Amprobe ACD-30P Clamp-On-Power-Meters Uživatelský manuál stáhnout pdf (Strana 6)

around only one single conductor of a circuit for load current measurement. Make sure

the jaws are completely closed, or else it will introduce measurement errors. Enclosing

more than one conductor of a circuit will result in differential current (like identifying

leakage current) measurement.

●Adjacent current-carrying devices such as transformers, motors and conductor wires

will affect measurement accuracy. Keep the jaws away from them as much as possible

to minimize influence.

THD%-F Total Harmonic Distortion-Fundamental function (model ACD-41PQ only)

THD%-F = (Total Harmonics RMS / Fundamental RMS) x 100%

Total Harmonic Distortion - Fundamental (THD%-F) is the percentage ratio of the Total

Harmonics RMS value to the Fundamental RMS value of a voltage or current signal, and

is given by the above expression. An ideal sinusoidal waveform has a value of 0 THD%.

A badly distorted sinusoidal waveform may have a much higher THD% value of up to

several hundreds.

When the meter is in ACV or ACA function, THD%-F values up to 99 THD% will be

displayed in the secondary mini display automatically. Press THD%-F button

momentarily toggles THD% readings to main display to get full readings up to 999.9

THD%.

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Amprobe ACD-30P Clamp-On-Power-Meters Uživatelský manuál Strana 6