NDB Technologies CTT Series User Manual page 24

6. For each tap to be tested, adjust the ratio either by rotation the knob, or by
typing in the ratio value. Do not leave a ratio value in an unused field. This
could result in improper voltage distribution across ratio tests. Type "1" in
each unused ratio field to disable.
7. Select tests to be performed for each individual tap. While the ratio, saturation
and winding tests can be performed on every tap, the insulation test is
performed between X1 and ground. Taps with no test selected will be left
untested.
8. Select and press the save button to save the test plan to memory.
8.2.3.2 CTTx2 test setup
1. Press the Menu key.
2. Select Mode - Automatic.
3. Go to F1-Test tab.
4. Adjust the maximum test voltage range according to the specification of the
CT under test. Refer to section 11 for more information on how to set the max
voltage.
5. Set secondary current, typically 1 or 5 Amps.
6. Set the ratio.
7. Select the tests to perform.
C T T S e r i e s
7
CTTx2
3
- U s e r M a n u a l
6
24
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