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4.6 GENERAL RELAY TESTS
c) DISPLAY TEST
The MMI test is built into the software. It allows the user to test the keypad, printer, and display. If no printer is
connected to the relay, skip the printer port testing.
1. Apply rated DC power and wait for initialization to complete as indicated by the green LED.
2. Press the [ACT] key. Scroll with the arrow keys until the ACT: MMI TEST heading is displayed.
3. Press the [ENT] key.
The display should read NEXT?.
4. Press [1/Y] followed by the [ENT] key.
The display will change to LED TST?.
5. Press [1/Y] followed by the [ENT] key.
If the green LED is on, it will change to red. If the red LED is on, it will change to green. The target LEDs
will flash on and off four times and then each target LED will be lit individually. When the test is over, the
target LEDs will return to their original state.
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6. Next, the display will prompt for the keyboard test with KEYBRD TST?.
7. Press [1/Y] followed by the [ENT] key.
8. At this point the MMI is in the keyboard test. Press every key on the keypad except for [CLR] key. As each
key is pressed, verify that the display indicates the correct key was pressed.
9. When all the keys have been checked, press the [CLR] key.
10. The display will prompt PRINTER TST?. if you do not have a printer or the printer port is not active, then
press the [3/N] followed by the [ENT] key. Otherwise, press [1/Y] followed by the [ENT] key.
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DGP Digital Generator Protection System
4 ACCEPTANCE TESTS
GE Power Management
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