Pillar Drill Capacitor

[bill_face]

Hello all,

I have an Energer 350W Drill press I bought from Screwfix about 5 years ago.

It has a capacitor behind a plastic casing on the back of it that has melted. The drill will only work if I give it a spin with my hand to get it going.

All the 350w pillar drills from Screwfix (Titan), Clarke etc seem to have the same design so I'm guessing will have the same rating capacitor.

I'm wondering if someone could have a quick look on theirs to see what rating it may have. Two screws involved and I'll attach a pic of the location

The bit of my capacitor that hasn't melted says 'CBB60'

Cheers

 

[Burnerman]

The CBB60 capacitor is rated at 14uf.
John

 

[bill_face]

Cheers!

 

[JohnD]

The CBB60 capacitor is rated at 14uf.
John

CBB60 is just a type.

"C – meaning Capacitor
B – meaning the Dielectric is a non-polar organic film
B – meaning the Dielectric material is polypropylene
60 – meaning Plastic can motor run capacitor."
Typically 1uF~150uF

 

[bill_face]

Yes there's loads of different capacitance ratings.
Guess I'll find out as I've just bought a 14uf one

 

[JohnD]

I don't know how it is calculated.

@bernardgreen may know.

 

[JohnD]

The CBB60 capacitor is rated at 14uf.
John

Oops, sorry, did you mean ".... in this pillar drill?"

I may have misunderstood.

 

[mattylad]

This video suggests its a 6uF 440V capacitor.

 

[JohnD]

It might have a "run" and a "start" capacitor

 

[Burnerman]

My drill has this exact start capacitor and it says 14uf 300vac......that'll do for me!
John

 

[bernardgreen]

I don't know how it is calculated.

@bernardgreen may know.

I do have a rough idea and could probable locate a formula.

However even if I could find the right formula it would require measuring the inductance of the motor windings and knowing the maximum current carrying capacity ( CCC ) of the winding that is connected in series with the capacitor.

The CCC is like several other parameters a design parameter that cannot be measured.

 

[bill_face]

My drill has this exact start capacitor and it says 14uf 300vac......that'll do for me!
John

That'll do for me as well... Cheers