3.4.2 Winding Resistance
To check that the resistance of a winding is correct, the AT3600 applies a dc test signal to the selected winding. It then measures both the current through and the voltage across the winding, and calculates the resistance.
On selecting ‘R Winding Resistance’ from the available tests window, a dialogue box will be displayed.
To program the test:
- Select (mouse click the button) the integration time you require.
'medium' is the default setting. 'long' will give more stable readings (for tighter limits) at the expense of an increased test time, and 'short' will test at the maximum speed, but may give a slightly noisier reading.
- Enter the terminal names between which the resistance is to be measured.
Pull down (mouse click the down arrow) the list of available terminal names and click the terminal name you require.
- Select (mouse click the button) the type of limits you require and enter the values.
||Enter a nominal value and then the limits as negative and positive
||Enter minimum and maximum values.
||Enter just a minimum value.
||Enter just a maximum value.
|Note that the measure button may be used here as outlined in section 3.9.
- Select OK. The test specification will then be displayed in the program window.