21. What is the purpose of taking Capacitance and Tan Delta
Test in
Transformer bushing?
22. What are the protections to be used for Generator?
23. Draw the vector diagram and condition for the
following: 1) Dyn1
2) Ynd0 3) YnYn0
24. What happens when the polarity changes in CT? Explain
briefly?
25. Explain the Term in CT Name Plate – Class: 5P10
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Answer Posted / naresh
Pole slipping,backup protection,differential,dead machine
protection,low forward power,voltage control over
current,current control over voltage,df/dt,if ct polarity
chenge in protection reverse active power flows to relay
and diff current flow and in metering import power wil show
in energy meter,for five times of primary current 10%
composite error.
| Is This Answer Correct ? | 0 Yes | 7 No |
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