Digital Fault Recorder Specifications - GE D90 Plus Instruction Manual

SPECIFICATIONS

Digital fault recorder specifications

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DISTURBANCE RECORDER
Storage capacity:................................................ one record with all available channels at 60 samples per
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,
Triggers: .................................................................. any digital change of state (user-programmable),
Storage modes: ................................................... automatic overwrite, protected
Triggering modes: .............................................. time window from rising edge of trigger, continuous
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,
Data storage:........................................................ non-volatile memory
FAULT REPORT
Records: .................................................................. 15
Data: ......................................................................... station and circuit ID, date and time of trip, fault type, active
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
second for 40 seconds
automation logic operand, or FlexLogic™ operand
undervoltage, overvoltage, undercurrent, overcurrent,
underfrequency, overfrequency, rate of change of
frequency, 1 user-programmable trigger, 1 block
recording as long as trigger is active
logic operand, or self-test event
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
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION