Power Analysis Values; Total Harmonic Distortion Measurement - Delta DPM-C520 Operation Manual

Multi-functional power meter

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After you click the "Reset Wi-Fi module" button, a confirmation prompts up to make sure you really

want to reset the module.

And after the reset is done, a message stating "Set Reset Success!" appears.

4.4 Power Analysis Values

The total harmonic distortion (THD) is a measurement of the harmonic distortion and is defined as the ratio

between the power of the harmonic frequencies above the base frequency and the power of the base frequency.

The total harmonic distortions for current/voltage are calculated using the following formula.

Total Harmonic

Distortion for Current

Total Harmonic

Distortion for Voltage

C h a p t e r 4 O p e r a t i o n

4 - 2 1

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