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Forum: Electrical: Batteries, Generators & Solar

23-02-2011, 12:43

Replies: 21

Isolation Transformer to also Provide Dual Voltage Shore Power ?

Views: 7,775

Posted By DotDun

Re: Isolation Transformer to also Provide Dual Voltage Shore Power ?

IMO, I don't think you'll find a 'reasonable' solution to run 120v/60hz air conditioners on 230v/50hz. Voltage step down is easy, frequency manipulation is expensive, hence not 'reasonable'.

My...

Forum: Electrical: Batteries, Generators & Solar

23-01-2011, 20:57

Replies: 21

Isolation Transformer to also Provide Dual Voltage Shore Power ?

Views: 7,775

Posted By DotDun

What I know is by comparing marine isolation...

What I know is by comparing marine isolation transformers. Victron states they use toroid transformers, the Charles unit I mentioned does not state transformer type. The Charles unit is 6kva @...

Forum: Electrical: Batteries, Generators & Solar

23-01-2011, 20:44

Replies: 21

Isolation Transformer to also Provide Dual Voltage Shore Power ?

Views: 7,775

Posted By DotDun

Sorry, I didn't explain. I have a Fluke 330...

Sorry, I didn't explain. I have a Fluke 330 series meter with inrush capability.

From the manual....

"The 330 Series takes a large number of samples precisely at the beginning of the...

Forum: Electrical: Batteries, Generators & Solar

23-01-2011, 20:31

Replies: 21

Isolation Transformer to also Provide Dual Voltage Shore Power ?

Views: 7,775

Posted By DotDun

It's not quite that ugly, google toroid winding...

It's not quite that ugly, google toroid winding machines and watch the videos. The shuttles are split, mounted thru the core, then loaded with wire before the 'first loop' winding begins. The...

Forum: Electrical: Batteries, Generators & Solar

23-01-2011, 20:13

Replies: 21

Isolation Transformer to also Provide Dual Voltage Shore Power ?

Views: 7,775

Posted By DotDun

As with everything there are trade-offs. I...

As with everything there are trade-offs.

I use my transformer for isolation from dock power, not voltage regulation. As I stated, I found the inrush on my toroid is acceptable for my...

Forum: Electrical: Batteries, Generators & Solar

23-01-2011, 12:43

Replies: 21

Isolation Transformer to also Provide Dual Voltage Shore Power ?

Views: 7,775

Posted By DotDun

I measured the inrush on mine ~30-32a @ 240v with...

I measured the inrush on mine ~30-32a @ 240v with a Fluke, not enough to require soft start for my 50a shorepower. I would like to think both a 30a 120v and 16a 220v would handle the measured inrush...

Forum: Electrical: Batteries, Generators & Solar

22-01-2011, 18:50

Replies: 21

Isolation Transformer to also Provide Dual Voltage Shore Power ?

Views: 7,775

Posted By DotDun

You are correct, an isolation transformer with...

You are correct, an isolation transformer with dual primary windings can utilize either 120v or 240v shore power and deliver 120v to the boat. The unit you are referring to also has dual secondary...

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