Wanted: Isolation Transformer

[krush]

Want to buy used isolation transformer that also does 2:1 step down (or 1:2 step up). Any size is fine, nothing huge needed...5-10kVA would be super.

 

[yachtsmanbill]

All the ones Ive seen are delta- delta, Y-Y, Y-delta or delta-y hook ups. It all depends on the taps

 

[SEVEN]

I have seen them pop up on Craigslist all the time. If no one here has one try there. Good luck

 

[chuckbullett@gmail.com]

FWW... I am on the prowl too.In the end may just pay the 2700 for the Charles... But the CA sales tax is a killer. May seek one out of state.

 

[chuckbullett@gmail.com]

I have seen them pop up on Craigslist all the time. If no one here has one try there. Good luck

There is a 120V/50 on Craig's list in Benecia... Too small for my 53MY but others may be able to use it.

 

[Boatsb]

How big do you need?

Are you looking at an isolation. Or a buck boost transformer?

 

[krush]

How big do you need?

Are you looking at an isolation. Or a buck boost transformer?

copy/paste: Want to buy used isolation transformer (ADD: Transformers are naturally isolation devices) that also does 2:1 step down (or 1:2 step up). Any size is fine, nothing huge needed...5-10kVA would be super.

As I told the students I taught....generator (ends) and transformers are rated in kVA

 

[Boatsb]

In the marine world we consider isolation as manual and buck boost as automatic. So there. By the way I wasn't typing to you.

 

[SKYCHENEY]

My boost is manual.

 

[Boatsb]

I did a power system in a customers boat with an auto switch and a buck boost (automatic ) transformer from charles. It was a sweet design. The transformer is completely automatic. No user intervention required.

 

[krush]

This may be the ticket! https://www.automationdirect.com/adc/Overview/Catalog/Power_Products_(Electrical)/Power_Transformers)

look at encapsolated transformers.....buck/boost in industry usually means going down to lower voltages like 24vac

 

[Boatsb]

Bad link krush

 

[krush]

Fixed link: https://www.automationdirect.com/adc/Overview/Catalog/Power_Products_(Electrical)/Power_Transformers

Encapsulated

 

[Cricket]

You're absolutely correct BoatSB, have the Charles auto switch and Charles transformer with auto boost, both really great products. Got rid of of a lot of extra wire and switches and we never have to think about all of that nonsense anymore.

 

[saltshaker]

This may be the ticket! https://www.automationdirect.com/adc/Overview/Catalog/Power_Products_(Electrical)/Power_Transformers)

look at encapsolated transformers.....buck/boost in industry usually means going down to lower voltages like 24vac

FYI Jefferson is the OEM for most of the older Hatts. If I'm reading this right, I would need 2 Jefferson 416-1161-000 units at $167 each. Sounds awfully cheap. Curious how well they would hold up in a marine environment. Mine are in the cabin under the dinette so much less exposure than in the ER.

 

[krush]

FYI Jefferson is the OEM for most of the older Hatts. If I'm reading this right, I would need 2 Jefferson 416-1161-000 units at $167 each.

The industry term for buck/boost is often to get a low control voltage output, not what boaters tend to use. The transformer you are speaking of is:

240x120 VAC 60Hz buck-boost transformer, 1.5kVA, 1-phase, 240x120 VAC primary, 24x12 VAC secondary, NEMA 3R. Suitable for use as auto or isolation transformer.

That means capacity is 1.5kVA (not a lot) and it designed to take 240 or 120VAC in and put out 24 or 12 VAC out. One could hook 24 or 12 VAC to it (backwarsd) and get 120/240VAC out of it too--though that may not be "approved".

 

[Boatsb]

My boost is manual.

My wife's cousin in Puerto Rico is Manuel.

 

[SKYCHENEY]

My wife's cousin in Puerto Rico is Manuel.

Funny, that's how I switch it. I have a little Puerto Rican in the Gen room that monitors the voltage and flips the switch with needed.

 

[krush]

Still looking for used isolation (step up/down) transformer.

 

[kflod]

Hi, I have a 15 kva Jefferson that I'm not using anymore. Single phase, 120-240vac in/out. Catalog no is 211-001-078. I live however in Norway,so you might want to check the shipping costs....it weighs approximately a ton or around 200lbs

Kristian