Neutral wire break

Given
neutral wire break

Il = 380 V

Za = 10 ohm

Z = j10 Ohm

Zс = -j10 Ohm

Determine the currents in the receiver phases

Calculation of the phase voltages of the source



Calculation of neutral bias voltage



Calculation of voltages on the receiver phases



Calculation of currents in the phases of the receiver



The sum of the currents is 0

Triangle inclusion example

Given

Determine the currents in the phases of the receiver and in the lines

The phase voltages of the receiver are equal to the corresponding linear voltages of the power supply:

phase currents:

The currents in the phases are determined by Ohm’s law:

Line currents are determined by phase currents according to the first Kirchhoff law:

The sum of the line currents is 0