Voltech AT360, Руководство пользователя

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T
ESTS AND
T
EST
C
ONDITIONS
P
AGE
7-48 V
OLTECH
AT
I
U
SER
M
ANUAL
Programming the Test Using the PC Test Editor
Choose the integration period (normally ‘Medium’) and enter the terminals to
be measured. The ‘Primary Terminals’ are where the test signal will be applied;
the ‘Secondary Terminals’ will be short-circuited together.
Note that more than one secondary can be short-circuited at the same time by
adding more of the available terminals to the ‘used’ section of the dialogue.
NOTE:
Because leakage inductance is measured with a secondary winding
shorted out, be careful to choose a test signal that will not cause excessive
currents to flow. This is particularly significant in transformers where the
turns ratio is very high and the shorted winding has only a few turns.
If, for example, the primary winding has 300 turns, and the secondary 3
turns, a test current of 10mA flowing through the leakage inductance on the
primary side will give rise to a current of 1 Amp flowing in the shorted
secondary winding.