Changing Ceiling Fan Capacitor

[tr4falgar]

Hi. Im just about to jump into electronics world. I got no basic about electronics. But seems like now, im in love with it.

Hope could get some help here.

A. Old fan capasitor. 2.2uf 800vac (burned)
B. New fan capasitor. 2.5uf 400vac

Im trying to find an exactly spec like the original capcitor (A). But seem cant find any around my town. So i get the (B) capasitor instead.

My question is, what would its cause if i change the capacitor that has lower vac?

 

[ramussons]

For even a 230 V AC fan, 400 V AC capacitor is good enough.

 

[tr4falgar]

For even a 230 V AC fan, 400 V AC capacitor is good enough.

Great, it is 230v ac fan, thanks alot for the reply

 

[Minder]

Just insure it is AC Motor Run rated.
M.

 

[tr4falgar]

Just insure it is AC Motor Run rated.
M.

This the burned one.

And this the replacement part. Is it looks like AC motor run rated?

 

[Minder]

Looks OK, but Chinese origin motor capacitors do not have a very good track record.
M.

 

[tr4falgar]

Looks OK, but Chinese origin motor capacitors do not have a very good track record.
M.

I've got no choice. For awhile gonna give it a try. I guess need to order online for better capacitors.

 

[tr4falgar]

Am i connected it the right way? And how do i measure / check this capacitors. Im searching at youtube, seem no video about how to test this kind of capasitors. All of it just the round shape capasitors.

This is my multimeter. Can it do the measurement?

 

[Minder]

For motor run/start capacitors there is no polarity to observe. either connection should work.
I use N.A. made oil filled for reliability. CDE etc.
M.

 

[tr4falgar]

For motor run/start capacitors there is no polarity to observe. either connection should work.
I use N.A. made oil filled for reliability. CDE etc.
M.

Im sorry, i coundn't understand the term N.A & CDE. Hope could get some explanation.

 

[Minder]

N.A.= North America.
CDE = Cornell-Dubilier
M.