Buccholz relay is essential for protection against transformer’s ______?

How Does Buccholz Relay Help to Protect From the inner-turn fault of Transformer?

• Buchholz relay is a type of oil and gas actuated relay that is typically employed as a protection device in big oil-absorbing transformers.
• When an electrical gadget experiences a minor malfunction, the fault currents produce heat.
• The heated air creates gas and oil bubbles that cause electrical equipment to deteriorate.
• These gas bubbles are upwardly directed and gather inside the Buchholz relay.
• The oil in the Buchholz relay is moved by the collected gas, so the displacement is equal to the volume of gas collected.
• The higher float shuts the higher mercury switch, connecting an alert circuit due to the displacement of oil.
• Consequently, when a little error occurs, the alarm will go off; The amount of gas that was collected indicates the degree of the defect.
• Distinct sorts of defects have different types of oil flow, making it simple to identify a fault and take the appropriate response.

Summary:

Buccholz relay is essential for protection against transformer’s __. (A) inner-turn fault (B) HT and LT fault (C) earth-fault (D) series fault

Buccholz relay is essential for protection against the transformer’s inner-turn fault. From the above option, candidates should choose option A. For the right answer.