Man. NVIP3 – Rel 1.3 EN (UK)
- 45 -
If NanoVIP
3
detects a transient, the following information will be displayed:
•
Channel(s) in which the transient has occurred.
•
Transient waveform.
•
Relevant peak value.
To scroll through the transients that occurred at the same time as the one being displayed (all the channels on
which a transient has occurred are listed in the heading of the page), use the
and
keys.
To exit and return to the Transients Menu (Sect. 5.2.10), press
(Exit).
5.2.10.2 - Inrush Current Setup
On any of the Transients Menu pages (Sect. 5.2.10), select "Inrush Current" to access the configuration page for
analysing said phenomenon.
The following parameters can be set:
•
Channels to be measured (Sect. 5.2.10.2.1).
•
The current RMS threshold (Sect. 5.2.10.2.2).
•
The duration of the analysis (Sect. 5.2.10.2.3).
•
Automatic start (Sect. 5.2.10.2.4).
•
Manual start (Sect. 5.2.10.2.5).
5.2.10.2.1 - Input Selection
The two options available are "Three-phase and neutral inputs" (3PH and N) or "Auxiliary input".
NOTE
: this field does not indicate the electrical connection; therefore, the channels will always be identified as
3PH and N, even if a single phase, two-phase or three-phase without neutral connection is being used.
5.2.10.2.2 - Current Threshold
This value indicates the current threshold expressed in RMS amperes over which the instrument will identify
current as "inrush current". A threshold slightly higher than the nominal I of the connected instrument should be
set.
As NanoVIP
3
cannot know the value of the inrush current to be measured, it will try to use the most appropriate
amplification scale based on the threshold set by the user to perform as accurate a measurement as possible.
However, the estimate may be incorrect and the instrument may suggest performing a new measurement (Sect.
5.2.10.3).
5.2.10.2.3 - Analysis Duration
This field allows the user to set the maximum duration (in seconds) of the inrush current analysis.
5.2.10.2.4 - Automatic Start
If automatic start is selected, the instrument will wait for the inrush current to occur, and then detect it
automatically (Sect. 5.2.10.3).
NOTE
: If an unsuitable threshold is set, the instrument may not detect any event; it will remain in standby
mode. To exit this condition, press
.
