Quick start manual

STER PMU Quick Start Manual Working with the instrument
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IN I3 C B A I1
L1
L3C
N
A
I2
L2 B
Figure 4.11: Wiring configuration for a 3-phase 4-wire system
Note that for direct measurement of currents at LV systems, xxxA/1V clamp-on current sensors have to be
used.
3-WIRE (3W) 3-PHASE SYSTEM
To configure the instrument for 3-wire (3W) measurements, start by entering the MEASUREMENT SETUP menu as
described before (see Fig. 4.1). Using the up ( ) and down ( ) keys select the Measurement type menu item,
and make sure that 3W setting is selected using left ( ) and right ( ) keys:
Figure 4.12: Communication setup screen for 3-wire measurements
To exit the menu and apply settings, press the to exit the menu, and then confirm the action with .
Connecting the instrument to the grid should be done according to the following figure: