The loads for the above questions are: phase 1 and 2 are fluorescent lamps, and phase 3 are HID type lamps. Both types of lamps use ballast. The system has been power factor corrected to 0.9 to 1.0. The HID lamps would be turned off at various times.
RonH
I need to know how much current unbalance is acceptable for a three phase delta load. One phase will draw 37.5A, the second one 33A, and the third one 30A. I calculated the unbalance of current to be about 12%. A potential problem is that one of the legs will be switched off, thus dropping the...
