Self-Tests - GE D90 Plus Instruction Manual

CHAPTER 14: TESTING

Self-tests

PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 459: Force contact outputs configuration settings
The following settings are available.
Test Mode Function
Range: Enabled, Disabled
Default: Disabled
This setting enables and disabled the test mode functionality.
Test Mode Initiate
Range: any FlexLogic™ operand
Default: ON
The test mode will initiate when the operand assigned to this setting is logic 1.
Cont Op 1, Cont Op 2, ..., Cont Op 12
Range: Normal, Energized, De-energized, Freeze
Default: Normal
These settings allow the D90
following ways.
– If set to "Normal", the contact output remains fully operational. It operates when
its control operand is logic 1 and resets when its control operand is logic 0.
– If set to "Energized", the output will close and remain closed for the entire
duration of the test mode, regardless of the status of the operand configured to
control the output contact.
– If set to "De-energized", the output will open and remain opened for the entire
duration of the test mode regardless of the status of the operand configured to
control the output contact.
– If set to "Freeze", the output retains its position from before entering the test
mode, regardless of the status of the operand configured to control the output
contact.
These setting names will reflect the programmed contact output names.
Plus
The D90 performs a number of self-test diagnostic checks to ensure device integrity.
When a self-test error occurs, an item will be displayed in the self-test summary on the
annunciator. All errors record an event in the event recorder.
Plus
contact outputs to respond to the test mode in the
SELF-TESTS
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