A balanced delta connected 3 phase load with per phase impedance
of
Z1 = 3 + j9 (Ohm)
is connected in parallel to a balanced 3 phase star connected load
with per phase impedance:
Z2 = 6 + j16 (Ohm).
Their connection is shown in the Picture attached. This load
combination is connected to a balanced 3 phase 415V (line-to-line)
supply.
Find the magnitude of the line current drawn from the supply. Enter
your results in Amps with one digit after decimal point 
Homework Answers
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A balanced delta connected 3 phase load with per phase impedance
of
Z1 = 3 +...
1. A balanced delta-connected load has 12 +j16 ohms impedance per phase, and is energized by...
1. A balanced delta-connected load has 12 +j16 ohms impedance per phase, and is energized by 208 V line-to-line. The phase sequence is ‘a-b-c'. (a) Find the line and phase voltages and currents at the delta load, and show them in a phasor diagram. (b) If the delta-connected load is rewired and connected in wye, show the line and phase voltages and currents at the wye load in a phasor diagram.
Given a balanced three phase delta connected load with impedance 3+j6 what is impedance equivalent for...
Given a balanced three phase delta connected load with impedance 3+j6 what is impedance equivalent for a Y connection?
A balanced delta connected load has a per phase impedance of 12+j21 ohms. The load is...
A balanced delta connected load has a per phase
impedance of 12+j21 ohms. The load is supplied power from a source
with line to line voltage of 480 V through a distribution line. The
line impedance is 2 + j4.5 ohms. What is the current magnitude in
the distribution line?
of the below questions. A balanced A connected load has a per-phase impedance of 12+,21 22. The load is supplied power from a source with line-to-line voltage of 480 V...
2. Two balanced three-phase loads are connected in parallel. One load with per phase impedance 21...
2. Two balanced three-phase loads are connected in parallel. One load with per phase impedance 21 ?, is connected in delta, and the other load has per phase impedance 15 2 and is connected in wye. Ignore the line impedance. If the line voltage is a 208230° Vrms, determine (a) the phase voltage for phase-a, ) the line current Ia*, (c) the phase currents in the delta load (d) the complex power of the load and the power factor.
Q2. A three-phase unbalanced delta-connected load containing impedances Z1, Z2 and resistor R3 is connected to...
Q2. A three-phase unbalanced delta-connected load containing impedances Z1, Z2 and resistor R3 is connected to a three-phase power source of 380 V, 50 Hz in positive sequence A-B-C as shown in figure Q2. It is known that line current Ic is 54 292° A. The power consumption of load R3 is 18050 W. The impedance of Zi is 20 -70° 2. By taking VAB as reference, calculate B BB/ Z2 TBC figure Q2 (a) the line voltage VAB, VBC...
A balanced three-phase delta-connected load is connected to a balanced three-phase delta-connected source via a transmission...
A balanced three-phase delta-connected load is connected to a balanced three-phase delta-connected source via a transmission line. The line-line voltage for the source is 100∟0° V/phase and the impedance of load is (27 + j18) Ω/phase. The transmission line has an impedance of (1 + j4) Ω/line. a) Draw the complete schematic of the power system showing the location of wattmeters. (Two-Wattmeter system is considered for this problem). Phase “a” could be considered as a reference phase. b) What must...
b. A delta connected capacitor bank with each phase reactance of 27 ohm is connected in...
b. A delta connected capacitor bank with each phase reactance of 27 ohm is connected in parallel with a balanced three phase load with an impedance of (6-j8) ohm per phase as shown in figure 2. The star point is connected to ground through an impedance of 0 +j5 ohm. Calculate the sequence impedance of the load. (8 marks) 2m0 Figure 2
Three balanced three-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of...
Three balanced three-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of 400+j300 2/0; load 2 is A-connected with an impedance of 2400-j18000/0; and load 3 is 172.8+j2203.2 kVA. The loads are fed from a distribution line with an impedance of 2+j16 0/0. The magnitude of the line-to-neutral voltage at the load end of the line is 2413 kV. Calculate the total complex power at the sending end of the line. :) Magnitude of the total...
