Calculate capacitive reactance and the current a capacitor passes at a given frequency.
Capacitive reactance falls with frequency, so a capacitor blocks DC and passes high frequencies. That is the basis of coupling capacitors, decoupling and high-pass filtering. A power factor correction capacitor supplies leading reactive power, which is why it cancels the lagging reactive power of motors.
Capacitive Reactance
X_C = 1 ÷ (2πfC); I = V ÷ X_C
X_C = 1 ÷ (2πfC); I = V ÷ X_C Capacitive reactance falls with frequency, so a capacitor blocks DC and passes high frequencies. That is the basis of coupling capacitors, decoupling and high-pass filtering.
A power factor correction capacitor supplies leading reactive power, which is why it cancels the lagging reactive power of motors.
This calculator takes 3 inputs: Capacitance, Frequency, Applied voltage. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.