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victordascalescu54

Caut depanator pentru convertizor de frecventa(inverter)

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Buna seara, ma poate ajuta cineva din Bucuresti, cu depanarea unui convertizor de frecventa folosit la controlul turatiei motoarelor in AC trifazic ? Este de putere mica, 1 kw. Se alimenteaza dar nu scoate tensiune. A avut un varistor pe intrare care s-a prajit dar dupa inlocuire, iesirea e tot moarta.
Multumesc anticipat
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