Voltech AT3600 User Manual page 114

P T
ROGRAMMING ESTS
4.5. LSB
The inductance of a transformer winding when a bias current is flowing may be tested
using series or parallel equivalent circuit models. Initially the (dc) bias current is set
up and allowed to stabilize. An ac voltage is applied across the selected winding; the
voltage across and current through the winding are then measured using harmonic
analysis. The measured voltage is divided by the current to obtain a complex
impedance and the inductance is calculated .
On selecting 'LSB Inductance with Bias (Series cct)' or 'LPB Inductance with Bias
(Parallel cct)' from the Available Tests window, a dialogue box will be displayed.
or:
To program the test:
1. Enter the signal, frequency and bias current required for the test.
P 3.4.8.
AGE
LPB - I
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OR ARALLEL
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