DOCA0170EN-06

Custom Test Point

It is recommended that you follow these guidelines while defining the custom test points:

  • Decimal values for the injection current are considered as invalid inputs.

  • The value entered for the protection trip type must match to the protection setting being tested. For example:

    • 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.

    • 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.

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

  • Long-time protection

  • Short-time protection

MicroLogic 3.0,

ET 5S

  • Long-time protection

  • Instantaneous protection

MicroLogic 5.0

  • Long-time protection

  • Short-time protection

  • Instantaneous protection

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