70
3.
Connect the test set secondary output
SOURCE
binding posts
X1S
to the secondary of the current
transformer X1, and
X5S
to the
secondary of the current transformer on
the most external tap.
4.
Connect the test set secondary output binding posts X1 X2, X3, X4 and X
N
to secondary of the
current transformer X1, X2, X3, X4 and X5 (if less than 5 taps are available on the CT, then connect
the test set secondary output binding posts X1, X2… to the correlating secondary of the current
transformer with the EXCEPTION of connecting the test set secondary output binding X
n
to the
most external secondary of the current transformer. For Example on a 3 Tap CT Connect X1(test set)
to X1(CT), X2( test set ) to X2 ( CT ), and Xn (test set ) to X3 ( CT)
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, select the “Nameplate Information” menu by selecting
Name Plate navigation button.
8.
Fill in nameplate information about the CT. At a minimum, the number of taps must be selected.
From the Home Screen select the “Ratio Test” button
.
10
In the Ratio test screen, selecting the Concurrent Mode of operation will allow the user to test
multiple taps in parallel.
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.
