Burden Resistor calculation: Difference between revisions
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ICAL = Nturns / R | ICAL = Nturns / R | ||
'''ICAL''': Current Coefficient | '''ICAL''': Current Coefficient<br> | ||
'''Nturns''': Number of CT sensor turns<br> | |||
'''R''': Burden resistor value in Ohm<br> | '''R''': Burden resistor value in Ohm<br> | ||
Revision as of 16:08, 13 May 2017
Burden Resistor Formulae
R = (Vcc * Nturns) / (2√2 * Irms)
R: Burden resistor value in Ohm
Vcc: ADC max voltage range (usually 3.3V)
Nturns: Number of CT sensor turns
Irms: Max current to be read in rms
Current Coefficient Formulae
This will compute ICAL.
ICAL = Nturns / R
ICAL: Current Coefficient
Nturns: Number of CT sensor turns
R: Burden resistor value in Ohm