technical diary of stage-2 (unit-3&4) … heat input per plan area of (kcal/m /hr) 280000000...

2X110 MW, UNIT-3&4, STAGE –II, PANIPAT THERMAL POWER STATION, PANIPAT

1

TECHNICAL

DIARY

OF

STAGE-2

(UNIT-3&4)

(PTPS,Panipat)


2

INDEX

Contents Page no.

1. Boiler and its auxiliaries 4-17

2 Ash Handling System 18-19

3 DM Plant 20-24

4 Fuel Oil System 25-26

5 Turbine & its Auxillaries 27-41

6 Compress Air System 42-43

7. C & I System 44-50

8 Generator & Electrical System 51-72

9 Fire Protection System

10 Fire Tender System


3

BOILER

AND

ITS AUXILIARIES


4

Max Boiler

53.858

MTR

Column Height

Total No of ----

Columns

Total No of ----.

Ceiling Girder

Max Wt of -----

Ceiling

Girder (L-Row)

Total Wt of -----

Boiler Structure

Wt of Drum -----

Total Wt of -----

Pressure Parts

Other Non

Pressure Parts -----

(APH,

Insulation &

Ducting

Furnace 10.135

Dimension MTR ,

(W*D*H) 7.696

MTR ,

29.487

MTR

- -

5

Type : Tilting Tangential Burner, Balanced Draft, Fusion welded furnace, Natural Circulation, Dry Bottom Ash with direct fired pulveriser coal from coal mills and with steam reheating arrangement

Manufacturer: BHEL. Designed Fuel: Indian Bituminous Coal

1 STEAM GENERATOR WITH 100% 100%

AUXILIARIES BMCR TMCR

1.1

Steam flow at final super heater

(TPH) 375

outlet

Maximum continuous generation at

1.2 VWO conditions with offered steam (TPH)

110 (VWO)

parameters at super heater

outlet

Auxiliary steam flow for Soot Steam for soot blowing is from Final

1.4

blowing, Oil Burner atomization etc.

super heater outlet and steam for oil burner

atomization is from Aux. Steam header.

During normal operation, no steam from

Aux. Steam header is required for soot

blowing and oil burner atomization

Steam for auxiliary steam tap off

Kg/cm2/deg

a)

1) Final Super heater Outlet

138.0/540

cent

Pr./Temp.

Kg/cm2/deg

2)Platen Super Heater Outlet

138.0/504

cent

Pr./Temp

b) Aux.

Steam For oil

burner Kg/cm2/De 11/24

0

Atomization.

g cent

1.5

Thermal efficiency of the

steam (%) 87.5

generating units

1.6 Steam pressure at final super kg/cm2 (a) 138.0

6

heater

outlet

1.7

Steam temperature at final super (°C)

540.0

heater outlet

1.8 Reheater outlet steam flow

TPH 313.0

1.9 Steam temperature at Reheater inlet (°C)

369.0

header

1.10 Steam temperature at Reheater (°C)

540.0

outlet header

1.11 Steam pressure at Reheater inlet kg/cm2 (a )

34.50

header

1.12 Steam pressure at Reheater outlet kg/cm2 (a ) 32.70

header

1.13 a) Pressure drop across Reheater (kg/cm2)

1.8

b) Pressure drop in economizer hot reheat lines (kg/cm2) 1.3

1.15 a) Feed water temperature at (°C) 240.0

Economizer inlet

b) Feed water temp. Of economizer (oC) 288.0

outlet

1.16 Boiler drum:

a) Elevation M

45,500

d) Diameter / thickness mm ID = 1524, Th. =

125

7

h) Design Temperature oC

340

Water capacity at MCR between m3

i) normal and lowest water level 8.0

1.17 Number of Attemperators:

a) Superheated steam 2

b) Reheat steam 2

1.18 Flue Gas Temperature º C

a) Platen Superheaters inlet/ outlet (oC)

1128/1048

b) Final superheaters inlet/ outlet (oC)

824/761

c) Reheater finish inlet / outlet (oC)

1048/890

d) SH low temperature inlet/ outlet (oC)

761/507

f) Economizer inlet / outlet (oC)

507/358

g) Air Heater inlet / outlet (oC)

358/144

Temperature difference across the oC

e) drum metal thickness. NA

f) Maximum operating pressure Kg /cm2 (g) 148.8

g) Design pressure Kg /cm2 (g)

158.2

8

h) ESP inlet/outlet (oC)

130/125

i) ID fan inlet/ outlet (oC)

125/124

j) Stack Inlet (oC)

100% TMCR:121(performance coal)/ 120

(worst coal)

Pressure Drop: mmWC

80

100

80%B

100

1.19

%BMC

%TMCR

%TMCR

MCR

R

Primary air side total pressure drop

a) through the system mmWC NA 736

Secondary air side total pressure

b) drop mmWC NA 434

c) Flue gas pressure drop through the

mmWC

NA 328

system

1.21 Steam Purity (ppm)

Total Dissolved solids

Will not exceed .02 ppm when the total

a) dissolved solid is not greater than 20 ppm in

drum.

b) Silica PPB

0.02ppm (max.)

b) Sodium

PPB

0.01 ppm (max.)

1.23 Cooling Water Requirement for Boilers & Auxiliaries

a) Quantity M3/hr

184.40

1.24 Instrument air & Service air Requirement

Quantity (for boiler, turbine & NM3/min/

a) auxiliaries) for one unit Unit 20

9

1) Continuous

Quantity (for boiler, turbine & NM3/min/ auxiliaries) for one unit Unit 15 2) Intermittent

Pressure

Kg/cm2(g

b) ) 4 to 6

1.25 Heat liberated by fuel:

a) Max. Net heat input per plan area of (kcal/m2/hr) 280000000 KCAL/hr surface

1.26

i. Furnace exit gas Temperature (°C)

1154 (Flue Gas Temp. leaving furnance)

ii. Boiler Exit gas temperature

AH Outlet (Uncorrected) (°C) ----

AH Outlet (Corrected)

°

( C) 144

1.27 Weight of fuel fired:

1.29 Type of firing Corner Tangential

1.30

Furnace dimensions (Width x Depth

(Meters) 10.135x7.696x 29.487 MTR

x Height)

1.31 Heat Transfer areas: (Sq. M)

Superheaters

1)Super Heater Low Temp 2690

b) 2)Super Heater Panel m2

3)Super Heater Platen 380

4)Super Heater Finish 570

Reheater (Type Pendent)

10

1)Reheater wall m2

1060

c)

d) Economizers(Type continous finned tube) m2

3233

e) Air heater(Roatry)

m2 16800

f) Steam coil air heater m2 NA

g) Max. air leakage through air heater %

12

1.32 Soot-blowers:

1)10, Short Rotary, Single nozzle, RW5E, Retractable type, For furnace chamber at Unit-3 only.

a) Quantity, Type, Location

1) Short retractable soot blower P-30 Kg/Cm2

T= 300 deg cent

b) Steam Conditions (Pr. & Temp

quality)

< 3 min

c) Time required for one cycle of

operation

Cleaning Medium

Steam

a) Pressure : Kg/cm2

d) 10.5

b) Temperature : deg.

C

300

c) Source of cleaning medium

STEAM

To be decided based on control

11

logic of the

e) Number of groups of soot blowers system.

To be decided based on control logic of the

f) Total operating time per group min system.

Blowers

Rehea

Econ Super

Furnac

e

Omis

ter

heater

Er

Type & Qty. SRSB RW5E

g)

AHLW 4

SRSB

10 (Unit-3)

c) Operating pressure Kg/cm2 AHLW 10.5

SRSB 10.5

h) Materials of Construction

1.34 HP & LP CHEMICAL DOSING

Phosphate Hydrazine

Ammo

nia

SYSTEM

a) Quantity Set 3 3 NA

b) Type Simplex,

Plunger Simplex, Plunger

NA

c) Medium to be handled Sodium

phosphate Hydrazine

NA

d) Capacity Lit/min 65 20 NA

e) Discharge pressure Kg/cm2 175 25 NA

f) Stroke Adjustment Range 0~100 0~100 NA

g) Stroke adjustment yes yes

12

NA

i) Liquid end 316SS PTFE NA

j) Plunger 316SS 316SS NA

k) Drive end 316 PVDF NA

l) End Connection NPT NPT NA

1.35 Pulverizers:

Quantity, type, make 12 nos. , XRP-623, BHEL a)

b) Speed

RPM 62

c) Design capacity TPH 16.5

d) Motor rating KW 200

e) Motor speed RPM 986

Number of operating mills and f) standby mills

i) Working 5

ii) Standby 1

1.36 Coal Feeders:

a) Type, Quantity, make Pressurised ,volumetric rotary feeders with PIV Variator, 12 nos., flender make ,supplied by BHEL

Model

b) Feed Rate T / hr 20

d) Speed regulating range RPM Piv

Type of Control

13

e) 1)Microprocessor PIV 2)Frequency conversion

1.37 Burners Coal

Fuel oil Light oil

Igniters

HFO

Quantity, type, make 24 12 steam atomization

NIL 12 High Energy Arc Type

b) Capacity each (10 kg/hr) 7.5% MCR --

c) Turn down Ratio NA

1.38 Stacks

c) No. Of stacks provided m 1 with twin flue

1.39 Air Preheater( REGERATIVE AIR PREHEATER TRISECTOR type)

1.39.1 Type TRISECTOR TYPE

1.39.2 Number 2

1.39.3 Mounting (Vertical / Horizontal) Vertical

1.39.4 Maximum Handling Capacity 16800 M2

Flue gas temperature at heaters

1.39.5 outlet

Corrected

Deg. C

144

Uncorrected

1.39.6 Max. Air leakage through air heater %

12

1.39.8 Pressure drop at BMCR,

a) Air side (primary) 736 MMWCL

14

b) Air side(secondary)

434 MMWCL

Emergency drive for Air heater

Air motor

1.39.9 Primary Air temperature Deg. C AMBIENT/315

1.39.10 Secondary Air temperature Deg. C AMBIENT/307

1.39.11 Flue Gas temperature Deg. C 358/144

1.42 Water wall details

Total heating surface area Sq.M

42.1 Front Wall Panels NA

No. of tubes (WW tubes)

REAR & FRONT = 133 EACH SIDE LHS & RHS = 85 EACH SIDE TOTAL = 436

OD mm 63.5

Pitch mm 12

Wall thickness mm 5.6 to 6.3

Tube material SA210-A1/C

Membrane fin thickness mm 6

1.43 ESP

1. 43.1 ESP: One ESP for one boiler

a) Type; make 2FAA-7X32-12090-2

b) Collecting electrodes – material, 1.6 mm th.cold rolled M.S. Plate

type

c) Discharge electrodes – material, SPIRAL WITH HOOK SUPPORTS

type

d) Pressure drop across ESP mmwc

15

15

e) Temperature drop across ESP

oC NA

f) Quantity, type, rating of

14

transformer Rectifier units for one 70KV peak/800mA (MEAN)

