OPERATION
AVTMTTR100-ENG Rev 6 Nov 2015
61
Test T-Type Transformers
A screen, containing connection information in text form, will be displayed for
each phase when testing a T- type transformer in the Quick test mode. Connect
the TTR100 test leads to the transformer to be tested as per the information
displayed and press 1 to start test or press 2 to return to the previous screen.
At the completion of the test, TEST RESULT 1 screen is displayed containing the
measured turn ratio for the phase being tested, in addition to a test number.
TEST RESULT 2 screen will be displayed by pressing the right scroll key. Vector
group, Excitation current (no-load), and Phase displacement results are
displayed. From this screen one can return to the TEST RESULT 1 screen, go to
the TEST RESULT 3 screen, or return to the MAIN MENU screen by selecting
the appropriate displayed key. Returning to the MAIN MENU screen will erase
any test results that have been accumulated.
TEST RESULT 3 screen displays DC winding resistance of the high side and the
low side windings, provided that the function is activated. From this screen one
can re-test the phase, continue testing the other phase, return back to the
previous TEST RESULT screen, or return to the MAIN MENU screen by
selecting the appropriate displayed key.
Selecting CONTINUE, Phase B connection information will be displayed. The
testing of phase B will begin by selecting 1 and the results are displayed in TEST
RESULTS 1, 2 & 3, as mentioned above.
Selecting CONTINUE at the conclusion of the Phase B test, one can provide
HEADER information, PRINT header and the test results, STORE the test
results, or return to either the previous TEST RESULT screen or to the MAIN
MENU.
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