Uploaded by Angel Pat Lucas

CAPACITANCE

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1. Find the capacitive susceptance per mile of a single-phase line operating at 60 Hz. The conductor is DRAKE , and
spacing is 20 ft between centers.
2. A three phase TL has flat horizontal spacing with 2 meters between adjacent conductors. At a certain instant the
charge on one of the outside conductors is 60uC/Km and the charge on the center conductor and on the other outside
conductor is -30uC/Km. the radius of each conductor is 0.9 cm. neglect the effect of the ground and find the voltage
drop between the two identically charged conductor at the instant specified.
3. Calculate the capacitance to neutral per meter of a single phase line composed of two single conductor having a
diameter of 0.229 inch. The conductors are 10 ft apart and 25 feet above the ground.
4. A three phase 60hz line has flat horizontal spacing. The conductors have an outside diameter of 3.28 cm with 12 m
between conductors. Determine the capacitive reactance to neutral in ohm-meter and the capacitive reactance of the
line in ohms if its length is 130 miles.
a. Assume negligible ground effect
b. If ground effect is considered if the conductor isplaced 20m from the ground
5. determine the capacitance and charging current per Km of the 460Kv line using two bundle conductor per phase. The
diameter of each conductor is 5cm
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