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Discount Autotransformer 120/240V-100A | Victron Energy ITR000100101
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Discount Autotransformer 120/240V-100A | Victron Energy ITR000100101

Original price was: $509.15.Current price is: $152.74.

For orders under $59.00, a shipping fee of $11.99 applies.

SKU: SK0069189-US20251216-084134 Category:
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  • 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
  • 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)
  • Temperature protected
    • In case of overheating, the Autotransformer is disconnected from the supply. Reset is manual
    • 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
    • Two stacked 120V 3kVA inverters will supply up to 25A to each 120V leg
    • If the load on one leg is less than 25A, the maximum load on the other leg is still limited to 25A
    • One 240V 5kVA inverter with a 32A Autotransformer will supply up to 21A of balanced load to each 120V leg
    • Fewer loads on one leg will however result in more power being available on the other leg, with a maximum unbalance of 32A
    • Therefore the load can be up to 38,5A on one leg if the load is not more than 3,5A on the other leg (maximum unbalance: 38,5 – 3,5 = 35A)
    • If load unbalance is to be expected, a lower power 240V inverter with autotransformer will therefore be preferable to the stacked inverter solution

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