3-phase Delta example

3-phase Delta example - a) For an ABC phase sequence: V AB...

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EE369 – Industrial Automation Delta System Examples THREE PHASE DELTA – BALANCED LOADS Per phase impedance=50 80 ° Line voltage: 480 Volts Frequency: 60 Hz Phase sequence: ABC Reference is V BC Calculate phase currents, line currents, and total apparent power. a) For an ABC phase sequence: V AB =480 120 Volts V BC =480 0 ° Volts V CA =480 -120 ° Volts b) I AB =480 120 ° V ÷ 50 80 ° = 9.60 40 ° A I BC =480 0 ° V ÷ 50 80 ° = 9.6 -80 ° A I CA =480 -120 ° V ÷ 50 80 ° = 9.6 160 ° A c) I LA =I AB -I CA =16.627 10 ° A I LB =I BC -I AB =16.627 -110 I LC =I CA -I BC =16.627 130 ° A d) S T = 3 x 480 V x 16.627 A = 13.82343 kVA THREE PHASE DELTA – UNBALANCED LOADS Phase AB=40 0 ° Phase BC=60 0 ° Phase CA=100 0 ° Line voltage: 600 Volts Frequency: 60 Hz Phase sequence: ABC Reference is V BC Calculate phase currents, line currents and total real power.
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Unformatted text preview: a) For an ABC phase sequence: V AB =600 120 Volts V BC =600 Volts V CA =600 -120 Volts b) I AB =600 120 V 40 = 15 120 A I BC =600 V 60 = 10 A I CA =600 -120 V 100 = 6 -120 A c) I LA =I AB-I CA =18.7349 103.89 A I LB =I BC-I AB =21.7945 -36.59 A I LC =I CA-I BC =14 -158.21 A d) P AB =600 120 V x 15 120 A = 9 -120 kW P BC =600 A x 10 A = 6 kW P CA =600 -120 V x 6 -120 A = 3.6 120 kW P T =P AB +P BC +P CA =18.6 kW 2...
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3-phase Delta example - a) For an ABC phase sequence: V AB...

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