In: Electrical Engineering
Q1:A high voltage Schering Bridge has the following arms with their
component ranges: AB: capacitor=100 pF to 500 pF, BC: variable
capacitance (1 nF to 2 µF) in parallel with variable resistance
from (100 Ω to 1000 Ω), CD: variable resistance from (1 Ω to 1000
Ω), DA: test object. Determine:
(a) the maximum value of the capacitance of the bushing,
(b) the minimum value of the capacitance of the bushing
(c) the loss angle of the bushing if balance is obtained with capacitance of the bushing is 200pF, R4=1000Ω, C4=10nF with a high voltage capacitor having maximum value
(d) in this question, what is the difference between
the bushing and the test object