Capacitive Reactance Calculator

How Capacitive Reactance works

This worksheet evaluates XC = 1 ÷ (2πfC). Capacitive Reactance uses Frequency, Capacitance to report Capacitive reactance.

In the loaded Capacitive Reactance case, capacitive reactance equals 26.53 Ω. Use separate cases for competing input values.

In Capacitive Reactance, save the Capacitive Reactance result at 60 Hz frequency, then calculate again at 72 Hz. The corresponding capacitive reactance values are 26.53 Ω and 22.10 Ω. Capacitive Reactance holds capacitance fixed; check Alternating Current equipment limits.

In Capacitive Reactance, label Frequency by operating state. Keep capacitive reactance cases separate for frequency, waveform shape, phase convention, and RMS or peak basis.

For Alternating Current, test Capacitive reactance at nominal and limiting frequency values. Keep the Capacitive Reactance cases separate.

Inputs for Capacitive Reactance

Frequency and Capacitance belong to Capacitive Reactance. Keep source units with frequency. Bandwidth belongs in the separate Resonance Bandwidth worksheet.

Use the defaults to understand the output, then enter the real circuit or energy data.

Frequency

Example entry: 60 Hz.

Capacitance

Example entry: 100 µF.

For Capacitive Reactance, record frequency, capacitance. Record Frequency state for Capacitive Reactance. Keep capacitive reactance unrounded.

Classify Frequency as nominal, average, peak, or instantaneous. Capacitive Reactance accepts one entry. Separate capacitive reactance cases when frequency varies.

Select the Frequency instrument range for Capacitive Reactance. Record frequency, waveform shape, phase convention, and RMS or peak basis. Repeat uncertain frequency readings before refining capacitive reactance.

When Capacitive Reactance feeds another worksheet, transfer Capacitive reactance at full precision. Preserve impedance, phase, real power, apparent power, and waveform limits. Round frequency after the Capacitive Reactance transfer.

Reading the Capacitive Reactance result

This output represents Capacitive Reactance.

Compare the output with equipment limits and the applicable design margins. For total harmonic distortion, use Total Harmonic Distortion Calculator.

Keep the Capacitive reactance definition during conversion. Preserve Ω for Capacitive Reactance. Use capacitive reactance when interpreting Alternating Current units.

Measurement and units

Use RMS quantities unless a field explicitly asks for peak amplitude. Check prefixes on frequency.

Do not compare cases built from different unit prefixes or measurement locations.

For Capacitive Reactance, source Frequency from true-RMS readings, waveform captures, or equipment test data. Record frequency, waveform shape, phase convention, and RMS or peak basis. Capacitance needs matching conditions.

Limits of this calculation

Equivalent series resistance and tolerance are outside the ideal model.

Unlisted circuit behavior remains outside the computed result. Unentered effects remain outside Capacitive Reactance.

Evaluate harmonics, phase imbalance, saturation, and non-sinusoidal current separately. In Capacitive Reactance, represent each effect through Frequency. Document frequency allowances.

For Capacitive Reactance, compare Capacitive reactance with impedance, phase, real power, apparent power, and waveform limits. Document frequency tolerance for Capacitive Reactance. Treat duty separately in Alternating Current.

Questions about Capacitive Reactance