ADWEL WTD-501, Operating Manual, Page: 32 / 57

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To create first group click on Create . Highlight Group 1 after it appears in the list to the left
of the Create button. Enter the Description (up to 20 characters). Enter the slot and wedge
numbers to be tested (e.g. 1-3 or 14-15).
Select whether the WTD will follow
Wedges or Slots in the Test How field. Select Wedges
to move the probe by increasing or decreasing wedge number along the same slot number.
Select
Slots if the user chooses to move the probe rotationally along the same wedge number
testing all slots, and then move the probe to the next wedge number. Then select which
direction the WTD operator will follow for the
Slots and Wedges . For the slots, it is either
Increasing slot number or Decreasing slot number. For wedges, it is either Increasing
wedge number of Alternating .
Select
Alternating to move from low wedge number (testing does not have to start from the
first wedge) on the first slot to be tested in that group to high wedge number on that slot,
then continue at high wedge number on the second slot in that group to low wedge number
on that slot, then continue to low wedge number on third slot, and so on. If you select
Alternating and have only one slot in the group, testing should start from the highest wedge
number.
When completed, click
Save to save the group. Repeat this procedure in turn for each group
that was created (up to 10 groups). Click Remove after highlighting a group to delete that
Group. If the Operator wants to test the whole generator, click on the All Wedges box and
define how to test, as described above. In Appendix One, attached Samples indicate how to
define test areas.
The
Location Of the First Wedge must be selected ( Exciter or Turbine end of generator).
The Access control for the test must be selected. This is either PC if the WTD is controlled
from the computer, or Probe if it is controlled manually by the push-button on hand-held
probe.
Note that measurement file names are created automatically by the software: first three
letters are from Station Name, next four digits indicates year, then three digits for day in the
year and up to two digits for multiple test in one day. If necessary, the measurement file
name can be changed before the test. One of three
Calibration Modes (Predefined, Floating,
or Generated) must be selected next. AdwelPre.cal will be offered by default for
Predefined , and AdwelFlo.cal for Floating mode. Finally, select or type in the number of
Test Points per Wedge (1,2 or 3). Using Print , settings can be printed. Click OK . The
WTD Test Window will appear next.
NOTE: If multiple test points per wedge are selected, they will be indicated on screen as 1/1
for the first test point on the first wedge, 1/2 for second, etc. Testing in Random Test or
following Wedges in Sequential Test, each wedge will be fully tested (one, two or three test
points) before testing another one. However, following Slots in Sequential test, due to
rotational movement of the probe, after the first test point on the first tested wedge, next
measurement will be first test point on the same wedge number in the next slot. Second test
point on the first wedge, will be tested after finishing first test points on all wedges.