TRT3x Getting Started
M-T03XNN-205-EN 10
3.2 Setting the Measurement Parameters
Five seconds after the first (initial) message on the display, TRT3x automatically changes the display to the
CONFIGURATION menu and the green LED lights up. By pressing SET the user can switch between the
CONFIGURATION menu and the MEMORY menu.
Press UP/DOWN in the HV CONFIG field to select the test mode to be performed. A list of the available test
modes is shown in the Tables 2 and 4.
Table 2: Available options in the configuration menu
Phase by phase test
using single-phase
voltage in turns
&
the true 3-phase test
using 3-phase voltage
Star winding with neutral point
Zigzag with neutral point
Automatic vector group
detection
Single phase test
using single-phase
voltage
Only true three-phase test
True 3-phase test
using 3-phase voltage
Press ENTER to choose one of the available options in the configuration menu.
1. If the vector group is selected, TRT3x will perform both the true three-phase test by applying true three-
phase test voltage and the phase by phase test by applying single phase test voltages to all phases in
turn.
2. If SINGLE is chosen, TRT3x will test a single phase transformer by applying the single phase test voltage
between 1U/H1/A and 1N/H0/N.
3. If CT is chosen, TRT3x will test a current transformer by applying the single phase test voltage between
1U/H1/A and 1N/H0/N.
4. If AUTO is chosen, TRT3x will display the special menu for autotransformers to the user.
5. If the AVGD option is selected, TRT3x will automatically detect the vector group of the transformer under
test.
6. If TRUE 3~ TEST is selected, TRT3x will perform the true three-phase test by applying the true three-
phase test voltage.
Table 3 lists the available vector groups in this menu.
Table 3: Available vector group configurations
D-d, D-z, D-zn, Z-d, ZN-d, Y-y, Y-Yn, YN-y, YN-yn
D-y, D-Yn, Y-d, Y-z, Y-zn, Y-d, YN-z, YN-zn, YN-d, Z-y, Z-yn, ZN-y, ZN-yn
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