single phase motor -- current
single phase motor -- current
(OP)
If I have a 120V - single phase motor, is current simply equal to power/voltage?
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single phase motor -- current
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RE: single phase motor -- current
I= (HP*746)/(V*PF*EFF)
HP= motor power output ( in the shaft)
V = Voltage
PF = Power Factor (per unit)
EFF = Motor Efficiency
RE: single phase motor -- current
RE: single phase motor -- current
This motor is ''small'', 0.5hp, 1725rpm, 120V/1ph/60hz used to run a small fan. Unfortunately, those are the only specs I have on the motor.
cheers
RE: single phase motor -- current
RE: single phase motor -- current
The Power Factor and Efficiency are defined by the motor construction. If you do not have information from the manufacturer you must assume them.For this small motor the product EFF*PF could be around 0.64, then the spected full load (0.5 HP) current is:
Ifl = 0.5HP*746/(120*.64) = 4.85 Amperes.
RE: single phase motor -- current