help with 3 phase delta current calculation

Discussion in 'General Electronics Chat' started by mde, Oct 17, 2007.

  1. mde

    Thread Starter New Member

    Oct 17, 2007
    I need some help calculating the circuit current for a 3 phase delta heater. The heater is rated 30KW and will be connected to 240 vac delta. Please check my calculations.

    I(total) = 30KW/1.73X240= 72.3 A

    assuming that the loads are balanced so the current should be L1=L2=L3

    L1= 72.3/3= 24.1 A
  2. recca02

    Senior Member

    Apr 2, 2007
    power = 1.73*240*line current
    line current=72.3 A -------from ur calculations
    phase current(current in each phase) = line current/1.73= 41.72A