ESP

g) Particulate emission with worst

mg/Nm3 150

coal firing with all fields in

service

h) Particulate emission with design

mg/Nm3 150

coal firing with all fields in

service

i) Particulate emission with design na

coal firing with one field out of mg/Nm3

service

j) ESP streams per boiler Nos 2

k) Specific collection area m2/m3/sec

164.53

l) Min. gas temp. At ESP inlet 1430C

m) Max. Flue gas velocity m/s 0.91

n) Storage capacity of each hopper M3 8 HRS CAPACITY

plate spacing

p) ESP inlet Flue gas temp.

o Cent 143

q) Guaranteed Efficiency %

99.52

16

1.43.2 Collection efficiency % Design coal Worst coal

a) All fields in service 99.52 NA

b) One field out of service in each NA NA

ESP

e) Flue gas flow m3/s 200.4

1. 43.3 Schedule of Weights:

1. 43.4 ESP NA

a) ESP Dimension m*m*m 2xFAA-7x32-12090-2

b) No. of fields per ESP No./Stream 7

c) Inlet Dust burden g/nm3 31.54

d) ESP design temp o Cent 143

e) Flue Gas treatment time sec 24.68

f) ESP Casing:- mm Carbon Steel

Material of construction

Thickness 6

1.44.1 FD, PA, ID Fan

Sno Description Unit FD Fan PA Fan ID Fan Scanner air fan

1 Make ,Qty, Type

BHEL, 2 nos per boiler, axial, AN 12 e 6

BHEL, 2 Nos per boiler, Radial, single suction NDFV-20b

BHEL, 3 Nos per boiler, radial, double suction, NDZV 28 SIDOR

Centrifugal 2 Nos per boiler,

2 Volumetric Flow m3

/sec 58 at 50 deg 40 at 50 deg 132 at sp gravity 0.833

1200

Rate per fan(Capacity

At design Point)

3 Total Pressure(Fan Mmwc 355 1275 280

200

Total Pressure rise)

5 Motor Rating KW 300 750 600 2

6 Speed Rpm 1450 1480 745 3000

17

7 Motor Type

BHEL Make SQ. Induction

8 Lubrication system Forced Oil Forced Oil Forced Oil NIL

10 No. Stages of Nos. 1 1 1 1 Impeller

11 Regulator Inlet guide vane control

Inlet guide vane control Hydraulic coupling

DAMPER

1.43.2 Details of Lube oil System

Sno. Description Unit PA ID Fan Fans

2 Pressure of lubricating oil Kg/Sq.m 8 max 1.5

4 Oil Temperature Deg.C 85/55 na

5 Capacity of Oil Tank leter 100 950

6 Degree of filtration um na na

7 Area of cooler Sq.M na na

9 Cooling water Pr. Kg/Sq/Cm 0.5 0.5

10 Power Of motor(415V) KW 0.372 8.3

18

3. ASH HANDLING SYSTEM

19

ASH HANDLING SYSTEM

S.N Description NO. provided ash collection Holding O per boiler rate Per boiler capacity

kg/hr(max) (hrs)

1) Furnace bottom ash hopper 01 7000 8

2) Economizer 04 421 Not provided

3) A.H. hoppers 04 421 Not provided

4) Duct hopper 02 260 Not provided

4) ESP. Hoppers 28

26089 8

5) Stack Hopper 01 23 Not provided

PUMPS SPECIFICATION

i) L.P. Ash water pumps

NO. of pumps 3

Location Ash water pump house

Capacity 911 m3/hr

Head 15MMWC

Suction pressure NA

R.P.M 1500 rpm

Motor 55 KW

ii) H.P ASH WATER PUMPS

NO. of pumps 4

Location Ash water pump house

Capacity 680 m3/hr

Head 120 MMWC

Suction pressure NA

R.P.M 1500 rpm

Motor 300 KW

iii) SEAL WATER PUMPS

NO. of pumps 2

Location Ash slurry pump house

Capacity 45 m3/hr

Head 130 MMWC

R.P.M 1500 rpm

Motor 30 KW

iv) ASH SLURRY PUMPS

NO. of pumps 6( 3+3)

Location Ash slurry pump house

Capacity 820 m3/hr

Head 24 MMWC

R.P.M 1000 rpm

Motor 110 KW

21

PRESSURE SAND FILTERS-POTABLE WATER (SFT-1)

No. of units = 3

Design rated Service flow rate = 58 m3/hr

Service cycle = 24hrs

Design velocity as per specification NA

Bed depth

Sand -16/32

Under bed

Free board

Vessel size =Dia-2800mm, HOS-1350mm, Pr.-7.0 Kg/Cm2

PRESSURE SAND FILTERS –DM (SFT-2)

No. of units = 2

Gross output of PSF NA

Design velocity as per specification NA

Design flow = 22 m3/hr

Bed depth NA

Sand -16/32 NA

Under bed NA

Free board NA

Vessel size = Dia-2400mm, HOS-1350mm, Pr.-7.0 Kg/Cm2

FILTER AIR BLOWERS (FTB)

Number = two-(Common)

Type = Rotary - ONE

Capacity (SUCTION) = 228 m3/hr

Air velocity required for PSF

Air pressure required (DISCHARGE PRESSURE) = 0.25 Kg/Cm2

Capacity

Material of construction = CI

DEGASSER AIR BLOWERS (DCB)

Number = Two

Type = centrifugal

Air velocity required for DGT NA

Air pressure required = 100 mm WC

Capacity = 1260m3/ hr

Material of construction = MS

DEGASSED WATER PUMP (DWP)

Number = Four

Type = Horizontal centrifugal

Capacity of pump = 35m3/hr

Head provided = 50 M

Material of construction = SS316

DEGASSED / DECARBONATED WATER STORAGE TANK (CWS)

Quantity = two

Capacity NA

Type = Horizontal Cylindrical

Size of unit = 3.0mx4.0m HOS/LOS

22

Material of construction = RCC

MIXED BED AIR BLOWERS (MBB)

Number = two

Type = Rotary - One

Air velocity required for MB NA

Air pressure required (DISCHARGE) 0.5 Kg / cm2

Capacity of blower = 150 m3/hr

Material of construction = CI

DEMINERALISED WATER STORAGE TANK (DWS-1)

Quantity = TWO

Capacity = 1000 m3as per specification

Type = Vertical cylindrical

Diameter selected = 8.0m

Size of unit Dia= 8.0m, HOS/LOS=10.5m

BULK ACID STORAGE TANKS (HLS)

Quantity = two

Capacity = 30 MT


Size of unit = 2.0m DIA x3.5m HOS/LOS

MOC Mild steel rubber line-MSRL

BULK ALKALI STORAGE TANK (CSS)

Quantity = two

Capacity = 10m3 as per specification


Size of unit = 2.0m DIA x3.5m HOS/LOS

MOC Mild steel rubber line-MSRL

DM REGENERATION PUMPS / DM WATER TRANSFER PUMP (DWP)

Number = two


Capacity = 40 m3/hr

Head provided = 28.5 M

Material of construction = C.I.

ACID UNLODING / TRANSFER PUMPS (HLP)

Number = two


Capacity as per specification = 10m3

Head provided as per specification = 15 MLC

Material of construction = pp-Polypropylene

ALKALI UNLODING PUMPS / CAUSTIC SODA TRANSFER PUMP (CSP)

Number = two


Capacity as per specification = 10 m3/hr

Head = 15 MLC

Material of construction = C.I.

23

ACID MEASURING TANK –SAC(HLM-1)

Number = one

Capacity = regeneration volume required for

regeneration one of unit plus 25%margin

100% HCL required NA

Concentration in regeneration tank = 30% to 10%

Volume of 30% concentration acid with 25% Margin = 2.58m3

Size of unit = 1.8.m Dia x1.5m HOS/LOS

ACID MEASURING TANK –MB(HLM-2)

Number = One

Capacity = Regeneration volume required for

regeneration of one unit plus 25%

Margin

100% HCL required = 290 Liters


Volume of tank with 25% margin = 0.255m3

Size of unit = 0.8m Dia x0.9m HOS/LOS

Concentration of alkali in the tank

Volume of 30% concentration solution

Size of unit

ALKALI MEASURING TANK – SBA (CSM-1)

Number = One

Capacity = Regeneration volume required for

regeneration of one unit plus 25%

margin.

100% NaOH required = 664 Lit. as 30%W/V


Volume of 30% concentration solution = 0.708 m3

Size of unit = 1.2mDia x1.0m HOS/LOS

ALKALI MEASURING TANK –MB(CSM-2)

Number = ONE

Capacity = Regeneration volume Required for regeneration of one

unit plus 25% margin

100% NaOH required = 180 Lit. as 30%W/V


Volume of 30% concentration solution = 0.3858 m3

Size of unit = 0.6m Dia x1.0m HOS/LOS

ALKALI MEASURING TANK –NEUTRALISATION (CPS)

Number = one

100% NaOH required = 650 Liters

Concentration of alkali in the tank = 45%

24

Volume of 48% concentration solution NA

Size of unit = 1.0mDia x 1.0 m Ht

NEUTRALISATION PIT (SEF)

Quantity = one

Number of section/Compartments = two

Effective capacity per section required = 492.66 m3

Size of section = 13.8x10.2x3.5 m3

EFFLUENT TRANSFER PUMPS (EWP)

Number = two


Capacity as per specification = 150 m3/hr

Head provided = 25 MLC

Material of construction = SS316

25

FUEL OIL SYSTEM

Description Fuel oil transfer Drain

Service HFO

Nos 2 nos per boiler (4 nos)

Type Multi screw positive displacement

Type of Duty Continuous

Capacity (m3/hr) 220

Make Tushaco

Head (Kg/Cm2) 20

Pump RPM 2900

KW 15

Pump efficiency % __NA

Sealing Mechanical

Bearing NA

FUEL OIL CHARACTERISTICS

Characteristics

Heavy Furnace Oil IS-1593-

Low Sulfur Heavy Stock

1971 Grade HV (LSHS)

Total sulfur content 3.5 – 4 - 4.5% max by Weight 1.0% max

Gross calorific value (kcal/kg) ~11,000 ~ 11,000

Flash point 66ºC min 93ºC min

Water content by vol 1.25% max 1.0% max

Sediment by weight 0.25% max 0.25% max

Asphaltene content by wt 2.5% max 2.5% max

Kinematic viscosity, CSt at 50ºC 370 max 500 max

Ash content by weight 0.1% max 0.1% max

Acidity (inorganic) Nil Nil

26

Pour point 24ºC max 57ºC max

LDO /HFO ANALYSIS:

LDO HFO

Sp.Gr. at 15O Cent .950

GCV Kcal/Kg 10280

Flash Point(O cent min) 66

Pour Point (ºC max.) NA

Sulphur % “T” Max 4.5

Kinematic Velocity in Centistokes@50 OCent 370

Max.

