GENERATOR PROTECTION RELAY SETTINGS

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Equipment List for Protn. for Generator Relay Panel

Func. Ref Description Specification Make Dis Type Total Qty.

10CHA00GH001 10CHA00GH002 10CHA00GH003 10CHA00GH004 10CHA00GH005

FRONT MOUNTED EQUIPMENTS

GR1 Generator Differential Protn (87G) CT Sec: 5A, PT Sec:110V AC (PH-PH) SIEMENS 3 7UM62 1 0 0 0 0 1

Gen. B/U Impedence Protn - Stage-1(21G1) Aux. Supply : 220V DC

Gen. B/U Impedence Protn - Stage-2(21G1) 15B/I, 20B/O + 1 LIVE STATUS CONTACT Gen. Under Frequency Stage -1(81UF) Case Size : 1/1 19", IEC61850 PROTOCOL Gen. Under Frequency Stage -2(81UF) Time Stage-1&2 MLFB : 7UM6225-6EB92-3CB0-LOS Gen. Over Frequency Protn. (81OF)

Reverse Power Relay(32G)+Turbine trip Relay Operated/ Turbine stop Volve Closed+Time Stage-1 Reverse Power Relay(32G) +Time Stage-2 Low Power Relay(37G)+Turbine trip Relay Operated/ Turbine stop Volve Closed+Timer

Gen. Under Voltage Protn. (27G) Gen. Over Voltage Stage-1 & 2 (59G) Gen. Over Fluxing Stage-1 (99G)

Gen. Over Fluxing Stage-2 (99G) With GCB Open & Closed Gen. Pole Slipping (78G)

Gen. Loss of Excitation (40G)

Gen. Loss of Excitation With Under Voltage (27/40G) Gen. Negetive Phase Sequence (46) Stage-1 Gen. Neg. Phase Sequence (46) Stage-2 Time Stage-1&2 Gen. Stator Over load (50GS)

Gen. Stator earth fault 95% (64G2) GCB Local Breaker Backup (50LBB) Dead machine Protection (61B)

Voltage Balance Protection (60G21, 60G22, 60G23) Gen. Open delta earth Fault Protection (59N)

60G11,60G12 Voltage Balance Relay Aux. Supply : 220V DC, 2NO+4CO, S/R AREVA 3 MVAPM32 3 3 0 0 0 6

60G13,60G21 PT Sec:110V AC (PH-PH) , Case Size: Midos Case - 4 60G22,60G23 Wiring diagram: F1MVAPM32001

Model: MVAPM32D1AA2001A

186A1,186A2-1 High speed G roup-1 Class A//C 3 phase trip Aux. Supply : 220V DC AREVA 3 MVAJ20 5 0 0 0 0 5 186A2-2, 186A2-3 relay (Hand/Electrical Reset) Case: Midos size:4

186C-1, Contacts: 14NO+6NC (Hand/Electrical Reset) Flag: Yes, Mounting: Flush

Model: MVAJ205LA1006A

286A1, 286A2-1 High speed G roup-2 Class A//C 3 phase trip Aux. Supply : 220V DC AREVA 3 MVAJ20 0 5 0 0 0 5 286A2-2, 286A2-3 relay (Hand/Electrical Reset) Case: Midos size:4

286C-1, Contacts: 14NO+6NC (Hand/Electrical Reset) Flag: Yes, Mounting: Flush

Model: MVAJ205LA1006A

Item No : Qty : 1

R4 QT CORRECTED 09.06.10 KRK

R3 REVISED AS PER COMMENTS DT. 22.12.09 23.12.09 KRK

Issue Remarks Date Name

ENGINEER : TCE CONSULTING ENGINEERS LIMITED

Date : 30.04.09

Description :- Equipment List

QTY / Panel

Dis: 1- W Stock, 2- W non stock, 3- W non stock others, 4- Project Supply, 5- Loose Supply

Sales Ref : 3001506934 Client : COASTAL GUJARAT POWER LIMITED

Project : 4000 MW ULTRA MEGA POWER PLANT AT MUNDRA, GUJARAT

PREP : MR CHKD : MS Circuit: GRP # UNIT10 APPD : MS SIEMENS SIEMENSSIEMENS SIEMENS Original/Replacement for/ (4)-G719EA-XG970-ER901-R4 Replaced by :-Page 1 of 8

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GR2 Generator Differential Protn (87G) CT Sec: 5A, PT Sec:110V AC (PH-PH) SIEMENS 3 7UM62 0 1 0 0 0 1

Gen. B/U Impedence Protn - Stage-1(21G1) Aux. Supply : 220V DC

Gen. B/U Impedence Protn - Stage-2(21G1) 15B/I, 20B/O + 1 LIVE STATUS CONTACT Gen. Under Frequency Stage -1(81UF) Case Size : 1/1 19", IEC61850 PROTOCOL Gen. Under Frequency Stage -2(81UF) Time Stage-1&2 MLFB : 7UM6225-6EB92-3CB0-LOS Gen. Over Frequency Protn. (81OF)

Reverse Power Relay(32G)+Turbine trip Relay Operated/ Turbine stop Volve Closed+Time Stage-1 Reverse Power Relay(32G) +Time Stage-2 Low Power Relay(37G)+Turbine trip Relay Operated/ Turbine stop Volve Closed+Timer

Gen. Under Voltage Protn. (27G) Gen. Over Voltage Stage-1 & 2 (59G) Gen. Over Fluxing Stage-1 (99G)

Gen. Over Fluxing Stage-2 (99G) With GCB Open & Closed Gen. Pole Slipping (78G)

Gen. Loss of Excitation (40G)

Gen. Loss of Excitation With Under Voltage (27/40G) Gen. Negetive Phase Sequence (46) Stage-1 Gen. Neg. Phase Sequence (46) Stage-2 Time Stage-1&2 Gen. Stator Over load (50GS)

Gen. Stator earth fault 95% (64G2) GCB Local Breaker Backup (50LBB) Dead machine Protection (61B)

Voltage Balance Protection (60G21, 60G22, 60G23) Gen. Open delta earth Fault Protection (59N)

95/186A1,95/186A2-1 Supervision relay for Trip Relay Supervision Relay AREVA 3 MVAXM21 7 0 0 2 1 10

95/186A2-2,95/186A2-3 High Speed Triping relay Aux. Supply: 220V DC, Contacts: 1NO+2NC S/R 95/186B,95/186C-1, Flag: Yes, Case:-Size 3 Midos: Mounting-Flush 95/186C-2,95/186DUT10A, Model no: MVAXM21C1CE3005A

95/186DUT10B, WDG: F1MVAXM21001

95/186DST1

95/286A1,95/286A2-1 Supervision relay for Trip Relay Supervision Relay AREVA 3 MVAXM21 0 7 0 2 1 10

95/286A2-2,95/286A2-3 High Speed Triping relay Aux. Supply: 220V DC, Contacts: 1NO+2NC S/R 95/286B, 95/286C-1, Flag: Yes, Case:-Size 3 Midos: Mounting-Flush 95/286C-2,95/286DUT10A, Model no: MVAXM21C1CE3005A

95/286DUT10B, WDG: F1MVAXM21001

95/286DST1

80A, 80B DC Supervision cum changeover Relay Aux. Volt:220V DC, 2N/O, 2C/O, Flag- NO, S/R AREVA 3 MVAAM11 1 1 0 0 2 Slug: 80+/-20ms on D/O Size:2 MIDOS,Flush

Model No:MVAAM11BIAG1030A WDG: Z1MVAAM11011

Item No : Qty : 1

Project : 4000 MW ULTRA MEGA POWER PLANT AT MUNDRA, GUJARAT ENGINEER : TCE CONSULTING ENGINEERS LIMITED

Date : 30.04.09

Description :- Equipment List PREP : MR CHKD : MS Circuit: GRP # UNIT10 APPD : MS SIEMENS SIEMENSSIEMENS SIEMENS Original/Replacement for/ (4)-G719EA-XG970-ER901-R4 Replaced by :-Page 2 of 8

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87GT/64GT/99GT, Numerical Generator Transformer Differential, CT Sec: 1A SIEMENS 3 7UT633 0 0 1 0 0 1

With inbuilt Over fluxing & High impedance REF Aux. Supply : 220V DC, 110V AC 21B/I, 24B/O + 1 LIVE STATUS CONTACT Case Size : 1 /1 x 19", IEC 61850 PROTOCOL, MLFB : 7UT6331-6EB92-1BB1-LOS

87/51UT-10A Numerical Unit Transformer for CT Sec: 1A SIEMENS 3 7UT633 0 0 0 2 0 2

87/51UT-10B Differential protection relay With Inbuilt O/C Relay Aux. Supply : 220V DC

21B/I, 24B/O + 1 LIVE STATUS CONTACT Case Size : 1 /1 x 19", IEC 61850 PROTOCOL, MLFB : 7UT6331-6EB92-1AA1-LOS

87/51ST1 Numerical station Transformer for CT Sec: 1A SIEMENS 3 7UT633 0 0 0 0 1 1

Differential protection relay With Inbuilt O/C Relay Aux. Supply : 220V DC

21B/I, 24B/O + 1 LIVE STATUS CONTACT Case Size : 1 /1 x 19", IEC 61850 PROTOCOL, FO DOUBLE, ST CONNECTOR

MLFB : 7UT6331-6EB92-1AA1-LOS

51NGT GT Backup earth fault protection Relay CT SEC:1A SIEMENS 3 7SJ80 0 0 1 0 0 1

Auxiliary voltage: 220V DC Size: 1/6 19"; Mounting: Flush 3 BI; 5 BO +1 LIVE STATUS CONTACT IEC 61850 PROTOCOL MLFB: 7SJ8011-5EB96-1FA0-LOS

50-UT10A Instantaneous over current CT SEC:1A SIEMENS 3 7SJ80 0 0 0 2 0 2

50-UT10B protection relay for unit transformers Auxiliary voltage: 220V DC Size: 1/6 19"; Mounting: Flush 3 BI; 5 BO +1 LIVE STATUS CONTACT IEC 61850 PROTOCOL MLFB: 7SJ8011-5EB96-1FA0-LOS

50-ST1 Instantaneous over current CT SEC:1A SIEMENS 3 7SJ80 0 0 0 0 1 1

protection relay for station transformer Auxiliary voltage: 220V DC Size: 1/6 19"; Mounting: Flush 3 BI; 5 BO +1 LIVE STATUS CONTACT IEC 61850 PROTOCOL MLFB: 7SJ8011-5EB96-1FA0-LOS

Item No : Qty : 1

Date : 30.04.09 Original/Replacement for/ PREP : MR SIEMENS SIEMENSSIEMENS SIEMENS CHKD : MS Dis: 1- W Stock, 2- W non stock, 3- W non stock others, 4- Project Supply, 5- Loose Supply

