A 500 kVA load has a power factor of 90% lagging and is supplied by a 480 V source
A 500 kVA load has a power factor of 90% lagging and is supplied by a 480 V source. Determine the three line currents.
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A 500 kVA load has a power factor of 90% lagging and is supplied by a 480 V source
A three-phase positive sequence Y-connected source supplies 14 kVA with a power factor of 0.75 lagging...
A three-phase positive sequence Y-connected source supplies 14 kVA with a power factor of 0.75 lagging to a parallel combination of a Y-connected load and a A-connected load. The Y-connected load uses 9 kVA at a power factor of 0.6 lagging and has an a-phase current of 102-30° A. a) Find the complex power per phase of the A-connected load. b) Find the magnitude of the line voltage.
A 3-φ Y connected source supplies 12 kVA with a power factor of 0.8 lagging to a parallel
A 3-φ Y connected source supplies 12 kVA with a power factor of 0.8 lagging to a parallel combination of a Y load and a Δ load. If the Y load consumes 5.6 kVA at a power factor of 0.75 lagging and has phase-a current of 8 Arms and the angle of the current is -30°, determine the phase impedance of the Δ load. Real part of the impedance of the Δ load in Ohms: Imaginary part of the impedance of the...
3- Two balanced Y-connected loads in parallel, one drawing 25 kW at 0.6 power factor lagging...
3- Two balanced Y-connected loads in parallel, one drawing 25 kW at 0.6 power factor lagging and the other drawing 15 kVA at 0.8 power factor leading, are supplied by a balanced, three-phase, 480-volt source. (a) Draw the power triangle for each load and for the combined load. (b) Determine the power factor of the combined load and state whether lagging or leading. (c) Determine the magnitude of the line current from the source. (d) ∆- connected capacitors are now...
A 220 kW load having 0.8 lagging power factor is supplied from a 600 V (line...
A 220 kW load having 0.8 lagging power factor is supplied from a 600 V (line to line) three-phase supply. A bank of power factor capacitors is delta connected. (a) Draw neat schematic diagram showing the connection of the capacitor bank in Delta connection. (b) Determine the KVAR rating of each individual capacitor needed to bring power factor to 0.9. (c) Determine the capacitance of each capacitor in uF.
Item 6 A three-phase supples 17 kVA with a power factor of 0.75 lagging to a...
Item 6 A three-phase supples 17 kVA with a power factor of 0.75 lagging to a sequence Y-connected source Part A parallel combination of a Y-connected load and a ? connected load The Y-connected load uses 12 kVA at a power factor of 0 6 lagging and has an a-phase current of 122-30 A Find the complex power per phase of the ?-connected load Enter your answer using polar notation. Express argument in degrees. VA Submit Part B Find the...
1. A 500kW 0.75 lagging load is supplied from a power source at 20 kV through...
1. A 500kW 0.75 lagging load is supplied from a power source at 20 kV through a transformer (630 kVA, 20/0.4 kV ), a circuit breaker and cables. The length of the line is 5 km. ( electrical conductivity of copper is 56 m/ohm.mm2 ) a. Find the apparent power supplied from the transformer by considering the losses on the line. (10 pts) b. Is there any problem with the system? Explain. (10 pts) c. To improve the load power...
Problem 11.24 A three-phase positive sequence Y-connected source supplies 15 kVA with a power factor of...
Problem 11.24 A three-phase positive sequence Y-connected source supplies 15 kVA with a power factor of 0.75 lagging to a parallel combination of a Y-connected load and a A-connected load. The Y-connected load uses 9 kVA at a power factor of 0.6 lagging and has an a-phase current of 122-20° A. Part A Find the complex power per phase of the A-connected load. Enter your answer using polar notation. Express argument in degrees. 10 AP u vec mo ? SA...
Given: A 12.5 kV circuit has a load of 8000 kVA with a lagging power factor...
Given: A 12.5 kV circuit has a load of 8000 kVA with a lagging power factor of 0.8. Required: How much capacitive reactive power is needed to correct the power factor to 0.92 lagging? Solution: Q= O kVAR's
A 220 kW load having 0.8 lagging power factor is supplied from a 600 V (line to line) three-phase...
A 220 kW load having 0.8 lagging power factor is supplied from a 600 V (line to line) three-phase supply. A bank of power factor capacitors is delta connected Q2. (a) Draw neat schematic diagram showing the connection of the capacitor bank in Delta connection. (b) Determine the kVAR rating of each individual capacitor needed to bring power factor to 0.9 (c) Determine the capacitance of each capacitor in μF.
For the 480 V, 900 kVA ABB AMG0400 synchronous generator (specifications) operating at 480 V, 900...
For the 480 V, 900 kVA ABB AMG0400 synchronous generator
(specifications) operating at 480 V, 900 kVA and 0.9 lagging power
factor, calculate:
a. The internal voltage (answer: 310 V)
b. The power lost in the windings. (12.3 kW)
For the 480 V, 900 kVA ABB AMG0400 synchronous generator Ģpecifications) operating at 480 V,900 kVA and 0.9 lagging power factor, calculate: a. The internal voltage (answer: 310 V) b. The power lost in the windings. (12.3 kW) Notes: For the...
A three-phase positive sequence Y-connected source supplies 14 kVA with a power factor of 0.75 lagging to a parallel combination of a Y-connected load and a A-connected load. The Y-connected load uses 9 kVA at a power factor of 0.6 lagging and has an a-phase current of 102-30° A. a) Find the complex power per phase of the A-connected load. b) Find the magnitude of the line voltage.
A 220 kW load having 0.8 lagging power factor is supplied from a 600 V (line to line) three-phase supply. A bank of power factor capacitors is delta connected. (a) Draw neat schematic diagram showing the connection of the capacitor bank in Delta connection. (b) Determine the KVAR rating of each individual capacitor needed to bring power factor to 0.9. (c) Determine the capacitance of each capacitor in uF.
Item 6 A three-phase supples 17 kVA with a power factor of 0.75 lagging to a sequence Y-connected source Part A parallel combination of a Y-connected load and a ? connected load The Y-connected load uses 12 kVA at a power factor of 0 6 lagging and has an a-phase current of 122-30 A Find the complex power per phase of the ?-connected load Enter your answer using polar notation. Express argument in degrees. VA Submit Part B Find the...
Problem 11.24 A three-phase positive sequence Y-connected source supplies 15 kVA with a power factor of 0.75 lagging to a parallel combination of a Y-connected load and a A-connected load. The Y-connected load uses 9 kVA at a power factor of 0.6 lagging and has an a-phase current of 122-20° A. Part A Find the complex power per phase of the A-connected load. Enter your answer using polar notation. Express argument in degrees. 10 AP u vec mo ? SA...
Given: A 12.5 kV circuit has a load of 8000 kVA with a lagging power factor of 0.8. Required: How much capacitive reactive power is needed to correct the power factor to 0.92 lagging? Solution: Q= O kVAR's
For the 480 V, 900 kVA ABB AMG0400 synchronous generator
(specifications) operating at 480 V, 900 kVA and 0.9 lagging power
factor, calculate:
a. The internal voltage (answer: 310 V)
b. The power lost in the windings. (12.3 kW)
For the 480 V, 900 kVA ABB AMG0400 synchronous generator Ģpecifications) operating at 480 V,900 kVA and 0.9 lagging power factor, calculate: a. The internal voltage (answer: 310 V) b. The power lost in the windings. (12.3 kW) Notes: For the...
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