TRT3x Troubleshooting Guide
M-T03XNN-205-EN
16
5 Troubleshooting Guide
In case the operator experiences problems with wrong results while measuring a three-phase transformer, a
recommendation is to perform the steps listed below:
Check that all connections to the transformer side are properly done. If everything is OK and still have
wrong results, continue with the next 3 steps.
1. Disconnect all test cables from the transformer side. Connect the primary side clamps (red color marked)
to the secondary side clamps (white color marked) matching the colors of the cables; red to red, black to
black, yellow to yellow (white to white) and blue to blue as shown on the figure below. After that select the
TRUE 3~ TEST from the menu and perform the test three/four times, using each test voltage. Save all
results.
2. Connect the shorted primary and secondary cables (clamps) of TRT3x instrument to the primary side of
the transformer as shown in the figure below. Perform the test three/four times, using each test voltage.
Save all results.
3. Take the secondary cables (clamps) of TRT3x instrument from the primary side of the transformer and
connect them to the secondary side of the transformer as shown in the figure below. Perform the test
three/four times, using each test voltage. Save all results.
Send all results to the manufacturer via e-mail address
together with the
description of the operating conditions and all relevant information during the test, to be able to analyze the
problem.
Figure 5-1:
TRUE 3~ test
Short circuited clamps
Figure 5-3:
TRUE 3~ test
Figure 5-2:
TRUE 3~ test
Short circuited clamps
connected on the
transformer primary
side
