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Convertizor de frecventa


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Pentru functionarea  a doua motoare trifazate  4kw si o,75kw pot folosi un singur convertizor de frecventa?

Mentionez  ca ambele motoare sint ale  aceluiași  utilaj  (circular pal melaminat) pornesc si se opresc in acelasi timp, conexiunea  D -400  Y-660.

Multumesc. 

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Se poate folosi cu urmatoarele conditie: tensiunea nominala si frecventa de baza sa fie aceeasi (se admite o abatere de 10-15%) pentru conexiunea in care se doreste folosirea fiecarui motor.

Observatii:

- daca au numar de poli diferiti, evident turatiile vor fi in raportul respectiv

- nu se poate folosi control vectorial sau alte metode similare, doar V/f=ct

- motorul de putere mai mica trebuie protejat separat la suprasarcina (releu termic/similar)

 

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