Ash By Weight % .1

Water & Sediment Vol. Max% 1.25

27

2X110MW, UNIT- 3&4 PANIPAT THERMAL POWER STATION, PANIPAT,

Turbine & its Auxillaries

2.1 STEAM TURBINE

I) Make / Type BHEL make, three cylinder, impulse type, condensing turbine with one reheat and eight (8) non regulating extractions

II) Type of governing Hydraulic control system

III) Rated output measured at the terminals of the generator as per CNS 080030

KW 110,000

IV) Economical output (at rated parameters)

KW 95,000

V) Rated speed RPM 3000

VI) Rated steam pressure just before the stop valve

ata 130

VII) Maximum steam pressure just before the stop valve

ata 146 (short period)

VIII) Rated steam temperature before the stop valve

°C 535 (transient condition)

IX) Maximum steam temperature before the stop valve

°C 545

X) Rated pressure of steam before the MP casing

ata 31.63

XI) Maximum pressure of steam before the MP casing

ata 35

XII) Rated temperature of steam before MP casing

°C 535

XIII) Maximum temperature of steam before MP casing

°C 545

XIV) No. of non-regulated extractions

nos. 8

XV) Temperature of cooling water

°C 32

XVI) Maximum temperature of cooling water

°C 36

XVII) At 110 MW- steam flow at inlet (pressure-130 ata, temp. -535 °C, R/H-535 °C, cooling water- 32 °C)

TPH 364.5

XVIII) Safer continuous rating when all the heaters being out (no withdrawal of extraction steam)

MW 90

XIX) Informative heat rate of turbine at economic output

Kcal/KWh 2,135

XX) Informative heat rate of turbine at rated output

Kcal/KWh 2,152.5

2.2 SYSTEM OF STEAM TURBINE

2.2.1 Direction of rotation (when

Clockwise

28

looking from front bearing pedestal to turbine)

2.2.2 4 governing valves+ interceptor valves

2.2.3 Turning gear speed

RPM 62

2.2.4 HP Cylinder One

I) Regulating stages 2 rows Curtis wheel

II) Other impulse stages

8 moving wheels

III) Weight of HP rotor (approx.)

Kg 5,500

2.2.5 MP Cylinder One

I) Impulse stages 12 moving wheels

II) Weight of MP rotor (approx.)

Kg 11,000

2.2.6 LP Cylinder One

I) Other impulse stages

4 moving wheels of double flow design

II) Weight of LP rotor (approx.)

Kg 24,000

2.2.7 CRITICAL SPEED

I) MP and LP and generator rotor

RPM 1900 – 2200

II) HP rotor RPM 2350

2.3 LUBRICARION AND GOVERNING OIL SYSTEM

2.3.1 Quantity of oil for 1st filling

I) For the turbine (approx)

Litres 19,000

II) For oil system of generator (approx.)

Litres 4,400

III) Consumption of make-up for the whole turbo set

Kg/hr 0.38

2.3.2 Turbine Lube oil coolers

Three

I) Fluid circulated Shell side - oil Tube side - water

II) Quantity of cooling water circulated

m³/hr 120

III) Cooling water inlet temperature

°C 36°C (maximum)

IV) Quantity of circulating oil

Litres 18.75 litre/section

V) Cooled oil temperature after cooler

°C 42°C

VI) Oil side pressure drop across the cooler

Kg/cm² 1.93

29

VII) Water side pressure drop across the cooler

Kg/cm² 0.25

2.3.3 Main oil tank One

I) Oil tank capacity Litres 12,500

2.3.4 Collecting tank for oil leakage

One

I) capacity Litres 210

II) Transfer gear pump

Two

III) Capacity (each 100%)

LPM 35

IV) Head ata 2

V) Drive motor rating 1 KW, 415V, 50 cycle

VI) Speed RPM 1400

2.3.5 Main oil pump (shaft driven)

One

I) Quantity discharged

LPM 4,500

II) Delivery Head ata 10 to 12

2.3.6 Starting oil pump (each 100% capacity)

Two

I) Quantity discharged

LPM 2,000

II) Head MWC 138

III) Drive unit motor rating

95 KW, 415V, 50 cycle

IV) Speed RPM 1480

2.3.7 Emergency oil pump (each 100% capacity)

Two (one AC & one DC Motor

I) Discharge quantity LPM 800

II) Discharge head MWC 23

III) AC Motor rating 11 KW, 415V, 50 cycle, 1450 rpm

IV) DC motor 11KW, 220V DC

2.3.8 Jacking oil pumps Seven (One common drive unit)

I) Quantity delivered m³/hr 10.5

II) Head ata 50

III) Drive unit rating 30KW, 415V, 50 cycle

30

IV) Speed RPM 1465

V) Provision for one DC motor on same shaft has been made for short run

DC rectifier has not commissioned

2.3.9 Vapour extractor Two (One standby)

I) Drive motor rating 0.8 KW, 415V, 50cycle

2.3.10 Turning gear

I) Turning gear speed

RPM 62

II) Drive motor rating 30 KW, 415V, 50 cycle

2.4 TWO WAY SURFACE CONDENSER (Spring supported)

2.4.1 Quantity Two

I) Each of condenser cooling area (Steam side)

m² 3,380

II) Quantity of cooling water (for both the condensers)

m³/hr 15,400 m³/hr (at 32 °C)

III) Steam flow TPH 259

IV) Resistance on water side of each condenser

5 meter, wel

V) Rated temperature of cooling water

°C 32

VI) CW outlet temperature

°C 41.26

VII) Condensate outlet temperature

°C 45.45

VIII) Each condenser passes

Two

2.4.2 Condenser tubes

I) Outside diameter mm 22

II) Thickness of wall mm 1

I) No. of tubes in each condenser

nos. 6,500 (including 600 nos. in air cooling zone)

II) Material AL brass

V) Length of intermediate extension piece

M 6.3

2.4.3 Starting Ejector One (Single stage steam jet starting ejector)

I) Operating steam pressure

Kg/cm² 7 Kg/cm² at 300 °C

II) Steam requirement

Kg/hr 2,400

2.4.4 Main steam jet air ejector

One (two stage steam jet air ejector of "Duplex type" each with its own condenser)

I) Minimum pressure of working steam

ata 7

31

II) Operating steam condition

Kg/cm² 7 - 11 Kg/cm² at 300 °C

III) Temperature of steam

°C 300

IV) Steam consumption

Kg/hr 1,600

2.5 LOW PRESSURE HEATERS

2.5.1 Two low pressure heaters of the 1st stage heating are of vertical design

LPH - I

I) Each of area m² 80 m²; on steam side

II) No. of U brass tubes

242

III) Size of tubes mm 15 / 13 (OD / ID)

IV) Operating pressure

Kg/cm² 0.188

V) Pressure of steam at turbine extraction point

Kg/cm² 0.198

VI) Temperature of feed water at heater inlet

°C 46.14

VII) Temperature of feed water at heater outlet

°C 56.17

VIII) Quantity of steam flowing through heater

Kg/hr 4,751

IX) Feed water flow through the heater

Kg/hr 273,446

X) Condensate outlet temp

°C 58.17

2.5.2 Two low pressure heaters of the 2nd stage heating are of vertical design

LPH - II

I) Each of area m² 80 m²; on steam side

II) No. of U brass tubes

242

III) Size of tubes mm 15 / 13 (OD / ID)

IV) Condensate outlet temp

°C 75.42

V) Operating pressure

Kg/cm² 0.407

VI) Pressure of steam at turbine extraction point

Kg/cm² 0.428

VII) Temperature of feed water at heater inlet

°C 56.17

32

VIII) Temperature of feed water at heater outlet

°C 72.82

IX) Quantity of steam flowing through heater

Kg/hr 8,036

X) Feed water flow through the heater

Kg/hr 273,446

2.5.3 3rd, 4th & 5th stage Heating (Vertical Design)

LPH - 3

LPH - 4 LPH - 5

I) Area on steam side of the tubes

m² 250 250 250

II) Resistance on water side at a flow of 259 T/hr

MWC 4 4 4

III) No. of tubes nos. 710 710 710

IV) Size of tubes (OD / ID)

mm 15 / 13 15 / 13 15 / 13

V) Steam inlet temperature

°C 145.0 219.0 310.88

VI) Steam outlet temperature

°C 95.66 122.7 152.0

VII) Operating pressure

Kg/cm² 0.959 2.24 5.18

VIII) Pressure of steam at turbine extraction point

Kg/cm² 1.032 2.41 5.69

IX) Temperature of feed water at heater inlet

°C 80.2 94.76 121.6

X) Temperature of feed water at heater outlet

°C 94.76 121.6 150.9

XI) Quantity of steam flowing through heater

Kg/hr 6644 13797 15095

XII) Feed water flow through the heater

Kg/hr 308982 308982 308982

XIII) Safety valve set pressure

atg 6 6 6

2.6 CHIMNEY STEAM CONDENSER (Vertical Design)

2.6.1 Quantity One

I) Area on steam side

m² 30

II) Quantity of steam for condensing

Kg/hr 900 kg/hr (maximum) 721.6 kg/hr (normal)

III) Temperature of steam, IN / OUT

°C 217 / 85.5

IV) No. of U tubes nos. 121

V) Size of tubes mm 15 / 13 (OD / ID)

33

VI) Resistance on water side at a flow of 250 T/hr

MWC 5

VII) Operating pressure on steam side

ata 0.95

VIII) Operating pressure on water side

atg 20

2.6.2 Chimney steam exhaust fan (each 100%)

Two

I) Output m³/sec 0.33

II) Temperature of mixture

°C 150 (maximum)

III) Pressure of suction

MWC 0.250

IV) Fan drive motor rating

10 HP, 415V, 50 cycle, 3 phase

2.7 GLAND STEAM CONDENSER (Vertical Design)

I) Quantity One

II) Area m² 80

III) Quantity of steam for condensing

Kg/hr 3,800 kg/hr (maximum)

IV) No. of U tubes nos. 256

V) Size of tubes mm 15 / 13 (OD / ID)

VI) Test pressure on water side

atg 60

VII) Operating pressure on steam side

Kg/cm² 1.02 abs.

