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3-phase WYE example

Course: EE 369, Fall 2010
School: Mohawk
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Word Count: 139

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Industrial EE369 Automation 3-phase Wye System basics THREE PHASE BALANCED Y-CIRCUIT Given loads: Phase (A)=25 0 Phase (B)=25 0 Phase (C)=25 0 Line voltage = 600 Volts Phase sequence: ABC Using VBC as the reference, calculate all the voltages and currents. VAB=600 +120 Volts VBC=600 0 Volts VCA=600 -120 Volts VAN=347 90 Volts VBN=347 -30 Volts VCN=347 -150 Volts ILA=347 90 V 25 0 = 13.88 90 A ILB=347 -30 V...

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Industrial EE369 Automation 3-phase Wye System basics THREE PHASE BALANCED Y-CIRCUIT Given loads: Phase (A)=25 0 Phase (B)=25 0 Phase (C)=25 0 Line voltage = 600 Volts Phase sequence: ABC Using VBC as the reference, calculate all the voltages and currents. VAB=600 +120 Volts VBC=600 0 Volts VCA=600 -120 Volts VAN=347 90 Volts VBN=347 -30 Volts VCN=347 -150 Volts ILA=347 90 V 25 0 = 13.88 90 A ILB=347 -30 V 25 0 = 13.88 -30 A ILC=347 -150 V 25 0 = 13.88 -150 A IN=ILA+ILB+ILC=0 0 A THREE UNBALANCED PHASE Y-CIRCUIT Given loads: Phase (A)=15 0 Phase (B)=62 -88 Phase (C)=50 78 VL=208 Volts Phase sequence: ABC Using VAN as the reference, calculate all the voltages and currents. VAN=120 0 Volts VBN=120 -120 Volts VCN=120 -240 Volts VAB=208 30 Volts VBC=208 -90 Volts VCA=208 -210 Volts 1 EE369 Industrial Automation 3-phase Wye System basics ILA=120 0 V 15 0 = 8.0 0 A ILB=120 -120 V 62 -88 = 1.935 -32.0 A ILC=120 -240 V 50 78 = 2.4 42 A IN=ILA+ILB+ILC=11.4393 2.91 A 2
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Mohawk - EE - 369
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Mohawk - EE - 369
Mohawk - EE - 369
EE369 Industrial Automation Counters Practice Problems 1. Write a PLC program that controls three lights as follows: Pressing a N.O. pushbutton PB1 once turns L1 on and keeps it on Pressing PB1 twice turns L2 on and keeps it on Pressing PB1 three times tu
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EE369 Industrial Automation Quiz 11 PLC Applications Name: _ Date: _Develop a program that will display a 1 minute count-down sequence on a 2-digit 7segment LED display that is wired to an 8-point output card (O:003) when a N.O. pushbutton `Start' is pre
Mohawk - EE - 369
Mohawk - EE - 369
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Mohawk - EE - 369
Mohawk - EE - 369
Using the PLC5 system at your station, design the logic to solve the following problem: Access to a parking lot is to be controlled by a PLC. The parking lot can only hold 50 cars maximum. Agate at the entrance and another gate at the exit control the acc
Mohawk - EE - 369
Mohawk - EE - 369
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Mohawk - EE - 369
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Mohawk - EE - 369
Mohawk - EE - 369
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Mohawk - EE - 369
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Mohawk - EE - 369
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Mohawk - EE - 369
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Mohawk - EE - 369
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Mohawk - EE - 369
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Mohawk - EE - 369
EE369 Industrial Automation Series RLC Problem: A series circuit is shown below. Calculate the total circuit impedance Zt and the voltage across the capacitor, Vc. E = 28V @ 60Hz R = 40 L = 10mH C = 20FSolution: Zt = 134.9 Vc = 27.52 - 72.75 - 17.25 V
Mohawk - EE - 369
Mohawk - EE - 369
Mohawk - EE - 369
Mohawk - EE - 369
Mohawk - EE - 369
Mohawk - EE - 369
Mohawk - EE - 369
Mohawk - EE - 369
Mohawk - EE - 369
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Mohawk - EE - 369
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