Amprobe DMIII-Multitest Power-Quality-Recorder - Manual (Page 46)

AMPROBE
DMIII MULTITEST
EN-44
Symbols Description Advised settings
START:MAN
The recording of all the selected parameters will start at 00
seconds after pressing START/STOP (see paragraph 10).

STOP:MAN
The recording of all the selected parameters will be interrupted
manually by pressing START/STOP (see paragraph 10).

START:AUTO
STOP:AUTO
The recording of all the selected values will be started /
interrupted at the set dates and times. In order to start the
recording the user will have to press START/STOP to set the
instrument in Stand-by mode until the start date and time
previously set (see paragraph 10).
INT. PERIOD
The value of this parameter determines how many seconds
the values of all the selected parameters will be memorized.
Available choices:
5sec, 10sec, 30sec, 1min, 2min 5min, 10min, 15min, 60min.
15min

HARM REC.
ON = the instrument will record the values of the selected
voltage and current harmonics corresponding to the
voltages and currents selected in the corresponding
pages “Voltage” and “Current”.
Example: If the following Parameters are selected:
a) Phase Voltage 1 and 2, Thd, Harmonics 1,3,5.
b) Phase Current 2 and 3, Thd, Harmonics 3,5,7.
The instrument will record:
a) The Phase Voltage 1 and 2, Thd and Harmonics 1,3,5
of the Phase Voltage 1 and 2 while it will not record
anything about Phase Voltage 3
b) The Phase Current 2 and 3, Thd and Harmonics 3,5,7
of the Phase Current 2 and 3 while it will not record
nothing about Phase Current 1

OFF = the instrument will not record any voltage or current
harmonic selected
ANOM REC.
ON = the Instrument will record Voltage Sag and Surge (see
paragraph 16.6)

OFF = the instrument will not record any voltage Sag and
Surge
V1, V2, V3
V12, V23 or V32,
V31
RMS value of the voltage of phase 1, phase 2, phase 3
respectively, values of the phase-to-phase voltages 1-2, 2-3 or
3-2 and 3-1.

Single phase: V1
3 wires V
12
V
32
V
31
4 wires V
1
, V
2
, V
3
Thd, DC, 01...49
Voltage Total Harmonic Distortion, DC Component, 01..49
Harmonics respectively

Thd,01,03,05,07
Vref
(only if ANOM. REC
flag has been set
ON)
RMS reference value for Voltage used in Voltage Anomalies
detection (Voltage Sag and Surge). The Reference is:
a) Voltage Phase to Neutral for Single Phase and 4 wires
three phase system
b) Voltage Phase to Phase for 3 wires three phase system

Single phase: 110V
3 wires: 480V
4 wires 277V
LIM+, LIM-
(only if ANOM. REC
flag has been set
ON)
High and Low Voltage Percent threshold used in Voltage
Anomalies detection (Voltage Sag and Surge).
Example: Three Phase System 4 wires.
Vref = 110, LIM+= 6%, LIM-=10% =>
High Lim = 121.0V, Low Lim = 99.0V
The Instrument will detect a voltage Anomalies if the RMS
Voltage Values (calculated every 10ms) beyond the above
calculated thresholds (see paragraph 16.6).

+6% / -10%
I1, I2, I3, IN
RMS value of the current of phase 1, phase 2, phase 3 and of
the neutral respectively.

Single phase: I1
3 wires: I1, I2, I3
4 wires I1, I2, I3, IN
Thd, DC, 01..49
Current Total Harmonic Distortion, DC Component, 01..49
Harmonics respectively

Thd,01,03,05,07