GE D90 Plus Instruction Manual page 370
Line distance protection system
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Also See for D90 Plus:
- Instruction manual (694 pages) ,
- Communications manual (222 pages) ,
- Instruction manual (662 pages)
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PROTECTION FLEXLOGIC™
362
CONTACT IP 1 OFF .....................................Asserted when the field contact connected to contact input 1 is
CONTACT IP 1 TROUBLE OP...................Asserted when there is an internal or external problem with
CONTACT IP 1 TROUBLE DPO................Asserted when there are no problems with contact input 1.
CONTACT IP 2 to 40...................................The operands listed above are available for the contact inputs 2
Digital counter operands
COUNTER 1 EQL..........................................Asserted when the output of digital counter 1 is equal to the
COUNTER 1 HI .............................................Asserted when the output of digital counter 1 is greater than
COUNTER 1 LO ............................................Asserted when the output of digital counter 1 is less than the
COUNTER 2 to 8..........................................The operands listed above are also available for digital
Directional comparison unblocking scheme operands
DCUB OP ........................................................Asserted when the directional comparison unblocking scheme
DCUB TRIP A.................................................Asserted when the directional comparison unblocking scheme
DCUB TRIP B.................................................Asserted when the directional comparison unblocking scheme
DCUB TRIP C.................................................Asserted when the directional comparison unblocking scheme
DCUB TRIP 3P...............................................Asserted when the directional comparison unblocking scheme
DCUB TX1 ......................................................Asserted when the directional comparison unblocking scheme
DCUB TX2 ......................................................Asserted when the directional comparison unblocking scheme
DCUB TX3 ......................................................Asserted when the directional comparison unblocking scheme
DCUB TX4 ......................................................Asserted when the directional comparison unblocking scheme
Directional comparison blocking scheme operands
DIR BLOCK OP..............................................Asserted when the directional blocking scheme operates.
DIR BLOCK TRIP A.......................................Asserted when the directional blocking scheme operates to trip
DIR BLOCK TRIP B.......................................Asserted when the directional blocking scheme operates to trip
DIR BLOCK TRIP C.......................................Asserted when the directional blocking scheme operates to trip
DIR BLOCK TRIP 3P....................................Asserted when the directional blocking scheme operates to trip
DIR BLOCK TX INIT .....................................Asserted when the directional blocking signal is initiated
DIR BLOCK TX1 STOP................................Asserted when the directional blocking scheme de-asserts
DIR BLOCK TX2 STOP................................Asserted when the directional blocking scheme de-asserts
opened.
contact input 1.
through 40.
comparison value.
the comparison value.
comparison value.
counters 2 through 8.
operates.
operates to trip phase A.
operates to trip phase B.
operates to trip phase C.
operates to trip all three phases.
asserts transmit bit 1.
asserts transmit bit 2.
asserts transmit bit 3.
asserts transmit bit 4.
phase A.
phase B.
phase C.
all three phases.
transmit bit 1.
transmit bit 2.
PLUS
D90
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 7: PROTECTION
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