A
AReynolds
I am attempting to produce a design for a theoretical installation with a three phase incoming supply (presumably Star/Wye with PME to star point), and am having some trouble understanding and determining the current and power of each phase, and the whole installation at the incoming supply.
For example, if L1 has a single phase load of 80A connected to it, L2 has a single phase load of 30A connected to it, L3 has a 40A load connected to it, then is it possible to say that IL1 = 80A, IL2 = 30A and IL3 = 40A, with the current drawn by the whole installation being L1+L2+L3 = 80 + 30 + 40 = 150A?
What would happen if, in addition to the single loads connected to each phase above, a three phase load was connected to L1, L2, L3 and N?
For example, if the three phase load was 16A, does that mean that each line draws 16A, so that you would get L1 = 80 + 16 = 96A? Or is it the case that each line draws about 33% of the stated three phase current, so that L1 = 80 + ((16/100)*33) = 80 + 5.28 = 85.28A?
Am I on the right track with my calculations, or am I mistaken in my approach to these three phase calculations?
For example, if L1 has a single phase load of 80A connected to it, L2 has a single phase load of 30A connected to it, L3 has a 40A load connected to it, then is it possible to say that IL1 = 80A, IL2 = 30A and IL3 = 40A, with the current drawn by the whole installation being L1+L2+L3 = 80 + 30 + 40 = 150A?
What would happen if, in addition to the single loads connected to each phase above, a three phase load was connected to L1, L2, L3 and N?
For example, if the three phase load was 16A, does that mean that each line draws 16A, so that you would get L1 = 80 + 16 = 96A? Or is it the case that each line draws about 33% of the stated three phase current, so that L1 = 80 + ((16/100)*33) = 80 + 5.28 = 85.28A?
Am I on the right track with my calculations, or am I mistaken in my approach to these three phase calculations?