Power quality calculators

Voltage event, voltage-unbalance, harmonic, resonance and measurement-log worksheets for Australian power-quality review.

7 calculators
Australian workflow
230/400 V a.c. context

CalculatorVoltage unbalance calculatorCalculate average-deviation voltage unbalance from one measured three-voltage set.Inputs: Record reference, measurement set, three voltages, nominal voltage and entered review threshold.Output: Measurement worksheet requiring instrument, DNSP, equipment and project review before formal conclusions.
CalculatorVoltage sag calculatorCalculate event voltage sag from entered pre-event and event voltage values.Inputs: Event reference, pre-event voltage, event voltage, duration and entered review threshold.Output: Event worksheet requiring measurement, equipment and project context before wider interpretation.
CalculatorHarmonic current TDD calculatorCalculate total demand distortion from harmonic current RMS values and demand current.Inputs: Record reference, demand current, harmonic current rows and entered review threshold.Output: Current-harmonic worksheet that keeps the demand-current basis visible.
CalculatorCapacitor resonance screen calculatorScreen entered capacitance and inductance for resonant frequency and harmonic order.Inputs: Record reference, capacitance, inductance, system frequency, review harmonic and band.Output: Screening worksheet requiring supplier, engineering or study review before product decisions.
CalculatorNeutral harmonic current calculatorEstimate neutral triplen harmonic current from entered phase harmonic current rows.Inputs: Record reference, triplen harmonic order, three phase harmonic currents and entered review threshold.Output: Triplen harmonic worksheet that stays separate from ordinary load-imbalance neutral current.
CalculatorPower-quality measurement log calculatorSummarise entered voltage, current or harmonic measurement rows.Inputs: Log reference, timestamped measurement rows, units and entered review threshold.Output: Record-summary worksheet for min, max, average and rows above the user-entered threshold.
CalculatorHarmonic THD calculatorCalculate total harmonic distortion from entered fundamental and harmonic RMS magnitudes.Inputs: Record reference, measurement type, fundamental magnitude, harmonic RMS values and entered review threshold.Output: Power-quality record worksheet requiring analyser, DNSP, equipment and project review before formal conclusions.

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Calculation tools, structured tables, charts and guides for Australian electrical work using local terms, metric conductor sizes and 230/400 V, 50 Hz context.

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