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Megger TTR310 - Figure 6-9. Phase a Test Result Screen

Megger TTR310
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M
AVTMTTR310 Rev 8 May 2016
80
“Select 1 – REPEAT TEST 2 – CONTINUE 3 – ABORT TEST”
If REPEAT TEST is selected, the test set will re-test phase B or C.
If CONTINUE is selected, the test set will start testing of phase C (if an error
message appeared during phase B testing).
If ABORT TEST is selected, the Main Menu screen will appear.
If one of these error messages appears, verify the abnormal condition by taking a
repeat measurement before attempting to take any corrective action. If an error
message appears during phase A testing, and repeat measurement is still bad, it is
impossible to continue testing of the transformer, and troubleshooting procedure
should be started by testing each phase of the three-phase transformer separately as
a single phase transformer.
THREE PHASE TRANSFORMER TEST
TEST: nnn ID:A13579CV0246 DIAG nn Ddnnn
TAPS TESTED: 3 - 16R
H VOLTAGE: 25000 X VOLTAGE: 5000
CALCULATED TURNS RATIO: 5.000
TEST VOLTAGE: 80V
A BC
RATIO 5.102
% DEVIATION 2.04
PHASE (min) 1.2
Iexc (mA) 20.6
SELECT: 1-REPEAT TEST 2 CONTINUE
Figure 6-9. Phase A Test Result Screen
1 REPEAT TEST: This selection allows repeat testing of the same phase
(last phase tested, A,B, or C). Refer to following
paragraphs.
2 CONTINUE: This selection will initiate testing of the next phase.
Refer to following paragraphs.
You may repeat testing of the phase (select 1 REPEAT) or continue testing the
transformer (select 2 CONTINUE). If 2 is selected, phase B will be tested. After
completion of the phase B testing, the test result will be displayed next to phase
A test results. The same two selections (1 REPEAT and 2 CONTINUE) are
shown on the screen. Selection 1 allows repeating of the phase B testing.
Selection 2 starts the phase C testing.
After completion of the phase C testing, the test result will be displayed next to
phase B test results. The same two selections are shown on the screen. Selection

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