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For a electrical changeover board. I have to choose AC1 or Ac 3 Current of contractor
Please advice. For a electrical changeover board. I have to choose AC1 or Ac 3 Current ratting of contractor.
My system is 400V, 250A 50Hz. But I already a contractor Abb EK-150-40-11 220/230V. Its operating 150KW, voltage is 690V , Ac1 =250A @ 40c. Can I use this contractor for my change over SWBD? |
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