Protective Relays and Buccholz Relay
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Questions and Answers

Which type of relay can detect faults as they develop?

  • EHV relay
  • Buccholz relay (correct)
  • Protective relay
  • Reclosure relay
  • What is the aim of reclosure in EHV systems?

  • To maintain stability of the system (correct)
  • To detect incipient faults
  • To prevent electrical faults
  • To maintain continuity of supply
  • In low voltage systems, how many reclosures are allowed?

  • One
  • Three (correct)
  • Two
  • Four
  • Study Notes

    Relay Types

    • Digital relays can detect faults as they develop, providing early warning and allowing for prompt action to prevent damage.

    Reclosure in EHV Systems

    • The aim of reclosure in EHV (Extra High Voltage) systems is to re-energize the circuit as quickly as possible after a fault has been detected and cleared.

    Reclosure in Low Voltage Systems

    • In low voltage systems, up to two reclosures are allowed before the circuit is locked out.

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    Description

    Test your knowledge on protective relays and their ability to detect and mitigate electrical faults. Learn about the unique capabilities of the Buccholz relay in detecting incipient faults. Explore the different types of faults and their development in transformer tanks and low voltage systems.

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