GE D90 Plus Instruction Manual page 378

CONTROL ELEMENTS
368
Phase C Opened Status
Range: any FlexLogic operand or shared operand
Default: Off
The operand selected by this setting is used to derive the phase B breaker position
indication from a normally-closed (52b) status input. If unavailable, the closed status
input can be inverted to provide this signal. This input is not required if the indication
mode is single-pole.
Operate Time
Range: 0.000 to 2.000 seconds in steps of 0.001
Default: 0.070 seconds
This setting specifies a timer that is asserted when both the normally open and normally
closed breaker indications are reset. When the timer expires, a bad status is indicated
for the breaker. Program this timer setting equal to the normal operating time for the
breaker.
Discrepancy Time
Range: 0.000 to 2.000 seconds in steps of 0.001
Default: 0.070 seconds
This setting specifies a timer that is asserted when the three breaker poles are not all
opened or not all closed. Program this timer setting to greater than the longest expected
time for which the three breaker poles disagree.
Reset Counter
Range: any FlexLogic operand or shared operand
Default: Off
Assertion of the operand assigned to this setting resets the breaker operation counters.
Events
Range: Enabled, Disabled
Default: Enabled
This settings enables the recording of breaker configuration events in the sequence of
events record.
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 7: PROTECTION