Question 3 A 400A 380V cable supply with wire resistance 0.03 ohm and supply impedance 0.01 ohm before the main switch.

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Question 3 A 400A 380V cable supply with wire resistance 0.03 ohm and supply impedance 0.01 ohm before the main switch.

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Question 3 A 400a 380v Cable Supply With Wire Resistance 0 03 Ohm And Supply Impedance 0 01 Ohm Before The Main Switch 1
Question 3 A 400a 380v Cable Supply With Wire Resistance 0 03 Ohm And Supply Impedance 0 01 Ohm Before The Main Switch 1 (28.58 KiB) Viewed 55 times
Question 3 A 400A 380V cable supply with wire resistance 0.03 ohm and supply impedance 0.01 ohm before the main switch. Evaluate: a) The 3 phase short circuit fault level immediate after the switch (2 marks) b) The earth fault level after the switch if the wire resistance and earth resistance are 0.05 ohm and 0.6 ohm respectively. (2 marks) c) The breaking capacity of the main switch and justify if earth fault relay required. (1 mark)
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