VIII) Inlet temperature of feed water

°C 73.57

IX) Outlet temperature of feed water

°C 78.57

X) Inlet steam temperature

°C 391.0

XI) Outlet steam temperature

°C 81.0

2.8 Condensate expander at the pressure level of 3rd stage heating

I) Quantity One

II) Safety valve setting pressure

atg 6

III) Test pressure with water (shell side)

atg 9

2.9 HIGH PRESSURE HEATERS (vertical design)

I) 7th & 8th stage Heating (Vertical Design)

HPH - I HPH - II

34

II) Area on steam side of tubes

m² 320 320

III) No. of spiral steel nos. 240 339

IV) Size of tubes mm 25 / 15 25 / 15

2.7 Resistance on water side at flow of 320 T/hr in spiral tubes

MWC 17 17

I) Design pressure on steam side

atg 20 40

II) Design pressure on water side

atg 240 240

III) operating pressure on steam

Kg/cm² 17.24 32.12

IV) Pressure of steam at turbine extraction point

Kg/cm² 19.12 35.85

V) De-superheating section surface area

m² 55 55

VI) Condensing section surface area

m² 190 290

VII) Feed water flow through the heater

Kg/hr 360,000 360,000

VIII) Temperature of feed water at heater inlet

°C 178.55 197.75

IX) Temperature of feed water at heater outlet

°C 197.75 2330.95

X) Quantity of steam flowing through heater

Kg/hr 11,133 28,459

XI) Temperature of condensate drain exit of heater

°C 204.05 236.55

XII) Drain flow entering the heater

Kg/hr 29,916 -

XIII) Drain flow leaving the heater

Kg/hr 33,315 29,916

2.10 DEAERTOR

I) Type Perforated tray type with external vent condenser

II) Design pressure i) Storage Tank and heater 12 kg/cm2 & full vaccum

ii) Vent condenser shell side 12kg/ cm2

& full vaccum water side 16 kg/cm2

III) Mean active storage capacity of tank 2/3 dia (normal level)

m³ 80

35

IV) Volume of D/A storage tank

m³ 120

V) Dissolved O2 contain in outgoing F.W

Less than 0.005 cc/litre

2.11 GENERATOR HYDROGEN SYSTEM

2.11.1 HYDROGEN SYSTEM

I) Hydrogen Gas cylinder

6 cylinders

II) No. per distributor 2 groups / 3 cylinder per group

III) Cylinder pressure atg 150

IV) Free volume of cylinder

m³ 6

V) Setting of safety valve at header

atg 5

VI) Pressure regulator for feeding to generator

atg 3.0 - 3.5

VII) Number of cylinders required for filling the generator to 2 atg pressure

At rest 28 cylinders (168 m³)

VIII) Number of cylinders for 5 days operation (max allowable leakage 24 m³/day)

20 cylinders

2.11.2 CARBON DIOXIDE GAS CYLINDER

I) Number per distributor

Per each of two groups

II) Cylinder pressure atg Around 65 atg

III) Free volume of cylinder

m³ 10 m³ (20 kg of CO2)

IV) Setting of safety valve on the header

atg 5

V) Pressure to be maintained inside the generator during scavenging

mmwc 150 - 200

VI) Number of cylinders stored for scavenging operation (at rest)

18 CO2 bottles (for scavenging 7 cylinders required)

2.11.3 HYDROGEN DRYERS

I) Number per unit Two

36

II) Drying media Silica gel

III) Drying temperature

°C 108 °C of silica gel

2.11.4 HYDROGEN COOLLERS

I) Number per unit 6

II) Type HC-WII-BS/cu. 6 (10x5-2-260)

III) Portion Horizontal

IV) Cooling medium Clarified water

V) Losses dissipated KW 1,500

VI) Coolled medium Hydrogen at 2 atg

VII) Flow of H2 through cooler

m³/sec 30

VIII) Flow of water through cooler

m³/hr 250

IX) Cooler water temperature

°C 34

X) Inlet cold H2 temperature (max)

°C 40

XI) Flow resistance (Hydrogen water side)

mmwc 12 - 4000

2.12 SEAL OIL SYSTEM

2.12.1 Seal oil pressure/ temperature

I) Hydrogen side pressure

atg 0.75 atg higher than H2 pressure

II) Air side pressure atg 0.55 atg higher than H2 pressure

III) Seal oil temp. at inlet to sealing rings

°C 25- 35

IV) Temperature of oil in vaccum tank

°C 40- 50

V) Working pressure of vaccum tank

(-) 0.85 to (-) 0.92

2.12.2 SEAL OIL COOLER

I) Number per unit 1+1=2

II) Type Shell & Tube, horizontal

III) Total cooling water flow

m³/hr 70

IV) Heat transfer area m² 24.2

V) Inlet oil temperature

°C 40- 50

37

VI) Output oil temperature

°C 25- 35

VII) Working pressure of oil

atg 4.5

2.12.3 SEAL OIL PUMPS Two

I) Main Seal oil pump motor

7 KW, 415V, 50 Hz, 700 RPM

II) Emergency seal oil pump

4.8 KW, 220V- DC

2.12.4 EQUALISING TANK

I) Number per unit One

II) Capacity up to normal level (including stilling chamber)

Litres 450

2.12.5 VACCUM PUMP One

I) Type of pump Gear pump

II) Pump motor rating 7 KW, 415V, 50 Hz

2.13 UNIT CONDENSATE FLOATING TANK/ HOTWELL

I) Capacity m³ 300

CIRCULATING WATER SYSTEM FOR CONDENSER COOLING

1 A Main Circulating Water Pump

I) Application Main CW Pump

II) No. Five (5) (for 2 units, 1 standby)

III) Pump type BHO 70, mixed flow, single stage forced cleaned water lubrication pump

IV) Capacity (each) m3 /hr 8575

V) Bowl head TDH M 26.18

VI) Speed RPM 594

VII) Rotation Clockwise when viewed from top

VIII) Shut off head 42-in design speed

IX) Starting torque delivery valve closed

KW 605

X) Maximum working pressure allowed

kg/cm2 2.85

38

XI) Motor HP KW 795 (BHEL)

B Main circulating water Sump levels

I) Sump bottom M 95.0 (EL)

II) Minimum available pump sub-mergence measured from bell mouth

mm 3740

III) Capacity m3 2000

IV) Minimum water level for pump in operation

99.50

V) Normal water level

M 100.0

VI) Max, water level M 100.3

C Quantity of Lube Water

Quantities of lube water for CW pump motor brg.

Lt/Min 30

2 CONDENSATE PUMP

I) Type 150 CJNV/6

II) No. No. 6(3 for each Unit)

III) Capacity T/hr 160

IV) Head mwc 270

V) Speed RPM 1489

VI) Minimum output of Elect. Motors

KW 195

I) Squirrel cage Inductance Motor Rated capacity

KW 225

3 CONDENSATE BOOSTER PUMP (Horizontal Multi Stage)

I) Type 100 CJH/7

II) No. Nos. 4(2 for each unit)

III) Capacity t/hr 65

IV) Delivery Head MWC 200

V) Speed rpm 1470

39

VI) Input KW 56

VII) Temperature of steam

°C 120

VIII) Squirrel cage Inductance Motor Rated capacity

KW 90 KW

4 BFP Technical Specification

I) Type

200KHI

II) No Nos 4 (2 for each Unit)

III) Delivery capacity lpm 8180

IV) Feed water temperature

°C 158

V) Head developed by pump

mlc 1960

VI) Speed RPM 4500

VII) Pressure at suction branch

ata 9

VIII) Quantity of water for warming up

t/hr 8

IX) Lubrication Forced

X) Consumption of cooling water

l/m 280

XI) Net weight of pump

KG 5850

XII) Arrangement 1+1

XIII) Pipe size (Suc/Disch.)

inch 10

XIV) Motor

XV) Make BHEL(HYD)

XVI) Type AM4000/6600

XVII Output KW 4000

XVIII Rated voltage KV 6.6

XIX Current Amps 421

XX Speed RPM 1484

5 CLARIFIED WATER PUMP

No. 3

I) CSD NO.& Make L-7153 Fairbanks Morse

II) Fig. & Size 7000-8M-8 STG

III) Capacity m3/hour 42

IV) TDH M 50

40

V) SPEED RPM 1460

VI) Motor Rating H.P 12.5

VII) Efficiency % 77

VIII) Bottom Clearance mm 152

6 FILTER BACK WASH PUMP

No. 3

I) CSD NO. JTC12GM WPIL

II) Fig. & Size KV-160


IV) Bowl Head mwc 15.19

V) SPEED RPM 1460

VI) Motor Rating KW 17.5


VIII) Surface Discharge Head

inch 12*8

7 BCW PUMPS Nos 7

I) CSD NO. L-7167 Fairbanks Morse

II) Fig. & Size 7000-15H-4 STG


IV) TDH M 60

V) SPEED RPM 1460

VI) Motor Rating H.P 160



8 BCW DRAIN PUMPS

Nos 5

I) CSD NO. L-7175 Fairbanks Morse

II) Fig. & Size 7000-15H-2 STG


IV) TDH M 25

V) SPEED RPM 1460

41


VII) Efficiency % 82.5


9 RAW WATER PUMP

Nos 3

I) Sr. NO. 839587-89

II) Fig. & Size 6360W#14-2


IV) TDH mwc 12

V) SPEED RPM 975




10 COLONY PORTABLE PUMPS

Nos 5

I) CSD NO. JTS-8B WPIL

II) Fig. & Size inch 22*6


IV) No. of stages 8

V) SPEED RPM 2900

VI) Motor Rating HP 75

VII) Efficiency % 69.5

VIII) Bowl Head M 180.10

11 SERVICE WATER PUMP

Nos 2

I) Sr. NO. 320031/32-75KSB

II) Fig. & Size MLC-KW 3.592/84

III) Capacity m3/hour 415V

IV) TDH M 60

V) SPEED RPM 1450


42

12 INSTRUMENT AIR COMPRESSORS

04

I) Type Balanced opposite type

II) Model 2HA2T

III) Speed 710

IV) Discharge pressure

Kg/cm² 8.0

V) Air compressed cfm 320

VI) Volumetric efficiency

% 88.59

VII) Brake (H.P) HP 65.2

VIII) Lubrication

XI) Cylinder Teflon Rings

X) Bearings Forced feed by gear pump

XI) Rated Output HP 75

XII) Motor Speed RPM 1500

XIII) Driven V belt drive

13 SERVICE AIR COMPRESSORS

Nos. 03

I) Type Horizontal opposed type

II) Model 2HA2Ter

III) Speed RPM 710

IV) Discharge pressure

Kg/cm² 8.0

V) Air compressed cfm 500

VI) Volumetric efficiency

% 89.69

VII) Brake (H.P) HP 102

VIII) Lubrication

XI) Cylinder Teflon Rings

X) Bearings Forced feed by gear pump

XI) Rated Output HP 120

XII) Motor Speed RPM 1500

XIII) Driven V belt drive

43

14 DRIER 04 nos

I) Type Blower reactivated type

II) Capacity cfm 325

III) Inlet pressure Kg/cm² 07

IV) Inlet temp. °C 40

V) Cycle Time

VI) Absorption 6hours

VII) Heating 3 Hours

VIII) Cooling and idling 3 Hours

XI) Total Cycle time 12 Hours

14.1 Reactivation air Flow

14.1.1 Source Blower R

14.1.2 Net air flow from dryer CFM

325

Temperature required for reactivation

°C 180-200

14.2 HEATER

14.2.1 Heater Rating KW 18

14.3 Desicant Silica gel IS:3401

14.3.1 Type Silica gel

14.3.2 Number Nos 4

14.3.3 Expected life One year

44

2X110MW Stage-II Panipat Thermal Power Station

C & I SYSTEM

Control System Analog Type

Make Keltron/Controle Bailey

Model Keltron- 9020

Description

Operational Amplifiers are basic active elements of 9020 modules. These are third generation ampliefiers. They are supplied with one voltage only with high variation range from 3-33V.

