Question

5- What is meant by each of the PSM, Slu nuip Question 2-(5 Marks TSMS For the given redial system, calculate the-Ru Required CTs ratio of the system to achieve the relay coordination and the time multiplier E Thre-phase io ZgBe Bus B Bus C CT ns setting of each relay. Rp is to protect section ,ey aby層 BC while RA is its back-up and primary protect section AB. Draw the variation oftheI maximum fault current against the fault locations. Assume that CSM is 125% and the CB-1- ALL time is 0.5 Sec. Assume the proper parameters l /w-S00A 1-一3500411-1 004 100 A Bus C 4000 A2000A 1000

Answer 1