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Example:
A measurement of the voltage and current in
one of the lines in a three phase, delta
connected system read 22 volts and 10 amps.
Determine the phase voltages and phase
currents.
In Delta 
 VL = VP
Therefore the phase voltages are
22 volts
In Delta 
 IL = √ 3 Ip

IL = √ 3 x 10 = 1.732 x 10 = 17.32

Therefore the phase current is 17.3 A

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13.1.3 Calculation Line Phase

  • 1. Example: A measurement of the voltage and current in one of the lines in a three phase, delta connected system read 22 volts and 10 amps. Determine the phase voltages and phase currents.
  • 2. In Delta VL = VP Therefore the phase voltages are 22 volts
  • 3. In Delta IL = √ 3 Ip IL = √ 3 x 10 = 1.732 x 10 = 17.32 Therefore the phase current is 17.3 A