Dear All,

I have a three phase circuit for my workshop which consists of -
1) One three phase motor in delta configuration which is of 0.75 kW (power factor -0.9)
2) One three phase transformer (500 MVA converting 415 V to 24 V)
3) Two 60 watt bulbs on Red phase (power factor -1)
4) Two 70 watt fans on Yellow phase (power factor -0.9)
5) One AC on Blue phase (2400 watt, power factor - 0.8)

The supply voltage (line to line) is 415 V

I want to know how much current is being drawn in each phase.
I am not sure but although the load is unbalanced, however it may be the voltage is balanced. The 415 volt power supply is from electricity company.

 

Hi zac
Welcome to AAC.
As this is college work, please post your best attempt at answering, we then can help you.
E

 

Hi zac
Welcome to AAC.
As this is college work, please post your best attempt at answering, we then can help you.
E

Hi this for a project and I need to determine the phase currents through calculation rather than by clamp / multimeter. This phase currents will be compared to the ampacity of cables to check the minimum size of cable required for value engineering. What I am thinking is taking out total VA (apparent power ) on each phase and then dividing by phase voltage but I am not sure.