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Advantages and Disadvantages of Instrument Transformers:

  • Advantages and Disadvantages of Instrument Transformers:

    Advantages and Disadvantages of Instrument Transformers:

    The advantages of instrument transformers can be as

    1. The normal range voltmeter and ammeter can be used along with these transformers to measure high voltage and currents
    2. The rating of low range meter can be fixed irrespective of the value of high voltage or current to be measured
    3. These transformers isolate the measurement from high voltage and current circuits. This ensures safety of the operator and makes the hanling of the equipments very easy an safe.
    4. These can be used for operating many types of protecting devices such as relays or pilot lights
    5. Several instruments can be fed economically by single transformer


    The only disadvantage of these instrument transformers is that they can be used only for AC circuits and not for DC circuits

    Reference: Electrical Power System Handbook


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