1. Known Data
Fan Motor Output: 0.172 kW
Compressor Motor Output: 2.9kW
DC Inverter-driven Scroll
Voltage: 208/230, single phase
What I need to find is the FLA for each fan motor(2), and the FLA of the compressor motor.
Total MCA = 32A
2. Relevant equations
I'm not really sure, no other information is given.
3. The attempt at a solution
I'm pretty sure it goes something like this but I can't find any resources that would help me calculate this. I've taken electric circuits in physics and in electrical engineering but I do not recall.
Going to assume the power factor = 0.8
I have no clue as to the efficiency, and I'm going to guess that its incorporated into the power factor?
For the Fan,
FLA = 172/(230*0.8)
FLA = 0.934783 Amps.
For the compressor I'm going to make generally the same assumption, that the power factor is 0.8 and that I have no clue as to the efficiency.
FLA = 2900/(230*0.8)
FLA = 15.76087 Amps.
So since the MCA is set to 32 Amps, I'm going to at least double check,
(Compressor FLA)*1.5+(Fan FLA) = MCA
^^Pretty sure this is the equation
(15.76087)*1.5+(0.934783) = 24.57 MCA
Obviously not 32. Anyone???