question

Herve RV Nizard avatar image
Herve RV Nizard asked

Autotransformers consumption

Victron autotransformers .

I have no experience with these autotransformers . Does anyone have an idea of the idle consumption of these ? We are finalizing the design of an off grid residential solar system on a very remote island . Customers needs to have 110 and 240 v output . Local grid (not yet available) is 240v single phase 50 Hz . Customer generator is same 240v/50Hz / Single phase / 12 Kva. Planning to install a Multiplus 48/8000 240v and a 100A Autotransformer . Customer's house is wired with 2 circuits : 100 and 220 V . In order to fine tune the daily Kwh consumption, I am trying to get an idea of the consumption of these transformers . any idea will be highly appreciated . Thanks .


Autotransformer
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1 Answer
wkirby avatar image
wkirby answered ·

A 3kVA toroidal transformer (similar size to the one on the Victron Autotransformer) typically has a no load loss of about ~15W.

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