GE L90 Instruction Manual page 422

FLEXLOGIC
Operand type
ELEMENT:
Power swing detect
ELEMENT:
PUTT
(Permissive
underreach transfer
trip)
ELEMENT:
Restricted ground
fault
ELEMENT:
Selector switch
5
ELEMENT:
Setting group
ELEMENT:
Disturbance detector
ELEMENT:
VTFF (Voltage
transformer fuse
failure)
ELEMENT:
Stub bus
5-198
Operand syntax
POWER SWING OUTER
POWER SWING MIDDLE
POWER SWING INNER
POWER SWING BLOCK
POWER SWING TMR2 PKP
POWER SWING TMR3 PKP
POWER SWING TMR4 PKP
POWER SWING TRIP
POWER SWING 50DD
POWER SWING INCOMING
POWER SWING OUTGOING
POWER SWING UN/BLOCK
PUTT OP
PUTT TX1
PUTT TX2
PUTT TX3
PUTT TX4
PUTT TRIP A
PUTT TRIP B
PUTT TRIP C
PUTT TRIP 3P
RESTD GND FT1 PKP
RESTD GND FT1 OP
RESTD GND FT1 DPO
RESTD GND FT2 to 4
SELECTOR 1 POS Y
SELECTOR 1 BIT 0
SELECTOR 1 BIT 1
SELECTOR 1 BIT 2
SELECTOR 1 STP ALARM
SELECTOR 1 BIT ALARM
SELECTOR 1 ALARM
SELECTOR 1 PWR ALARM
SELECTOR 2
SETTING GROUP ACT 1
SETTING GROUP ACT 2
SETTING GROUP ACT 3
SETTING GROUP ACT 4
SETTING GROUP ACT 5
SETTING GROUP ACT 6
SRC1 50DD OP
SRC2 50DD OP
SRC3 50DD OP
SRC4 50DD OP
SRC1 VT FF OP
SRC1 VT FF DPO
SRC1 VT FF VOL LOSS
SRC1 VT FF ALARM
SRC1 VT NEU WIRE OPEN
SRC2 VT FUSE FAIL to SRC4
STUB BUS OP
Operand description
Positive-sequence impedance in outer characteristic
Positive-sequence impedance in middle characteristic
Positive-sequence impedance in inner characteristic
Power swing blocking element operated
Power swing timer 2 picked up
Power swing timer 3 picked up
Power swing timer 4 picked up
Out-of-step tripping operated
The power swing element detected a disturbance other than power swing
An unstable power swing has been detected (incoming locus)
An unstable power swing has been detected (outgoing locus)
Asserted when power swing is detected and de-asserted when a fault during
power swing occurs
Permissive under-reaching transfer trip has operated
Permissive under-reaching transfer trip asserts transmit bit number 1
Permissive under-reaching transfer trip asserts transmit bit number 2
Permissive under-reaching transfer trip asserts transmit bit number 3
Permissive under-reaching transfer trip asserts transmit bit number 4
Permissive under-reaching transfer trip has operated to trip phase A
Permissive under-reaching transfer trip has operated to trip phase B
Permissive under-reaching transfer trip has operated to trip phase C
Permissive under-reaching transfer trip has operated to trip all three phases
Restricted ground fault 1 has picked up
Restricted ground fault 1 has operated
Restricted ground fault 1 has dropped out
Same set of operands as shown for RESTD GND FT1
Selector switch 1 is in Position Y (mutually exclusive operands)
First bit of the 3-bit word encoding position of selector 1
Second bit of the 3-bit word encoding position of selector 1
Third bit of the 3-bit word encoding position of selector 1
Position of selector 1 has been pre-selected with the stepping up control
input but not acknowledged
Position of selector 1 has been pre-selected with the 3-bit control input but
not acknowledged
Position of selector 1 has been pre-selected but not acknowledged
Position of selector switch 1 is undetermined or restored from memory when
the relay powers up and synchronizes to the three-bit input
Same set of operands as shown for SELECTOR 1
Setting group 1 is active
Setting group 2 is active
Setting group 3 is active
Setting group 4 is active
Setting group 5 is active
Setting group 6 is active
Source 1 disturbance detector has operated
Source 2 disturbance detector has operated
Source 3 disturbance detector has operated
Source 4 disturbance detector has operated
Source 1 VT fuse failure detector has operated
Source 1 VT fuse failure detector has dropped out
Source 1 has lost voltage signals (V2 below 10% and V1 below 5% of nominal)
Source 1 has triggered a VT fuse failure alarm
Source 1 VT neutral wire open detected. When the VT is connected in Delta,
do not enable this function because there is no neutral wire for Delta
connected VT.
Same set of operands as shown for SRC1 VT FF
Stub bus is operated
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS