GT Trips List (Generic)
March 24, 2017 | Author: Ovais Siddiqui | Category: N/A
Short Description
Download GT Trips List (Generic)...
Description
SIZE
B
DWG. NO.
SH.
401B3661
1
REV.
REVISIONS
REV
DESCRIPTION
IssuedBy
DATE
REVISE ON VISIO ONLY VISIO DRAWING : 401B3661SH1
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REV
13
12
11
10
9
8
7
6
5
4
3
2
1
SH
REV STATUS OF SHEETS
BOM ISSUED
C
THIRD ANGLE PROJECTION
COPYRIGHT 2008
DIMENSIONS ARE IN INCHES TOLERANCES ON 2 PL DECIMALS ± 3 PL DECIMALS ± ANGLES ± FRACTIONS ±
GENERAL ELECTRIC COMPANY
PROPRIETARY INFORMATION-THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF GENERAL ELECTRIC COMPANY AND MAY NOT BE USED OR DISCLOSED TO OTHERS, EXCEPT WITH THE WRITTEN PERMISSION OF GENERAL ELECTRIC COMPANY.
RAGHU GUDA. CHECKED DURGA NALLAMOTTU ENGRG DURGA NALLAMOTTU ISSUED KERRIE LOKENBERG
DATE 08-11-12
g
GENERAL ELECTRIC COMPANY
GE Energy Products
08-11-12 08-11-12
9FA – TRIP LIST
08-11-12
0476
FIRST MADE FOR: --------
APPLIED PRACTICES
SIZE
B SCALE
SIM TO: 0
DT-1N
SIGNATURES DRAWN
CAGE CODE
DWG NO
401B3661 SHEET
1 of 13
0
UNLESS OTHERWISE SPECIFIED
SIZE
PROTECTIVE FUNCTION TURBINE TRIPs VIBRATION
GT Vibration Sensor Fault
SIGNAL NAME
L39VT
TYPE
PROTECTIVE STATUS 2
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
39V1A,1B,2A,2B,4A,4B & 5A.
Initiate a trip to avoid machine damage
SH.
2
REV.
-
LOGIC DESCRIPTION
ACTION SETPOINT (Nominal Setpoints)
Trip when any detector measures vibration above trip level AND other detector in that pair is disabled or measures above alarm level for LK39TTD
See Control Spec: Trip Level LK39VTx = 1.0 inch/sec Alarm Level LK39VAx = 0.5 inch/sec LK39TTD= 0.5 sec
GT EXHAUST TEMPERATURE AND PRESSURE
Exhaust Overtemperature Trip
Exhaust Overtemperature Trip
Exhaust Thermocouples Open Trip
L63ETH
PROTECTIVE STATUS
Possible damage to exhaust system due to high pressure
L86TXT
PROTECTIVE STATUS
Overtemperature of hot gas path components
L86TXT
L86TFB
POST IGNITION TRIP
PROTECTIVE STATUS
Overtemperature of hot gas path components
Potential loss of temperature control and protection
See Control Spec and Device Summary: 63ET-1:INCREASING: 24.0+-0.5 INH2O 63ET-2:INCREASING: 24.0+-0.5 INH2O KAFPEPHH=24 INH2O See Control Spec: TTKOT1 = 1240F TTKOT2 = 40F
Exhaust Temperature TC's TT-XD-1 through 31
Trips when exhaust temperature exceeds TTKOT1,6,5 (TTRXB+TTKOT2)
See Control Spec: Over.temp trip isothermal settingTTKOT1 = 1240F Over.temp trip incremental setting.TTKOT2 = 40F diff Low range exhaust temp limit TTKOT5= 1215 F High range ex
Exhaust Temperature TC's TT-XD-1 through 31
Trip when exhaust temperature signal drops below TTKXM4 deg F while in operation.
