Configuring Temperature/ Resistance test. SKF Baker AWA-IV 4 kV, Baker AWA-IV 12 kV, Baker AWA-IV 12 HO, Baker AWA-IV Series, Baker AWA-IV 2 kV

Test procedures

9) The new Test ID will be displayed and all tests will be turned off.

10) Turn on all required tests by clicking the ON/OFF buttons in the left-most column.

The buttons turn green when they are on.

Figure 87. New Test tab view with new Test ID created and selected. All tests turned on.

Configuring Temperature/ Resistance test

1) The temperature and resistance tests share the same setup window. Click on either the Temperature or Resistance test configuration buttons; by default, they are labeled Manual or 3 Lead/High V . The Temperature/ Resistance Test setup window will appear next.

2) Because the Temperature entry step has been selected, the Temperature Enable radio button is green.

3) Click on the Manual Temperature Entry radio button.

NOTE

The Baker AWA-IV will accept both ° C (Celsius) or ° F (Fahrenheit) temperatures and a temperature range of -32° C to 250° C. If you choose not to use

Temperature entry, click on the radio button and it will be disabled (grayed out).

PUB CM/I4 71-015 EN V13.2 Static Motor Analyzer—Baker AWA-IV User Manual 85

Test procedures

4) Because the resistance test was chosen, the Resistance Enable radio button is also green. The motor in this example is wye-wound, which is indicated on the window and can be changed via the motor’s Nameplate tab.

Figure 88. Temperature/Resistance test parameters.

5) The 3 Leads and Automatic radio buttons will be selected by the software for the

3-phase motor. The analyzer will automatically acquire the resistance readings.

6) Depending on the model, some analyzers are equipped with a separate set of resistance test leads to perform a lead-to-lead low-voltage resistance test.

Resistance values must be greater than 0.500 ohms for high-voltage leads. If the high-voltage leads are used on a motor with resistances less than 0.500 ohms, the analyzer will prompt the operator to switch to low-voltage leads. For this example, the AWA model being used does not have the low-voltage leads, so there is no Res

Leads box to check.

7) Check the Delta R (%) box and ensure it is set to 10%. If the spread of resistance readings are more than 10%, the motor will fail.

8) Because temperature is enabled, the Correct to box is checked and defaults to 25° C and the value for copper is set to the IEEE 118 constant.

9) Target Corrected Resistance is a feature that refines the pass/fail criteria. If checked, the analyzer will fail a motor if the readings are not within tolerances. For example, the resistance reading for a motor can be taken using a DVM. Let’s say that the reading is 3.1 ohms. In this case, we can check the Target Corrected Resistance box and enter the value of 3.1 +/- 10%. One issue with using this feature is that enabling target corrected resistance makes this Test ID specific to a single motor. If resistance data is not available, or you want to be able to use the Test ID for other motors, do not enable this feature.

10) Click on the Close button.

86 PUB CM/I4 71-015 EN V13.2 Static Motor Analyzer—Baker AWA-IV User Manual