#2 (20 pts): A protective relay with the given curve below provides protection for a system subject to 6000 A, 3- phase

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2 20 Pts A Protective Relay With The Given Curve Below Provides Protection For A System Subject To 6000 A 3 Phase 1 (133.47 KiB) Viewed 24 times

#2 (20 pts): A protective relay with the given curve below provides protection for a system subject to 6000 A, 3- phase bolted fault current. For a multiple of tap setting of 4, determine the following: 1. Relay time dial setting in order to operate in 3 - seconds. I Relay current pickup value Typical time curves type CO-7 overcurrent relay 50-60 cycles Current tap settings 4. 5. 6. 7. 8. 10.12 amperes -Time dial setting Operating time (ec) 5 6 7 8 9 10 12 14 16 18 20 Current as a multiple of tap setting