PROGRAMMING TESTS VOLTECH AT3600 USER MANUAL
PAGE 3.4.14. VPN 98 - 024 TEST PROGRAM EDITOR
4.8. LL OR LLO - LEAKAGE INDUCTANCE
The Leakage Inductance for a particular transformer is tested by measuring the
inductance of a ‘primary’ winding when one or more ‘secondary’ windings have
short-circuits applied.
Select either ‘LL Leakage Inductance’ or ‘LLO Leakage Inductance with Offset’
from the available tests window, to display one of the following form fill-in dialogue
boxes as appropriate.
LL (Leakage Inductance) LLO (Leakage Inductance with Offset)
To program the test :
1. Enter the signal and frequency required for the test.
Note that the signal is normally entered as a current by selecting the ‘uA’ or 'mA'
button; but you may optionally enter it as a voltage by selecting the 'mV' button.
(Refer to Chapter 7 - ‘Test Conditions’, if you are unsure of the voltage and
frequency to use.)
Note also that the Measure button may be used here as outlined in section 3.9,
with the combinations of test parameter specification shown in the following
table:
Signal
Specified current Specified voltage Auto Auto
Frequency
Specified Specified Specified Auto
2. Select (mouse click the button) the integration time you require.
'Medium' is the default setting. 'Long' will give more stable readings (for tighter
limits) at the expense of an increased test time, and 'Short' will test at the
maximum speed, but may give a slightly noisier reading.
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