Circuit: GRP # UNIT10 APPD : MS

(4)-G719EA-XG970-ER901-R4 Replaced by

:-Description :- Equipment List ENGINEER : TCE CONSULTING ENGINEERS LIMITED

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64-1-UT10A Restricted earth fault protection CT SEC:1A SIEMENS 3 7SJ80 0 0 0 4 0 4

64-2-UT10A relay for LV Side Unit transformer Auxiliary voltage: 220V DC 64-1-UT10B Size: 1/6 19"; Mounting: Flush 64-2-UT10B 3 BI; 5 BO +1 LIVE STATUS CONTACT

IEC 61850 PROTOCOL, FO DOUBLE, ST CONNECTOR MLFB: 7SJ8011-5EB96-1FA0-LOS

64-1-ST1 Restricted earth fault protection CT SEC:1A SIEMENS 3 7SJ80 0 0 0 0 2 2

64-2-ST1 relay for LV Side Station transformer Auxiliary voltage: 220V DC Size: 1/6 19"; Mounting: Flush 3 BI; 5 BO +1 LIVE STATUS CONTACT IEC 61850 PROTOCOL, FO DOUBLE, ST CONNECTOR MLFB: 7SJ8011-5EB96-1FA0-LOS

BLK - GR1A / 1B /1C Test Block 10 Terminal AREVA 3 MPG 3 3 2 6 3 17

BLK - GR2A / 2B /2C BLK - 87G1 / 87G2 / 87A

BLK - 50A / 64A / 87B BLK - 50B / 64B / 87 / 50

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G20Hz 20Hz Generator for 100% SEF Model No : 7XT33 in 7XP20 Case SIEMENS 3 7XT33 1 0 0 0 0 1

(For 100% Stator Earth Fault) MLFB NO: 7XT3300-0CA00

FGR1 Bandpass Filter for 100% SEF Model No : 7XT34 in 7XP20 Case SIEMENS 3 7XT34 1 0 0 0 0 1

(For 100% Stator Earth Fault) MLFB NO: 7XT3400-0CA00

SCUGRI Controlling Unit for Rotor Earth Fault MLFB NO: 7XT7100-0EA00 SIEMENS 3 7XT71 0 1 0 0 0 1

(For Rotor Earth Fault)

RCUGR Resistor for 1-3Hz Rotor Earth Fault Protection MLFB NO: 7XR6004-0CA00 SIEMENS 3 7X600 0 1 0 0 0 1 (For Rotor Earth Fault)

59N Neutral Displacement earth fault PT Sec , 110V AC SIEMENS 3 7SJ62 0 1 0 0 0 1

protection relay Aux. Supply : 220V DC 11B/I,6 B/O+1 LIVE STATUS CONTACT CASE SIZE:1/3x19", IEC 61850 PROTOCOL MLFB:7SJ6221-6EB92-1FE0-LOS

Item No : Qty : 1

CHKD : MS PREP : MR Circuit: GRP # UNIT10 APPD : MS SIEMENS SIEMENSSIEMENS SIEMENS Original/Replacement for/ Replaced by

:-Dis: 1- W Stock, 2- W non stock, 3- W non stock others, 4- Project Supply, 5- Loose Supply

Date : 30.04.09

(4)-G719EA-XG970-ER901-R4

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195, 295 Trip Circuit Supervision relay 220V DC, 1N/O + 2N/C SR,Flag-Yes, AREVA 3 MVAXM31 0 0 2 0 0 2

for GCB Size:4 Midos: Mounting: Flush Model No:MVAXM31D1CE3005A WDG: F1MVAXM31001

GCB, GISOLA, Contact multiplication relay For Aux. Supply:220V DC AREVA 3 VAJC11 0 0 3 0 0 3

GISOLB GCB / Generator &I solator Case:1/2NV Contacts:4NO + 4N/C E/R Mounting:Flush, Flag: Yes WDG: BDZ075.6-9 MLFB NO: VAJC11ZF8305A(CH)

186B Trip Relay For UTA, UTB Trip Relay AREVA 3 MVAJ10 2 2 0 4 0 8

186C-2 Case : Midos case size :2

186D-UT10A Contacts : 8NO+2NC (Hand/Electrical Reset) 186D-UT10B Flag: Yes, Mounting: Flush

286B Aux supply : 220V DC

286C-2 Electrical Reset

286D-UT10A Model : MVAJ105JA1002A

286D-UT10B

186D-ST Trip Relay For ST Trip Relay AREVA 3 MVAJ10 0 0 0 0 2 2

286D-ST Case : Midos case size :2

Contacts : 8NO+2NC (Hand/Electrical Reset) Flag: Yes, Mounting: Flush

Aux supply : 220V DC Electrical Reset Model : MVAJ105JA1002A

ES-1, ES-2 Earthernet Swithes 10 Port Switch 10/100 MBPS RUGGED COM 3 RSG2100 0 0 1 1 0 2

Aus supply: 220V DC, Dual Supply 19" Rack Mounting Type 6 Optical Port (ST Connector) 4 RJ45 Port

RSG2100 -R-RM-HI-HI-FX01-FX01-FX01-XXXX-XXXX-XXXX--XXXX-XXXX-TX01-TX01

Item No : Qty : 1

Circuit: GRP # UNIT10 APPD : MS SIEMENS SIEMENSSIEMENS SIEMENS PREP : MR CHKD : MS Dis: 1- W Stock, 2- W non stock, 3- W non stock others, 4- Project Supply, 5- Loose Supply

Date : 30.04.09

:-Original/Replacement for/

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2/186A1, 2/186A2 Wipe out Timer Aux. Volt:220V DC, Contact : 2N/O , 2C/O , S/R AREVA 3 MVTTM 4 4 0 0 0 8 2/186B, 2/186C Delay on Pick up : 0.01 - 9.99s

2/286A1, 2/286A2 Case : Midos case size :3 MIDOS 2/286B, 2/286C Model No:MVTTM14C1AA1002A

WDG: F10MVTTM14501

PB01,PB02,PB03,PB04 Push Buttton for Trip Relay Reset- GROUP A Normal actuator with plastic front ring and holder of black colour SIEMENS 3 3SB 4 0 0 0 0 4 3SB1200- 0AB01 (ACTUATOR)+ 3SB1400-0A

PB05,PB06,PB07,PB08 Push Buttton for Trip Relay Reset- GROUP B contact block for rear connection SIEMENS 3 3SB 0 4 0 0 0 4 3SB1200- 0AB01 (ACTUATOR)+ 3SB1400-0A

PB09,PB10,PB11,PB12 Pushbutton contact block for rear connection SIEMENS 3 3SB 0 0 0 4 0 4

3SB1200- 0AB01 (ACTUATOR)+ 3SB1400-0A

PB13, PB14 Pushbutton contact block for rear connection SIEMENS 3 3SB 0 0 0 0 2 2

3SB1200- 0AB01 (ACTUATOR)+ 3SB1400-0A

LBBSW1, LBBSW2 LBB In-Out Selector Handle: Pistol Grip, Black,8 Ways SWITRON 3 SPC32P 1 1 0 0 0 2

switch for LBB protn. Position: IN/OUT,Stayput , LOCKABLE in both position

SL01, SL02 Indicating lamp for Relay DC1/DC2 healthy White Holder with indicator - 3SB14052WZ3 SIEMENS 3 3SB 1 1 0 0 0 2 Lamp Holder with Rear Connection-3SB04012C

DCSS DC Supply Selector Switch Stay Put Non-Lockable With Pistol Grip Handle SWITRON 3 1 0 0 0 0 1

Position (1) DC1 (2) INDEPENDENT (3) DC2 Bezel size: 75 Sq.mm

No. of Ways : 8

Item No : Qty : 1

Issue Remarks Date Name SIEMENSSIEMENSSIEMENSSIEMENS

Circuit: GRP # UNIT10 Original/Replacement for/

CHKD : MS

(4)-G719EA-XG970-ER901-R4 Dis: 1- W Stock, 2- W non stock, 3- W non stock others, 4- Project Supply, 5- Loose Supply

Client : COASTAL GUJARAT POWER LIMITED

Date : 30.04.09 PREP : MR

Sales Ref : 3001506934

Replaced by

:-APPD : MS

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INTERNALLY MOUNTED EQUIPMENTS

HT Space heater 100W,230V AC APT 3 1 1 1 1 1 5

CONTROL

HTS ON\OFF switch 15 A Anchor 1 1 1 1 1 1 5

PS Power socket 5/15A, 3Pin Anchor 1 1 1 1 1 1 5

TH Thermostat 30-90 deg cent APT 3 1 1 1 1 1 5

CONTROL

CILS Cubicle Door Operated Switch Limit Switch(1No+2Nc)-3SE30230A SIEMENS 1 1 1 1 1 1 5

CFL Compact Fluoroscent Lamp 240 V AC, 20W Philips 1 1 1 1 1 1 5

LK Link Base + Link and holder 3NW20NNSF+3NWNNSL SIEMENS 1 5 5 3 15 4 32

CT-1, CT-2 NCT for 100% SEF Protection 400/5A, 5VA SIEMENS 5 4NC5225 0 0 0 0 0 2

LOOSE SUPPLY Loose supply and same to be provided in Model No : 4NC 5225 NGT cubicle MLFB NO: 4NC5225-2CE20

SD1 Surge Divertor Model No.: C53207-A401-D77-1 SIEMENS 3 0 0 1 4 2 7

SR1 Stablizing Resistor Range : 0 - 1000 Ohms , 200Watts AREVA 3 0 0 1 4 2 7

DC MCB DC MCB 32A, 220VDC SIEMENS 3 1 1 0 0 0 2

Double Pole , Aux contact:1NC 10A, 220VDC SIEMENS 3 3 3 0 0 0 6

4A, 220VDC SIEMENS 3 1 1 10 4 2 18

AC MCB AC MCB 16A, 230VAC SIEMENS 3 1 1 1 1 1 5

Single Pole & Neutral , Aux contact:1NC

Test plug MPB Test Plug (LOOSE SUPPLY) AREVA 3 MPB 0 0 0 0 0 3

FO CABLE CABLE FO patch cable (ST-ST) 100BaseFX 1300nm, DLINK/ 5 MultiMode 62,5/125µm,2 core, Fibre Glass EQUIVALENT

a. 10m 0 0 0 0 0 1

b. 5m 0 0 0 0 0 6

c. 3m 0 0 0 0 0 13

D1 to D32 DIODE CDL4U(E)D3 CONNECTWELL 3 BY127 16 16 0 0 0 32

Item No : Qty : 1

Issue Remarks Date Name SIEMENSSIEMENSSIEMENSSIEMENS

CHKD : MS

Sales Ref : 3001506934

Original/Replacement for/

Circuit: GRP # UNIT10 APPD : MS

Date : 30.04.09 PREP : MR Dis: 1- W Stock, 2- W non stock, 3- W non stock others, 4- Project Supply, 5- Loose Supply

Client : COASTAL GUJARAT POWER LIMITED

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TM1703 CP-6014 Master Control Module MLFB: 6MF1113-0GA140-AA0BB SIEMENS 3 CP-6014 0 0 1 0 0 1

