Vanguard TRM-20_40 User Manual

Page 34

TRM-20 AND TRM-40 USER’S MANUAL

REV 1

After the TRM finishes its internal calibration, the following screen will be displayed:

This is only an informational screen to remind the operator that a test is in progress. The
display duration of this message depends on the size of the winding’s inductance.

l. The TRM determines when the resistance reading is stable and displays the resistance

values on the LCD screen as shown below:

The TRM will continue the test and update the resistance values on the LCD screen.
While the test is in progress, you can press the

[ENTER]

key to save the current

readings from the LCD screen to the TRM’s internal working memory. You can store up
to 99 readings per test.

NOTE

Although this process can be used to store multiple readings when testing a
Load Tap Changer (LTC) or Voltage Regulator, a more convenient method is
also available. Please see section 3.10 for information about performing an
LTC or Voltage Regulator test.

If the

[ENTER]

key is pressed, the data is saved and the following screen will be

displayed on the LCD screen:

TEST IN PROGRESS 14

===

SAVING TEST

===

I = 10.01 AMPS

R1 = 1.465

R2 = 1.448

** XFMR ENERGIZED! **

TEST IN PROGRESS 14

I = 10.01 AMPS

R1 = 1.465

R2 = 1.448

*XFMR CHARGING*

please wait...

** XFMR ENERGIZED! **