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  • Basics
    • Charge
    • Voltage
    • Current
    • Resistance
    • Capacitance
    • Inductance
    • Conductance
    • Power
    • Energy
    • Electromagnetic Induction
    • AC Basics
      • AC Basics
      • Real Power
      • Reactive Power
      • Complex and apparent Power
  • Circuit Theory
    • Electric Circuit
    • Series and Parallel Connections
    • Faraday’s law
    • Lenz’s law
    • Ohm’s Law
    • Kirchoff’s Laws
    • Voltage Division
    • Current Division
    • Thevenin’s Theorem
    • Norton’s Theorem
    • Maximum Power transfer theorem
    • Superposition theorem
  • Machines
    • Transformers
      • Transformer Action
      • Ideal Transformer
      • EMF equation
      • Equivalent circuit and Phasor diagram
      • Voltage regulation
      • Parts of a transformer
      • Transformer tresting
      • Load losses and No-load losses
      • Types
        • Core type and shell type transformers
      • Magnetization current
      • Magnetization inrush
      • High Leg delta connection
      • Buchholz relay
      • Autotransformer
      • Selection
        • Frequently asked questions-1
        • Frequently asked questions-2
        • Frequently asked questions-3
      • Transformer noise
      • Transformer kVA calculator
      • Transformer turns ratio
  • Power system
  • Switchgears
  • Q&A
  • Articles
  • Tools

What is a short circuit?

A short circuit is a situation in which two or more different lines (having different voltage levels/ different phase/ different terminals) come in contact and finally leads to the flow…

Continue ReadingWhat is a short circuit?

What is Buchholz relay? Why is it used?

Buchholz relays are generally used to sense abnormal conditions occurring inside a transformer. It is a type of oil and gas actuated protection relay. It can be seen in all…

Continue ReadingWhat is Buchholz relay? Why is it used?
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