used in electrical circuits as well as an electronic circuit to provide protection against Electrical shock.

6. Isolation transformers are also used in electronic circuits as well as electrical circuits and some sensitive device to reduce electrical noise.

7. Isolation Transformer is used to block ground loop interference in a circuit.

8. The isolation transformer is used in power supply circuits in sensitive devices such as Computer, Oscilloscope, Medical Devices

9. Isolations Transformers are used in electrical and electronic testing devices.

10. Isolation transformers are used in communication circuits and Radars.

Advantages of Isolation Transformer

Some advantages of Isolation Transformer given below. 

1. Isolation Transformer can work at High Frequency, that is why it is also used as a pulse transformer.

2. Isolation Transformer can be used for very high voltage isolation.

3. High efficiency.

Disadvantages of Isolation Transformer

Some Disadvantages of Isolation Transformer are given below.

1. When the Isolation Transformer operating as Pulse Transformer and it operate at low frequency there is distortion produces in secondary or output waveform.

2. When isolation transformer operating at DC pulse signal, the saturation property of the core reduces.

3. Isolation Transformer specially designed, that is why it is costlier than a normal transformer.

How Isolation Transformer Provide Protection against Electrical Shock?

We know that in our electrical generation, transmission, and distribution system neutral is connected to the ground. So when a person touches phase or live wire standing on the ground, then the person will be shocked. Because in this case, the current flowing through the body to the ground and complete the circuit.

As you see in the above figure, a person touched the live wire and the current flowing through the body of the person, therefore, the person gets an electric shock.

If we connect an Isolation transformer which has the turns ratio 1:1 then we will get the output voltage same as the input voltage. But as the windings of the transformer are not electrically connected, so there is a no chance of electrical shock because of the absent of the Ground.

As you see in the above figure the person touched the output terminal of the isolation transformer but he does not get any electrical shock because he completely isolated from the main supply by the isolation transformer.

Read Also:

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• Why Current, Voltage changes But Power, Frequency constant in Transformer?
• Which side of Transformer is provided for Tapping and Why?All reasons explained.
• [Three Reasons] Why Transformer is Rated in KVA - Full Explained
• Why Three Phase Induction Motor Self-Starting but Synchronous Motor not?
• Why DC is used not AC for excitation of Synchronous Alternator and Motor?

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