2.38 LSBX - Inductance with External Bias (Series Circuit)
This test requires the use of one or more Voltech DC1000 Precision DC Bias
Current Sources. Contact your Voltech sales office for details.
The inductance of a transformer winding while an external bias current is
flowing through it may be tested using series or parallel equivalent
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 is then measured using harmonic analysis.
The measured voltage is divided by the current to obtain a complex
impedance and the inductance is calculated.