(For Transformer (4 - 20mA) Network interface Processor SM-2556 MLFB: 6MF1013-0CF56-0AA1 SIEMENS 3 SM-2556 0 0 2 0 0 2 Analog Input to Suitable for CM-2860 Patch Plug standard V28,ET,TR MLFB: 6MF1211-0CJ60-0AC0 SIEMENS 3 CM-2860 0 0 2 0 0 2 12AI) Mounted in DIN Channel PS-6630 Power Supply 24-60VDC EMC+ MLFB: 6MF1113-0GG30-0AA1 SIEMENS 3 PS-6630 0 0 3 0 0 3

AI-6300 Analog Input 2x2 ±20mA/±10V MLFB: 6MF1113-0GD00-0AA1 SIEMENS 3 AI-6300 0 0 6 0 0 6

DI-6102 Digital Input 2x8, 24-60VDC, Ims MLFB: 6MF1113-0GB002-0AA1 SIEMENS 3 DI-6102 0 0 12 0 0 12

PE-6410 Peripheral Contr. Ax-Bus electr. MLFB: 6MF1113-0GE100-AF0 SIEMENS 3 PE-6410 0 0 3 0 0 3

Flash Card 256MB MLFB: 6MF1213-1GA05-0AD0 SIEMENS 3 - 0 0 1 0 0 1

USB-Cable Type A-A AWG20/28 3m MLFB: 6MF1313-0GC01-0AA1 SIEMENS 3 - 0 0 3 0 0 3

TPP 3M TP Patch cable 3m Cat 5, grey MLFB: 6MF1304-0BC52-0AA1 3 - 0 0 3 0 0 3

Converter Input:220v DC Output:48V DC Phoenix 3 --- 0 0 1 0 0 1

CM-0843 Bus Interfaces Module Electrical MLFB: 6MF11110AJ430AH0 SIEMENS 3 CM-0843 0 0 1 0 0 1

PT MCB AC MCB 2A, 110VAC SIEMENS 3 3 3 3 0 0 9

Four Pole Aux contact:1 NC

3PP13 Resistor for under excitation protection MLFB NO: 3PP1326-OBZ-K2Y SIEMENS 3 3PP13 0 1 0 0 0 1

(Voltage divider, 20:1), group 012009

CAPACITOR Capacitor for Excitation circuit 10µF,250V Reputed 3 1 1

Item No : Qty : 1

Original/Replacement for/

:-Date : 30.04.09

Description :- Equipment List PREP : MR CHKD : MS Circuit: GRP # UNIT10 APPD : MS SIEMENS SIEMENSSIEMENS SIEMENS Page 8 of 8

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SIEMENS

TCE.5146A-704-0009

SITE1

MARKED THUS CORRECTION / MODIFICATION TO BE DONE AT SITE

BY COMMISIONING ENGINEER

DT 10.03.11

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SHEET

DRAWING DESCRIPTION

00 LIST OF DRAWINGS

01 LIST OF DRAWINGS

02 LIST OF REFERENCE DRAWINGS

03 LIST OF DRAWINGS

04 PROTECTION TRIP LOGIC - GROUP-1 05 PROTECTION TRIP INITIATION - GROUP-1 06 PROTECTION TRIP INITIATION - GROUP-1 07 PROTECTION TRIP INITIATION - GROUP-1 08 PROTECTION TRIP LOGIC - GROUP-2 09 PROTECTION TRIP INITIATION - GROUP-2 10 PROTECTION TRIP INITIATION - GROUP-2 11 PROTECTION TRIP INITIATION - GROUP-2

12 PROTECTION TRIP INITIATION - GROUP-2 & 4-20mA INPUTS TO RTU 13 DIGITAL INPUTS TO RTU

14 SYSTEM SINGLE LINE DIAGRAM 15 PROTECTION SINGLE LINE DIAGRAM 16 PROTECTION SINGLE LINE DIAGRAM 17 GEN. LINE SIDE CT CORE DISTRIBUTION 18 GEN. NEUTRAL SIDE CT CORE DISTRIBUTION 19 UT-10A CT CORE DISTRIBUTION

20 UT-10B CT CORE DISTRIBUTION 21 ST-1 CT CORE DISTRIBUTION 22 VT-1 CORE DISTRIBUTION 23 VT-2 CORE DISTRIBUTION 24 VT-3 CORE DISTRIBUTION 25 AC SUPPLY DISTRIBUTION 26 DC SUPPLY DISTRIBUTION CIRCUIT

27 VOLTAGE SUPVN. (60G11) RELAY CKT 28 VOLTAGE SUPVN. (60G12) RELAY CKT 29 VOLTAGE SUPVN. (60G13) RELAY CKT 30 VOLTAGE SUPVN. (60G21) RELAY CKT

31 VOLTAGE SUPVN. (60G22) RELAY CKT 32 VOLTAGE SUPVN. (60G23) RELAY CKT 33 GEN. PROTN. RELAY (GR-1) AC CKT 34 GEN. PROTN. RELAY (GR-1) B/I CKT 35 GEN. PROTN. RELAY (GR-1) B/I CKT

37 GEN. PROTN. RELAY (GR-1) B/O CKT 38 GEN. PROTN. RELAY (GR-2) AC CKT 39 GEN.- PROTN. RELAY (GR-2) B/I CKT 40 GEN. PROTN. RELAY (GR-2) B/I CKT 41 GEN. PROTN. RELAY (GR-2) B/O CKT 42 GEN. PROTN. RELAY (GR-2) B/O CKT 43 GEN. OPEN DELTA E/F PROTN. AC CKT 44 GEN. OPEN DELTA E/F PROTN. BI CKT 45 GEN. OPEN DELTA PROTN. BO CKT 46 GEN. GROUP-1 CLASS-A1 TRIP RELAY CKT 47 GEN. GROUP-1 CLASS-A2 TRIP RELAY CKT

48 GEN. GROUP-1 CLASS-A2 TRIP RELAY CKT 49 GEN. GROUP-1 CLASS-A2 TRIP RELAY CKT 50 GEN. GROUP-1 CLASS-B TRIP RELAY CKT 51 GEN. GROUP-1 CLASS-C TRIP RELAY CKT 52 GEN. GROUP-1 CLASS-C TRIP RELAY CKT 53 GEN. GROUP-2 CLASS-A1 TRIP RELAY CKT 54 GEN. GROUP-2 CLASS-A2 TRIP RELAY CKT

55 GEN. GROUP-2 CLASS A2 TRIP RELAY CKT 56 GEN. GROUP-2 CLASS A2 TRIP RELAY CKT 57 GEN. GROUP-2 CLASS B TRIP RELAY CKT 58 GEN. GROUP-2 CLASS C TRIP RELAY CKT 59 GEN. GROUP-2 CLASS C TRIP RELAY CKT 60 GT DIFF. PROTN. AC CIRCUIT

61 GT DIFF. PROTN. AC CIRCUIT 62 GT DIFF. PROTN. B/I CIRCUIT 63 GT DIFF. PROTN. B/I CIRCUIT 64 GT DIFF. PROTN. B/I CIRCUIT

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REV-0

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REV-1 REV-2

SHEET

DRAWING DESCRIPTION

REV-0

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REV-1 REV-2

36 GEN. PROTN. RELAY (GR-1) B/O CKT

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47A GEN. GROUP-1 CLASS-A2 TRIP RELAY CKT

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54A GEN. GROUP-2 CLASS-A2 TRIP RELAY CKT

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26A DC SUPPLY DISTRIBUTION CIRCUIT

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01A LIST OF DRAWINGS

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13A DIGITAL INPUTS TO RTU

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NOTE:-TB NOS & WIRE NOS MAY CHANGE DURING MANUFACTURING

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REV-3

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REV-4

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DRAWING DESCRIPTION

72 RTU DC DISTRIBUTION CIRCUIT

73 RTU ANALOG INPUT CARD-1 (4-20mA) CIRCUIT 74 RTU ANALOG INPUT CARD-2 (4-20mA) CIRCUIT 75 RTU ANALOG INPUT CARD-3 (4-20mA) CIRCUIT 76 RTU ANALOG INPUT CARD-4 (4-20mA) CIRCUIT

77 UT-A DIFF. PROTN. AC CIRCUIT 78 UT-A DIFF. PROTN. AC CIRCUIT 79 UT-A DIFF. PROTN. B/I CIRCUIT 80 UT-A DIFF. PROTN. B/I CIRCUIT 81 UT-A DIFF. PROTN. B/I CIRCUIT 82 UT-A DIFF. PROTN. B/O CIRCUIT 83 UT-A DIFF. PROTN. B/O CIRCUIT 84 UT-A HV SIDE O/C PROTN. AC CIRCUIT 85 UT-A HV O/C PROTN. B/I & B/O CIRCUIT

86 UNIT-10A SWGR-A LV REF PROTN. AC CIRCUIT 87 UNIT-10A SWGR-A LV REF. PROTN. B/I & B/O CIRCUIT 88 UNIT-10A SWGR-B LV REF PROTN. AC CIRCUIT 89 UNIT-10A SWGR-B REF. LV PROTN. B/I & B/O CIRCUIT 90 UNIT-10A GROUP-1 TRIP RELAY CKT

91 UNIT-10A GROUP-2 TRIP RELAY CKT

92 BLANK SHEET

93 UT-B DIFF. PROTN. AC CIRCUIT 94 UT-B DIFF. PROTN. AC CIRCUIT 95 UT-B DIFF. PROTN. B/I CIRCUIT 96 UT-B DIFF. PROTN. B/I CIRCUIT 97 UT-B DIFF. PROTN. B/I CIRCUIT 98 UT-A DIFF. PROTN. B/O CIRCUIT 99 UT-A DIFF. PROTN. B/O CIRCUIT 100 UT-B HV SIDE O/C PROTN. AC CIRCUIT 101 UT-B HV O/C PROTN. B/I & B/O CIRCUIT 102 UNIT-10B SWGR-A LV REF PROTN. AC CIRCUIT 103 UNIT-10B SWGR-A LV REF. PROTN. B/I & B/O CIRCUIT 104 UNIT-10B SWGR-B LV REF PROTN. AC CIRCUIT 105 UNIT-10B SWGR-B LV REF. PROTN. B/I & B/O CIRCUIT 106 UNIT-10B GROUP-1 TRIP RELAY CKT

107 UNIT-10B GROUP-2 TRIP RELAY CKT 108 ST DIFF. PROTN. AC CIRCUIT 109 ST DIFF. PROTN. AC CIRCUIT 110 ST DIFF. PROTN. B/I CIRCUIT 111 ST DIFF. PROTN. B/I CIRCUIT 112 ST-1 DIFF. PROTN. B/I CIRCUIT 113 ST DIFF. PROTN. B/O CIRCUIT 114 ST DIFF. PROTN. B/O CIRCUIT 115 ST HV SIDE O/C PROTN. AC CIRCUIT 116 ST HV O/C PROTN. B/I & B/O CIRCUIT 117 ST SWGR-A LV REF PROTN. AC CIRCUIT 118 ST SWGR-A LV REF. PROTN. B/I & B/O CIRCUIT 119 ST SWGR-B LV REF PROTN. AC CIRCUIT

