jojo
Member
- Location
- Philippines
- Occupation
- Electrical Engineer
Hello, I just want to ask advice if I did this correctly. The system is 480Y/277V 3P, 4W having a phase currents: A=57.03amps (15.8kW), B=38.01amps (10.53kW) and C=38.93amps (10.78kW). Total connected load is 44.66amps (37.11kW). I want to know the percentage unbalance current.
Here's what I did:
% unbalance = [(maximum deviation from average)/ Average] x 100%
Average= (57.03A + 38.01A + 38.93A)/ 3 = 44.66A
Max deviation from average = 57.03A - 44.66A = 12.37A
%unbalance = (12.37A/ 44.66A)*100% = 27.70%
I know already that the max unbalance in the system/panelboard should be less than 10%. Please advise. Thanks in advance for your help. =)
Here's what I did:
% unbalance = [(maximum deviation from average)/ Average] x 100%
Average= (57.03A + 38.01A + 38.93A)/ 3 = 44.66A
Max deviation from average = 57.03A - 44.66A = 12.37A
%unbalance = (12.37A/ 44.66A)*100% = 27.70%
I know already that the max unbalance in the system/panelboard should be less than 10%. Please advise. Thanks in advance for your help. =)