7) Check the
Max Delta R (%)
box and ensure it is set to 10%. If the spread of
resistance readings are more then 10%, the Baker AWA-IV will fail the motor.
8) Because temperature is enabled, the
Correct to
box is checked and defaults to 25°C
and the copper’s IEEE 118 constant.
9) Target Corrected Resistance is another tool that further refines the pass/fail criteria.
If checked, the Baker AWA-IV will fail a motor if the readings are not within
tolerances. For the example motor, the resistance reading taken using a DVM is 3.1
ohms. Therefore, we can check the
Target Corrected Resistance
box and enter the
value of 3.1 +/- 10%. Enabling target corrected resistance makes this Test ID specific
to the example motor. If resistance data is not available, do not enable this feature.
10) Click on the
Done
button.
Configure Meg-Ohm/PI/HiPot tests
1) To configure the Meg-Ohm/PI/HiPot tests, click on one of the three buttons to the
right of the Meg-Ohm/PI/HIPOT buttons to bring up the
DC Tests
window. For this
motor, the Meg-Ohm and PI tests will be run at 500V while the HiPot test will be run
at 2000V. Consult IEEE 43/95 or another appropriate standard to determine test
voltages.
2) Because this is a small motor, the PI test will run as a DA test only by checking the
DA Only
box. Doing a full PI test would not likely yield useful information.
The other option—
DA If IR>5000 @1m
—sets up the Baker AWA-IV to automatically skip
the PI test in favor of the DA test at three minutes if the insulation resistance (IR) is greater
than 5000 Meg-Ohms at the one-minute mark. Insulation resistance readings 5000 Meg-
Ohms or greater at one minute is the generally accepted criteria for aborting the PI test.
Figure 88.
DC Test parameters.
After the DC Tests are configured as shown above, click the
Done
button to return to the
main test window.
88
SKF Static Motor Analyzer—Baker AWA-IV User Manual
Test procedures
Summary of Contents for AWAIV-12
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Page 16: ...2 SKF Static Motor Analyzer Baker AWA IV User Manual About this manual ...
Page 28: ...14 SKF Static Motor Analyzer Baker AWA IV User Manual Baker AWA IV Instrument Overview ...
Page 88: ...74 SKF Static Motor Analyzer Baker AWA IV User Manual Database management and maintenance ...
Page 90: ...76 SKF Static Motor Analyzer Baker AWA IV User Manual Set up of the Baker AWA IV analyzer ...
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Page 124: ...110 SKF Static Motor Analyzer Baker AWA IV User Manual Special features of the Baker AWA IV ...
Page 166: ...152 SKF Static Motor Analyzer Baker AWA IV User Manual Typical winding faults ...
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