SHEET

√

REV-0

√

REV-1 REV-2

√

REV-0

√

REV-1 REV-2

65 GT DIFF. PROTN. B/O CIRCUIT

66 GT DIFF. PROTN. B/O CIRCUIT 67 GT STAND BY E/F PROTN. AC CIRCUIT 68 GT STANDBY E/F PROTN B/I & B/O CIRCUIT 69 GCB CLOSING & TRIP COIL-1 CIRCUIT

70 ISOLATOR CONTACT MULTI. CIRCUIT 71 BREAKER CONTACT MULTI. CIRCUIT

√

69A TRIP COIL-2 CIRCUIT

√

76A RTU ANALOG INPUT CARD-5 (4-20mA) CIRCUIT

76B RTU ANALOG INPUT CARD-6 (4-20mA) CIRCUIT 76C RTU DIGTAL INPUT CARD-1 CIRCUIT 76D RTU DIGTAL INPUT CARD-2 CIRCUIT 76E RTU DIGTAL INPUT CARD-3 CIRCUIT 76F RTU DIGTAL INPUT CARD-4 CIRCUIT 76G RTU DIGTAL INPUT CARD-5 CIRCUIT 76H RTU DIGTAL INPUT CARD-6 CIRCUIT 76J RTU DIGTAL INPUT CARD-7 CIRCUIT 76K RTU DIGTAL INPUT CARD-8 CIRCUIT 76L RTU DIGTAL INPUT CARD-9 CIRCUIT 76M RTU DIGTAL INPUT CARD-10 CIRCUIT

√

76N RTU DIGTAL INPUT CARD-11 CIRCUIT

76P RTU DIGTAL INPUT CARD-12 CIRCUIT

REV-3

√

REV-4

√

(23)

DRAWING DESCRIPTION

120 ST SWGR-B LV REF. PROTN. B/I & B/O CIRCUIT

125 400KV MAIN CB & TIE CB LBB & CLOSING INTERLOCK CIRCUIT 121 ST GROUP-1 TRIP RELAY CKT

122 ST GROUP-2 TRIP RELAY CKT

123 BLANK SHEET

124 400KV MAIN CB & TIE CB TRIPPING CKT

126 STEAM TURBINE INTERLOCK CIRCUIT 127 FIELD EXCITATION INTERLOCK CIRCUIT 128 UNIT-10A SWGR. INTERLOCK CIRCUIT 129 UNIT-10 SWGR. INTERLOCK CIRCUIT 130 ST-1 SWGR INTERLOCK CIRCUIT

131 BLOCK CONTACT DISTRIBUTION

134 SWITCH CONTACT DISTRIBUTION

135 DCS CIRCUIT

SHEET

REV-0 REV-1 REV-2

√

136 STAND ALONE DISTURBANCE RECORDER

√

137 COMMUNICATION DIAGRAM

√

REV-3

√

REV-4

√

(24)

AREVA 1. 26KV BREKAER

LIST OF REFERENCE DRAWINGS/DOCUMENTS

DRAWING REF.

TCE.5146A-739-AU-3001 - SHEET 1 & 2 MAIN ONE LINE DIAGRAM

DESCRIPTION

2. 26KV ISOLATOR TCE

MAKE

2. 26KV CVT 310MVA ,400KV/26KV GENERATOR 63/31.5/31.5 MVA,,26/11.5/11.5KV UNIT TRANSFORMER 63/31.5/31.5MVA,26/11.5/11.5KV NEUTRAL GROUNDING TRANSFORMER DCDB DRAWING

ACDB DRAWING STATION TRANSFORMER 960MVA,26KV GENERATOR

TRANSFORMER

34566250672 - COOLER CONTROL GEAR BHEL,

JHANSI INDIVIDUAL KIOSK-34526200113

COMMON KIOSK-34526200112

BHEL

CONTROL ROOM LAYOUT TCE.5146A-580-GA-1701A TCE

TOSHIBA GCB ENCLOSURE

(25)

LEGEND

DESCRIPTOIN

CT TERMINATIONS

BAY MARSHALLING BOX TERMINATIONS ISOLATOR TERMINATIONS

PT TERMINATIONS CB TERMINATIONS

SYMBOLS

RELAY PANEL TERMINAL BLOCK OTHER SUPPLIER'S PANEL TB DISCONNECTING TERMINAL BLOCK

TO EXCITER, AVR, TURBINE CIRCUITS

X51A X11A X13A

TERMINAL

SPARE PT CIRCUIT CT CIRCUIT

DESCRIPTOIN-10CHA00GH001

X43A X41A TO SRP X91A TO ALARM

DESCRIPTOIN-10CHA00GH002

DESCRIPTOIN-10CHA00GH003

DESCRIPTOIN-10CHA00GH004

WIRE CROSS REFERENCE STANDARDS

K101 FERRULE NUMBER

12 SHEET NUMBER

W951-03 DRAWING NO. WITH SHEET NO.

DESCRIPTOIN

REPRESENTATION

X61 TO ACDB

X62 TO DCDB-1

X63 TO DCDB-2

STRIP

TERMINAL

_STRIP

TERMINAL

STRIP

TERMINAL

STRIP

X2A TO BREAKER (GCB) X3A TO ISOLATOR X42A TO GT, UT, ST

X51B X11B X13B SPARE PT CIRCUIT CT CIRCUIT X43B X41B TO SRP X91B TO ALARM X61 TO ACDB X62 TO DCDB-1 X63 TO DCDB-2 X2B TO BREAKER (GCB) X3B TO ISOLATOR X42B TO GT, UT, ST

X51C X44C X11C X13C SPARE TO RTU PT CIRCUIT CT CIRCUIT X43C X41C TO SRP X2C TO BREAKER (GCB) X3C TO ISOLATOR X42C TO GT, UT, ST

TO EXCITER, AVR, TURBINE CIRCUITS X51DA X11DA X13DA SPARE PT CIRCUIT CT CIRCUIT X43DA X41DA TO SRP X2DA TO BREAKER (GCB) X3DA TO ISOLATOR X42DA TO GT, UT, ST

DESCRIPTOIN-10CHA00GH005

TERMINAL

STRIP

TO EXCITER, AVR, TURBINE CIRCUITS X51E X11E X13E SPARE PT CIRCUIT CT CIRCUIT X43E X41E TO SRP X2E TO BREAKER (GCB) X3E TO ISOLATOR X42E TO GT, UT, ST TO 11kV UNIT-10A SWGR-A,B X45A

X79 AC SUPPLY BUS WIRE

X71

X77 DC SUPPLY BUS WIRE

DIODE TERRMINAL BLOCK

X50A X50B DIODE TERRMINAL BLOCK

X71

TO 11kV UNIT-10B SWGR-A,B X46A TO 11kV STATION SWGR-A,B X47A TO 11kV UNIT-10A SWGR-A,B X45A TO 11kV UNIT-10B SWGR-A,B X46A TO 11kV STATION SWGR-A,B X47A

TRIP BUS WIRE NUMBER

CLASS-A1

CLASS-A2

CLASS-B

CLASS-C

CLASS-D-UT10A

GROUP-1

GROUP-2

K103

K303

K503

K703

K903

CLASS-D-UT10B

K1103

CLASS-D-ST

K1303

K203

K403

K603

K803

K1003

K1203

K1403

X81C GCP CIRCUIT X82C GCP CIRCUIT

TO EXCITER, AVR, TURBINE CIRCUITS X51DB X11DB X13DB SPARE PT CIRCUIT CT CIRCUIT X43DB X41DB TO SRP X2DB TO BREAKER (GCB) X3DB TO ISOLATOR X42DB TO GT, UT, ST X83D TO DCS X84D TO DISTURBANCE RECORDER

(26)

186A1 186A2 186B 186C 186D-UT1A 186D-UT1B 186D-ST G C B 5 0 L B B ,G R -1 G T H V M A IN C B , 5 0 L B B G T H V M ID D L E C B , 5 0 L B B G C B T R IP C O IL -1 G C B T R IP C O IL -2 G T H V M A IN C B , T R IP C O IL -1 G T H V M A IN C B , T R IP C O IL -2 1 1 K V U N IT -A , S W IT C H G E A R -A I N C O M E R T R IP C O IL G T H V M ID D L E C B , T R IP C O IL -1 G T H V M ID D L E C B , T R IP C O IL -2 1 1 K V U N IT -A , S W IT C H G E A R -B I N C O M E R T R IP C O IL 1 1 K V U N IT -B , S W IT C H G E A R -A I N C O M E R T R IP C O IL 1 1 K V U N IT -B , S W IT C H G E A R -B I N C O M E R T R IP C O IL 1 1 K V S T A T IO N , S W IT C H G E A R -A I N C O M E R T R IP C O IL 1 1 K V S T A T IO N , S W IT C H G E A R -B I N C O M E R T R IP C O IL F IE L D C B T R IP C O IL T U R B IN E T R IP C H A N N E L -1 T U R B IN E T R IP C H A N N E L -2 1 1 K V U N IT -A , S W IT C H G E A R -A I N C O M E R L B B 1 1 K V U N IT -A ,S W IT C H G E A R -B I N C O M E R L B B 1 1 K V U N IT -B ,S W IT C H G E A R -A I N C O M E R L B B 1 1 K V U N IT -B ,S W IT C H G E A R -B I N C O M E R L B B 1 1 K V S T A T IO N ,, S W IT C H G E A R -A I N C O M E R L B B 1 1 K V S T A T IO N , S W IT C H G E A R -B I N C O M E R L B B W IP E O U T T IM E R 2 /2 8 6 A 1 W IP E O U T T IM E R 2 /2 8 6 A 2 W IP E O U T T IM E R 2 /2 8 6 B W IP E O U T T IM E R 2 /2 8 6 C GROUP-1 PROTECTIONS X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

LEGEND OF TRIP RELAYS - GROUP-1

186A1 GROUP-1 CLASS A1 MASTER TRIP RELAY FOR CRITICAL GENERATOR FAULTS

186A2 GROUP-1 CLASS A2 MASTER TRIP RELAY FOR CRITICAL GENERATOR FAULTS IN GT,UT & ST

186B GROUP-1 CLASS B MASTER TRIP RELAY FOR NON CRITICAL GENERATOR FAULTS

186C GROUP-1 CLASS C MASTER TRIP RELAY FOR FAULTS EXTERNAL TO THE PLANT

186D-UT GROUP-1 UT CLASS D MASTER TRIP RELAY FOR THERMAL OVER LOAD PROTECTIONS OF UT 186D-ST GROUP-1 ST CLASS D MASTER TRIP RELAY FOR THERMAL OVER LOAD PROTECTIONS OF ST

