In a power or distribution transformer about 10 per cent end turns are heavily insulated__________?

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TestUstad · Accepted Answer

to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns. A line surge produces a nonuniform voltage distribution in the end turns because of the winding's shunt capacitance, placing excessive stress across them. These turns are therefore heavily insulated to withstand the resulting surge voltage.

TestUstad · Answer

to absorb the line surge voltage and save the winding of transformer from damage

TestUstad · Answer

to reflect the line surge and save the winding of a transformer from damage

TestUstad · Answer

none of the above

In a power or distribution transformer about 10 per cent end turns are heavily insulated__________?

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