Ceiling fan capacitor

[skmdmasud]

Hi changed my ceiling fan capacitor which was 2.5uf 450v with a 225j 400v. Fan is spinning good, should I keep it or buy a 2.5uf?

Regards
Masud.

 

[MaxHeadRoom78]

Is that replacement 2.25μf at 400v?
If so it should be fine.
Max.

 

[MikeMl]

Since 105 is 1uF, wouldn't 225 be 2.2uF?

 

[DerStrom8]

Since 105 is 1uF, wouldn't 225 be 2.2uF?

It is, but the original was 2.5uF.

 

[MikeMl]

It is, but the original was 2.5uF.

But Max came up with 2.25uF. I was wondering where the third significant figure came from?

 

[DerStrom8]

But Max came up with 2.25uF. I was wondering where the third significant figure came from?

Woops, missed that

 

[skmdmasud]

Thanks for helping me out. Just wondering that the replacement is less uf and working well, so what am i missing here?

 

[MaxHeadRoom78]

The principle behind the start/run winding on a PSC motor is it provides a degree of phase shift in the start winding WRT the run winding, the phase angle difference is a produced by the value of the cap and the inductive reactance of the winding, the ideal is a 90° shift.
The value required is not super critical, the slight increase you May have in current should not be a concern.
Max.