Test Trip; Configuration - ABB RELION REB500 Operation Manual

Section 5
Local HMI
The protection system and all signals can be reset by choosing Clear/Reset all latched LEDs and Lists
on the LHMI, or equivalently by setting the signal 31810_External reset, for example, generated by
pressing the RESET button.
5.6

Test Trip

The REB500 system provides a test facility to activate and deactivate a test trip per bay. For this purpose
the signal 21120_EXT_TEST_TRIP can be set and reset via bay. For this purpose the signal
21120_EXT_TEST_TRIP can be set and reset via the LHMI Test Trip menu.
The LHMI Test Trip can be combined with a current criteria, so that the test trip is only issued if the
current of one phase does not exceed a certain factor of the rated current.
5.6.1

Configuration

The configuration of the LHMI Test Trip function includes the following two steps:
1. Configuration of the tripping output signal:
Add (configure) the tripping signal 21120_EXT_TEST_TRIP HMI500 menu Configuration /Binary
module /Outputs to the bay specific binary output configuration see Tripping Command
4.6.3.6.
2. Select the Enable the Test Trip check box from HMI menu Settings /Circuit breakers /Details
window.
86
If the signal 11115_Ext_Test_TRIP and LHMI Test Trip function are configured and used
simultaneously, the signal 21120_EXT_TEST_TRIP results from an OR function of both
possible inputs.
To enter LHMI Test Trip menu a user authentication is mandatory in case that user
account management is enabled. For details about the user account management see
Cyber security guideline.
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1MRK 500 132-UUS Rev. B
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Section
Distributed busbar protection REB500
Operation manual