METREL MI 3399, Instruction Manual With Exercises

Page: 136 / 272

Power and Voltage Quality Trainer AD 2
– MI 3399
136
Figure 3-1: 3-phase 4-wire electrical system
In order to “simulate” this connection, in the Application Trainer, the instrument and
current clamps should be connected to the Application Trainer as shown in the figure
below.
Instrument
N
L1 L2 L3
GN
D
N
I1 I2 I3 IN
I1 I2 I3 IN
1 2 GND/N 3
Training corner
Figure 3-2: 3-phase 4-wire system connection to the Application Trainer
3.2 Instrument Setup
In order to measure power parameters correctly it is essential to properly setup the
instrument.
Procedure how to do this is described in the next few figures. First, go to the
MEASUREMENT SETUP menu and select the CONNECTION SETUP submenu.
CONNECTION MENU is shown in the figure below.
Figure 3-3: Connection setup menu
1.
Select Nominal voltage L-N and press the key
2.
Set nominal voltage and ratio as shown in the figure below
ENTER