See Control Spec: TTKXM4 = 250F Failed TC alarm constant
g
SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
DWG NO
0476
B 401B3661 SCALE
CONT ON
SHEET
2 of 13
DISTR TO
Exhaust Duct Pressure High Trip
Trip when 96EP-1 pressure transmitter exceeds limit AND at 63ET-1,63ET-2 least one of the two 96EP-1 exhaust pressure trip switches 63ET-1 or 63ET-2 is picked up. Trip when exhaust temperature exceeds Exhaust Temperature TTKOT1 limit or when it TC's exceeds exhaust temp TT-XD-1 through 31 reference by TTKOT2 deg F.
SIZE
PROTECTIVE FUNCTION Compressor Discharge Pressure Low
SIGNAL NAME
TYPE
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
SH.
3
REV.
-
LOGIC DESCRIPTION
ACTION SETPOINT (Nominal Setpoints) See Control Spec: CAKCPD = 35 psig
L3TFLT
PROTECTIVE STATUS
Potential loss of temperature control and protection
96CD-1, 1B, 1C
Trip when compressor discharge pressure drops below CAKCPD psig when Gen breaker is closed.
L30LTT
PROTECTIVE STATUS
Protect vibration monitor components
TT-IB-1,TT-IB-2,TT-IB3
Trip when Load Tunnel Inner Barrel Temp exceeds LTKTRIP deg F.
See Control Spec: LTKTRIP=500.0 degF
L63QTX
PROTECTIVE STATUS
Loss of bearing lubrication
96QT-1, 2, 3
2oo3 sensors reading low lube oil header pressure
15 psig
2oo3 sensors reading low trip oil header pressure
QHTPK = customer specified DECREASING: 20.0+-2.0 PSIG OR 1.4061+-0.1406 KG/Cm2G (INCREASING: 22.0+-2.0 PSIG OR 1.5468+-0.1406 KG/Cm2G) NORM=(1) NO-CEC;
EXHAUST FRAME AND #2 BEARING High Load Tunnel Temperature Trip LUBE OIL AND HYDRAULIC OIL PROTECTION LOW LUBE OIL PRESSURE TRIP
Trip Oil Pressure Low
L63HGL
PROTECTIVE STATUS
Loss of trip oil pressure to maintain stop/control valve position
63HG-1,2,3
COMBUSTION MONITOR AND GT FLAME DETECTION
L30SPT
PROTECTIVE STATUS
Possible partial combustor flameout
g
SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
DWG NO
0476
B 401B3661 SCALE
SHEET
3 of 13
DISTR TO
High Exhaust Temp Spread Trip
Trip occur (1) Spread See Control Spec: #1 > Allowable spread K30SPT= 2sec Allowable Spread limit Exhaust Temperature or (TTXSPL) = Calculated TC's Spread #1 (varies between TTKSPL7 TT-XD-1 through 31 >TTXSPL_Z1 and TTKSPL6 (30-125 AND Spread#2 is 0.8 degF) Compressor times greater rhan Steady state allowable Discharge TC's allowable spread when spread = function CT-DA-1, 2, 3 2nd and 3rd coldest (exhaust temperature, TC's are adjacent after compressor discharge K30SPT seconds temperature)
SIZE
PROTECTIVE FUNCTION Loss of Flame Trip
SIGNAL NAME
TYPE
DESIGN JUSTIFICATION
L28FDT
PROTECTIVE STATUS
Unburned fuel in hot gas path
B
DWG. NO.
401B3661
DETECTION METHOD
SH.
4
REV.
-
LOGIC DESCRIPTION
ACTION SETPOINT (Nominal Se tpoints)
28FD-1, 2, 3, 4
Trip when two of the four combustor flame detectors indicate loss of flame.
