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VEGA78
EN - 66
In the upper half plane of the graph if the harmonics are introduced into the relevant
electrical system from the mains.
In the lower half plane of the graph if the harmonics are injected into the relevant electrical
system from the mains.
The following keys are active on this page:
The up (
ZOOM+
) or down (
ZOOM-
) arrow keys zoom in or out the histogram.
The right and left arrow keys move the cursor to the right or to the left along the
harmonics.
The
F1
key (or the
PAG
item on the display) advances to the following page of saved
values, relative to phase 1 harmonics.
The
F2
key (or the
ARM V
or
ARM I
item on the dislay) switches between total voltage
and current harmonics.
The
F4
key (or the
ARM PAG
item on the display) displays the following harmonics
group. 0..4, 10..16, 22..28, 34..39..40..46..52..58..64
The
ESC
key (or the smart icon on the display) to exit the function and go back to the
“Recording analysis” page (Fig. 98)
5.5.2.4. Vectors
As an example, below are shown the screens relative to a
three phase 4-wire system
. Similar
consideration can be applied to any other selected system.This screen (Fig. 102) displays,
with graphic and numeric indications, the phase delays expressed in degrees [°] between:
Voltage V1 and V2, V2 and V3, V3 and V1.
Voltage V1 and current I1
Voltage V2 and current I2
Voltage V3 and current I3
The latter allow finding out the inductive or capacitive nature of the electrical installation. In
detail:
Positive angle: Inductive load.
Negative angle: Capacitive load.
The N-PE voltage and Neutral current vectors are also represented.
Fig. 102: Total vector diagram in three-phase 4-wire system
The following keys are active on this page:
The
F1
key (or the
PAG
item on the display) advances to the following page of saved
values relative to the voltage vector diagram.
The
ESC
key (or the smart icon on the display) to exit the function and go back to the
“Recording analysis” page (Fig. 98).
Shop for Power Metering products online at:
1.888.610.7664
www.
PowerMeterStore
.com