C H A P T E R 1 4 - A T E D I T OR
AT5600 User Manual 98-119 issue 14 Page 322
14.6.7. D – Dissipation Factor or Tan
To measure dissipation factor, the tester applies an AC voltage across the
selected winding, and measures the voltage across and the current through the
winding. Using harmonic analysis, the measured voltage is divided by the current
to obtain a complex impedance from which the dissipation factor is obtained.
To program the test:
1. Choosing the test signal and frequency
For optimum accuracy and performance, use the test conditions chosen for
capacitance in a later section of this chapter.
2. Choose the integration period (normally ‘Medium’).
'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. See 7.3 Explanation
of Integration.
3. Enter the Terminals to measure.
4. Choosing the test limits
% A nominal value together with + and – percentage limits.
>< Minimum and maximum values
> A minimum value only
< A maximum value only
Note: The Measure button may be used here as outlined in section 14.5.9.
5. Select OK. The test specification will then be displayed in the program
window.
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