Amprobe DMIII-Multitest Power-Quality-Recorder Manual do Utilizador descarregar pdf (Página 49)

AMPROBE

DMIII MULTITEST

EN-47

7.4. "VOLTAGE" FUNCTION

This function permits to display in real time the RMS value of AC/DC voltage, the peak and

Thd values of the 3 phase voltages, the waveform and the harmonic spectrum of the 3

phase voltages.

7.4.1. Symbols

The VOLTAGE position has three working modes:

 METER

 WAVE

 HARM

These modes will be described in detail in the next paragraphs. The used symbols are

described below:

Symbol

Description

V1, V2, V3

RMS value of voltage (phase 1, phase 2, phase 3 respectively)

V12, V23 or V32,

V31

RMS value of phase to phase voltage

Vpk1, Vpk2, Vpk3,

Vpk12, Vpk32

peak value of voltage (phase 1, phase 2, phase 3 and phase-to-

phase voltage 12 and 32 respectively)

h01  h49

Harmonic 01  Harmonic 49

ThdV

Factor of total harmonic distortion of voltage

freq

Network frequency

Phseq

Phase sequence indicator

"123" correct

"132" inverted

"023" null voltage on black wire

"103" null voltage on red wire

"120" null voltage on blue wire

"100" null voltages on red and blue wires

"020" null voltages on black and blue wires

"003" null voltages on black and red wires

Tab. 1: Symbols used in VOLTAGE function

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 103 104

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Amprobe DMIII-Multitest Power-Quality-Recorder Manual do Utilizador Página 49