Rack Size & Capacity 19" with 13 modules

Normal Working Voltage 28V(DC)

Max. Working Voltage 33V(DC)

High Voltage Protection 115V DC

220V AC for 5 sec

Plug-In Type Modules Used for Different Functions

Description of some of important modules

P+I Module (FE 7A41)

Proportional Action:2 to

500% Integral Action Time Constant:1.2 to 1875 sec

Setpoint :Internal

Derivative plus summing action module (FE 7B21)

Elaborates the deriative of a signal and the sum of singal and of its derivative to make a proportional and integral control loop with a separate derivative action in association with a P+I module

Memory transfer module (FE 7F91)

This module is associated with all remote control stations to memorize the control signal withourt drift. It transfers the various control modes when associated with a P+I module.

Control Stations (FE 7R11) Controls and displays - control mode auto/manual, controller output signal and position feedback signal.

Summing module (FE 7C12) Algebraically sums up three variables with adjustable gains

Function generator module (FE 7C21)

This module yields any non-linear function between the input and output signal by best fitting several segments with different slopes to the desired function.

Multiplier divider module ( FE 7C51)

Designed for adaptive control through adjustment of gains and time constants to the characteristics of the control system and corrections such as flow correction by pressure and temperature or level correction by pressure.

Square root extractor module ( FE 7C31)

Extacts the square root of a signal with an excellent conformative to the curve. A system that reduces the sensitivity when the input signal is near zero.

45

Dual Alarm module ( FE 7F31)

Controls opening or closing of a contact when the variable is beyond the adjustible setpoint, of a second contact when the variable is below a second adjustable setpoint, on each independent channel.

Tri-stable relay ( FE 7F21) Compares two signals. Opens or closes a contact when the difference between the signal is higher than the dead-band adjusted by a potentiometer.

Dual Voltage Monitor ( FE 7F12)

Opens or closes an external (alarm, logic sequential system, control loop) on either independent channel when the signal applied to the input reaches either a fixed and preset value, or value varying according to another signal. Hysteresis is adjustable.

Low Level Signal Converters ( FE 5A41)

Receive data from RTD thermocouples or any low level signal emitter and transform them into a high level DC signal

Isolation Converters ( FE 5E21) Isolates control loop I/P or O/P. It can receive or transmit non-standard signals and supply a 4-20 mA transmitter with 28 Volt

Switching Module (FE 7E72) Two Switches used for signals accessible on the front plate

Power Supply Specification for 9020 System (Redundant supply)

Make: Keltron Input:220V AC,50Hz, single phase Output Voltage:22-33V lockable, Output Current:50A for each unit

Control Drives

Description Double acting pneumatic control drives accurately operate and position regulating devices such as dampers , fan inlet vanes, butterfly valves etc.

Positioner This accurately positions a pneumatic actuator or diaphragm actuated valve on which it is mounted

Pneumatic Input Signal 0.2 to 1 bar

Pneumatic Supply Pressure 2.8, 3.5,7 bar

Electro-Pneumatic Converter

Description

The Electro-Pneumatic converter is a force-balance instrument which converts control signal of the control system into a proportional pneumatic signal to operate the final control element.

Input 4 to 20 mA

Output 0.2 to 1 Bar

Pressure 5 Bar

46

Air Consumption 180 Lph at NTP

Indicators

Make Masibus, Teletherm

Model (Masibus) 40005-SC, 40005-DC, 408, 506H

Model (Teletherm) Bargraph

Input(Masibus) Universal

Input(Teletherm) RTD,4-20mA/1-5V

Output(Masibus) Relays and 4 to 20 mA Isolated Retransmission Output

Recorders

Make Chino Corporation

Model KR3000, AL3000, AH3000 etc.

Input Universal

Turbovisory System

Make Phillips

Measurement Axial Shift of Turbine rotor at 3 points

Transducer used PR6424/00 and convertor CON010

Module Used DAM 010 used to convert transducer signal into 0-10VDC and 0/4-20mA

Measurement Differential Expansion of turbine at 3 no. of points

Transducer used PR6426/00 and convertor CON 091/16

Module Used DAM 010 used to convert transducer signal into 0-10VDC and 0/4-20mA

Measurement Shell expansion of turbine casing at 2 no. of points

Transducer used PR9350/02

Module Used MAI010 used to convert transducer signal into 0-10V DC and 0/4-20mA current output.

Measurement Vibration measurement

Rack Size

System Power Supply SPS 010(2 No.)

Relay Power Supply RPS 010 (1 No.)

Transducer used PR9266/02

47

Module Used VBM 020

Continuous Opacity Monitoring System(COMS)

Description Measures opacity by shining a light beam through flue gases. An internal microprocessir calculates dust density and other parameters.

Make Land Instruments International

Model 4500MkIII

Supply 24Vdc

Hydrastep

Make Levelstate Systems Ltd.

Model 202

Pressure Rating 207 bar at 370 degreeC

Water Column type 503

Probes type 801

Electronic Unit type 202B(wallmounted FRP enclosure with IP65/NEMA 4X protection)

Remote Display Unit 202B51

O2 Analyser

Make Yokogawa

Type Separate type Zirconia Oxygen Analyser

Model ZR22G, ZR402G

Measurement System Zirconia System

Concentration 0.01 to 100 vol% O2

Output Signal 4 to 20 mA DC

Measurement range Any setting in the range of 0 to 5 through 0 to 100 vol%O2(in 1 vol% O2), or partial range

Hydrogen Purity Analyser

Make: NUCON Model: 4235T Measurement Range: 1) 85 to 100% H2 in Air 2) 0-100% H2 in CO2 3) 0-100% Air in CO2

FSSS (Furnace safeguard supervisory system)

BHELSCAN for flame sensing system

Make BHEL Trichy

Description It is microcontroller based flame sensing system for coal fireball and stable oil flame by HEA (High Energy Arc) System .

Input supply 230 V AC,50Hz

Input Signal 0-2mA AC from Scanner Head Electronics installed in wind box assemble in Field

Signal Processor 4 Microcontroller modules for 1 elevation

48

Display 2½ digit LED display

Programmable parametres Pull in, Pull out, Flicker frequency for Oil,Flicker frequency for coal

Communication Serial Interface by RS232C is available for DCS connectivity

Output of Flame sensing 2/4 output module(means when two or more than two coal flame in an elevation is detected)

Parameters setting 4x 8 bit DIP switches

2/4 Processor 2/4 Logic detection & Fault Alarm

Display Mode selection By push Button

Cooling Air requirement Air manifold pressure at scanner guie pipe must be 150mmwc

Power Supply module

It works in 110V AC or 230 V AC.It produces three DC outputs:- 1) +15 V Dc @ 0.75 Amps.max. 2) -15V DC @ 0.25 Amps. max. 3) +0.5 V DC @ 1.5 Amps. max.

Fuse and capacitors Rating Pico fuse rating 120mA,Capacitors 4700uF,16V

Flame Processor Module Standard Euro card suitable for 19" rack assy., DIP switches are present in this module for parameter settings

Rotary Pulse Generator

Description It is used to measure RPM of RC feeders

Operating Voltage 5V-15V DC

Material Stainless Steel Shaft 10/25mm,Other part Aluminium,Wheel Phosphor Bronze 0.2mm thick

Pulses per Revolution(PPR) 120

Operating Temp. 0°c to 50°c

Mounting Hub Mounting recommended with flexible coupling used for drive

Digital Tachometer

Make Systech 5508

Description It is used to digitally display the RPM measured by Rotary Pulse Generator.

Power Input 230 V AC 50 Hz,% Watt max.

No. of digits 4

Display 7 segment LED display

Time base accuracy 100 ppm,Quartz crystal,16,384 KHz

Description 96mm x 96mm x 200mm(depth)

Weight Not more than 2 Kgs

SADC System

Type BHEL Make

Power Supply ±15 V AC to ±24V AC

Power Supply Module in Contol room

Converts 110V AC to 24V AC,24 V Ac supply is used on desk to vary opening of SADC as per requirement, Sends 15 V DC to card No. CE691-11-271 Total No. of cards- 8 nos.(6 nos. for mill Ato F,1 no. for Auxillary Air,1 no. for HFO guns

Name of Cards in SADC Panel CE691-11-271- Analog Memory Card CE691-11-071-Light Duty Relay CE691-11-031-Relay Memory Card A/M

Vto I convertor Card no. CE691-11-271,This cards send current signal 4-20 mA to SADC at site .At site I/P coverter sends air

49

signal to SADC Cylinders

No. of SADC panels in Control Room

2 nos.

SADC Modules installed in Panels

Auxillary Air Elevation

1) CE691-11-460 2)CE691-11-490 3) CE691-11-040 4) CE691-11-151 5) CE691-13-091 6) CE691-22-071 7) CE691-13-102 8)CE691-6-200 9) CE691-22-260 10) CE691-39-040 11) CE691-13-220 12) CE691-13-121 13) CE691-22-031 14)CE691-43-271 15) CE691-22-071

Auxillary Oil Elevation

1) CE691-41-460 2)CE691-22-060 3) CE691-13-122 4) CE691-13-031 5) CE691-01-031 6) CE691-22-071 7) CE691-27-250 8)CE691-41-440 9) CE691-27-150 10) CE691-22-082

Coal Mills A to F Selector Cards 1) CE691-36-260 2)CE691-43-240 3) CE691-22-031

SADC Cylinder

SADC cylinder Make SMC Pneumatics and Hagan

Model No. 1-MBC63-125KY-RFP5744A

Description

Toatl NO. of Cylinders 52 per unit:- Detailed distribution -: 4 nos. Manual 24 nos. for Coal Mils A to F, 12 nos, for Auxillary Air, 12 nos. For HFO guns at 3 elevations

Air Cylinder Dia. 63mm.

