MI 2792 PowerQ4 Plus
Recording Practice and Instrument Connection
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Include events and alarms capture if necessary
After setting recorder, recording can be started. (see section 3.9 for recorder details).
Note:
Recording usually last few days. Assure that instrument during recording session
is not reachable to the unauthorized persons. If necessary use LOCK functionality
described in section 3.17.6.
Step 6: Measurement conclusion
Before leaving measurement site we need to
Preliminary evaluate recorded data using TREND screens.
Stop
recorder
Assure that we record and measure everything we needed.
Step 7: Report generation (PowerView v2.0)
Download records using PC software PowerView v2.0 and perform analysis. See
PowerView v2.0 manual for details.
4.2 Connection setup
4.2.1 Connection to the LV Power Systems
This instrument can be connected to the 3-phase and single phase network.
The actual connection scheme has to be defined in CONNECTION SETUP menu (see
Figure below).
Figure 4.2: Connection setup menu
When connecting the instrument it is essential that both current and voltage connections
are correct. In particular the following rules have to be observed:
Clamp-on current clamp-on transformers
The arrow marked on the clamp-on current transformer should point in the
direction of current flow, from supply to load.
If the clamp-on current transformer is connected in reverse the measured power
in that phase would normally appear negative.
Phase relationships
The clamp-on current transformer connected to current input connector I
1
has to
measure the current in the phase line to which the voltage probe from L
1
is
connected.