286C GROUP-2 CLASS C MASTER TRIP RELAY FOR FAULTS EXTERNAL TO THE PLANT

LEGEND OF TRIP RELAYS - GROUP-2

PROTECTION TRIP LOGIC - GROUP-1

(27)

GENERATOR DIFFERENTIAL PROTECTION(87G) GENERATOR UNDER IMPEDANCE (21G),TIMER STAGE -1

GENERATOR UNDER FREQUENCY STAGE-1 (81UF)

GENERATOR UNDER FREQUENCY STAGE-2 (81UF) TIME STAGE-1

GENERATOR OVER FREQUENCY (81OF)

GENERATOR UNDER IMPEDANCE (21G),TIMER STAGE -2

REVERSE POWER RELAY(32G) + TIMER STAGE -2

GENERATOR UNDER VOLTAGE (27G) GENERATOR OVER VOLTAGE STAGE-1 (59G) GENERATOR OVER VOLATGE STAGE-2 (59G) GENERATOR OVER EXCITATION STAGE-1 (99G)

GENERATOR OVER EXCITATION STAGE-2 (24G) WITH GCB CLOSED GENERATOR OVER EXCITATION STAGE-2 (24G) WITH GCB OPEN GENERATOR POLE SLIPPING (78G)

GENERATOR LOSS OF EXCITATION (40G)

GENERATOR LOSS OF EXCITATION WITH UNDER VOLTAGE(27/40G) GENERATOR NEGATIVE PHASE SEQUENCE(46) STAGE-1

GENERATOR NEGATIVE PHASE SEQUENCE(46) STAGE-2, TIMER STAGE-1

GROUP-1 PROTECTION INITIATION OF MASTER TRIP RELAYS BY PROTECTIVE DEVICES

GROUP-1 PROTECTIONS

1

SL. NO.

186A1

186A2

186B

186C

186D-UT1A186D-UT1B 186D-ST

286A2

ALARM

GENERATOR NEGATIVE PHASE SEQUENCE(46) STAGE-2, TIMER STAGE-2 GENERATOR STATOR OVER LOAD (50GS)

GENERATOR STATOR EARTH FAULT 95% (64G3) GENERATOR STATOR EARTH FAULT 100% (64G1) GENERATOR ROTOR EARTH FAULT (64F2) - STAGE-1

GCB LOCAL BREAKER BACKUP (50LBB) DEAD MACHINE PROTECTION (61B)

VOLATGE BALANCE PROTECTION (60G11) VOLATGE BALANCE PROTECTION (60G12) VOLATGE BALANCE PROTECTION (60G13)

X

2 3 4 5 6 7 8 9 10 12 11 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 29 29 30 31

X

RELAY TYPE

I. GENERATOR PROTECTION

RELAY REF.

7UM62 GR1 MVAPM32 60G11 MVAPM32 60G12 MVAPM32 60G13

X

GENERATOR ROTOR EARTH FAULT (64F2) - STAGE-2

27

GENERATOR ROTOR EARTH FAULT (64F1) 30

TOSHIBA TOSHIBA

X

SITE1

EXCITATION TRANSFORMER VERY HIGH

X

32

SITE1

(28)

GT STANDBY EARTH FAULT (51NGT) WITHOUT TIMER GT STANDBY EARTH FAULT WITH TIMER

GT PRESSURE RELIEF VALVE-A OPTD. GT OIL TEMPERATURE TRIP GT BUCHHOLZ TRIP (63T)

GT FIRE PROTECTION TRIP (63FT)

GROUP-1 PROTECTION INITIATION OF MASTER TRIP RELAYS BY PROTECTIVE DEVICES

GROUP-1 PROTECTIONS

1

SL. NO.

186A1

186A2

186B

186C

186D-UT1A186D-UT1B 186D-ST

286A2

ALARM

X

2 3 4 5 6

RELAY TYPE

X

II. GENERATOR TRANSFORMER PROTECTION

RELAY REF.

7SJ80 51NGT

BI OF 7UT633

X

III. UNIT TRANSFORMER-10A PROTECTIONS

UT INSTANTANEOUS OVER CURRENT (50UT) UT HV SIDE IDMT OVER CURRENT (51UT) UT LV SIDE IDMT EARTH FAULT (51NUT-LV1 & LV2) UT BUCHHOLZ TRIP (63T)

UT OIL TEMPERATURE TRIP (49OT) 1 2 3 4 5 6 7 8

X

7SJ80 50-UT10A BI OF 7UT633 87/51-UT10A UT OIL TEMPERATURE ALARM (OTA)

UT BUCHHOLZ ALARM(63A)

UT PUMP OIL FLOW LOW ALARM GROUP-1

X

IV. UNIT TRANSFORMER-10B PROTECTIONS

UT INSTANTANEOUS OVER CURRENT (50UT) UT HV SIDE IDMT OVER CURRENT (51UT) UT LV SIDE IDMT EARTH FAULT (51NUT-LV1 & LV2) UT BUCHHOLZ TRIP (63T)

UT OIL TEMPERATURE TRIP (49OT) 1 2 3 4 5 6 7 8

X

7SJ80 50-UT10B BI OF 7UT633 87/51-UT10B UT OIL TEMPERATURE ALARM (OTA)

UT BUCHHOLZ ALARM(63A)

UT PUMP OIL FLOW LOW ALARM GROUP-1

X

SITE1

(29)

V. STATION TRANSFORMER PROTECTIONS

ST INSTANTANEOUS OVER CURRENT (50ST) ST HV SIDE IDMT OVER CURRENT (51ST) ST LV SIDE IDMT EARTH FAULT (51NST-LV1 & LV2) ST BUCHHOLZ TRIP (63T)

ST OIL TEMPERATURE TRIP (49OT) 1 2 3 4 5 6 7 8

X

7SJ80 50-ST1 BI OF 7UT633 87/51-ST1 ST OIL TEMPERATURE ALARM (OTA)

ST BUCHHOLZ ALARM(63A)

ST PUMP OIL FLOW LOW ALARM GROUP-1

X

GROUP-1 PROTECTION INITIATION OF MASTER TRIP RELAYS BY PROTECTIVE DEVICES

EXCITATION SYSTEM FAULTS - NON CRITICAL EXCITATION SYSTEM FAULTS - CRITICAL

OVERALL DIFFERENTIAL (87OA)

11KV UNIT A, SWITCHGEAR-A INCOMER LBB 11KV UNIT A, SWITCHGEAR-B INCOMER LBB 11KV UNIT B, SWITCHGEAR-A INCOMER LBB 11KV UNIT B, SWITCHGEAR-B INCOMER LBB 11KV STATION, SWITCHGEAR-A INCOMER LBB

VI. AVR

1

11KV STATION, SWITCHGEAR-B INCOMER LBB 2 1 2 3 4 5 6 7 8 9 11 12 13

X

GT HV MAIN CB LBB GT HV MIDDLE CB LBB

WIPE OUT TIMER 2/186A2 WIPE OUT TIMER 2/186B WIPE OUT TIMER 2/186C

VII. OVERALL PROTECTIONS

X

10 WIPE OUT TIMER 2/186A1

X

AVR -FROM SRP 87OA - -AVR -UNIT-A -FROM SRP FROM SRP SWITCHGEAR-A UNIT-A SWITCHGEAR-B UNIT-B SWITCHGEAR-A UNIT-B SWITCHGEAR-B -STATION SWITCHGEAR-A -STATION SWITCHGEAR-B

(30)

-286A1 286A2 286B 286C 286D-UT1A 286D-UT1B 286D-ST G C B 5 0 L B B ,G R -2 G T H V M A IN C B , 5 0 L B B G T H V M ID D L E C B , 5 0 L B B G C B T R IP C O IL -1 G C B T R IP C O IL -2 G T H V M A IN C B , T R IP C O IL -1 G T H V M A IN C B , T R IP C O IL -2 1 1 K V U N IT -A , S W IT C H G E A R -A I N C O M E R T R IP C O IL G T H V M ID D L E C B , T R IP C O IL -1 G T H V M ID D L E C B , T R IP C O IL -2 1 1 K V U N IT -A , S W IT C H G E A R -B I N C O M E R T R IP C O IL 1 1 K V U N IT -B , S W IT C H G E A R -A I N C O M E R T R IP C O IL 1 1 K V U N IT -B , S W IT C H G E A R -B I N C O M E R T R IP C O IL 1 1 K V S T A T IO N , S W IT C H G E A R -A I N C O M E R T R IP C O IL 1 1 K V S T A T IO N , S W IT C H G E A R -B I N C O M E R T R IP C O IL F IE L D C B T R IP C O IL T U R B IN E T R IP C H A N N E L -1 T U R B IN E T R IP C H A N N E L -2 1 1 K V U N IT -A , S W IT C H G E A R -A I N C O M E R L B B 1 1 K V U N IT -A ,S W IT C H G E A R -B I N C O M E R L B B 1 1 K V U N IT -B ,S W IT C H G E A R -A I N C O M E R L B B 1 1 K V U N IT -B ,S W IT C H G E A R -B I N C O M E R L B B 1 1 K V S T A T IO N ,, S W IT C H G E A R -A I N C O M E R L B B 1 1 K V S T A T IO N , S W IT C H G E A R -B I N C O M E R L B B W IP E O U T T IM E R 2 /2 8 6 A 1 W IP E O U T T IM E R 2 /1 8 6 A 2 W IP E O U T T IM E R 2 /1 8 6 B W IP E O U T T IM E R 2 /1 8 6 C GROUP-2 PROTECTIONS X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

LEGEND OF TRIP RELAYS - GROUP-1

186C GROUP-1 CLASS C MASTER TRIP RELAY FOR FAULLTS EXTERNAL TO THE PLANT

286C GROUP-2 CLASS C MASTER TRIP RELAY FOR FAULLTS EXTERNAL TO THE PLANT

LEGEND OF TRIP RELAYS - GROUP-2

(31)

GENERATOR DIFFERENTIAL PROTECTION(87G) GENERATOR UNDER IMPEDANCE (21G),TIMER STAGE -1

GENERATOR UNDER FREQUENCY STAGE-1 (81UF)

GENERATOR OVER FREQUENCY (81OF)

GENERATOR UNDER IMPEDANCE (21G),TIMER STAGE -2

REVERSE POWER RELAY(32G)+TURBINE TRIP RELAY OPERATED/ TIME STAGE-1 +TURBINE TRIP CH- 1/2

REVERSE POWER RELAY(32G) + TIME STAGE -2

LOW POWER RELAY(37G)+TURBINE TRIP RELAY OPERATED/ TIMER + TURBINE TRIP CH- 1/2

GENERATOR UNDER VOLTAGE (27G) GENERATOR OVER VOLTAGE STAGE-1 (59G) GENERATOR OVER VOLATGE STAGE-2 (59G) GENERATOR OVER EXCITATION STAGE-1 (24G)

GENERATOR OVER EXCITATION STAGE-2 (24G) WITH GCB CLOSED GENERATOR OVER EXCITATION STAGE-2 (24G) WITH GCB OPEN GENERATOR POLE SLIPPING (78G)

GENERATOR LOSS OF EXCITATION (40G)

GENERATOR LOSS OF EXCITATION WITH UNDER VOLTAGE(27/40G) GENERATOR NEGATIVE PHASE SEQUENCE(46) STAGE-1

GENERATOR NEGATIVE PHASE SEQUENCE(46) STAGE-2, TIMER STAGE-1

GROUP-2 PROTECTION INITIATION OF MASTER TRIP RELAYS BY PROTECTIVE DEVICES

GROUP-2 PROTECTIONS

1

SL. NO.