Stroke size 125mm.

Ambient & Fluid temp. 110°c(Max.)

Supply pressure 0.3 - 0.7 Mpa

Signal pressure 0.02-0.1 Mpa

Tubing & fitting Copper & Brass

Mounting Single rear clevis

50

Ignitor System in field

High Energy Arc (HEA) Retractor Assy.)

Make Hindustan Ignition,Ambala Catt.

Total 4 nos./Unit

Air Cylinder Stroke upto 300mm.,Air pressure 5 to 7 kg/cm²

Operating Volatage for solenoid 110V AC

Limit Switches Total 2 nos. per assy.,10 Amps. rated Max. continuous

Operating Temp. 110°c(Max.)

Ignitior Tip

Operating Temp. 650°c(Max.)

Length 191 ± 3 mm

Diameter 15.9 ± 0.15 mm

Ignitior Excitor

Enclosure Construction Heavy-duty corrosion-resistant steel NEMA 4 rated

Input Volatage 110V AC

Input current 5 Amps.(RMS) Max.

Output Volatage 2500+ 150 V DC

Stored Energy 12 Joules Nom.

Spark Rate 4 per second Min.

Duty Cycle 15 minutes ON,30 minutes OFF

Operating Temp. minus 40°c to 75°c

Capacitor rating 10MFD/1500V

Panels in control room

FSSS unit panel 2 nos.

Mill panel Individual panel for each mill,total panels - 6 nos.

HFO gun Panels 2 panels for gun at each elevation,total no. of elevations 3 nos(AB,CD,EF) Total No. of panels-6 nos.

Timedelay Relays for Feeders EAPL ON delay timer 24 to 240 V AC Range 0.3sec to 30 min. MODEL- A1D1 X EAPL power OFF delay Timer 110V AC to 240 V AC Range 0.6sec to 60 sec.

51

Switchyard-I, PTPS-I, Unit #1 to 4

CIRCUIT BREAKERS

ABB Make SF6 CIRCUIT BREAKERS (GT-1, GT-2 & Bus Coupler)

i) Make : ABB

ii) CB Type : ELF SL 4-1

iii) Voltage : 245 kV

iv) Lightening Impulse Withstand Voltage : 1050 kVp

v) Normal Current : 2000A

vi) Short Circuit Breaking Current : 40 kA

vii) Short Time Withstand Current : 40kA for 3 sec.

viii) Line Charging Breaking Current : 125 A

ix) Operating Sequence : O-0.3s-CO-3min-CO

x) First Pole to Clear Factor : 1.3

xi) Gas Pressure SF6 (20o C) abs : 7.0 bar

xii) Air Pressure : 21.5 bar

xiii) Frequency : 50 Hz

xiv) Closing & Opening device Supply Voltage : 220 V DC

xv) Auxiliary Circuit Supply Voltage : 1-Ph 240V AC & 3-Ph

415 V AC

xvi) Mass (Appx.) : 4000kg

xvii) Operating Mechanism : Pneumatic (Opening

& Closing)

CGL Make SF6 CIRCUIT BREAKERS (GT-3, GT-4, Auto Tfr. 2)

i) Make : Crompton Greaves

Limited

ii) CB Type : 200-SFM-40A

52



v) Normal Current : 3150 A

vi) Short Circuit Breaking Current : 40 kA

vii) Rated Short Time Current : 40kA for 3 sec.

viii) Rated Short Circuit Making Current : 100 kA

ix) Line Charging Breaking Current : 125 A

x) Rated Break Time : 60 ms (3 cycles)

xi) Operating Sequence : O-0.3s-CO-3min-CO

xii) Rated Transient Recovery Voltage(TRV) : 364 kVp

xiii) Pole Discrepancy : 3.3ms

xiv) Gas Pressure SF6 (20o C) abs : 6.0 kg/cm2 at 20oC

xv) Operating Air Pressure : 16.5 kg/cm2

xvi) Frequency : 50 Hz

xvii) Closing & Opening device Supply Voltage : 220 V DC

xviii) Auxiliary Circuit Supply Voltage : 1-Ph 240V AC & 3-Ph

415 V AC

xix) Mass (Appx.) : 3900 kg

xx) SF6 Gas Weight : 21 kg

xxi) Operating Mechanism : Spring Closing,

Pneumatic Opening

xxii) Opening Time : 30 ms

xxiii) Closing Time : 100 ms

xxiv) Applicable Standard : IEC-62271-100

TELK Make SF6 CIRCUIT BREAKERS (ST-2, Sewah Ckt-4, Auto Tfr.-1)

i) Make : Transformers And Electricals Kerela

Limited (TELK)

ii) CB Type : OFPI-200-31L-PAR




53

vi) Rated Breaking Capacity : 31.5 kA for 1 sec

vii) Rated Short Circuit Making Current : 80 kA

viii) Rated Break Time : 50 ms

ix) Rated Make Time : 160 ms

x) Operating Sequence : O-0.3s-CO-3min-CO

xi) No. of Breaks Per Pole : 1

xii) Rated Gas Pressure SF6 : 6.0 kg/cm2 xiii)

xiii) Rated Air Pressure : 16.0 kg/cm2

xiv) Compressed Air System : Unit Compressor;

5HP; 260 lpm

xv) Frequency : 50 Hz

xvi) Closing & Opening device Supply Voltage : 220 V DC

xvii) Auxiliary Circuit Supply Voltage : 1-Ph 240V AC & 3-Ph

415 V AC

xviii) Mass (Appx.) : 5600 kg

xix) SF6 Gas Weight : 25 kg

xx) Operating Mechanism : Spring Closing,

Pneumatic

Opening

HBB Make Air Blast Circuit Breakers ( ST-1; Sewah Ckt 1,2 &3; Sonepat 1 &2)

i) Make : Hindustan Brown Boveri(HBB)

ii) CB Type : DLF 245 nc2


iv) U Impulse 1.2/50µs : 1050 kVp


vi) I Breaking : Sym 31.5 kA

54

vii) I Short Time : 55kA for 3 sec

viii) Voltage for Trip Coil : 220V DC

ix) Voltage for Close Coil : 220V DC

x) Operating Sequence : O-0.3s-CO-3min-CO

xi) Operating Pressure : 27-31 kg/cm2

xiii) Mass 1-Ø : 1630kg

xiii) Reference Standard : IEC-56

TMG make 220kV ISOLATORS (Centre Break)

i) Make :TMG ii) Type :SDRE-9 iii) Rated Voltage ,KV :220 iv) Rated Current ,Amp :1250 v) Operation Mechanism :Penumatic vi) Control Voltage DC,Volts :220 vii) Number of pole : 3 viii) Whether all three poles ganged : YES, Mechanically Ganged

S&S make 220kV ISOLATORS (Centre Break)

i) Make : S&S ii) Type : RC 300 iii) Rated Voltage : 220 kV iv) Rated Current : 1250 A v) Operation Mechanism : Penumatic vi) Control Voltage DC,Volts : 220 vii) Number of pole : 3

COMPRESSORS for ABCBs

i) MAKE : INGERSOLL RAND ii) TYPE : 30 (Compact 3-Stage Reciprocating

Compressor) iii) MODEL : 15-T2 iv) Pressure : 21.1kg/cm2 to 70.3kg/cm2 v) Air delivery : 135m3 /min to 886m3 /min

Motor for Compressor i) Make : ABB ii) Duty : S1 iii) Type : Sq.Cage Induction motor iv) Efficiency : 89% v) Capacity :15 Kw vi) HP : 20 vii) No of Phase : 3 viii) Rated Voltage : 415 ix) Running current : 27 Amp

55

x) Frequency : 50 Hz xi) RPM : 1455

14.3 CURRENT TRANSFORMERS

14.3.1 Current Transformers for Generator Transformer Bay (Metering &

Protection)

i) Make : BHEL/HBB

ii) Applicable Standard : IS 2705 (I to IV)

iii) Type /installation : Oil Immersed, Dead

Tank, Outdoor

installation

iv) Phase : 1

v) Frequency : 50

vi) Insulation Level

Highest System Voltage : 245 kVrms

1 min. dry & wet Power Frequency: 460 kVrms withstand Voltage

1.2/50 micro sec. Lightening impulse : 1050 kVp withstand Voltage

vii) Short Time Current Rating : 26 kA for 3 Sec (HBB

make)

40kA for 1

sec (Others)

No. of cores (06) Core-I

(Metering)

Core-II

(Over

Current

& LBB)

Core-

III

(R. E

.F)

Core-IV

(Bus Bar

Prot.)

Core-V

(Bus Bar

Prot.)

Core-VI

(Gen.

Overall

Differential)

Primary Current 1200-800-

400

1200-

800-400

1200-

800-

400

1200-800-

400

1200-800-

400

1200-800-

400

Secondary

Current

1-1-1 amp 1-1-1

amp

1-1-1

amp

1-1-1 amp 1-1-1 amp 1-1-1 amp

Accuracy Class 0.2 5P20 PS PS PS PS

Rated Burden 45 VA 30 VA NA NA NA NA

56

Min. Knee point

voltage in volt

NA NA 400 1200-800-

400

(respectively)

1200-800-

400

(respectively)

990

Max.Excitation

current

NA NA 100

mA

30-40-80 mA

(respectively)

30-40-80 mA

(respectively)

100 mA

Max. Resistance NA NA 4 Ω 6-4-2 Ω 6-4-2 Ω 1.5 Ω

14.3.2 Current Transformers for Generator Transformer Bay (SEM

Metering)

i) Make : BHEL


iii) Type /installation Oil Immersed, Dead

Tank, Outdoor

installation

iv) Phase : 1

v) Frequency : 50



1 min. dry & wet Power Frequency : 460 kVrms withstand Voltage



make)

40kA for 1

sec (Others)

viii) Creepage Distance : 6125 mm

ix) 1 minute Power frequency withstand: 3 kVrms

voltage for secondary winding

No. of cores

(02)

Core-I

(Main

Meter)

Core-II

(Check

Meter)

Primary Current 1200-800-400

1200-800-400

Secondary Current

1-1-1 amp 1-1-1 amp

Accuracy Class 0.2 0.2

57

Rated Burden 15 VA 15 VA

ISF <5 <5

14.3.3 Current Transformers for Station Transformer Bay (Metering &

Protection)

i) Make : BHEL/HBB

ii) Phase : 1

iii) Frequency : 50

iv) Insulation Level




v) Short Time Current Rating : 26 kA for 3 Sec (HBB

make)

40kA for 1 sec (Others)

No. of cores

(05)

Core-I

(Metering)

Core-II

(Differential)

Core-III

(Over

Current

&LBB)

Core-IV

(Bus

Bar

Prot.)

