appreciated, thank you!
- Please Help As Much As You Can That Would Be Greatly Appreciated Thank You 1 (81.33 KiB) Viewed 27 times
Please help as much as you can! That would be greatly appreciated, thank you!
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answerhappygod
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Please help as much as you can! That would be greatly appreciated, thank you!
Please help as much as you can! That would be greatly
appreciated, thank you!
2. A factory takes the following balanced loads from a 440 V, 3-phase, 50-Hz supply: 1. Lighting load of 20 kW. 2. A continuous motor load of 30 kVA at 0.5 pf lagging. 3. An intermittent welding load of 30 kVA at 0.5 pf lagging. (a) Without the capacitor: (ii) Calculate the motor load current, Im (iv) Calculate the total current of the factory, If. (i) Calculate the lighting load current, IL. (iii) Calculate the welding load current, Iw. (b) (i) Calculate the total real power of the factory, P. (ii) Calculate the total reactive power of factory, Q. (iii) Calculate the total apparent power of factory, S. (iv) Calculate the power factor of factory. (v) Is power factor of factory lagging or leading? (c) (i) Calculate the kVA rating of the capacitor bank required to improve the power factor of loads (1) and (2) together to unity power factor with load (3) switched off. (ii) Give also the value of the capacitor required in each phase if a star-connected bank is employed. (iii) Calculate capacitor current Ic. (iv) Calculate the new total current of the factory Ifnew- (v)Calculate the new total reactive power of factory Onew (vi) Calculate the new total apparent power of factory Snew (d) What is the new overall power factor if, after the correction has been applied in (c)(i), the welding load is switched on.
appreciated, thank you!
2. A factory takes the following balanced loads from a 440 V, 3-phase, 50-Hz supply: 1. Lighting load of 20 kW. 2. A continuous motor load of 30 kVA at 0.5 pf lagging. 3. An intermittent welding load of 30 kVA at 0.5 pf lagging. (a) Without the capacitor: (ii) Calculate the motor load current, Im (iv) Calculate the total current of the factory, If. (i) Calculate the lighting load current, IL. (iii) Calculate the welding load current, Iw. (b) (i) Calculate the total real power of the factory, P. (ii) Calculate the total reactive power of factory, Q. (iii) Calculate the total apparent power of factory, S. (iv) Calculate the power factor of factory. (v) Is power factor of factory lagging or leading? (c) (i) Calculate the kVA rating of the capacitor bank required to improve the power factor of loads (1) and (2) together to unity power factor with load (3) switched off. (ii) Give also the value of the capacitor required in each phase if a star-connected bank is employed. (iii) Calculate capacitor current Ic. (iv) Calculate the new total current of the factory Ifnew- (v)Calculate the new total reactive power of factory Onew (vi) Calculate the new total apparent power of factory Snew (d) What is the new overall power factor if, after the correction has been applied in (c)(i), the welding load is switched on.