286A1

286A2

286B

286C

286D-UT1A286D-UT1B 286D-ST

186A2

ALARM

GENERATOR NEGATIVE PHASE SEQUENCE(46) STAGE-2, TIMER STAGE-2 GENERATOR STATOR OVER LOAD (50GS)

GENERATOR STATOR EARTH FAULT 95% (64G3) GCB LOCAL BREAKER BACKUP (50LBB) DEAD MACHINE PROTECTION (61B)

VOLATGE BALANCE PROTECTION (60G21) VOLATGE BALANCE PROTECTION (60G22) VOLATGE BALANCE PROTECTION (60G23)

X

2 3 4 5 6 7 8 9 10 12 11 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

X

RELAY TYPE

I. GENERATOR PROTECTION

RELAY REF.

7UM62 GR2 MVAPM32 60G21 MVAPM32 60G22 MVAPM32 60G23

X

GENERATOR OPEN DELTA EARTH FAULT PROTECTION (59N)

30 7SJ62 59N

X

GENERATOR ROTOR EARTH FAULT (64F2) STAGE-1 26

X

GENERATOR ROTOR EARTH FAULT (64F2) STAGE-2

27

GENERATOR ROTOR EARTH FAULT (64F1)

27 TOSHIBA TOSHIBA

X

SITE1 SITE1

(32)

GT OVERHEAD LINE DIFFERENTIAL PROTECTION (87OH) GT SUDDEN PRESSURE RELAY TRIP

GT DIFFERENTIAL (87GT)

GT OVER FLUXING PROTECTION (99GT) STAGE-1

GT PRESSURE RELIEF VALVE-B TRIP GT RESTRICTED EARTH FAULT (64GT)

GT OVER FLUXING PROTECTION (99GT) STAGE-2

III. UNIT TRANSFORMER-10A PROTECTIONS

GROUP-2 PROTECTION INITIATION OF MASTER TRIP RELAYS BY PROTECTIVE DEVICES

GROUP-2 PROTECTIONS

1

SL. NO.

286A1

286A2

286B

286C

286D-UT1A286D-UT1B 286D-ST

186A2

ALARM

X

2 3 4 5 6 9

10 GT OLTC OIL SURGE TRIP

RELAY TYPE

X

II. GENERATOR TRANSFORMER PROTECTION

RELAY REF.

7UT633 FROM SRP 87OH

X

BI OF 59N

X

UT DIFFERENTIAL PROTECTION (87UT) UT RESTRICTED EARTH FAULT (64UT) - LV1 & LV2 UT FIRE PROTECTION TRIP (63FT)

UT PRESSURE RELIEF DEVICE TRIP (63PRD)

UT LV1 WINDING TEMPERATURE TRIP (49WT) 1 2 3 4 5 6

X

7UT633 87/51-UT10A BI OF 7UT633 87/51-UT10A

X

7SJ80 64-1-UT10A 64-2-UT10A

UT HV WINDING TEMPERATURE TRIP (49WT)

X

UT LV2 WINDING TEMPERATURE TRIP (49WT)

7

X

UT OFF CIRCUIT TRIP SWITCH ABNORMAL POSITION TRIP

8

X

UT HV WINDING TERMPERATURE ALARM 9

UT LV1 WINDING TERMPERATURE ALARM 10

PUMP OIL FLOW LOW GROUP-2 ALARM 12

X

GT HV WINDING TEMPERATURE TRIP

GT LV WINDING TEMPERATURE TRIP 7

8

X

SITE1

(33)

IV. UNIT TRANSFORMER-10B PROTECTIONS

GROUP-2 PROTECTION INITIATION OF MASTER TRIP RELAYS BY PROTECTIVE DEVICES

GROUP-2 PROTECTIONS

SL. NO.

RELAY TYPE RELAY REF.

286A1

286A2

286B

286C

286D-UT1A286D-UT1B 286D-ST

186A2

ALARM

UT DIFFERENTIAL PROTECTION (87UT) UT RESTRICTED EARTH FAULT (64UT) - LV1 & LV2 UT FIRE PROTECTION TRIP (63FT)

UT PRESSURE RELIEF DEVICE TRIP (63PRD)

UT LV1 WINDING TEMPERATURE TRIP (49WT) 1 2 3 4 5 6

X

7UT633 87/51-UT10B BI OF 7UT633 87/51-UT10B

X

7SJ80 64-1-UT10B_64-2-UT10B

UT HV WINDING TEMPERATURE TRIP (49WT)

X

UT LV2 WINDING TEMPERATURE TRIP (49WT)

7

X

UT OFF CIRCUIT TRIP SWITCH ABNORMAL POSITION TRIP

8

X

UT HV WINDING TERMPERATURE ALARM 9

X

V. STATION TRANDFORMER PROTECTIONS

ST DIFFERENTIAL PROTECTION (87ST) ST RESTRICTED EARTH FAULT (64ST) - LV1 & LV2 ST FIRE PROTECTION TRIP (63FT)

ST PRESSURE RELIEF DEVICE TRIP (63PRD)

ST LV1 WINDING TEMPERATURE TRIP (49WT) 1 2 3 4 5 6

X

7UT633 87/51-ST1 BI OF 7UT633 87/51-ST1

X

7SJ80 64-1-ST1 64-2-ST1

ST HV WINDING TEMPERATURE TRIP (49WT)

X

ST LV2 WINDING TEMPERATURE TRIP (49WT)

7

X

ST OFF CIRCUIT TRIP SWITCH ABNORMAL POSITION TRIP

8

X

ST HV WINDING TERMPERATURE ALARM 9

ST LV1 WINDING TERMPERATURE ALARM 10

ST LV2 WINDING TERMPERATURE ALARM 11

X

(34)

11KV UNIT A, SWITCHGEAR-A INCOMER LBB 11KV UNIT A, SWITCHGEAR-B INCOMER LBB 11KV UNIT B, SWITCHGEAR-A INCOMER LBB 11KV UNIT B, SWITCHGEAR-B INCOMER LBB 11KV STATION, SWITCHGEAR-A INCOMER LBB

GROUP-2 PROTECTION INITIATION OF MASTER TRIP RELAYS BY PROTECTIVE DEVICES

SL. NO.

286A1

286A2

286B

286C

286D-UT1A286D-UT1B 286D-ST

186A2

ALARM

11KV STATION, SWITCHGEAR-B INCOMER LBB 1 2 3 4 5 6 7 8 9 11 12

FROM

GT HV MAIN CB LBB GT HV MIDDLE CB LBB

WIPE OUT TIMER 2/286A2 WIPE OUT TIMER 2/286B WIPE OUT TIMER 2/286C

VI. OVERALL PROTECTIONS

X

10

WIPE OUT TIMER 2/286A1

X

GROUP-2 PROTECTIONS

RELAY REF.

UNIT-A -FROM SRP FROM SRP SWITCHGEAR-A UNIT-A SWITCHGEAR-B UNIT-B SWITCHGEAR-A UNIT-B SWITCHGEAR-B -STATION SWITCHGEAR-A -STATION SWITCHGEAR-B

-GT-1 HV R-Ph WINDING TEMPERATURE INDICATION GT-1 LV R-Ph WINDING TEMPERATURE INDICATION

4-20mA INPUTS TO ANALOG CARD - AI1

PAGE

1 2 3 4

FUNCTIONS

GT-1 HV Y-Ph WINDING TEMPERATURE INDICATION GT-1 LV Y-Ph WINDING TEMPERATURE INDICATION

73

GT-1 HV B-Ph WINDING TEMPERATURE INDICATION GT-1 LV B-Ph WINDING TEMPERATURE INDICATION

4-20mA INPUTS TO ANALOG CARD - AI2

PAGE

1 2 3 4

FUNCTIONS

GT-1 B-Ph OIL TEMPERATURE INDICATION UT-10A HV WINDING TERMPERATURE INDICATION

74

UT-10A LV1 WINDING TEMPERATURE INDICATION UT-10A LV2 WINDING TEMPERATURE INDICATION

4-20mA INPUTS TO ANALOG CARD - AI3

PAGE

1 2 3 4

FUNCTIONS

UT-10A OIL TEMPERATURE INDICATION UT-10B HV WINDING TERMPERATURE INDICATION

75 4-20mA INPUTS TO ANALOG CARD - AI4

PAGE

1 2 3 4

FUNCTIONS

76 4-20mA INPUTS TO ANALOG CARD - AI5

PAGE

1 2 3 4

FUNCTIONS

76A

GT-1 R-PH OLTC TAP POSITION GT-1 Y-PH OLTC TAP POSITION

4-20mA INPUTS TO ANALOG CARD - AI6

PAGE

1 2 3 4

FUNCTIONS

GT-1 B-PH OLTC TAP POSITION GT-1 Y-Ph OIL TEMPERATURE INDICATION

76B

UT-10B LV1 WINDING TEMPERATURE INDICATION

UT-10B LV2 WINDING TEMPERATURE INDICATION UT-10B OIL TEMPERATURE INDICATION ST-1 HV WINDING TERMPERATURE INDICATION

ST-1 LV1 WINDING TEMPERATURE INDICATION ST-1 LV2 WINDING TEMPERATURE INDICATION ST-1 OIL TEMPERATURE INDICATION GT-1 R-Ph OIL TEMPERATURE INDICATION

INPUT

(35)

