PROGRAMMING TESTS VOLTECH AT3600 USER MANUAL
PAGE 3.4.12. VPN 98 - 024 TEST PROGRAM EDITOR
4.7. D – DISSIPATION FACTOR OR TANδ
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.
Choosing the test signal
For optimum accuracy and performance, use the test conditions chosen for
capacitance in a later section of this chapter.
The test conditions can also be determined automatically by the AT3600 according to
this table:
Note that a ‘fixed’ signal cannot be used with an ‘auto’ frequency.
To program the test using the PC Test Editor:
Choose the integration period (normally ‘Medium’) and enter the terminals to be
measured.
Use the Editor’s ‘measure’ button (together with a sample part) if you are unsure of
how to choose the test conditions.
Signal
Specified voltage Specified current Auto
Frequency
Specified Specified Specified
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