See Control Spec
TNH, 52CR-1
Trip when 1) Turbine Speed falls below highest attained speed by more than the allowable limit (LK60BOG1) for LK60BOG2 seconds, OR (2) Static starter fails to start after getting start up permissive After run and Torque command is given to startic
See Control Spec: LK60BOG1 = 5 % LK60BOG2 = 1 sec LK14SSBOG = 1 % LK60SSBOGTRIP = 45 sec, KSS_CON_FAIL = 10 sec K60SSBOGTRIP=45 SECONDS
STARTING MEANS
Starting Device Trip
L3SMT
PROTECTIVE STATUS
Starter Device Troubles
GT COMPRESSOR PROTECTION
Compressor bleed valve position fault
Compressor Operating Limit Protection Trip
L4IGVT
PROTECTIVE STATUS
Impending loss compressor operating margin
96TV-1, -2 90TV-1
L86CBT
PROTECTIVE STATUS
Impending loss compressor operating margin
33CB-1, 2, 3, 4
LCPRERR
PROTECTIVE STATUS
Compressor operation exceeds design limits
96CD-1, 1B, 1C
g
Trip when compressor pressure ratio, offset by CPKERRO, exceeds the compressor operating limit line by CPKERRMX for CPKERRTD sec. SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
See Control Spec: LK86GVT1 = 7.5 DGA LK86GVT2 = 5 sec LK4IGVTX = 38 DGA
See Control Spec: K20CBY = 11 sec
See Control Spec: CPKERRTD=3 sec CPKERRMX = -0.45 CPKERRO = 0.25
DWG NO
0476
B 401B3661 SCALE
SHEET
4 of 13
DISTR TO
IGV CONTROL TROUBLE TRIP
Trip when difference between IGV position feedback (CSGV) and IGV refrence angle (CSRGV) is greater than LK86GVT1 DGA for more than LK86GVT2 sec below L14HS (95% speed), or when IGV position feedback (CSGV) is less than LK4IGVTX DGA above L14HS (95% sp Trip when any bleed valve is not full open after a time delay of K20CBY sec while the gen circuit breaker is open or the turbine drops below L14HS (94% speed)
PROTECTIVE FUNCTION FUEL CONTROL Gas Aux Stop Position Fault PreIgnition Trip
Startup Fuel Flow High
SIGNAL NAME
L4VS4_PI
L2SFT
TYPE
PRE IGNITION
PROTECTIVE STATUS TRIP 2
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
5
REV.
-
LOGIC DESCRIPTION
ACTION SETPOINT (Nominal Setpoints)
33VS4-1, 2
Trip if the aux stop valve is commanded open and does not open or open fully before flame is detected.
NA
Gas: 96SR-1,2 Liquid: 77FD-1,2,3
Trip when SRV position feedback, fsgr, exceeds startup fuel stroke reference high setpoint, LK60FSGH, and the warmup is not complete and also leak test master should be enabled. If you are on Liquid fuel and if flow divider speed FQL1 is higher than constant LK60FFLH FOR K2SFTL time In liquid fuel , turbine trip is intiated whenever fuel flow is high after completion of warmup,accelerating stage and no liquid fuel recirculation
See Control Spec: LK60FSGH = 20%,LK60FFLH=14%
See Control Spec: K2F = 30 sec K6TT2= times
Prevent failed start caused by loss of gas flow
Prevent excessive fuel caused by valve control failure at ignition
SH.
Failure to Ignite on Gas
L94FIG L4FIGFLT
PRE IGNITION TRIP L4PRET
Prevent excessive fuel caused by ignition failure
28FD-1, 2, 3, 4
Trips when the firing timer, K2F, expires and when flame is not detected from 2 of 4 flame detectors after giving startcommand K6TT2 times and on total gas.
Successive Failure to Ignite on Gas
L86FIGFLT
PRE IGNITION
Prevent excessive fuel caused by ignition failure
28FD-1, 2, 3, 4
Successive Failures to K62TT2 = 2 unsuccessfull light off on gas fuel. start attempts
g
SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
DWG NO
0476
B 401B3661 SCALE
SHEET
5 of 13
DISTR TO
SIZE
PROTECTIVE FUNCTION
Gas Speed/Ratio Valve Error
Gas Control Valve Servos Check
Gas Control Valve Not Following Reference Trip
Gas Fuel Intervalve P2 Pressure High Before Ignition
Gas Fuel Intervalve P2 Pressure High During Ignition and Warm Up
SIGNAL NAME
L3GRVT
L3ACS
L86GCVxT
TYPE
PROTECTIVE STATUS
PRE IGNITION TRIP L4PRET
PROTECTIVE STATUS TRIP 3
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
Inability to control fuel
Inability to control fuel
REV.
