Amprobe DMIII-Multitest Power-Quality-Recorder - Manual (Page 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