SKU: 12098102029

Victron Autotransformer - Split Phase 120/240V - 100AMP

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Description

Victron Autotransformer - Split Phase 120/240V - 100AMPAutotransformer Split Phase 120 240V 100AMP The Autotransformer: for step up, step down and split phase balancing An autotransformer can be used for step up, step down and split phase output balancing purposes. While the step up and step down functions are fairly straightforward, split phase output balancing may require some more attention. Consider for example a 30A 120 240V split phase supply. The supply could be the grid, a generator or two stacked

Autotransformer - Split Phase 120/240V - 100AMP

The Autotransformer: for step up, step down and split phase balancing An autotransformer can be used for step up, step down and split phase output balancing purposes. While the step up and step down functions are fairly straightforward, split phase output balancing may require some more attention. 

Consider for example a 30A 120/240V split phase supply. The supply could be the grid, a generator or two stacked inverters. Some of the loads connected are 240V, others are 120V. On each 120V leg the load should not exceed 30A. The problem is that as soon as 120V loads are connected, the two legs will show a different current. This is because the 120V loads on the two legs will never be balanced. A 120V 1200W hairdryer, for example, will draw 10A from one leg. A 120V washing machine could even draw in excess of 20A from one leg. Between the two legs the difference in current, or current unbalance, will therefore often be 20A or more. This means that the 30A supply will not be used up to its full potential. By the time one leg draws 30A, the other leg may be drawing no more than 10A, and increasing the 240V load, for example, will result in an overload of one leg while the other leg still has spare capacity. Theoretically, the total power that can be drawn from a 30A 120/240V supply is 30 x 240 = 7,2 kVA. In case of 20A unbalance, the practical maximum will be 30 x 120 + 10 x120 = 4,8kVA, or 67% of the theoretical maximum. The solution is an Autotransformer. By leaving the neutral of the split phase supply unused, and connecting an Autotransformer to create a new neutral, as shown in figure 1, any load unbalance is ‘absorbed’ by the Autotransformer. In case of a 30A supply, the load can be increased to 7,2kVA, and a 20A load unbalance will result in one leg supplying 40A, and the other leg 20A. The 20A difference will flow through the neutral and the windings of the Autotransformer. The current through both 120V wires of the split phase supply will be 30A. 

Temperature protected In case of overheating, the Autotransformer is disconnected from the supply. Reset is manual. Ground relay for use with Multi or Quattro Inverter/Chargers included When operating in inverter mode, the neutral output of the inverter/charger must be connected to ground to guarantee proper functioning of a GFCI. In case of a split phase supply the neutral must be grounded. For this purpose a grounding relay is built in the autotransformer’s enclosure. The relay is controlled by the 230/240V Multi or Quattro. (The internal grounding relay in the 230/240V Multi or Quattro must be disabled) 

An alternative to stacked inverters The alternative to stacking two 120V inverters to provide a 120/240V split phase supply is a 240V inverter with an additional Autotransformer.

Warranty Info

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Please contact your dealer for any returns, repairs or support issues related to this product.
Manufacturer : Victron Energy
Manufacturer Part No : ITR000100101
UPC : 8719076022428
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SKU: 12098102029

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Helen
Bozeman, US
★★★★★ 5
My dog loves it!
My golden loved this chew toy, he’s fixated on it and actually returns to it. It seems tasty and safe. Will definitely buy again and recommend it to others.
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Reviewed in the United States on January 7, 2024
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Kara Riba
Chelsea, US
★★★★★ 5
Durable & fun for aggressive chewers.
Color: Yellow
Holding up very well for our aggressive chewer. Squeaker is still intact & our 70-pound pittie breed often chooses this toy to play with over others. Pittie approved.
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Reviewed in the United States on February 14, 2026
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Anna Sambursky
San Leandro, US
★★★★★ 1
Not at all indestructible
It was well loved while it lasted. But this fish was delivered on Saturday and I’m writing my review on Tuesday morning. So we are looking at roughly 3 days of play. I bought the fish toy and almost immediately the fins were ripped off. But I figured as long as the body stayed intact we’d be good. But it wasn’t long before the body was ripped open as well. Very disappointed. Evidently my dog’s bite is more damaging than a bullet? I’m sure it will last all in all a week before there’s no saving it anymore. Will look for other better toys for my super chewer.
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Reviewed in the United States on September 26, 2023
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Jane
New York, US
★★★★★ 5
Lasted the longest of any toy we bought yet!
Very happy with the toys we bought so far! The owl didn’t last as long as the raccoon. The raccoon lost his ear pretty quickly, but the rest of the toy has held up for almost a month now. That is *significantly* longer than any other stuffed animal toy we’ve tried so far. Pretty much any other stuffed animal toy we’ve tried from Kong or elsewhere has fallen apart in a few days. This is a good toy for sharp puppy teeth! Also such cute designs. Just bought the Mallard, excited to see how it goes!
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Reviewed in the United States on October 9, 2023
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Rachel WC
Port Orchard, US
★★★★★ 3
Not Pitty Proof..
Color: Bear, Color: Bear
The toy itself was very detailed and cute, But my potty had the toy about 10 mins and she took the leg off .. it’s a bit pricey. Since it didn’t last long so .. if you have pitty save your money and don’t buy it ..
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Reviewed in the United States on March 6, 2026

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