UT-10A BANK-1 FANS ON UT-10A BANK-2 FANS ON UT-10A BANK-1 PUMPS ON UT-10A BANK-2 PUMPS ON UT-10A 415V AC SUPPLY-1 ON

INPUTS TO RTU DIGITAL CARD - DI1

INPUT

UT-10A 415V AC SUPPLY-2 ON 1 2 3 4 5 6 7 8 9

PAGE

UT-10A FAN CONTROL ON - MANUAL UT-10A FAN CONTROL ON - AUTO

UT-10A PUMPS CONTROL ON -AUTO 10

UT-10A PUMPS CONTROL ON -MANUAL

FUNCTIONS

76C

UT-10A BANK-1 FAN FAIL 11

UT-10A BANK-2 FAN FAIL 12

UT-10A BANK-1 PUMP FAIL 13

UT-10A BANK-2 PUMP FAIL 14

UT-10A COOLER POWER SUPPLY AUTO CHANGEOVER FAIL 15

UT-10A CONTROL SUPPLY FAIL 16

UT-10B BANK-1 FANS ON UT-10B BANK-2 FANS ON UT-10B BANK-1 PUMPS ON UT-10B BANK-2 PUMPS ON UT-10B 415V AC SUPPLY-1 ON

INPUTS TO RTU DIGITAL CARD - DI2

INPUT

UT-10B 415V AC SUPPLY-2 ON 1 2 3 4 5 6 7 8 9

PAGE

UT-10B FAN CONTROL ON - MANUAL UT-10B FAN CONTROL ON - AUTO

UT-10B PUMPS CONTROL ON -AUTO 10

UT-10B PUMPS CONTROL ON -MANUAL

FUNCTIONS

76D

UT-10B BANK-1 FAN FAIL 11

UT-10B BANK-2 FAN FAIL 12

UT-10B BANK-1 PUMP FAIL 13

UT-10B BANK-2 PUMP FAIL 14

UT-10B COOLER POWER SUPPLY AUTO CHANGEOVER FAIL 15

UT-10B CONTROL SUPPLY FAIL 16

GT-1 R-Ph NORMAL COOLER FAIL GT-1 R-Ph STANDBY COOLER FAIL GT-1 R-Ph COOLER CONTROL SUPPLY FAIL GT-1 R-Ph OIL FLOW LOW COOLER-A GT-1 R-Ph OIL FLOW LOW COOLER-B

INPUTS TO RTU DIGITAL CARD - DI3

INPUT

GT-1 R-Ph OIL FLOW LOW COOLER-C 1 2 3 4 5 6 7 8 9

PAGE

GT-1 R-Ph OIL FLOW LOW COOLER-D GT-1 R-Ph OIL FLOW LOW COOLER-E

GT-1 R-Ph LOW OIL LEVEL ALARM 10

GT-1 R-Ph OIL FLOW LOW COOLER-F

FUNCTIONS

76E GT-1 R-Ph HV WTI ALARM 11 GT-1 R-Ph LV WTI ALARM 12

GT-1 R-Ph HOTSPOT WDG. TEMP. ALARM THROUGH FOTS 13 GT-1 R-Ph OTI ALARM 14 GT-1 R-Ph BUCHHOLZ ALARM 15 SPARE 16

GT-1 Y-Ph NORMAL COOLER FAIL GT-1 Y-Ph STANDBY COOLER FAIL GT-1 Y-Ph COOLER CONTROL SUPPLY FAIL GT-1 Y-Ph OIL FLOW LOW COOLER-A GT-1 Y-Ph OIL FLOW LOW COOLER-B

INPUTS TO RTU DIGITAL CARD - DI4

INPUT

GT-1 Y-Ph OIL FLOW LOW COOLER-C 1 2 3 4 5 6 7 8 9

PAGE

GT-1 Y-Ph OIL FLOW LOW COOLER-D GT-1 Y-Ph OIL FLOW LOW COOLER-E

GT-1 Y-Ph LOW OIL LEVEL ALARM 10

GT-1 Y-Ph OIL FLOW LOW COOLER-F

FUNCTIONS

76F

GT-1 Y-Ph HV WTI ALARM 11

GT-1 Y-Ph LV WTI ALARM 12

GT-1 Y-Ph HOTSPOT WDG. TEMP. ALARM THROUGH FOTS 13

GT-1 Y-Ph OTI ALARM 14

GT-1 Y-Ph BUCHHOLZ ALARM 15

SPARE 16

GT-1 B-Ph NORMAL COOLER FAIL GT-1 B-Ph STANDBY COOLER FAIL GT-1 B-Ph COOLER CONTROL SUPPLY FAIL GT-1 B-Ph OIL FLOW LOW COOLER-A GT-1 B-Ph OIL FLOW LOW COOLER-B

INPUTS TO RTU DIGITAL CARD - DI5

INPUT

GT-1 B-Ph OIL FLOW LOW COOLER-C 1 2 3 4 5 6 7 8 9

PAGE

GT-1 B-Ph OIL FLOW LOW COOLER-D GT-1 B-Ph OIL FLOW LOW COOLER-E

GT-1 B-Ph LOW OIL LEVEL ALARM 10

GT-1 B-Ph OIL FLOW LOW COOLER-F

FUNCTIONS

76G GT-1 B-Ph HV WTI ALARM 11 GT-1 B-Ph LV WTI ALARM 12

GT-1 B-Ph HOTSPOT WDG. TEMP. ALARM THROUGH FOTS 13 GT-1 B-Ph OTI ALARM 14 GT-1 B-Ph BUCHHOLZ ALARM 15 SPARE 16

GT-1 R-Ph THERMAL OVERLOAD RELAY TRIP GT-1 R-Ph COOLER DIRECT ON

GT-1 R-Ph COOLER COOLER ON THRO. WTI/FOTS/ GT-1 R-Ph COOLER FAIL

GT-1 R-Ph DRIVE MOTOR AUTO TRIP/TAP CHANGE DELAYED

INPUTS TO RTU DIGITAL CARD - DI6

INPUT

COMMON KIOSK COOLER SUPPLY-A FAIL 1 2 3 4 5 6 7 8 9

PAGE

COMMON KIOSK COOLER SUPPLY-B FAIL COMMON KIOSK 10

FUNCTIONS

76H 11 12 13 14 15 SPARE 16

GEN.FAS HV CB ON/FIELD CB ON/GCB ON

COOLER POWER SUPPLY AUTO CHANGEOVER FAIL GT-1 Y-Ph THERMAL OVERLOAD RELAY TRIP GT-1 Y-Ph COOLER DIRECT ON

GT-1 Y-Ph COOLER COOLER ON THRO. WTI/FOTS/ GT-1 Y-Ph COOLER FAIL

GT-1 Y-Ph DRIVE MOTOR AUTO TRIP/TAP CHANGE DELAYED GEN.FAS HV CB ON/FIELD CB ON/GCB ON

COMMON KIOSK OUT OF STEP IN 3-1 PHASE TAP POSITION COMMON KIOSK FOTS FAULTY

(36)

INPUTS TO RTU DIGITAL CARD - DI7

INPUT

1 2 3 4 5 6 7 8 9

PAGE

10

FUNCTIONS

76J 11 12 13 14 15 16

GT-1 R-Ph HYDRAN SYSTEM FAIL ALARM SPARE

SPARE

GT-1 Y-Ph HYDRAN SYSTEM FAIL ALARM SPARE

INPUTS TO RTU DIGITAL CARD - DI8

INPUT

GT-1 R-Ph TAP CHANGE SUPPLY FAIL 1 2 3 4 5 6 7 8 9

PAGE

GT-1 Y-Ph TAP CHANGE SUPPLY FAIL GT-1 B-Ph TAP CHANGE SUPPLY FAIL

SPARE 10

GT-1 B-Ph HYDRAN SYSTEM FAIL ALARM

FUNCTIONS

76K SPARE 11 GCB TC-1 UNHEALTHY 12 GCB TC-2 UNHEALTHY 13 GMP DC SUPPLY UNHEALTHY 14 GRP DC-2 SUPPLY UNHEALTHY 15 SPARE 16

GEN. GROUP-1 CLASS-A1 TRIP RELAY UNHEALTHY GEN. GROUP-1 CLASS-A2 TRIP RELAY UNHEALTHY GEN. GROUP-1 CLASS-A2 TRIP RELAY UNHEALTHY GEN. GROUP-1 CLASS-A2 TRIP RELAY UNHEALTHY GEN. GROUP-1 CLASS-B TRIP RELAY UNHEALTHY

INPUTS TO RTU DIGITAL CARD - DI9

INPUT

GEN. GROUP-1 CLASS-C TRIP RELAY UNHEALTHY 1 2 3 4 5 6 7 8 9

PAGE

GEN. GROUP-1 CLASS-C TRIP RELAY UNHEALTHY SPARE 10

FUNCTIONS

76L 11 12 13 14 15 SPARE 16

INPUTS TO RTU DIGITAL CARD - DI10

INPUT

1 2 3 4 5 6 7 8 9

PAGE

10

FUNCTIONS

76M 11 12 13 14 15 16

FOR GT-1 R-Ph COOLER LOGIC - K42 FOR GT-1 R-Ph COOLER LOGIC - K1 FOR GT-1 R-Ph COOLER LOGIC - K2 FOR GT-1 R-Ph COOLER LOGIC - K3 FOR GT-1 R-Ph COOLER LOGIC - K4

INPUTS TO RTU DIGITAL CARD - DI11

INPUT

FOR GT-1 R-Ph COOLER LOGIC - K5 1 2 3 4 5 6 7 8 9

PAGE

FOR GT-1 R-Ph COOLER LOGIC - K6

10

FUNCTIONS

76N 11 12 13 14 15 16

INPUTS TO RTU DIGITAL CARD - DI12

INPUT

1 2 3 4 5 6 7 8 9

PAGE

10

FUNCTIONS

76P 11 12 13 14 15 SPARE 16 VT-1 WDG-1 UNHEALTHY VT-2 WDG-1 UNHEALTHY VT-3 WDG-1 UNHEALTHY VT-3 WDG-2 UNHEALTHY SPARE SPARE GT-1 B-Ph THERMAL OVERLOAD RELAY TRIP

GT-1 B-Ph COOLER DIRECT ON

GT-1 B-Ph COOLER COOLER ON THRO. WTI/FOTS/ GT-1 B-Ph COOLER FAIL

GT-1 B-Ph DRIVE MOTOR AUTO TRIP/TAP CHANGE DELAYED GEN.FAS HV CB ON/FIELD CB ON/GCB ON

SPARE SPARE

GRP DC-1 SUPPLY MCB UNHEALTHY UT-10A 415V AC SUPPLY-1 FAIL UT-10A 415V AC SUPPLY-2 FAIL

ST-1 415V AC SUPPLY-1 FAIL ST-1 415V AC SUPPLY-2 FAIL UT-10B 415V AC SUPPLY-1 FAIL UT-10B 415V AC SUPPLY-2 FAIL

SPARE SPARE

GEN. GROUP-2 CLASS-A1 TRIP RELAY UNHEALTHY GEN. GROUP-2 CLASS-A2 TRIP RELAY UNHEALTHY GEN. GROUP-2 CLASS-A2 TRIP RELAY UNHEALTHY GEN. GROUP-2 CLASS-A2 TRIP RELAY UNHEALTHY GEN. GROUP-2 CLASS-B TRIP RELAY UNHEALTHY GEN. GROUP-2 CLASS-C TRIP RELAY UNHEALTHY GEN. GROUP-2 CLASS-C TRIP RELAY UNHEALTHY

ST-1 BANK-1 FANS ON ST-1 BANK-2 FANS ON ST-1 BANK-1 PUMPS ON ST-1 BANK-2 PUMPS ON ST-1 415V AC SUPPLY-1 ON ST-1 415V AC SUPPLY-2 ON ST-1 FAN CONTROL ON - MANUAL ST-1 FAN CONTROL ON - AUTO

