Procedures for Testing with the DX Host
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8.
Use the
Increase Current Display Scale
(
I+)
or
Decrease Current Display Scale
(
I-)
icons as needed to adjust the current’s scale.
a.
The
Status Bar
displays a countdown timer for each of the DC test run as shown
in the following example. The IR (MegOhm) test runs for 60 seconds, DA runs
for 180 seconds, and the PI test runs for 600 seconds. Conventional DC HiPot
runs for 60 seconds.
Figure 80. Status Bar with Countdown Timer.
b.
As each test progresses, the strip just above the
Status Bar
displays the test
results as each test completes.
Conduct a Step Voltage Test
If needed or preferred, conduct a step voltage test following the PI test.
NOTE: Incremental steps have the advantage of quantifying the voltage at which a specific HiPot test fails
compared to the pass/fail results of the conventional test.
1.
Touch the
Fast
or
Slow
icons as needed to set the ramp rate.
2.
Use the
Voltage Output Control
knob to raise the voltage to the next step (1000 volts
for this example).
3.
Touch the
Step
icon to program/set a 60-second test. The timer will begin the count
down. Repeat the process for each step until you complete the second to the last step.
(1500 volts is the third step for this example.)
4.
For the last step, after raising the voltage level to the desired maximum voltage for your
motor, touch the
DC HiPot
icon to complete the process. (For this example, we use
2000 volts for the last step.)
5.
When the test completes, and
Lock PTT
was selected, touch the
Lock PTT
icon to
unlock and release the testing process. Otherwise, release the
Start (PTT)
button,
and
allow the unit to discharge completely before disconnecting test leads.
6.
If you will be conducting a Surge test, do not disconnect high-voltage test leads.
NOTE: The HiPot overcurrent trip indicator detects any arc-over in the insulation and immediately stops
testing. The overcurrent trip will remove the high voltage from the test leads, stop the test, and display an
ARC DETECTED message on the front panel display. If you press the
Push To
Test
button, it resets the trip
circuitry, removes the HIPOT TRIP message, and readies the tester for a new test.
7.
Touch the
Save
icon to save the test results to the active folder and active record.
Conduct a Conventional DC HiPot Test
Alternatively, you can conduct just a conventional DC HiPot test to complete your DC testing.
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...
Page 156: ...megger com 146...