Core-V

(Bus Bar

Prot.)

Primary Current

600-300-150

600-300-150 600-300-150

1200-800-400

1200-800-400

Secondary Current

1-1-1 amp 1-1-1 amp 1-1-1 amp

1-1-1 amp

1-1-1 amp

Accuracy Class

0.2 PS 5P20 PS PS

Rated Burden 45 VA NA 30 VA NA NA

Min. Knee point voltage in volt

NA 350 NA 1200-800-400

1200-800-400

Max.Excitation current

NA 80 mA NA 30-40-80 mA

30-40-80 mA

Max. Resistance

NA 1.5Ω NA 6-4-2 Ω 6-4-2 Ω

14.3.4 Current Transformers for Station Transformer Bay (SEM Metering)

i i) Make : BHEL/HBB


iii) Type /installation : Oil Immersed, Dead Tank,

Outdoor

installation

58

iv) Phase : 1

v) Frequency : 50






make)

40kA for 1

sec (Others)

viii) Creepage Distance : 6125 mm

ix) 1 minute Power frequency withstand : 3 kVrms


No. of cores

(02)

Core-I

(Main

Meter)

Core-II

(Check

Meter)

Primary Current 600-300-150

600-300-150

Secondary Current

1-1-1 amp 1-1-1 amp


Rated Burden 15 VA 15 VA

ISF ** <5 <5

**ISF: Instrument Security Factor.

14.3.5 Current Transformers for Outgoing Feeder Bay (Metering &

Protection)

i) Make : BHEL/SCT/HBB/Heptacare

ii) Phase : 1

iii) Frequency : 50






59

make)


No. of

cores (05)

Core-I

(Meteri

ng)

Core-II

(Main-1

&LBB)

Core-III

(Main-2

PROT.)

Core-IV

(Bus Bar

Prot.)

Core-V

(Bus Bar

Prot.)

Primary Current

1200-800-400

1200-800-400

1200-800-400

1200-800-400

1200-800-400

Secondary Current

1-1-1 amp

1-1-1 amp 1-1-1 amp 1-1-1 amp 1-1-1 amp

Accuracy Class

0.2 PS PS PS PS

Rated Burden

45 VA NA NA NA NA

Min. Knee point voltage in volt

NA 1495-998-998 (respectively)

1495-998-998 (respectively)



Max.Excitation current

NA 26.6-40-40 mA (respectively)

26.6-40-40 mA (respectively)

30-40-80 mA (respectively)

30-40-80 mA (respectively)

Max. Resistance

NA 6-4-2 Ω 6-4-2 Ω 6-4-2 Ω 6-4-2 Ω

14.3.6 Current Transformers for BUS COUPLER Bay (Metering &

Protection)

i) Make : BHEL/SCT/HBB/Heptacare

ii) Phase : 1

iii) Frequency : 50






make)


Towards BUS-1

No. of cores Core-I Core-II Core-III Core-IV

60

(04) (Metering) (LBB) (Over

Current)

(Bus Bar

Prot.)

Primary

Current

1200-800-

400

1200-

800-400

1200-800-

400

1200-

800-400

Secondary

Current

1-1-1 amp 1-1-1

amp

1-1-1 amp 1-1-1

amp

Accuracy

Class

0.2 5P20 5P20 PS

Rated Burden 45 VA 30 VA 30 VA NA

Min. Knee

point voltage

in volt

NA NA NA 1200-

800-400

Max.Excitation

current

NA NA NA 30-40-80

mA

Max.

Resistance

NA NA NA 6-4-2 Ω

Towards BUS-2

No. of

cores (02)

Core-I

(Spare)

Core-II

(Bus Bar

Protn.)

Primary

Current

1200-800-

400

1200-800-

400

Secondary

Current

1-1-1 amp 1-1-1 amp

Class 5P20 PS

Rated

Burden

30 VA ----

Min. Knee

point

voltage in

volt

------- 800 V

Max.

Resistance

------- 15 Ohm

61

14.3.7 Potential Transformers for SEM Metering

i) Make : BHEL/SCT

ii) Applicable Standard : IS 3156 (I to III)

iii) Type /installation : Oil Immersed, Outdoor

installation

iv) Phase : 1

v) Frequency : 50

vi) Voltage Ratio : 240kV/ 120V / 120V √3 / √3 / √3 vii) Insulation Level




viii) Rated Voltage Factor : 1.2 continuous & 1.5

for 30 seconds

ix) Creepage Distance : 6125 mm

x) 1 minute Power frequency withstand : 3 kVrms


No. of cores (02) Core-I

(Main

Meter)

Core-II

(Check

Meter)

Primary Voltage 240 kV/√3 240 kV/√3

Secondary Volt 120 V/√3 120 V/√3


Output Burden 100 VA 100 VA

14.3.8 Potential Transformers for (Metering & Protection)

i) Make : BHEL

ii) Type : ON

iii) Phase : 1

iv) Frequency : 50

v) Line Volts : 220000

vi) Primary Volts : 240000/√3

62

vii) Secondary Volts : 120/√3

viii) Insulation Level




ix) Rated Voltage Factor/Time : 1.5 /30 seconds

x) VA Per Phase : 500

xi) Class : 1.0

xii) Primary Neutral : Earthed

Xiii) Standard : IS:3156

14.3.9 CGL Make Capacitor Voltage Transformer (CVT)- On outgoing Ckt.

i. Make : Crompton Greaves ii. Type : CVE:245/1050/50 iii. Standard : IEC:186(87); IEC:358(90)

IS:3156(92); IS9348(98) iv. Highest System Voltage : 245 kV v. Equi. Capacitance : 8800(+10% to-5%) pf vi. Frequency : 50Hz vii. Prim. Capacitance : 9470pf nominal viii. Sec. Capacitance : 124475pf nominal ix. Capacitor Oil : 90±5% kg x. Insulation Level : 460KV/1050kVp xi. Voltage factor : 1.2 CONT. & 1.5 for 30sec xii. Intermediate Voltage : 10kV xiii. Total Simult. Burden/Class : 150VA/1.0 xiv. Voltage Ratio & other details :

Description Primary Secondary

CORE-I CORE-2

A-NHF 1a-1n 2a-2n

Volts 220000/√3 110/√3 110/√3

VA ----- 100 50

Class ------ 1.0 & 3P 3P

14.3.10 Alstom Make Capacitor Voltage Transformer (CVT) - On outgoing

Ckt.

i. Make : Alstom T & D India Ltd. ii. Type : CVCEC/245/1050

iii. Standard : IEC:186 iv. Rated Voltage : A-N,220/√3kV v. Highest System Voltage : A-N,245/√3kV

63

vi. HF Capacitance : 5000(+10% to-5%) pf vii. Frequency : 50Hz

viii. Prim. Capacitance C 1 : 5238 pf (+10% to -5%) ix. Sec. Capacitance C2 : 110000pf (+10% to -5%) x. Weight : 675 kg

xi. Insulation Level : 460KV/1050kVp xii. Voltage factor : 1.2 CONT./1.5-30sec

xiii. Nom. Intermediate Voltage : 10/√3kV xiv. Total Simult. Burden/Class : 90VA xv. Voltage Ratio : 240000V / 120V / 120V

√3 / √3 / √3

CORE-I CORE-2

Winding 1a-1n 2a-2n

Volts 120/√3 120/√3

VA 45 45

Class 0.5 3P

PANIPAT TERMAL POWER STATION(UNIT-1 to 4)

(220kV Switchyard-1)

GENERATOR TRANSFORMER (4 nos. for Unit I & 4 nos. for PTPS-1) i) Make : BHEL ii) Rated Output : 140/98/70 MVA iii) Type of Cooling : OFB/OB/ON (OFAF/ONAF/ONAN) iv) Rated Voltage- HV/LV : 240/11 kV v) Rated Current HV/LV : 336.79/7348.3 A(at 140VA) vi) Phase : 3 vii) Frequency : 50 viii) Vector Group Yd1 ix) Temperature rise of OIL : 45°C above 50°C ambient x) Temperature Rise of Winding : 60/55°C above 50°C ambient xi) Tappings : OLTC 20 Steps (Make BHEL)

+5% to -10% (@1.25%) xii) OLTC Type : MA7 (BHEL) xiii) Impedance (principal Tap) : 12.50%

64

xiv) No. of cooling Units : 06 no. Fans & 2 no. Pumps xv) No. of standby pump & Fan in cooler : 02 no. Fans &2 no. Pumps xvi) Approximate Qty of OIL : 48,400 Litre xvii) Insulation Level HV : 900 kVp

Insulation Level LV : 75 kVp Insulation Class HV Neutral : 38 kVrms

xviii) Weight Total Weight : 200,000 kg Core & Coil : 101,130 kg Oil : 41400 kg (48400 Liters)

xix) Air Circulation : 6 X 365 m3/min.



STATION TRANSFORMER (For Unit I&2-1 No, Unit 3 &4-1 No.) i) Make : BHEL ii) Rated Output : 28/25 MVA iii) Type of Cooling : ON/OB (ONAF/ONAN) iv) Rated Voltage- HV/LV/SV : 240/11/7 kV v) Rated Current HV/LV /SV : 73.5/2307/490.7 A (at 28MVA) vi) Number of winding per Phase : 3 (3 phases) vii) Frequency : 50 Hz viii) Vector Group (HV/LV) : Yy0 (HV/SV) : Yd1 ix) Temperature rise of OIL : 45°C x) Temperature Rise of Winding : 55˚C over ambient of 50˚C xi) Tappings : OLTC (Make BHEL)

+10% to -10%(@

1.25%)

xii) Impendance (Principal Tap) : 12.0%AT Base28MVA) xiii) No. & Capacity of cooling Units : 02 no. Fan. xiv) No. of standby Fan in cooler : 1 No. xv) Type of Tank Construction :

65

Conventional Type xvi) Approximate Qty of OIL : 35510 Litre xvii) Insulation Level HV : 900 kVp Insulation Level LV : 60 KVp Insulation Class HV Neutral : 38 kV RMS Insulation Class LV Neutral : 22 kV RMS Insulation Class SV : 28kV RMS xviii) Weight

Total Weight : 106040 kg Core & Coil : 43710 kg Oil : 30050 kg (35510 Liters)

xix) Air Circulation : 2 X 365 m3/min.