ST-1 PUMPS CONTROL ON -AUTO ST-1 PUMPS CONTROL ON -MANUAL

ST-1 BANK-1 FAN FAIL ST-1 BANK-2 FAN FAIL ST-1 BANK-1 PUMP FAIL ST-1 BANK-2 PUMP FAIL

ST-1 COOLER POWER SUPPLY AUTO CHANGEOVER FAIL ST-1 CONTROL SUPPLY FAIL

SPARE

FOR GT-1 Y-Ph COOLER LOGIC - K42 FOR GT-1 Y-Ph COOLER LOGIC - K1 FOR GT-1 Y-Ph COOLER LOGIC - K2 FOR GT-1 Y-Ph COOLER LOGIC - K3 FOR GT-1 Y-Ph COOLER LOGIC - K4 FOR GT-1 Y-Ph COOLER LOGIC - K5 FOR GT-1 Y-Ph COOLER LOGIC - K6 SPARE

FOR GT-1 B-Ph COOLER LOGIC - K42 FOR GT-1 B-Ph COOLER LOGIC - K1 FOR GT-1 B-Ph COOLER LOGIC - K2 FOR GT-1 B-Ph COOLER LOGIC - K3 FOR GT-1 B-Ph COOLER LOGIC - K4 FOR GT-1 B-Ph COOLER LOGIC - K5 FOR GT-1 B-Ph COOLER LOGIC - K6 SPARE

(37)

2 5 0 0 A 2 5 0 0 A 2 5 0 0 A 2500A BUS-1 BPT2 2500A BUS-2 2500A P2 CORE-4 CORE-3 CORE-2 CORE-1 P1 2500A 2500A 400 KV, 3PH, 2000A, 40KA, FOR 1 SEC

C O R E -1 C O R E -2 C O R E -3 C O R E -4 P1 P2 GENERATOR TRANSFORMER-1 310MVA,420KV / 26kV BPT1 P1 P2 GENERATOR # 1 P2 864MW, 960MVA, 26kV 0.9 PF, 3000RPM, ~ G P2 P1 P1 CORE-N2 CORE-N3 CORE-N4 CORE-L3 CORE-L2 CORE-L1 SA 30kV,20kA UNIT TRF-10A Dyn11yn11, Z(HV)-Z(LV1)/Z(HV)-Z(LV2)=10% Z(LV1)-Z(LV2)=20% OFF CIRCUIT 63/31.5/31.5 MVA, ONAN/ONAF, 26/11.5/11.5kV P2 P1 CORE-4 CORE-3 CORE-2 CORE-1 P1 P2 CORE-1 UT10A CORE-2 UT10A CORE-3 UT10A P1 P2 NGT 26kV/240V √3 √3 CORE-N1 11kV, 2000A, 40kA, 1Sec

P2 P1 CORE-4 CORE-3 CORE-2 CORE-1 UNIT-10A, SWGR-A

11kV, 2000A, 40kA, 1Sec UNIT-10A, SWGR-B TAPS IN THE RANGE OF ± IN STEPS OF 2.5%

UNIT TRF-10B Dyn11yn11, Z(HV)-Z(LV1)/Z(HV)-Z(LV2)=10% Z(LV1)-Z(LV2)=20% OFF CIRCUIT 63/31.5/31.5 MVA, ONAN/ONAF, 26/11.5/11.5kV P2 P1 CORE-4 CORE-3 CORE-2 CORE-1 P1 P2 CORE-1 UT10B CORE-2 UT10B CORE-3 UT10B

11kV, 2000A, 40kA, 1Sec

P2 P1 CORE-4 CORE-3 CORE-2 CORE-1 UNIT-10B, SWGR-A

11kV, 2000A, 40kA, 1Sec UNIT-10B, SWGR-B

TAPS IN THE RANGE OF ± IN STEPS OF 2.5% VT-3

VT-2 VT-1

98.94% EFFICIENCY

50Hz, 400kVA FOR 10 Sec.

STATION TRF-1 Dyn11yn11, Z(HV)-Z(LV1)/Z(HV)-Z(LV2)=10% Z(LV1)-Z(LV2)=20% OFF CIRCUIT 63/31.5/31.5 MVA, ONAN/ONAF, 26/11.5/11.5kV P2 P1 CORE-4 CORE-3 CORE-2 CORE-1 P1 P2 CORE-1 ST1 CORE-2 ST1 CORE-3 ST1

11kV, 2000A, 40kA, 1Sec

P2 P1 CORE-4 CORE-3 CORE-2 CORE-1 STATION, SWGR-A

11kV, 2000A, 40kA, 1Sec STATION, SWGR-B

TAPS IN THE RANGE OF ± IN STEPS OF 2.5% P1 P2 P1 P2 P2 P1 P1 P2 P2 P1 P1 P2 STATIC EXCITATION GCB EXCITATION TRAFO. (TOSHIBA)

(38)

G T G T P 2 P 1 O H L IN E

3

6

0 kV

8 7 6 4 T O 4 0 0 k V S W IT C H Y A R D

2

0 kA

C T (S W IT C H Y A R D ) F R O M 4 0 0 K V B U S /M ID D L E C B W T I R L D C S G C B E N C L O S U R E P 1 3 3 C O R E -L 3 3 G E N E R A T O R # 1 P 2 8 6 4 M W , 9 6 0 M V A , 2 6 k V , 5 0 H z , 0 .9 P F 3 0 0 0 R P M , 9 8 .9 4 % E F F IC IE N C Y ~ G G R -2 P P₂ 1 5 0 H z , 4 0 0 k V A F O R 1 0 S e c . N G T 2 6 k V /2 4 0 V W D G -2 : C L .3 P , 3 0 V A W D G -1 : C L .0 .2 , 3 0 V A W D G -2 : C L . 0 .2 , 3 0 V A W D G -1 : C L . 0 .2 /3 P , 3 0 V A W D G -2 : C L . 0 .2 , 3 0 V A W D G -1 : C L . 0 .2 /3 P , 3 0 V A 6 4 F 2 G R -1 V K ≥ 4 3 0 R c t + 8 0 0 V 2 5 0 0 0 /5 A , C L . P X 6 4 F 2 G R -2 G R -1 G T 99 G T P R O T E C T IO N N U M E R IC A L R E L A Y G E N E R A T O R T R A N S F O R M E R -1 (3 x 1 P H ) (3 x 1 P H )E A C H 3 1 0 M V A , O N A N /O N A F /O F A F , 4 2 0 / 2 6 K V , Y n d 1 , Z = 1 6 % √ 3 √ 3 T A P C H A N G E + 5 % T O -1 5 % IN S T E P S O F 1 % T O U N IT T R A N S F O R M E R # 1 0 A (R E F E R S H E E T 1 6 ) T O U N IT T R A N S F O R M E R # 1 0 B (R E F E R S H E E T 1 6 ) V M W P F P E R F O R M A N C E T E S T IN G E X T E R N A L M E T E R S F O R G 6 0 G 1 1 S S 2 5 C S W F F W W 2 5 A G C P 5 9 N G R P 2 5 C S W F F W W 2 5 A G C P 6 0 G 1 3 A V R C H -A D E H C 6 0 G 1 2 T U R B IN E P N L 6 0 G 2 2 Im ≤ 1 5 m A A T V k /2 C O R E -L 2 V K ≥ 4 3 0 R c t + 8 0 0 V 2 5 0 0 0 /5 A , C L . P X Im ≤ 1 5 m A A T V k /2 C O R E -L 1 V K ≥ 4 3 0 R c t + 8 0 0 V 2 5 0 0 0 /5 A , C L . P X Im ≤ 1 5 m A A T V k /2 D E H C T U R B IN E P A N E L C O R E -N 4 7 0 V A , I S F≤ 1 0 2 5 0 0 0 /5 A , C L . 0 .2 S C O R E -N 3 7 0 V A , I S F≤ 1 0 2 5 0 0 0 /5 A , C L . 0 .2 S A M V A R M W M W H M V A H M V A R H V F P F G M P T O D C S C O R E -N 2 2 5 0 0 0 /5 A , C L . P X V K ≥ 4 3 0 R c t + 8 0 0 V Im ≤ 1 5 m A A T V k /2 1 1 0 V 2 6 k V 6 4 G 1 6 4 G 3 8 7 G 2 7 8 G 2 4 6 G 2 2 1 G 2 3 2 G 2 4 0 G 2 5 0 G S 2 6 1 B 2 3 7 G 2 5 0 L B B 5 9 G 2 8 1 G 2 9 9 G 2 5 9 G 2 6 4 F 2 G E N . P R O T E C T IO N N U M E R IC A L R E L A Y G R -2 C O R E -N 1 2 5 0 0 0 /5 A , C L . P X V K ≥ 4 3 0 R c t + 8 0 0 V Im ≤ 1 5 m A A T V k /2 6 4 G 1 6 4 G 2 8 7 G 1 7 8 G 1 4 6 G 1 2 1 G 1 3 2 G 1 4 0 G 1 5 0 G S 1 6 1 B 1 3 7 G 1 5 0 L B B 5 9 G 1 8 1 G 1 9 9 G 1 5 9 G 1 6 4 F 2 G E N . P R O T E C T IO N N U M E R IC A L R E L A Y G R -1 N G R 2 4 0 V , 0 .0 5 4 5 4 8Ω , 1 0 5 k W F O R 1 0 S e c. 2 0 H z S IG N A L G E N E --R A T O R 8 7 O A S R P T O S T A T IO N T R A N S F O R M E R # 1 (R E F E R S H E E T 1 6 ) V T -1 8 7 O H S R P _W T I V K ≥ 8 4 R c t + 2 5 0 V 1 5 0 0 /1 A , C L . P S Im ≤ 3 0 m A A T V k /2 V K ≥ 4 3 0 R c t + 8 0 0 V 1 4 0 0 0 /5 A , C L . P S Im ≤ 3 0 m A A T V k /2 5 1 N G T G R P V K ≥ 8 4 R c t + 2 5 0 V 1 5 0 0 /1 A , C L . P S Im ≤ 3 0 m A A T V k /2 1 5 V A 1 5 0 0 /1 A , C L . 5 P 2 0 G R P 1 1 0 V 2 6 k V √ 3 V T -2 1 1 0 V 2 6 k V V T -3 T U R B IN E P N L P 1 P 2 P 2 P 1 √ 3 √ 3 √ 3 √ 3 √ 3 1 1 0 V 3 1 1 0 V √ 3 1 1 0 V √ 3 S T A T IC E X C IT A T IO N C U B IC L E 6 4 F 1 A V R (T O S H IB A ) G G R P G R P 6 0 G 2 1 G R P 6 0 G 2 3 G R P G R P M W M W A P E R F O R M A N C E T E S T IN G E X T E R N A L M E T E R S F O R M W -1 M W -2 M W -3 T O D C S T O D C S T O D C S G M P A V R C H -B D E H C A V R