Addition of 3PH and 1PH loads
Addition of 3PH and 1PH loads
(OP)
If I have (1)36kVA 3PH load, (1)10kVA 1PH-A, (1)15kVA 1PH-B and (1)15kVA 1PH-C loads, is my total effective kVA load 36+15+15+10= 76kVA for sizing a generator to supply them (assuming they are operating simultaneously).






RE: Addition of 3PH and 1PH loads
Heavily unbalanced loads are not desirable because of the negative phase sequence heating of the rotor. On small sets this rarely seems to be a practical problem and can probably be disregarded.
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RE: Addition of 3PH and 1PH loads