UNIT AUX. TRANSFORMER (4 nos.- One for each unit) i) Make : BHEL

ii) Rated Output : 15 MVA

iii) Type of Cooling : ON

iv) Rated Voltage- HV/LV : 11/7KV

v) Rated Current HV/LV :

787.3/1237.2A

vi) Number of winding per Phase 2 (3 phases)

vii) Frequency : 50 Hz

viii) Vector Group : Dyn11

ix) Temperature rise of OIL : 45°C above

ambient

temp.50˚C

x) Temperature Rise of Winding : 55°C above

ambient

temp.50˚C

66

xi) Tappings : OFF-CIRCUIT Tap changer

+5% to -5% (@2.5%)

xii) Impendance (principal Tap) : 7.0% + IS

tol.

xiii) Type of Tank Construction : Conventional

Type

xiv) Approximate Qty of OIL : 9250

Litre (Approx.)

xv) Insulation Level HV : 75 KVp

Insulation Level LV : 60KVp

xvi) Weight Total Weight : 35730Kg (Approx.) Core & Coil : 16320Kg(Approx.)

Oil :

7830Kg(Approx.)



SERVICE TRANSFORMERS (Total-29 no.) i) Make: NGEF ,KAVIKA,GEC

ii) Rated Output : 1600KVA, 6.6/0.433 KV 1000KVA,6.6/.433KV 2000KVA, 11/6.6KV

iii) Type of Cooling : AN (OIL FILLED)

iv) Rated Voltage- HV/LV : 6.6 kV/0.433 kV

Or 11kv/6.6 kV

v) Rated Current HV/LV 1600 kVA-6.6/.433KV-140/2133A 1000 kVA-6.6/.433kv-87.5/1333 A 2000 kVA-11/6.6KV-104.98/174.96A vi) Frequency : 50 Hz

vii) Vector Group : Dyn11

67

viii) Temp rise in winding : 55˚C over ambient of 50 ˚C

ix) Tap Changer : OFF-Circuit

+/- 5%, steps of 2.5%

x) Impendance : 8.0 %(Approx) (1000 kVA) 8.0 % (Approx) (1600 kVA) 7.32% (Approx.)(2000 kVA)

xi) Weight : 1000 kVA – 4550 kg, 6.6/.433kv

1600 kVA – 5960 kg, 6.6/.433kv 2000 kVA-6111kg, 11/.433kv

xii) Application : Unit Service -1000KVA (4

no.)6.6/.433KV

Station Service -1600KVA (4

no.)-6.6/.433KV

Colony Service -2000KVA (1

no.)11/6.6 KV

Coal Handling -1600KVA (2

no.)-6.6/.433KV

Ash Handling-1000KVA (2 no.-Unit-

1&2)-6.6/.433KV

Ash Handling-1600KVA (1 no.-Unit-

3&4)-6.6/.433KV

Raw Water-1000KVA (1 no.)-

6.6/.433KV

Misc. Pump House-1000KVA (1

no.)-6.6/.433KV

Decanting -1000KVA (2

no.)-6.6/.433KV

ESP – 1600 kVA

(6no).-6.6/.433KV

DM Plant -1600KVA (1

no.)-6.6/.433KV

CW Pmp -1600

kVA(2nos)6.6/.433KV

Clarifier -1600KVA(1 no)-

6.6/.433KV

68

Clarifier -1000KVA(1no)-

6.6/.433KV

GENERATOR PROTECTION SYSTEM, EMD-II UNIT #3 & 4

Equipment Protection Description Relay Make/Type CT/PT Ratio

GENERATOR

Gen. Overall differential Protection

English Electric /ALSTOM 8000/5A 11000/110V

Over current Protection English Electric /ALSTOM

Negative Phase sequence Protection

English Electric /ALSTOM

Field fail Protection English Electric /ALSTOM

Under frequency Protection English Electric /ALSTOM

Ist & 2nd rotor E/F Protection English Electric /ALSTOM

Stator Interturn Protection English Electric /ALSTOM

B/UP impedance Protection English Electric /ALSTOM

O/L Protection English Electric /ALSTOM

Over voltage Protection English Electric /ALSTOM

Over flux Protection English Electric /ALSTOM

Stator E/F Protection English Electric /ALSTOM

Reverse Power Protection English Electric /ALSTOM

Low forward power Protection

English Electric /ALSTOM

6.6 KV MOTORS PROTECTION SYSTEM, UNIT #3 & 4

Equipment Protection Description Relay Make/Type

CT/PT Ratio

PA Fan Motor

Phase Over current

EE/ALSTOM

100/1/1A

Sensitive Earth fault

Negative Seq. Over current

Thermal Overload

BFP Motor

Phase Over current EE/ALSTOM

500/1/1A



Thermal Overload

Phase Differential

FD FAN

Motor

Phase Over current EE/ALSTOM

40/1/1A Sensitive Earth fault


Thermal Overload

69

GENERATOR & GENERATOR AUXILIARIES GENERATOR MAIN DATA (2 nos.)

Type TGP 234260/2H

Make BHEL

Rating Continuous

Hydrogen Pressure 2 atg

Apparent Output 137, 500 kVA

Active Output 110, 000 KW

Power Factor 0.8 lagging

Rated Voltage 11, 000 V ± 5%

Rated Current 7220 A

Rated speed 3000 rpm

Critical speed of Generator 2150 rpm

J of Generator Rotor 13.78 tm2

Frequency 50 Hz

Phase connections Double star

Generator Terminals 6

Generator Brushes

Number 42

Size 25x32 mm

Grade HM 6 R

Minimum Diameter of slip Rings 420 mm

Maximum output with Hydrogen Cooling and with one of the 3 Cooler units out of operation

96,250 kVA

Maximum output with Air Cooling 68,750 kVA

ID FAN Motor

Phase Over current

EE/ALSTOM

75/1/1A



Thermal Overload

CEP Motor Phase Over current EE/ALSTOM

30/1/1A


Nagative Seq. Over current

Thermal Overload

Coal Mill Motor

Phase Over current EE/ALSTOM 30/1/1 A



Thermal Overload

HP Ash Water Motor

Phase Over current EE/ALSTOM 30/1/1 A



CW Motor Thermal Overload EE/ALSTOM 125/1/1 A



Phase overcurrent

70

Maximum inductive output at the rated Voltage and Zero Power factor lagging

110,000 kVAr

Maximum capacitive output at the rated Voltage and Zero Power factor lagging

50,000 kVAr

Maximum amplitude of the sudden short circuit current including DC component

10.7 x In peak

Inherent voltage-regulation 33.5%

Short Circuit ratio 0.59

The efficiencies of the Turbo-generator including losses in the excitation system and bearings at the following loadings are as given below (at Hydrogen Pressure: 2 atg)

% Load 100 75 50 25

at 0.8 p.f. lagging 98.32 98.29 98.00 96.84

at U.P.F 98.8 98.76 98.52 97.56

Reactances (Informative)

Direct axis unsaturated sychronous reactance

Xd 198%

Direct axis transient reactance X'd 24.7%

Direct axis subtransient reactance X''d 16.8%

Negative sequence reactance X2 16.8%

Zero sequence reactance X0 8.3%

Time Constants (Informative)

Direct axis transient open-circuit time constant

T'd0 5.51 sec.

Direct axis transient short-circuit time constant T'd 0.687 sec.

Direct axis subtransient short-circuit time constant T''d 0.03 sec.

Armature short-circuit time constant

Ta 0.339 sec.

HYDROGEN COOLERS:

Type HC-W II-Bs/Cu 6 (10x5-2-260)

Number of Cooler elements 6

Cooling Medium Water of a quality accepted byboth BHEL, Hyderabad and the Customer.

Cooled Medium Hydrogen at 2 atg

Losses dissipated 1700 KW

Quantity of Hydrogen 30m2/sec.

Quantity of Cooling water 250 m2/hour

71

Cooling water maximum Temperature 36 degree Cen.

Inlet cold Hydrogen maximum temperature 42 degree Cen.

Flow resistance- Hydrogen Side 12 mm of w.c

Flow resistance- water side 4000mm of w.c.

LT (415V) SWITCHGEAR

1. i) MAKE : L&T

ii) Type : CN-CS

iii) Rated Operational Voltage : 415 V+/-10%vac

iv) Power Frequency Withstand : 2.5 kV for 1 min

v) Breaker Type : ACB Type C power

vi) Enclosure Protection : IP 52 (IP-42 for 1600 Amp & Above)

vii) Rated short time withstand : 50 kA for 1 sec

2. i) MAKE : Siemens

ii) Type : 3WE48/58






3. i) MAKE : EE

ii) Type : M-Pact






220V DC SYSTEM

MAIN PLANT BATTERY (2 nos.)

i) MAKE : EXIDE INDIA Ltd.

ii) Type : LEAD ACID TUBLER

iii) Float Charging : 29 Amp

vii) Boost Charging : 80 Amp

viii) Recommended specificgravity at 27 0C : 1.2

x) Number of cells per battery : 110 (2 strings of 55 cells)

xi) Type of positive plate : Pocket plate with LEAD plated Steel strip

xii) Type of Negative Plate : Pocket plate LEAD strips

xiii) Separator : High Impact Polystyrene

Xiv) Internal resistance of cells : 0.096 mili ohms

14.6.2 MAIN PLANT BATTERY CHARGER

i) MAKE : UIP

ii) Type : FC & BC

72

iii) Rated Input Voltage : 415 V +/- 10%

v) DC Output : FC-2.18V/Cell BC- 2.76V/Cell

vii) Regulation : +/-1%

viii) Ripple content : 1%

x) Rectifier Transformer capacity : FC – 11.6 kVA BC – 38.8 kVA

ESP TRANSFORMER, UNIT # 3&4

HIGH VOLTAGE RECTIFIER TRANSFORMER FOR DC OUT PUT

DC Out Put 70 kV Peak 800 mA

Temperature Rise: Oil -400C winding-500C

Type of Cooling NAN

KVA Rating 62.8

Voltage NO Load HV-53180V LV-373.5V

Line Ampere HV-1.18 A LV-168.1 A

Phase 1

Frequency 50 Hz

Impedance 5 Ω

Makers Sr. No. 2001550

Elect. Specification No. 625085C

Year of Manufacturing 1983

Diagram Drawing No. 24971950007

Weight of AC Reactor 100 Kg

Weight Rectifier core and winding 580 Kg

Total Weight 1910 Kg

Oil Qty. 750 Liter

technical diary of stage-2 (unit-3&4) … heat input per plan area of (kcal/m /hr) 280000000...

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