HT Italia VEGA 76, User Manual, Page: 19 / 60

VEGA 76
EN - 17
Symbols Description Advised settings
START:MAN
The recording of all selected parameters will start at 00 seconds
after pressing
START/STOP (see chapter 7).
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STOP:MAN
The recording of all selected parameters will be interrupted
manually by pressing
START/STOP (see chapter 9).
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START:AUTO
STOP:AUTO
The recording of all 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 chapter 7).
INT. PERIOD
The value of this parameter determines every how many seconds
the values of
all the selected parameters will be memorized
(see chapter 16.4.1). Available choices:
5sec, 10sec, 30sec, 1min, 2min, 5min,10min, 5min, 30min,
60min.
15min
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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
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HARM REC.
OFF = the instrument will not record any voltage or current
harmonic selected
ON = the instrument will record Voltage Anomalies (voltage Sag
and Surge) (see paragraph 16.1)
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ANOM REC.
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.
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Single phase: V1
3-wire V
12
V
32
V
31
4-wire V
1
, V
2
, V
3
THD, DC, 01...49
Voltage Total Harmonic Distortion, DC Component, 01..49
Harmonics respectively
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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-wire three
phase system
b) Voltage Phase to Phase for 3-wire three phase system
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Single phase: 230V
3-wire: 400V
4-wire 230V
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-wire.
Vref = 120, LIM+= 6%, LIM-=10% =>
High Lim = 127.2V, Low Lim = 108.0V
The Instrument will detect a voltage Anomalies if the RMS
Voltage Values (calculated every 10ms) beyond the above
calculated thresholds (see paragraph 16.1).
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Single phase: 120V
3-wire: 480V
4-wire 277V
I1, I2, I3, IN
RMS value of the current of phase 1, phase 2, phase 3 and of the
neutral respectively.
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Single phase: I1
3-wire: I1 , I2 , I3
4-wire I1 , I2 , I3 , IN
THD, DC, 01..49
Current Total Harmonic Distortion, DC Component, 01..49
Harmonics respectively
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THD,01,03,05,07