By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Forum House Ad Zone

Capacitor selection

All Topics | Latest Posts

Search for:  in Thread Title in  
<< First < Prev 1 2
colin hamilton15/09/2023 15:33:47
186 forum posts
94 photos

Quick update: I've just connected a 450V 200uF and it runs like a dream. Thanks for all your input. Cheers Colin

noel shelley15/09/2023 16:04:04
2308 forum posts
33 photos

It's good to hear that all is well again. Thank you for letting us know. As you use it just check that it does NOT run to hot, warm is fine. Noel

not done it yet15/09/2023 18:42:44
7517 forum posts
20 photos
Posted by noel shelley on 15/09/2023 16:04:04:

It's good to hear that all is well again. Thank you for letting us know. As you use it just check that it does NOT run to hot, warm is fine. Noel

It should not be in circuit for long as a ‘starting’ capacitor?

colin hamilton15/09/2023 19:10:01
186 forum posts
94 photos
Posted by not done it yet on 15/09/2023 18:42:44:
Posted by noel shelley on 15/09/2023 16:04:04:

It's good to hear that all is well again. Thank you for letting us know. As you use it just check that it does NOT run to hot, warm is fine. Noel

It should not be in circuit for long as a ‘starting’ capacitor?

I'm pretty sure I can hear the centrifugal switch disconnecting it shorty after starting. I only know about centrifugal switches thanks to this thread!!!!

colin hamilton16/09/2023 12:40:44
186 forum posts
94 photos

Update no 2:

It turns out the capacitor was sealed inside a can. It's actually 20uF so with my 200uF I'm guessing the windings won't last long. I'll get another ordered.

20230916_091150.jpg

20230916_091200.jpg

noel shelley16/09/2023 13:07:37
2308 forum posts
33 photos

AH ! The bit that shouldn't get hot is the motor ! Noel

Robert Atkinson 216/09/2023 13:08:08
avatar
1891 forum posts
37 photos

As long as the centrifugal switch is working and the motor is not getting hot the bigger capacitor may not be a problem. It is mainly purpose is to provide a phase shift. The current depends on both the capacitor and the winding.
The motor manufacturer will fitt the smallest capacitor possoble to reduce costs. I'd be more concerned if it was a run capacitor.

Robert.

colin hamilton16/09/2023 23:32:49
186 forum posts
94 photos
Posted by Robert Atkinson 2 on 16/09/2023 13:08:08:

As long as the centrifugal switch is working and the motor is not getting hot the bigger capacitor may not be a problem. It is mainly purpose is to provide a phase shift. The current depends on both the capacitor and the winding.
The motor manufacturer will fitt the smallest capacitor possoble to reduce costs. I'd be more concerned if it was a run capacitor.

Robert.

Sounds good. I may just let it be for a while and see what happens

<< First < Prev 1 2

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Sign up to our Newsletter

Sign up to our newsletter and get a free digital issue.

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts
Support Our Partners
cowells
Sarik
MERIDIENNE EXHIBITIONS LTD
Shopping Partners
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest

 

Donate

donate