Reactor %Z impedance derivation
The reactor is an inductive component that is identified and sized by a ratio of its reactive impedance to the
applied circuit impedance: (see equations 1 & 2). Reactors by themselves don’t have a % impedance value only by
applying the reactor inductance and a current rating to an application with line voltage and frequency can %Z be
realized. Reactor percent Z impedance is also an indication of the voltage drop across the reactor during
application of the load current. To better understand the math behind the numbers we need to go through the % Z
derivation.
