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9.3.2 Method 2 – Non Concurrent or Testing a Single Tap
Refer to the safety instructions first before use of the equipment.
1.
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).
2.
Connect the ground wing nut to a suitable ground.
3.
Connect the test set secondary output
SOURCE
binding posts
X1S
and
X5S
to the
secondary of the
current transformer on the desired tap.
4.
Connect the test set secondary output binding posts X1 and X5 to secondary of the current
transformer on the desired tap. Observe the polarity marks on the CT (X1 on test set is polarity
terminal).
5.
Connect the test set primary binding posts H1 and H2 to CT primary bushings H1 and H2.Observe
the polarity marks on the CT (H1 on the test set is polarity terminal).
6.
Turn Power ON/OFF switch to ON.
7.
After the boot up, in the Home Screen select the “
Ratio Test
” button
.
8.
In the Ratio test screen, deselect the Concurrent Mode of operation. This will allow the user to
conduct a ratio test upon an individual tap
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.
WARNING
The MRCT produces high voltages and currents during the performance of tests. DO NOT
TOUCH connector clips or test leads while the MRCT is performing a test.
