Transformer protection and testing procedures Quiz
easy
5 Questions
Question 1 of 5
Which protection device is primarily used to detect overcurrents in a transformer?
Overcurrent relays detect current exceeding a set limit, protecting against overloads and short circuits.
Question 2 of 5
What is the primary function of a Buchholz relay in a transformer?
Buchholz relays sense gas and oil surge due to internal faults, providing early warning or tripping.
Question 3 of 5
Which test is used to determine the turns ratio of a transformer?
Turns ratio tests verify the design turns ratio and check for winding integrity.
Question 4 of 5
What does a high insulation resistance value in a transformer indicate?
High insulation resistance indicates the insulation can withstand the applied voltage.
Question 5 of 5
Which of the following tests is used to assess the condition of transformer oil?
DGA analyzes gases dissolved in oil, indicating potential internal faults like arcing or overheating.
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