TASK 3-Y-Y Three phase system The circuit in Figure 1 is a balanced three phase system which has the following parameters: Parameter name Voltage source A with ground as reference Voltage source B with ground as reference Voltage source C with ground as reference Frequency Resistor 1,2,3 Capacitor 1,2,3 Vbn Variable Van Vbn Ven R1, R2, R3 C1, C2, C3 Figure 1 Unit M M [M] [Hz] [S2] [μF] CI m 3 You are given the following parameter values: Constant Van-220*√2/0° Von" 220" và/2400 Vcn-220* √2/120° f-50 4 Randomized R1, R2, R3-111 C1, C2, C3-70,4 Since this is a balanced system the current's magnitude (i.e. its amplitude and rms value) will be the same in each line. Calculate the rms value of the line current and check the result with LTSpice. Answer in [A] with two decimals. Skriv in ditt svar... You are given the following parameter values: Constant D

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The load current in a system is 100 A. the short-circuit current for the smallest fault is     100 A. An overcurrent capable of carrying a current of 5 A continuously is to be used. (a) Suggest a suitable C.T. ratio                  (b) What will be the current for the smallest fault?            (c) Will the protective C.T be able to faithfully reproduce the fault current?