Custom Test Point
It is recommended that you follow these guidelines while defining the custom test points:
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Decimal values for the injection current are considered as invalid inputs.
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The value entered for the protection trip type must match to the protection setting being tested. For example:
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In Short Time section, if you enter the value of injection current within the short-time current range, the MicroLogic trip unit will trip in short-time segment. This will indicate a Passed test status.
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In Long Time section, if you enter the value of injection current within the long-time current range, the MicroLogic trip unit will trip in long-time segment. The test result may display the incorrect cause of the trip as short-time. During the test, as the circuit breaker has tripped within the expected trip time, the test result will indicate a Passed test status.
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The following table shows the protection functions available on the non-communicating trip units:
Non-communicating trip unit |
Protection function |
---|---|
MicroLogic 2.0, ET 2.I |
|
MicroLogic 3.0, ET 5S |
|
MicroLogic 5.0 |
|