GE D90 Plus Instruction Manual page 430
Line distance protection system
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Also See for D90 Plus:
- Instruction manual (688 pages) ,
- Communications manual (222 pages) ,
- Instruction manual (662 pages)
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PROTECTION FLEXLOGIC™
420
NEG SEQ DIR OC2 REV.............................Asserted when the negative-sequence directional overcurrent
Negative-sequence instantaneous overcurrent operands
NEG SEQ IOC1 DPO...................................Asserted when the negative-sequence instantaneous
NEG SEQ IOC1 OP ......................................Asserted when the negative-sequence instantaneous
NEG SEQ IOC1 PKP....................................Asserted when the negative-sequence instantaneous
NEG SEQ IOC2..............................................The operands listed above are also available for negative-
Negative-sequence overvoltage operands
NEG SEQ OV DPO.......................................Asserted when the negative-sequence overvoltage element
NEG SEQ OV OP ..........................................Asserted when the negative-sequence overvoltage element
NEG SEQ OV PKP ........................................Asserted when the negative-sequence overvoltage element
Negative-sequence time overcurrent operands
NEG SEQ TOC1 DPO..................................Asserted when the negative-sequence time overcurrent 1
NEG SEQ TOC1 OP .....................................Asserted when the negative-sequence time overcurrent 1
NEG SEQ TOC1 PKP...................................Asserted when the negative-sequence time overcurrent 1
NEG SEQ TOC2.............................................The operands listed above are also available for negative-
Neutral instantaneous overcurrent operands
NEUTRAL IOC1 DPO..................................Asserted when the neutral instantaneous overcurrent 1
NEUTRAL IOC1 OP .....................................Asserted when the neutral instantaneous overcurrent 1
NEUTRAL IOC1 PKP ...................................Asserted when the neutral instantaneous overcurrent 1
NEUTRAL IOC2 to 12.................................The operands listed above are also available for neutral
Neutral overvoltage operands
NEUTRAL OV1 DPO....................................Asserted when the neutral overvoltage 1 element drops out.
NEUTRAL OV1 OP.......................................Asserted when the neutral overvoltage 1 element operates.
NEUTRAL OV1 PKP.....................................Asserted when the neutral overvoltage 1 element picks up.
NEUTRAL OV2 to 3.....................................The operands listed above are also available for neutral
Neutral time overcurrent operands
NEUTRAL TOC1 DPO.................................Asserted when the neutral time overcurrent 1 element drops
NEUTRAL TOC1 OP ....................................Asserted when the neutral time overcurrent 1 element
NEUTRAL TOC1 PKP ..................................Asserted when the neutral time overcurrent 1 element picks up.
2 element reverse mode operates.
overcurrent 1 element drops out.
overcurrent 1 element operates.
overcurrent 1 element picks up.
sequence instantaneous overcurrent 2.
drops out.
operates.
has picks up.
element drops out.
element operates.
element picks up.
sequence time overcurrent 2.
element drops out.
element operates.
element picks up.
instantaneous overcurrent 2 through 12.
overvoltage 2 and 3.
out.
operates.
PLUS
D90
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 7: PROTECTION
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