-
ACTION SETPOINT (Nominal Setpoints)
96SR-1, 2
Trip when a gas speed ratio valve fault occurs: the error between position command and psoition feedback exceeds K3GRVTX %.
See Control Spec: K3GRVTX = 5%
96GC-x, 77FD
Trips (1) When GCV feedback is less than K3GCVFB after time delay of K3GFTD (2) When GCV is failed to open in comparison (greater)with LK3GCVxO when valve is not enabled after time delay of K3GVFTD (3) or if the servo current is lesser than K3GCVSC after time delay of K3GVFTD
See Control Spec: LK3GCVxFB = -5% LK3GCVxO = 5% LK3GCVxSC = 37.5% K3GVFTD=3 sec (where x = GCV number: 1, 2, 3, Q)
Trip when difference between GCV position and reference is greater than LK3GCVx for for 10 seconds.
TO See Control Spec: k836gv = % LK3GCV = 10 sec
L86FPG2IH
PRE IGNITION TRIP L4PRET
Potential high temperature ignition.
96FG-2A, 2B, 2C
L86FPG2H T
PROTECTIVE STATUS TRIP 2
Potentially High Temperature Ignition
96FG-1, 2A, 2B
g
6
LOGIC DESCRIPTION
96GC-n
Inability to control fuel
SH.
Trip when P2 pressure exceeds KFPG2IH for K86FPG2IH seconds before firing permissive is reached. Trip when P2 Pressure exceeds FPG2WUH (post ignition high pressure trip set point) for K86FPG2HT seconds between firing permissive and warmup complete. SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
See Control Spec: KFPG2IH = 6 psig K86FPG2IH = 5 sec
See Control Spec: K86FPG2HT = 5 sec
DWG NO
0476
B 401B3661 SCALE
SHEET
6 of 13
DISTR TO
SIZE
PROTECTIVE FUNCTION
SIGNAL NAME
TYPE
Gas Fuel Intervalve P2 Pressure Low PROTECTIVE L86FPG2LT During Ignition and STATUS TRIP 2 Warm Up
Excessive P2 Cavity Leak
Gas Purge for DLN 2+
L94GLTSU L94GLTSD
L4GPFT
PRE IGNITION
TRIP
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
Potentially High Temperature Ignition
96FG-2A, 2B, 2C
Prevent excessive fuel during ignition causing fuel to ignite
96FG-2A, 2B, 2C
Non Functioning Gas Fuel Purge System
33PG-xx,63PGxx,20PG-x
g
SH.
7
REV.
-
LOGIC DESCRIPTION
ACTION SETPOINT (Nominal Setpoints)
Trip when P2 pressure falls below FPG2WUL (post ignition P2 low pressure trip setpoint) for K86FPG2LT seconds between firing permissive and warmup completeon fuel gas operation
See Control Spec: K86FPG2LT = 15 sec
Trip when the leakage across the SRV is excessive and the P2 cavity pressure rises above K86GLTA psig in K86GLT1 seconds, or if the P2 pressure drops below K86GLTB psig in K86GLT3 sec during a bottle test both during startup and shutdown. Trip when any of the following conditions match: (1) when Aux gas purge trip OR (2) When Pilot premix mode or premix mode and K20PG3ONY sec. to G3 purge command off and purge G3 command close category 4 fault OR (3) Purge G1 Command Close Category Fault and TD G1 Purge command off in Prmix mode (4) TD G2 purge cmd off and purge command category fault SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
See Control Spec: K86GLTA = 100 psig K86GLT1 = 30 sec K86GLTB = 150 psig K86GLT3 = 30 sec
K20PG3ONY = 8 Sec.
