question

gprado avatar image
gprado asked

Autotrasformer for US split phase and 15 kva Quattro

I would like to connect 2 Quattro 15 kva in parallel for an output of 24 kW. I would also like to connect that output to the 100 amp Autotransformer to obtain a 120-N-120 split phase (USA). I have seen the circuit diagram describing a similar connection with 1 Quattro, but I have not been able to confirm if you can do with two inverters in parallel. Thanks!

battery chargingAutotransformersplit phase
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3 Answers
ben avatar image
ben answered ·

Sure, you can do it with two. Keep in mind, though, that a single AT can only sink 32A of neutral current (difference between L1 and L2).

With that large of a system, you may need two ATs or one larger AT.

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gprado avatar image
gprado answered ·

@ben Thanks Ben! When you say 32 amps on the neutral, are you referring to the 100 amp autotransformer or the 32 amp autotransformer?

2 comments
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gprado avatar image
gprado answered ·

Hello again @ben. I just checked the specs, and now I see that both the 32 amp and the 100 amp have the 32 amp limitation on the neutral. The follow up question would be: is there any issues in connecting two autotransformers in parallel?

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