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AVTMTTR320-EN Rev A Oct 2008
33
To perform a 3-phase TTR functional test proceed as follows:
1.
Turn TTR test set power off.
2.
Connect H1 lead to X1 lead, H2 lead to X2 lead, H3 lead to X3 lead, and H0
lead to X0 lead. Make sure the leads are properly connected and that H/X
pairs are not electrically in contact with each other.
3.
Turn TTR test set power on.
4.
After self-test is complete and a QUICK TEST
5.
Enter transformer type DIAG 07 YNyn0.
F
WARNING
Do not continue functional test if the diagram type
DIAG 07 YNyn0 transformer type is not listed.
Keep the leads, which are energized, clear of ground,
and personnel, and each of the other lead-pair sets.
6.
Start TEST
7.
The readings for phases A, B, and C should be:
RATIO: 1.0000 ±0.0020
PHASE(min): 0 ±5
Iexc (mA): 0.0 to 0.5
8.
If needed, (as identified on the Preference screen), perform the test
according to steps 1 through 7 for all the excitation voltages of 8V, 40 V,
and/or 80V. The readings should be the same as shown in step 7.
Содержание TTR320 Series
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