GE D90 Plus Instruction Manual page 46

Line distance protection system
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SPECIFICATIONS
36
POWER SWING DETECT
Functions:............................................................... power swing block, out-of-step trip
Characteristic:...................................................... mho or quadrilateral
Measured impedance: ..................................... positive-sequence
Blocking and tripping modes:....................... two-step or three-step
Tripping mode:.....................................................early or delayed
Current supervision pickup:........................... 0.050 to 30.000 pu in steps of 0.001
Current supervision dropout: ........................ <98% of pickup
Forward reach: .................................................... 0.10 to 500.00 ohms in steps of 0.01 (secondary ohms)
Reverse reach: .....................................................0.10 to 500.00 ohms in steps of 0.01 (secondary ohms)
Left and right blinders:..................................... 0.10 to 500.00 ohms in steps of 0.01 (secondary ohms)
Impedance accuracy:....................................... ±5%
Forward angles: .................................................. 40 to 90° in steps of 1
Reverse angles: ................................................... 40 to 90° in steps of 1
Angle accuracy:................................................... ±2°
Characteristic limit angles: ............................ 40 to 140° in steps of 1
Timers:..................................................................... 0.000 to 65.535 seconds in steps of 0.001
Timing accuracy: ................................................ ±3% or 4 ms (whichever is greater)
PROTECTION FLEXLOGIC™
Programming: ...................................................... Reverse Polish Notation with graphical visualization (keypad
Lines of code:........................................................ 512
Internal variables:............................................... 64
Supported operations: ..................................... NOT, XOR, OR (2 to 16 inputs), AND (2 to 16 inputs), NOR (2 to
Inputs: ...................................................................... any logical variable, contact, or virtual input
Number of timers: .............................................. 32
Pickup delay:......................................................... 0 to 60000 (ms, seconds, or minutes) in steps of 1
Dropout delay: .....................................................0 to 60000 (ms, seconds, or minutes) in steps of 1
PROTECTION VIRTUAL INPUTS
Input points: .......................................................... 64
Programmability: ................................................ self-reset or latched
PROTECTION VIRTUAL OUTPUTS
Output points: ...................................................... 96
Programmability: ................................................ output of a protection FlexLogic™ equation or input to a
REMOTE INPUTS (IEC 61850 GSSE/GOOSE)
Input points: .......................................................... 64
Remote devices:.................................................. 32
Default states on loss of
communications:........................................... on, off, latest/off, latest/on
Remote double-points status inputs:........ 16
REMOTE OUTPUTS (IEC 61850 GSSE/GOOSE)
Standard output points: .................................. 32
User output points: ............................................ 32
TRIP OUTPUT
Functionality: ........................................................ collects trip and reclose input requests and issues outputs to
Communications timer delay: ...................... 0 to 65535 seconds in steps of 0.001
Evolving fault timer:........................................... 0.000 to 65.535 seconds in steps of 0.001
Timing accuracy: ................................................ ±3% or 4 ms (whichever is greater)
programmable)
16 inputs), NAND (2 to 16 inputs), latch (reset-dominant),
edge detectors, timers
protection FlexLogic™ equation
control tripping and reclosing
PLUS
D90
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION

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