C H A P T E R 7 – T E S T S A N D T E S T C O N D I T I O N S
AT5600 User Manual 98-119 issue 14 Page 133
7.24. ANGL – Impedance Phase Angle
Where Used
The impedance phase angle
test measures the angle of
the impedance vector Z, as
shown in the diagram. It
represents the phase difference
between the fundamental
current flowing through a
winding and the fundamental
voltage across it. This test is
normally used for audio and
telecommunication transformers
along with the Z test to check
the complex impedance
presented to the transformers input and output
Measurement Conditions
An AC voltage is applied across the winding under test, the complex impedance
is determined from measurement of the test voltage and current flowing.
To set the test voltage or current you will need to know the expected impedance
of the winding at the test frequency.
Select the test voltage or current from the table below; find the correct impedance
range for your winding and read off the test voltage or current.
Please also see
14.6.20 for specific advice on programming the test, and
10.2.24 for test accuracy specification
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