GE LPS-D, Инструкция по эксплуатации

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LPS-D Line Protection System GE Power Management
4.1 OVERVIEW 4 ACCEPTANCE/PERIODIC TESTS
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4.1.7 SETTING CHANGES
Setting changes required for a particular test are listed before the test. A sample setting change is shown
below. Refer to Chapter 8: LOCAL USER INTERFACE for further details on making setting changes.
a) EXAMPLE SETTING CHANGE
This example illustrates changing the reach of the Zone 1 Ground Unit to 5.6 Ohms.
1. Apply rated DC and wait for relay initialization to complete, indicated by a solid green status LED on the
front of the relay.
2. Press the SET key:
Enter Password:
is displayed.
If this is the first time the Settings level functions are used, the password has the factory value “123.”. This
password must be changed before any setting functions can be accessed. See Chapter 8: LOCAL USER
INTERFACE for details on changing the password.
3. Enter the current settings level password. If it is not known, see Chapter 12: ASCII COMMUNICATIONS
for details on viewing passwords. When the correct password is entered, the settings menu is displayed.
4. Press the [1/Y] and [ENT] keys to select Protection settings.
5. Scroll with the arrow key until the cursor is on
1. Z1DISTANCE
then press the ENT key.
6. Scroll through the Z1DISTANCE menu until
Z1GRDREACH = #.#
appears on the display.
7. Press the [ENT] key and then press 5.6 on the keypad. The inputs appear on the display and the “=” sign
changes to a blinking colon (:) to indicate that a change has been made but not yet entered.
8. When the correct reach is entered, press the [ENT] key. The blinking colon (:) will change back to an “=”.
This indicates that the change is entered into the settings buffer, but not permanently changed in the relay.
9. To complete the setting change, press the [END] key followed by the [ENT] key. If these keys are not
pressed after setting changes, the settings are not stored in memory.
10. Restore the Z1GRDREACH setting to its original value before beginning the test. You will have to enter the
settings level password again.
4.1.8 ENTERING TEST MODE
Before a test can be performed, the LPS-D must be put in test mode and select the function to be tested. The
test mode is set as follows:
1. Apply rated DC and wait for relay initialization to complete (if this has not already been done), indicated by
the green status LED on the front of the relay.
2. Press the [ACT] key and
Enter Password:
is displayed.