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8.1 INTRODUCTION
The available tests and their corresponding numbers are listed below.
1: End Test Mode
2: T1
3: T2
4: T3
5: T4
6: T5
7: T6
This category checks the relay logic and outputs by replaying oscillography data. The oscillography data can
be the embedded factory test case, uploaded oscillography data, or oscillography data stored in the relay.
After this command is selected, the following message appears (if protection is currently disabled):
The cursor is positioned at the beginning of the third line. If the user responds NO, CANCELED is displayed
and the test is canceled. If the user presses any keys other than [1/Y] or [3/N] and presses the [ENT] key, an
error message is displayed. It can be cleared and a valid input can be entered using the [CLR] key.
If the user responds YES, protection is enabled and the relay asks whether to disable the outputs, if they are
currently enabled. The user presses [1/Y] or [3/N] followed by [ENT] key. These keys are echoed on the display
as YES or NO respectively. If [1/Y] is pressed, the outputs are disabled and then the playback mode is contin-
ued. The outputs can be enabled after the playback is complete. If [3/N] is pressed, the outputs remain
enabled. Any control actions issued by the relay take place in this case.
If the outputs are disabled, the status LED turns RED since the relay is currently not protecting the line. If they
remain enabled during playback, the status LED turns RED only for the duration of the playback. In that case,
after the playback is complete, the status LED turns GREEN again.
The cursor will be located on the second line. The option Factory test case is chosen by moving the cursor to
that line and pressing the [ENT] key.
8
The user is prompted to select the settings which used during playback. If [1/Y] is pressed followed by [ENT]
key, the relay settings currently in effect will be used during playback. If [2] is pressed followed by [ENT], the
settings stored with the oscillography data will be used.
The factory test case is a phase to phase fault at 50% of the line determined by the default factory settings,
except for the configurable outputs which are all assigned a value of 0 (no assignment). The contact converters
will respond to the levels in the uploaded file. After the response described above, playback is started and the
word ON will be displayed on the top line. The cursor will be positioned on the top line. After the playback is
over, the word ON is removed.
8-
16
8: A1
15: A8
9: A2
16: A9
10: A3
17: A10
11: A4
18: A11
12: A5
19: A12
13: A6
20: C1A/C1B
14: A7
21: C2A/C2B
PLAYBACK
Enable Protection?
LPS-D Line Protection System
8 LOCAL USER INTERFACE
22: KT1
23: KT2
24: KT3
25: KT4
26: CA-A/B (Critical Alarm)
8.1.20 PLAYBACK
GE Power Management
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