DWG NO
0476
B 401B3661 SCALE
SHEET
7 of 13
DISTR TO
SIZE
SIZE
PROTECTIVE FUNCTION
Gas Purge Fault Preignition
SIGNAL NAME
L4GPF_PI
TYPE
PRE IGNITION TRIP
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
Non Functioning Gas Fuel Purge System
SH.
8
REV.
-
LOGIC DESCRIPTION
ACTION SETPOINT (Nominal Setpoints)
33PG-xx,63PGxx,20PG-x
Trip when either of following condition match (1) Purge G3 command open no faults and K20PG30NZ1 sec. TD G3 Purge commandm On Flame not Detected Minimum speed signal come (2)Purge G2 command open no faults and K20PG20NZ1 sec. TD G2 Purge commandm On Flame not Detected Minimum speed signal come (3) Purge G1 command open no faults and K20PG10NZ1 sec. TD G1 Purge commandm On Flame not Detected Minimum speed signal come
K20PG30NZ1 = 50 sec.K20PG20NZ1 = 50 sec.K20PG10NZ1 = 50 sec.
77NH-1, 2, 3
Trip when median selected speed is above Primary OS trip level
See Control Spec: TNKHOSTrip Level = 110%
SPEED PROTECTION L12H
PROTECTIVE STATUS
Overstress of rotating components
g
SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
DWG NO
0476
B 401B3661 SCALE
SHEET
8 of 13
DISTR TO
Turbine Primary Electrical Overspeed Trip
SIZE
PROTECTIVE FUNCTION Turbine Emergency Electrical Overspeed Trip
SIGNAL NAME L12H_P
Loss of Primary Control Speed L12HF Signal Loss of Emergency Control Speed L12H_FLT Signal
Speed Signal Deviation Fault
TYPE PROTECTIVE STATUS
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
Overstress of rotating components
77HT-1, 2, 3
PROTECTIVE Loss of speed control and STATUS TRIP 3 Primary OS protection
77NH-1, 2, 3
PROTECTIVE Loss of speed control and STATUS TRIP 2 Emergency OS protection
77HT-1, 2, 3
L12HFD_C L12HFD_P
PROTECTIVE STATUS
Potential loss of speed control and protection
77NH-1, 2, 3 77HT-1, 2, 3
Loss of Emergency L12H_ACC Speed Signals
PROTECTIVE STATUS
Potential loss of overspeed protection
77HT-1, 2, 3
SH.
9
REV.
-
LOGIC DESCRIPTION
ACTION SETPOINT (Nominal Setpoints)
Trip when median See Control Spec: selected speed is Emergency Trip Level = above Emergency OS 110% trip level Trip when primary See Control Spec: speed signal is low Speed signal < 5% while in operation Trip when emergency See Control Spec and speed signal is low GEH 6421 Chapter 7: while in operation Speed signal < 2.16RPM Trip when difference between Emergency See Control Spec: speed signal and Trip Level = 5% of rated Primary speed signal is speed greater than the trip level. Trip when 2oo3 Emergency speed NA signals indicate sudden deceleration.
TURBINE CONTROL PANEL L3SFLT
Protective Module L5CMPST_ Trip TRP
PROTECTIVE STATUS
Controller Fault
Loss of TMR Voting
TRIP
Core Trip
Various
g
Trip when 2 of 3 controllers are not voting. Trip when 2 of 3 controllers are Trip SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
NA NA DWG NO
0476
B 401B3661 SCALE
SHEET
9 of 13
DISTR TO
Control System Fault Trip
SIZE
PROTECTIVE FUNCTION CUSTOMER Customer Trip
Emergency Pushbutton Trip
SIGNAL NAME
TYPE
L4CT
PROTECTIVE STATUS
L5E, R5E
PROTECTIVE STATUS
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
SH.
10
REV.
