Procedures for Testing with the DX Host
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Determining a Known-good Coil to Use as a Reference
Many of the testing processes—such as single-coil surge and armature testing—and their
variations use a reference for comparing waveforms and tests results from a series of coils (or
armature bars/windings) tested. A “known-good” coil is used in the first steps of the process to
obtain the reference data, then subsequent coils (or armature windings) are tested using the
same process and are compared to the reference to determine their pass/fail status.
If you have not already established a reference for your testing, this process shows you how to
identify a known-good coil so you can set the reference. The process locks in the reference
waveform that will be used to perform subsequent tests.
1.
Select a coil that you expect is good and connect it to the tester as described on the
previous page. (For armature bar-to-bar testing, bars 1 and 2 are commonly used as a
starting point; for armature span testing bars 1 and 5 are common.)
2.
Press the
Surge
test icon.
3.
Push and hold the
Start
(
PTT
) button. The
Ramp Rate and Waveform Zoom
popup
menu appears.
Figure 102. Ramp rate and waveform zoom icons
.
4.
Alternately use the
Fast/Slow Ramp Rate
icons to control the rate of voltage change
while rotating the
Voltage Output Control
knob to set the test voltage for the series.
5.
Use the
Waveform zoom
icons to adjust the display scale of the surge waveform.
When you have obtained a good waveform, release the
Start
(
PTT
) button.
6.
Test the coil several times to see if the connections, the system, and the coil produce
consistent closely-repeatable results. If not, recheck connections and the coil for
damage. Replace the coil, if necessary, with one that you expect is good.
7.
When you have determined that you have a good coil, and you are satisfied with the
voltage level established at the last test along with the waveform acquired, touch the
Set
Reference
icon
.
8.
After you have established the reference, you will want to set up the tester to make it
easier to test subsequent coils.
Summary of Contents for Baker DX
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Page 10: ...Table of Contents viii Baker DX 71 030 User Guide EN V10 www megger com...
Page 28: ...Baker DX Instrument Overview 18 Baker DX 71 030 User Guide EN V10 www megger com...
Page 38: ...Baker DX User Interface Overview 28 Baker DX 71 030 User Guide EN V10 www megger com...
Page 58: ...Setting up the Baker DX Tester 48 Baker DX 71 030 User Guide EN V10 www megger com...
Page 149: ...megger com 139 RIC Templates Figure 141 RIC template 1...
Page 150: ...RIC templates 140 Baker DX 71 030 User Guide EN V10 www megger com Figure 142 RIC template 2...
Page 155: ...Index megger com 145...
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