What is Switchgear – Explained for Beginners

Question: What do you mean by switchgear?

Answer: The equipment used for switching, controlling, protecting, and isolating electronic equipment.


The Electrical Switchgear is a generic term that represents all components and equipment which is involved in:

  1. Control
  2. Protection
  3. Isolation

Must read: LV Switchgear components

List of components in switchgear:

  1. Annunciator
  2. Bus bar
  3. Circuit breaker
  4. Control Relays
  5. Disconnector
  6. Insulation
  7. Instrumentation transformers
    1. Current transformer
    2. Potential transformer
  8. Metering Equipment
  9. Protection relays

Other Questions:

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  3. Differentiate two types of boilers in thermal power plants
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  5. Explain the pros and cons of Nuclear power plant
  6. How hydroelectric power plants are classified on the basis of head
  7. What is forebay in hydroelectric power plants
  8. What is the role of the regenerator in gas power plants
  9. Why surge tank is built in close conduit Hydroelectric Power Plants
  10. Differentiate base load and peak load power plants
  11. Justify the rated voltage V in MVA breaking capacity of circuit breaker
  12. Types of faults on Power systems
  13. What is breaking capacity of circuit breakers
  14. Why Buchholz relay should only be installed with oil immersed transformers
  15. Why isolator is termed as offload device
  16. Why overload protection is not required in alternators

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