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Victron Auto Transformer
This is a specialty transformer for step-up, step-down and split phase output balancing purposes.
The step up and step down part is easy: Input can be 120 Volts and output 240 Volts or input can be 240 Volts and output 120 Volts. Regardless of the input voltage the input current is limited by the built in breaker to 100 Amps.
By leaving the neutral of the split phase supply unused, and connecting an autotransformer to create a new neutral, any load unbalance is “absorbed” by the autotransformer.
A Ground relay for use with Multi or Quattro inverter/chargers is included.
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.