Megger MRCT - Page 79

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1. Verify the Power ON/OFF switch is OFF. Power the test set from a suitable source of power (95-
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 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 XN 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 Xn 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. Turn Power ON/OFF switch to ON.
6. After the boot up, select the “Nameplate Information” menu by selecting
Name Plate navigation button.
7. Fill in nameplate information about the CT. At a minimum, the number of taps must be
selected.
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.