Question #168241

3 equal coils of inductive reactance 30 ohms and resistance 40 ohms are connected in Star to a 3 phase supply of line voltage 400 volts. CALCULATE the line Current and the Total Power

Expert's answer

"Z_p=\\sqrt{30^2+40^2}=50\\ (\\Omega)"

"V_p=400\/\\sqrt{3}=231\\ (V)"

"I_L=I_p=V_p\/Z_p=231\/50=4.62\\ (A)" . **Answer**

"S=\\sqrt3V_LI_L=\\sqrt3\\cdot400\\cdot4.62=3201\\ (W)" .** Answer**

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