-
LOGIC DESCRIPTION
ACTION SETPOINT (Nominal Setpoints) Trip when Customer Trip hardwired digital input drops out. NA
Customer Crosstrip
Customer Crosstrip
Contact inputs from Customer controller
Emergency Trip
Contact inputs from Customer and Local Panel
Trip when Remote or Local E-Stop pushbutton is depressed.
STEP TO MIN LOAD
Compressor Bleed L83CB_L_S Valves TEP
PROTECTIVE STATUS
Initiate a Step to Spinning Reserve to avoid machine damage
33CB-1, 2, 3, 4
2oo3 Compressor Bleed Valve Open Limit Switches indicate open when commanded closed AND IGVs have 2oo3 open limit switches op ened past the for each of 4 Bleed Valves minimum operating positionL33CSGV_CB. IGV is opened during operation
STEP TO FSNL
External52G Trip
L83RBO
PROTECTIVE STATUS
L52GX
PROTECTIVE STATUS
g
TNH, TNHA 77NH
Overspeed and Acceleration Detected
101.5 % speed, 3 %/sec acceleration
52GX
Load Rejection due to Generator Breaker opening
NA
SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
DWG NO
0476
B 401B3661 SCALE
SHEET
10 of 13
DISTR TO
Remote Breaker Open Detect
Initiate a Step to Full Speed No Load to avoid machine damage due to overspeed Initiate a Step to Full Speed No Load to avoid machine damage due to overspeed
SIZE
PROTECTIVE FUNCTION DCS Breaker Open Command
SIGNAL NAME
TYPE
lca4_fsnl
PROTECTIVE STATUS
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
STEP TO FSNL
SH.
11
REV.
-
LOGIC DESCRIPTION
ACTION SETPOINT (Nominal Se tpoints)
HRSG temperatures
Load Rejection due to DCS detecting highhigh HRSG temperatures
Customer
Open Breaker when Maximum of dwatt1 and dwatt2 is less then LK32DWRP When DWATT is lesser than DWTLLIM and Gen Watt transducer is sensing fault after time delay of V32DWTDC Gen Bkr opens on reverse power
Generator Power < LK32DWRP (-4.8MW)
Reverse Power Detected
L32DW
STEP TO FSNL
Open Breaker to Avoid Generator Motoring
Maximum of MW sensors
Manual Breaker open
L52GT_TRI P
STEP TO FSNL
Operator initiated manual breaker trip
Operator Action
Emegency Lube Oil Pump Undervoltage Relay
L27QEL
PRE IGNITION TRIP L4PRET
Loss of Bearing Lubrication
27QE-1
Open Breaker when operator Issue Manual breaker open Trips before ignition if DC emergencey lube oil pump is determined to be in under voltage condition
Operator Initiated
NA
SEAL OIL
Haz gas Level High High start inhibit
L27ESL
l45LEL_PR ET
PRE IGNITION TRIP L4PRET
PROTECTIVE STATUS
Loss of Seal Lubrication
27ES-1
To prevent dangerous atm
g
45HA,HT,HG
Trips before ignition if DC emergencey seal oil pump is determined to be in under voltage condition Trip Signal is generated by logic L45LEL_PRET. This protection generates TRIP command in either og the following operating condition (1) If Turbine compartment Haz Gas Level Hi (2) If Gas Compt Has gas Level Hi (3) If Turbine compt Local Haz Gas Level Hi (4) If either of this Haz Gas monotor Rack #1, Rack # 2, Rack#3 (5) If Haz Gas syatem analog signal trbl SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
NA
CAGE CODE
NA
DWG NO
0476
B 401B3661 SCALE
SHEET
11 of 13
DISTR TO
Emegency Seal Oil Pump Undervoltage Relay
PROTECTIVE FUNCTION Fire ignition trip
SIGNAL NAME
TYPE
L45FTX
PROTECTIVE STATUS TRIP 1
DESIGN JUSTIFICATION
L86GT
PROTECTIVE STATUS TRIP 1
To avoid generator damage
Emergecny stop
L5ESTOP1 _FBZ
PROTECTIVE STATUS TRIP 1
To trip the machine giving manual command
Turbine compartment loss of ventillation trip
L4BTFLT
PROTECTIVE STATUS TRIP 2
Over heating of turbine compartment
Scrubber dp/Level very high trip
L4PSTX4_A
PROTECTIVE STATUS TRIP 4
To prevent uncleaned/moistured fuel entering into the machine
Coalescing filter level high trip
L4PSTX4_B
PROTECTIVE STATUS TRIP 4
To prevent uncleaned/moistured fuel entering into the machine
Load compartment loss of ventillation trip
L63AG_TR P
PROTECTIVE STATUS TRIP 4
DWG. NO.
