high watt resistor for ct protection

Discussion in 'General Electronics Chat' started by Avicreats, May 28, 2013.

  1. Avicreats

    Thread Starter New Member

    Jan 18, 2013
    19
    0
    Hello evryone,

    I am conditioning a current using a circuit.I have a 80/2 current transformer(ct) which is connected to a live load.The o/p of the ct will be 0-2 ampswhich i have to condition into a voltage.
    We know secondary of ct should not be kept in open.So theoritically,if we place a high wattage resistor in parallel to the ct,will it avoid the open ckt if a fault occurs.

    So using a 1ohm 10watt resistor, can it withstand the maximum current of 2amps from the ct. p=i*i*r. so i=2A,r=1ohm.and thereby p=4watt.iam using 10watt for best protection
    is my calculation right...
    Plz anyone help me out of this...
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,986
    745
    Yes the wattage and voltage are correct as per Ohms Law, whether the circuit will work is another thing....
     
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