40
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
Digital fault recorder specifications
DISTURBANCE RECORDER
Storage capacity:................................................one record with all available channels at 60 samples per
second for 40 seconds
Maximum records: .............................................64
Sampling rate:......................................................1 sample per cycle
Sampling accuracy:...........................................<1 ms per second of recording
Analog channels: ................................................64
Analog channel data: .......................................any FlexAnalog™ quantity
Digital channels:..................................................32
Digital channel data:.........................................any contact input, direct input, remote input, virtual input,
automation logic operand, or FlexLogic™ operand
Triggers: ..................................................................any digital change of state (user-programmable),
undervoltage, overvoltage, undercurrent, overcurrent,
underfrequency, overfrequency, rate of change of
frequency, 1 user-programmable trigger, 1 block
Storage modes: ...................................................automatic overwrite, protected
Triggering modes: ..............................................time window from rising edge of trigger, continuous
recording as long as trigger is active
Pre-trigger window:...........................................0 to 100%
Data storage:........................................................non-volatile memory
EVENT RECORDER
Storage capacity:................................................8192 events
Time tag:.................................................................to 1 ms
Triggers: ..................................................................any contact input, direct input, remote input, virtual input,
logic operand, or self-test event
Data storage:........................................................non-volatile memory
FAULT REPORT
Records: ..................................................................15
Data: .........................................................................station and circuit ID, date and time of trip, fault type, active
setting group at time of trigger, pre-fault current and voltage
phasors (2 cycles before 50DD associated with fault report
source), fault current and voltage phasors (1 cycle after
trigger), protection elements operated at time of trigger,
firmware revision
Triggers: ..................................................................user-selected operand
Data storage:........................................................non-volatile memory
FAULT LOCATOR
Method: ...................................................................single-ended
Accuracy:................................................................2% of line length
Units:.........................................................................miles or kilometers
Trigger:.....................................................................from fault report
Data storage:........................................................non-volatile memory
