Voltage Transformer
5 - 21
VT Electronics
Use the VTElectronics test card to test the ratio of non-conventional electronic
voltage transformers with a very low level secondary voltage.
To carry out this test, disconnect the plug of the electronic transformer’s
secondary side from the protection relay, plug it into CPC 100 V2AC input, and
inject voltage from the 2kV AC output to the electronic transformer’s primary
side.
Figure 11:
Setup for an electronic
voltage transformer
ratio test
electronic voltage transformer
electronic
protection
relay with
low
voltage
input
Shielded cable with
twisted wires
Please refer to the note below.
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