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8 LOCAL USER INTERFACE
process of performing an action. If the test fails then an error message is displayed and the action is not per-
formed. If the test passes, the action is performed, OUTPUTS DISABLED is displayed, and the status LED on
the front of the relay will turn RED. If a key other than a [1/Y] or [3/N] is pressed, an error message is displayed
and the outputs are not disabled. If this category is selected when outputs are already disabled, the following
message is displayed and must be cleared with the [CLR] key.
This command is used to permit the relay to enable the digital outputs of the relay.
The relay will ask whether to enable the outputs. Press [3/N] for NO or [1/Y] for YES and then press the [ENT]
key. If NO is selected, CANCELED is displayed and no LPS-O action occurs. If YES is selected, two checks
are performed: for the CONTROL or MASTER privilege level and whether communication is in the process of
performing an action. If the test fails, an error message is displayed and the action is not performed. If the test
passes, the action is performed and OUTPUTS ENABLED is displayed. The status LED on the front of the
relay will turn GREEN if there are no status problems with the relay. If a key other than [1/Y] or [3/N] is pressed,
an error message is displayed and the outputs are not enabled.
If this category is selected when outputs are already enabled, the relay will display a message which must be
cleared with the [CLR] key.
This command manually trips a breaker. Each breaker controlled by the relay must be tripped individually. If the
relay is controlling two breakers when this category is selected, the relay will request which breaker to trip.
To indicate the breaker, press [1] or [2] followed by the [ENT] key (any other Data Entry key will cause an error
message to be displayed). If the relay is set to control one breaker, this query will be skipped.
The relay will then ask whether to trip the selected breaker. Select [3/N] (NO) or [1/Y] (YES) followed by the
[ENT] key. If NO is chosen, CANCELED appears on the display and no LPS-O action occurs. If YES is chosen,
two checks are performed: for the CONTROL or MASTER privilege level and whether communication is in the
process of performing an action. If the checks fail, then an error message is displayed and the action is not per-
formed. If the checks pass, then the action is performed and either BREAKER x TRIPPED or NOT TRIPPED
appears on the bottom line of display (depending on the status of the breaker). If a Data Entry key other than
[3/N] or [1/Y] is pressed, an error message is displayed and the breaker is not tripped.
The breakers are tripped as follows:
•
For one breaker and one trip circuit, output contact T1 is energized.
•
For one breaker and two trip circuits, output contact T1 and T2 are energized.
•
For two breakers with one trip circuit each, output contacts T1 and T2 are energized.
GE Power Management
DISABLE OUTPUTS
OUTPUTS CURRENTLY
DISABLED.
TRIP BREAKER
Trip Breaker 1/2?
LPS-O Line Protection System
8.1 INTRODUCTION
8.1.13 ENABLE OUTPUTS
8.1.14 TRIP BREAKER
8-
11
8
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