Voltech AT360, User Manual

Page: 418 / 470

T
ESTS AND
T
EST
C
ONDITIONS
P
AGE
7-120 V
OLTECH
AT
I
U
SER
M
ANUAL
7.1.32 ZBX - I
MPEDANCE WITH
E
XTERNAL
B
IAS
DC Bias Measurement
Range
Test
Voltage
Test
Frequency
Basic
Accuracy
0.1A to 250A
1m
Ω
to 1M
Ω
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.
On selecting “ZBX Impedance with External Bias” from the ‘available tests’
window, the following dialog box is displayed: