GE T60 Instruction Manual page 424

Transformer protection system
Hide thumbs Also See for T60:
Table of Contents

Advertisement

FLEXLOGIC
Operand type
ELEMENT:
Power swing detect
ELEMENT:
Restricted ground
fault
ELEMENT:
Remote RTD
protection
ELEMENT:
5
RTD protection
ELEMENT:
Selector switch
ELEMENT:
Setting group
ELEMENT:
Disturbance detector
ELEMENT:
VTFF (Voltage
transformer fuse
failure)
5-206
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
RESTD GND FT1 PKP
RESTD GND FT1 OP
RESTD GND FT1 DPO
RESTD GND FT2 to 6
RRTD COMM FAIL
RRTD RTD 1 ALARM DPO
RRTD RTD 1 ALARM OP
RRTD RTD 1 ALARM PKP
RRTD RTD 1 OPEN
RRTD RTD 1 SHORTED
RRTD RTD 1 TRIP DPO
RRTD RTD 1 TRIP OP
RRTD RTD 1 TRIP PKP
RRTD RTD 2 to 12
RTD Ip 1 ALARM DPO
RTD Ip 1 ALARM OP
RTD Ip 1 ALARM PKP
RTD Ip 1 OPEN
RTD Ip 1 SHORTED
RTD Ip 1 TRIP DPO
RTD Ip 1 TRIP OP
RTD Ip 1 TRIP PKP
RTD Ip 2 to 48
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
SRC5 50DD OP
SRC6 50DD OP
SRC1 VT FF OP
SRC1 VT FF DPO
SRC1 VT FF VOL LOSS
SRC1 VT FF ALARM
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
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
Asserted when RRTD loss of communications is detected
Asserted when the RRTD RTD 1 alarm stage drops out
Asserted when the RRTD RTD 1 alarm stage operates
Asserted when the RRTD RTD 1 alarm stage picks up
Asserted when the RRTD RTD 1 detects an open circuit
Asserted when the RRTD RTD 1 detects an short/low circuit
Asserted when the RRTD RTD 1 trip stage drops out
Asserted when the RRTD RTD 1 trip stage operates
Asserted when the RRTD RTD 1 trip stage picks up
The set of operands shown are available for RRTD RTD 2 and higher
Asserted when the alarm stage of RTD input 1 protection picks up
Asserted when the alarm stage of RTD input 1 protection operates
Asserted when the alarm stage of RTD input 1 protection drops out
Asserted when RTD input 1 detects an open circuit
Asserted when RTD input 1 detects a shorted or low circuit
Asserted when the trip stage of RTD input 1 protection picks up
Asserted when the trip stage of RTD input 1 protection operates
Asserted when the trip stage of RTD input 1 protection drops out
The set of operands shown are available for the RTD Ip 2 and higher elements
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 5 disturbance detector has operated
Source 6 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
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS

Advertisement

Table of Contents
loading

Table of Contents