Inductance and ressitance values for Ceiling/pedestal fan single phase ac

Thread Starter

amad1

Joined May 25, 2019
50
Hi everybody
I need to know how to roughly get idea about inductance value of ceiling /pedestal single phase, rated 230 V AC fan? I want to roughly model this.
 

Ramussons

Joined May 3, 2013
798
You said Roughly :D
Get a incandescent bulb across the mains.
Measure the Current and the Voltage.
You get the Resistance of the Bulb.

Put the bulb in series with the Fan
Measure the Voltages across the bulb and fan.
The fan has 2 windings, 1 connected thru a capacitor, likely 2.5 uF.
Measure voltages across each winding and capacitor.

Measure the Mains current.
Assume Line Frequency as 50 Hz

With the measured values, the inductance offered by the fan can be worked out.
 

Thread Starter

amad1

Joined May 25, 2019
50
Sir
You said Roughly :D
Get a incandescent bulb across the mains.
Measure the Current and the Voltage.
You get the Resistance of the Bulb.

Put the bulb in series with the Fan
Measure the Voltages across the bulb and fan.
The fan has 2 windings, 1 connected thru a capacitor, likely 2.5 uF.
Measure voltages across each winding and capacitor.

Measure the Mains current.
Assume Line Frequency as 50 Hz

With the measured values, the inductance offered by the fan can be worked out.
Sir thankyou for your valuable response...
1) I had a 60watt incandascnt bulb so i can calculate resistance of bulb.
2) secndly I have pedestal sngl phase ac phase..We have only plug accessble to us for fan...we need to open box of fan for getting access to point where capacitor connects?
3) If after point 2,still we have only 3 terminals availble.one is common and other 2 a cap is cnctd betwen them.where to measure voltages?
4) after above how to calculate inductan e of fan?
5 ) How to calculate R component of fan?
6) pedestal fan is general 230vac rated sngle phase
Regards
 

crutschow

Joined Mar 14, 2008
24,115
The easiest way may to buy a wattmeter, such as this, and measure the power and power-factor of the fan.
From that you can calculate the equivalent resistance and inductance of the motor.
 
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