W
wade88
Hi guys,
Looked over some previous posts and done some further reading, and attempted the calcs, just want to check that i am not miles off the ball park here with this. From what i have read harmonics and current down the neutral will cause massive fluctuations in results not to mention unbalanced phases but i would just like to get a broad figure so i have reference.
Cable run is 50 meters, 4 core SWA 25mm, clipped direct, 105 amps per phase.
Calculation i have been going on is:
mV/A/m x length x load / 1000 to find the approximate single phase volt drop in this circuit
and then multiply by 0.866 to take account for any current in the neutral
so im getting:
1.5 x 50 x 105/1000 = 7.875 x 0.866 = 6.81Volts.
Any one free to confirm they get similar results. Or have i missed an important part of the 3 phase calc process here.
Thanks guys
Looked over some previous posts and done some further reading, and attempted the calcs, just want to check that i am not miles off the ball park here with this. From what i have read harmonics and current down the neutral will cause massive fluctuations in results not to mention unbalanced phases but i would just like to get a broad figure so i have reference.
Cable run is 50 meters, 4 core SWA 25mm, clipped direct, 105 amps per phase.
Calculation i have been going on is:
mV/A/m x length x load / 1000 to find the approximate single phase volt drop in this circuit
and then multiply by 0.866 to take account for any current in the neutral
so im getting:
1.5 x 50 x 105/1000 = 7.875 x 0.866 = 6.81Volts.
Any one free to confirm they get similar results. Or have i missed an important part of the 3 phase calc process here.
Thanks guys