GE 845 Instruction Manual page 426

Transformer protection relay
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FLEXLOGIC
ELEMENT
OPERANDS
Ground TOC
GND TOC 1 PKP
GND TOC 1 OP
Ground TOC 2, Ground TOC 3
Ground IOC
GND IOC 1 PKP
GND IOC 1 OP
Ground IOC 2, Ground IOC 6
Ground Directional OC
Gnd Dir OC FWD
Gnd Dir OC REV
Harmonic Derating
W1 Harm Derat PKP
W1 Harm Derat OP
W2 Harm Derat PKP
W2 Harm Derat OP
W3 Harm Derat PKP
W3 Harm Derat OP
Load Limit Reduced
Hottest Spot
Hottest-Spot PKP
Hottest-Spot OP
Neutral TOC
Ntrl TOC 1 PKP
Ntrl TOC 1 OP
Neutral TOC 2
Neutral TOC 2, Neutral TOC 3
Neutral IOC
Ntrl IOC 1 PKP
Ntrl IOC 1 OP
Ntrl IOC 2
Neutral IOC 2 to Neutral IOC6
Neutral Directional OC
Ntrl Dir OC FWD
Ntrl Dir OC REV
Neutral OV
Ntrl OV 1 PKP
Ntrl OV 1 OP
Negative sequence OV
NegSeq OV 1 PKP
NegSeq OV 1 OP
Negative Sequence TOC NegSeq TOC 1 PKP
NegSeq TOC 1 OP
Neg Seq TOC 2, Neg Seq TOC 3
Negative Sequence IOC NegSeq IOC 1 PKP
NegSeq IOC 1 OP
Neg Seq IOC 2, Neg Seq IOC 3
Negative Sequence
NegSeq DirOC FWD
Directional OC
NegSeq DirOC REV
Non-Volatile Latch 1 to
NV Latch 1 ON
16
NV Latch 1 OFF
Any PKP
Any OP
Any Trip
Any Alarm
NV Latch 2 to 16
Over-Frequency
Overfreq 1 PKP
Overfreq 1 OP
Overfreq 2
Overload
W1 Overload PKP
W2 Overload PKP
W3 Overload PKP
Overload PKP
Overload OP
4–322
EVENT DESCRIPTION
Ground time overcurrent 1 has picked up
Ground time overcurrent 1 has operated
Same set of operands as shown for Ground TOC 1
Ground instantaneous overcurrent 1 has picked up
Ground instantaneous overcurrent 1 has operated
Same set of operands as shown for Ground IOC 1
Ground directional overcurrent forward has operated
Ground directional overcurrent reverse has operated
Harmonic Derating W1 has picked up
Harmonic Derating W1 has operated
Harmonic Derating W2 has picked up
Harmonic Derating W2 has operated
Harmonic Derating W3 has picked up
Harmonic Derating W3 has operated
Harmonic Derating has detected load limit reduced
The Hottest-spot temperature element has picked up
The Hottest-spot temperature element has operated
Neutral time overcurrent 1 has picked up
Neutral time overcurrent 1 has operated
The same set of operands as per Neutral TOC 1
Neutral IOC 1 has picked up
Neutral IOC 1 has operated
The same set of operands as per Neutral IOC 1
Neutral directional overcurrent forward has operated
Neutral directional overcurrent reverse has operated
Neutral overvoltage element 1 has picked up
Neutral overvoltage element 1 has operated
Negative-sequence overvoltage element 1 has picked up
Negative-sequence overvoltage element 1 has operated
Negative Sequence TOC 1 has picked up
Negative Sequence TOC 1 has operated
Same set of operands as shown for Negative Sequence TOC 1
Negative Sequence IOC has picked up
Negative Sequence IOC 1 has operated
Same set of operands as shown for Negative Sequence IOC 1
Negative Sequence directional overcurrent forward has operated
Negative Sequence directional overcurrent reverse has operated
The output of non-volatile latch 1 is On
The output of non-volatile latch 1 is Off
Any enabled protection or control element pickup
Any enabled protection or control element operated
Any operated element with Function selected as "Trip"
Any operated element with Function selected as "Alarm"
The same set of operands as per Non-Volatile Latch 1
Overfrequency 1 has picked up
Overfrequency 1 has operated
The same set of operands as per Overfreq 1
Winding 1 Transformer overload has picked up
Winding 2 Transformer overload has picked up
Winding 3 Transformer overload has picked up
At least one Winding Transformer overload has picked up
Transformer overload has operated
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: SETPOINTS

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