Voltech AT3600 User Manual page 321

V AT3600 U
OLTECH SER
1.22. A
W
M
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. You can measure this using the 'Z' (Impedance)
test.
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.
T T C
ESTS AND EST ONDITIONS
M
ANUAL
– I
NGL
U
HERE SED
EASUREMENT
Impedance Range
→
1MΩ 100kΩ
→
100kΩ 10kΩ
→
10kΩ 1kΩ
→
1kΩ 100Ω
→
100Ω 10Ω
→
10Ω 1Ω
→
1Ω 100mΩ
→
100mΩ 10mΩ
→
10mΩ 1mΩ
P
MPEDANCE HASE
The impedance phase angle test measures the
angle ∅ of the impedance vector Z, as shown
in the phasor diagram. It represents the phase
difference between the fundamental current
flowing
fundamental voltage across it. This test is
normally
telecommunication transformers along with
the Z test to check the complex impedance
presented to the transformers input and
output.
C
ONDITIONS
Test Voltage
5V
5V
5V
3V
0.5V
100mV
10mV
1mV
-
VPN 98 - 024
T
RANSFORMER
A
NGLE
through a winding
used for audio
Test Current
-
30µA
300µA
3mA
10mA
50mA
50mA
50mA
50mA
T
ESTS
and the
and
P 7.1.41.
AGE