GE D90 Plus - Front Panel Interface

CHAPTER 2: PRODUCT DESCRIPTION SPECIFICATIONS
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 33
TRANSIENT RECORDER
Storage capacity:................................................one record with all available channels at 32 samples per
cycle for 1 minute
Number of records:............................................1 to 64
Sampling rate:......................................................16 to 256 samples per power cycle
Timestamp accuracy:.......................................<10 μs per second of recording
Analog channels: ................................................up to twelve 16-bit, unprocessed, AC input channels
Analog channel data:........................................any FlexAnalog quantity
Digital channels:..................................................up to 128
Digital channel data:.........................................any contact input, direct input, remote input, virtual input,
automation logic operand, or FlexLogic™ operand
Sampled channels:.............................................up to 24
Sampled channel data:....................................16-bit, unprocessed sampled channels
Triggers:...................................................................any digital channel change of state, undervoltage,
overvoltage, undercurrent, overcurrent, underfrequency,
overfrequency, rate of change of frequency, one user-
programmable, one 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
Front panel interface
ANNUNCIATOR
Inputs:.......................................................................288
Windows per page:............................................12 to 48
Pages:.......................................................................up to 24
Sequence:...............................................................manual reset, locking
Off indication: .......................................................alarm inactive and reset
Flashing indication:............................................alarm active and not acknowledged, alarm inactive and not
acknowledged
On indication:........................................................alarm active and acknowledged, alarm inactive and not
reset
Priority:.....................................................................by active window and page number
Data storage:........................................................non-volatile memory
CONTROL DISPLAY
Devices: ...................................................................status and control of up to 8 power system devices
Pushbuttons:.........................................................30 dedicated user-programmable pushbuttons
Functionality: ........................................................supports select-before-operate functionality
DIGITAL FAULT RECORDER DISPLAY
Sequence of events: ..........................................displays the stored sequence of events record
Fault reports:.........................................................display and retrieval of the critical metrics of a stored fault
report
Transient records:...............................................retrieval of a stored transient record
Disturbance records:.........................................retrieval of a stored disturbance record
EQUIPMENT MANAGER DISPLAY
Battery monitoring:............................................displays the current battery voltage and alarm states