Question 11
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A distance relay protects 80% of a line in zone 1. The line
impedance is 0.23 + j 0.28 Ohms/km and is 218 km long. The
relay has a quadrilateral characteristic. Each point of the trip region
on r,x plane is defined by an ordered pair. Two points are the
origin (0,0) and (10,0). A reasonable choice for the other two points
is:
question
Select one:
a. (35.10, 61.04) and (50.14, 61.04)
b. (15.04, 24.42) and (20.06, 30.52)
c. (20.06, 30.52) and (25.07, 36.62)
d. (35.10, 48.83) and (45.13, 48.83)