TRANSFORMER TESTS VOLTECH AT3600 USER MANUAL
PAGE 7.1.68. VPN 98 - 024 TESTS AND TEST CONDITIONS
1.42. ZBX - Impedance with External Bias
DC Bias Measurement
Range
Test
Voltage
Test
Frequency
Basic
Accuracy
0.1A to 250A
1mΩ to 1MΩ
1mV to
5V
20Hz to
3MHz
0.2%
This test requires the use of one or more Voltech DC1000 Precision DC
Bias Current Sources. Contact your Voltech sales office for details.
The Winding Impedance with External Bias test measures the impedance of
a selected winding while applying a DC current from the DC1000 through
the winding. An AC voltage is also applied across the winding from the AT.
This test can be used with inductors to measure the change in impedance
with a bias current.
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