Find the string efficiency if a guard ring increases

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Reference no: EM13291702

Each line of a three phasesystem is suspended by a string of three identical insulators ofself capacitance C farads. The shunt capacitance of metal work ofeach insulator is 0.26C to earth and 0.15C to line. Find the stringefficiency if a guard ring increases the shunt capacitance to lineof the metal work of the lowest insulator to 0.35C.

Reference no: EM13291702

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