401B3661
12
REV.
-
LOGIC DESCRIPTION
94F1-B
Trip signal generates If either fire found in Turbine/Acc compt or other any of 4 zones
Electrical inputs L86 signals
Gen trip lock out [l86g1a],Breaker failure lock out [l86bft], Gen& GSU Transformer lock out trip[l86v] ,GSU Transformer lock out trip [l86t] Unit trip Via 86G1B[l86g_1b],
[5E-1/PB] [R5E/PB]
Trip command will triggered if Emergency push button pressed
63AT-1.2.3,4
Turbine trips after time delay of BY K4BTFLT When low ventillation pressure still both oh of the ventillation fans running
71GS-1 ,2A,2B
71GCF1A,1B,2A,2B,3A,3B
Prevent overheating in Load gear compartment
63AG-1,2
g
SH.
DETECTION METHOD
Emergency due to fire
Generator protective trip
B
Trip signal will generate 1)If load compt vent pressure comes low sensed by both Control spec Pressure pr.switches after a switch setting time delay of 30 sec GEAR/LOAD COMPT AIR K63AG_TRP2 still two PRESSURE SWITCH fans are running DECREASING: 0.4 2)Load compt vent fan INH2O OR 10.1600 control signal is mmH2O enabled , still pressure NORM=NO-CEC; from sensed by 63AG 1,2 is GR1072 low after time delay of 7 min K63AG_TRP2 trip signal will be generated
GENERAL ELECTRIC COMPANY 08-11-12
ISSUED
08-11-12
See control specification K4BTFLT = 60sEC
Trips when level gets high when compared with predetermined level Trips when level gets high when compared with predetermined level
SIZE
DRAWN
ACTION SET POINT (Nomina l Set points)
CAGE CODE
DWG NO
0476
B 401B3661 SCALE
SHEET
12 of 13
DISTR TO
SIZE
PROTECTIVE FUNCTION
SIGNAL NAME
TYPE
DESIGN JUSTIFICATION
B
DWG. NO.
401B3661
DETECTION METHOD
Failure to Ignite on Oil
L94FIL
Pre Ignition trip L4PRET
Prevent excessive fuel caused by ignition failure
28FD-1, 2, 3, 4, 77FD 77NH,77HT
Fail to tranfer to initiate liquid fuel
L3FFL_FLT
Pre Ignition trip L4PRET
Unable to tranfeer to liquid fuel
77FD
g
SH.
13
REV.
-
LOGIC DESCRIPTION Trips when (1)IF After the firing timer delay of L2F ,no flame is detected in total liquid fuel mode (2) Any protective trip command triggers when Startup firing fuel command is enabled or under operation (3) If total mass flow of liquid fule is gr Trips When fuel feedback exceeds limit while L20FLXX _X timer is denergized ,when there is no recirculation and total liquid fuel
SIZE
GENERAL ELECTRIC COMPANY
DRAWN
08-11-12
ISSUED
08-11-12
CAGE CODE
ACTION SET POINT (Nominal Set points)
L2F = 30 Seconds K3RSLF1=120Sec
K33FFL_FLT=15 Sec
DWG NO
0476
B 401B3661 SCALE
SHEET
13 of 13
DISTR TO
SIZE
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