1- A balanced delta connected load of 15 + j18 12 per phase is connected at...
1- A balanced delta connected load of 15 + j18 12 per phase is connected at the end of a three-phase line as shown in Figure 1. The line impedance is 1 + j2 12 per phase. The line is supplied from a three-phase source with a line-to-line voltage of 207.85 V rms. Taking the phase voltage Van as reference, determine: a) Current in phase a. b) Total complex power supplied from the source. c) Total complex powers of the...
A balanced delta connected load of 15+?18 Ω per phase is connected at the end of...
A balanced delta connected load of 15+?18 Ω per phase is
connected at the end of a three-phase line as shown in Figure 1.
The line impedance is 1+?2 Ω per phase. The line is supplied from a
three-phase source with a line-to-line voltage of 207.85 V rms.
Taking the phase voltage ??? as reference, determine:
1. Total complex powers of the line and the load.
2.A delta connected capacitor bank is connected in parallel with
the load to improve...
1. A balanced delta-connected load has 12 +j16 ohms impedance per phase, and is energized by 208 V line-to-line. The phase sequence is ‘a-b-c'. (a) Find the line and phase voltages and currents at the delta load, and show them in a phasor diagram. (b) If the delta-connected load is rewired and connected in wye, show the line and phase voltages and currents at the wye load in a phasor diagram.
A balanced delta connected load has a per phase
impedance of 12+j21 ohms. The load is supplied power from a source
with line to line voltage of 480 V through a distribution line. The
line impedance is 2 + j4.5 ohms. What is the current magnitude in
the distribution line?
of the below questions. A balanced A connected load has a per-phase impedance of 12+,21 22. The load is supplied power from a source with line-to-line voltage of 480 V...
2. Two balanced three-phase loads are connected in parallel. One load with per phase impedance 21 ?, is connected in delta, and the other load has per phase impedance 15 2 and is connected in wye. Ignore the line impedance. If the line voltage is a 208230° Vrms, determine (a) the phase voltage for phase-a, ) the line current Ia*, (c) the phase currents in the delta load (d) the complex power of the load and the power factor.
Q2. A three-phase unbalanced delta-connected load containing impedances Z1, Z2 and resistor R3 is connected to a three-phase power source of 380 V, 50 Hz in positive sequence A-B-C as shown in figure Q2. It is known that line current Ic is 54 292° A. The power consumption of load R3 is 18050 W. The impedance of Zi is 20 -70° 2. By taking VAB as reference, calculate B BB/ Z2 TBC figure Q2 (a) the line voltage VAB, VBC...
b. A delta connected capacitor bank with each phase reactance of 27 ohm is connected in parallel with a balanced three phase load with an impedance of (6-j8) ohm per phase as shown in figure 2. The star point is connected to ground through an impedance of 0 +j5 ohm. Calculate the sequence impedance of the load. (8 marks) 2m0 Figure 2
Three balanced three-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of 400+j300 2/0; load 2 is A-connected with an impedance of 2400-j18000/0; and load 3 is 172.8+j2203.2 kVA. The loads are fed from a distribution line with an impedance of 2+j16 0/0. The magnitude of the line-to-neutral voltage at the load end of the line is 2413 kV. Calculate the total complex power at the sending end of the line. :) Magnitude of the total...
1- A balanced delta connected load of 15 + j18 12 per phase is connected at the end of a three-phase line as shown in Figure 1. The line impedance is 1 + j2 12 per phase. The line is supplied from a three-phase source with a line-to-line voltage of 207.85 V rms. Taking the phase voltage Van as reference, determine: a) Current in phase a. b) Total complex power supplied from the source. c) Total complex powers of the...
A balanced delta connected load of 15+?18 Ω per phase is
connected at the end of a three-phase line as shown in Figure 1.
The line impedance is 1+?2 Ω per phase. The line is supplied from a
three-phase source with a line-to-line voltage of 207.85 V rms.
Taking the phase voltage ??? as reference, determine:
1. Total complex powers of the line and the load.
2.A delta connected capacitor bank is connected in parallel with
the load to improve...
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