147
Figure 120 VT Demagnetization Screen –Abort
12. Upon completion of process the VT will be left in a demagnetized state
Demagnetization process is performed on an instrument transformer to remove any magnetizing forces
on the windings that can effect the accuracy and performance of the instrument transformer
7.7 Testing Voltage Transformer: Self Diagnostic
Refer to the safety instructions first before use of the equipment.
10. Verify the Power ON/OFF switch is OFF. Power the test set from a suitable source
of power (95-125 or 195-265 V50/60 Hz).
11. Connect the ground wing nut to a suitable ground.
WARNING
There is always the possibility of voltages being induced at the terminals of a test specimen
because of proximity to high voltage energized lines. A residual static voltage charge may also
be present at these terminals. Ground each terminal to be tested with a safety ground stick,
before making connections.
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