VOLTECH AT3600 USER MANUAL PROGRAMMING TESTS
TEST PROGRAM EDITOR VPN 98 - 024 PAGE 3.4.35.
4.20. ANGL – IMPEDANCE PHASE ANGLE
The Impedance Phase Angle test can measure the impedance of a selected winding
using specified voltage (or current) and frequency conditions, and then reports the
equivalent impedance phase. An AC voltage is applied across the winding under test
and the complex impedance is determined from measurements of the voltage across
the winding and the current flowing through it. The ANGL result is the phase of this
complex impedance, it is the phase angle between the voltage and current.
This test is normally used for audio & telecommunication transformers along with the
Z (impedance) test to check the complex impedance presented to the transformers
input and output.
On selecting “ANGL Impedance Phase Angle” from the ‘available tests’ window, the
following dialogue box will be displayed:
To program the test:
1. Enter the value of voltage (or current) for the signal and the required frequency of
the test. (If in doubt, refer to Chapter 7 - ‘Test Conditions’, which lists recommended
test conditions.)
Note also that the Measure button may be used here as outlined in section 3.9. Note:
you must specify the frequency when using the ‘Measure’ button in the ANGL test.
2. Select the integration time required. '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.
3. Enter the terminal names between which the impedance is to be measured. See
terminal selection.
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