POLYPHASE CIRCUITS. LEARNING GOALS. Three Phase Circuits Advantages of polyphase circuits. Three Phase Connections Basic configurations for three phase circuits. Source/Load Connections Delta-Y connections. Power Relationships Study power delivered by three phase circuits.
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Three Phase Circuits
Advantages of polyphase circuits
Three Phase Connections
Basic configurations for three phase circuits
Study power delivered by three phase circuits
Power Factor Correction
Improving power factor for three phase circuits
Vab = | Vab | 0
Vbc = Vab -120
Vca = Vab -240
For a balanced three phase circuit the instantaneous power is constant
SUBTRACT THE FIRST TWO THEN ADD
TO THE THIRD TO GET Ra
Similar to single phase case.
Use capacitors to increase the
Keep clear about total/phase
power, line/phase voltages
To use capacitors this value
should be negative
Proposed new store
Wire is OK