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  1. S

    Dol Starter

    I have a 1.5HP 3 phase motor. I need to built a DOL starter for the motor. I need help on selecting correct parts for the starter. can anyone show the calculations to select Overload relay,cantactor and MCB for the starter.
  2. S

    Mccb & Cable Sizing

    I have a question about sizing the MCCB and the cable for a 55kW 3 phase motor. I have done following calculations and please correct me if wrong.  FLC = 55000/(1.732*415*0.8) , (I have assumed the PF as 0.8), FLC = 96A  Main,delta Contactor & Over load realy; 96*0.58 = 56A, Star...
  3. S

    Star Delta Mccb And Cable Sizing

    I have a question about sizing the MCCB/MCB and the cable for a 9.3kW 3 phase motor. I have done following calculations and please correct me if wrong.  FLC = 9300/(1.732*415*0.8) , (I have assumed the PF as 0.8), FLC = 16.17A ( 17A) Main,delta Contactor & Over load realy; 17*0.58 =...
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