PROGRAMMING TESTS VOLTECH AT3600 USER MANUAL
PAGE 3.4.18. VPN 98 - 024 TEST PROGRAM EDITOR
4.10. TR - TURNS RATIO
You may program the AT3600 Tester to test the turns ratio between one winding and
any other.
To measure turns ratio, a test source voltage is applied to one winding, the energized
winding, and the voltages across two other windings (one of which may also be the
energized winding) are measured using harmonic analysis. The turns ratio is
measured by dividing one measured voltage by the other, and making a compensation
for the effects of winding resistance.
On selecting ‘TR Turns Ratio’ from the available tests window, a dialogue box will
be displayed.
To program the test :
1. In the fields provided, insert the voltage and frequency you require for the
test (see chapter 7 - ‘Test Conditions’).
Note also that the Measure button may be used here as outlined in section 3.9,
with the combinations of test parameter specification shown in the following
table:
Voltage
Specified Auto Auto
Frequency
Specified Specified Auto
2. 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.
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