METRO RAILWAY, KOLKATA PRESENTATION BY ELECTRICAL DEPARTMENT ON THE VISIT OF SRI R.S.GROVER, ADDL. MEMBER ELECTRICAL ON 14 th JULY, 2005.

METRO RAILWAY, KOLKATA

PRESENTATION

BY

ELECTRICAL DEPARTMENT

ON THE VISIT

OF

SRI R.S.GROVER, ADDL. MEMBER ELECTRICAL

ON

14th JULY, 2005

CONSTRUCTION OF 5 RAPID TRANSIT LINES OF TOTAL

ROUTE LENGTH OF 97.5 KM WAS PREPARED IN

1971.

DUM DUM TO TOLLYGUNGE ROUTE LENGTH - 16.45 KMs

BEING THE BUSIEST CORRIDORSANCTIONED ON 1-6-1972.

First METRO Service commenced on 24-10-1984 between ESP-NBN covering 5 stations.

Thereafter different sections were opened progressively and Finally the stretch on 27.9.95.

SALIENT FEATURE

OF

METRO RAILWAY

KOLKATA

GAUGE : 1676 mm

LENGTH (DMI to TOL ) : 16.45 km

GRADIENT : 2% on running line & 4% on approach to carshed.

COACH : BG Bogie & MG Shell

General Features

UNDERGROUND : 15

ELEVATED : 1

SURFACE : 1

DISTANCE BETWEEN STATIONS

AVERAGE : 1.020 km

MAXIMUM : 2.151 km (DMI – BEL)

MINIMUM : 0.597 km (CEN-CWC )

NO. OF STATIONS

TRAIN FREQENCY

 PEAK HOUR : EVERY 8 MINUTES

NON PEAK HOUR : EVERY 10/15 MINUTES

NO. OF TRAINS

WEEKDAYS : 190

SATURDAY & HOLIDAYS : 164

SUNDAYS : 64

ROLLING STOCK/ TRACTION

NO. OF COACHES : 144 (9 NGEF RAKE + 9 BHEL RAKE)

TRAIN COMPOSITION : 2 DMC

2 NDMC-MA

2 NDMC –MC

2 TC  

CLASS OF ACCOMODATION : ONE CLASS

VENTILATION AND AIRCONDITIONING

Main Parameters

MAX PERMISSIBLE TEMP AT STATION : 30 oC

MAX TEMP. IN TUNNEL : 32.8 0C

MAX. RELATIVE HUMIDITY AT STATION : 87%

MAX HUMIDITY IN TUNNEL : 77%

MAX. AIR VELOCITY AT STATION : 2.5 m /sec

AT TUNNEL : 3.0 m/sec

a) TOTAL ESCALATORS : 38b) MINIMUM RISE : 4 Mt.c) MAXIMUM RISE : 7 Mt.d) INCLINATION : 30O

e) WIDTH : 1.1 Mt.f) PASSENGER CLEARING

CAPACITY : 800 Persons/Hour

g) SPEED : 0.45 Mt./Sec.h) MOTOR CAPACITY : 7.5 KW TO 12

KW

ESCALATORS:

Fare structure :

Zone Distance Fare(Rs.)

I up to 5 kms. 4.00II 5-10 kms. 6.00III Above 10 kms. 8.00

Power supply

  33 KV 50 Hz 3 o supply is obtained from CESC at 4 receiving sub-station.

These sub-station are inter-countered with MR 33 KV feeder cable laid through the tunnel.

33 KV is stepped down to 11 KV at receiving sub-station.

Except Rabindra Sadan, all other Metro Railway Stations are having two independent feeders.

33 KV SYSTEM

3rd Rail

Running Rail

33 KV Incoming From CESC

33KV/11 KV

16 MVA(Oil Type)

11 KV System

Traction Transformer

Rectifier

33 KV System

415 Volt System

To Loads like pump, fan, light,AC Plant etc.

Auxiliary Transformer

33 KV Orange

11 KV Green

750 Volt (DC Positive) Red

415 Volt Brown

750 Volt (DC Negative) Black

Metro Railway Electric Power Distribution Systems

Isolators

HSCB

Third Rail System

• Technical assistance extended by OSAKA Municipal Transport Bureau for 3rd rail

current collection and rolling stock design.

•       Air condition and ventilation of OSAKA Metro was adopted as climatic condition are same i.e. high humidity and temperature.

•     Flat bottom foot 52 kg/m rail of high conductivity (specific resistance being seven times that of copper) also known as rimming steel is used as conductor of power at 750 V dc.

•      Overall resistance 0.029 ohms per km.

3rd rail laid as specially prepared bed on the outer side of running track with insulating high density polyethylene inserts for fixing the conductor rail mounting assembly consisting of 3.3 KV porcelain insulator, galvanized mild steel frame work for mounting FRP shroud board on top and rear. 3.3 KV insulators are spaced at 2.50 mt apart .

Third Rail Laying System

Neutral section (air gap) is provided in the trailing direction of station platform at every traction station .

Length of N/section :15.50 mts; current collectors are spaced at 13.50 meters.

Neutral Section

Need for ventilation

To ensure supply of fresh Air for Passengers(O2)

To dilute obnoxious & hazardous gases

To bring down the relative humidity

To dispose of large quantity of heat by Traction Eq.,Auxiliary appliances, Human Body

To dispose of heat leaked inside the subway from the surrounding soil

Air Ventilation Design criteria

Fixing Up Ambient Condition (90% of day of any season) from last 5 Year Record from Metrological Department at 10 Hrs. when peak Traffic Occurs.

SeasonSeason TemperatureTemperature Relative HumidityRelative Humidity

Summer 36 55

Monsoon 33 70

Winter 27.2 57

Because of pollution and Dust, Air washery had been provided at every fresh air intake. Now at Esplanade station, dry air filters have been provided & air washery closed to save electricity consumption.

Rake Formation

DMC

(TOL)

NDMC

(MC)TC

NDMC

(MA)

NDMC

(MA)

NDMC

(MC)TC DMC

(DMI)

ParameterParameter BHEL RakeBHEL Rake NGEF RakeNGEF Rake EMU(open line)EMU(open line)

Coach length (mm) 19500 19500 21412

Coach Height(mm) 2740 2740 3684

Rake Formation 6MC+2TC 6MC+2TC 3MC+6TC

No of TMs 24 24 12

TM HP/KW 124/93 213/160 224/168

Total HP/KW 2976/2232 5112/3840 2688/2016

TM Voltage 338 675 535

Final Connection 2S+2P All Parallel All Parallel

Comparative Study

ParameterParameter BHEL RakeBHEL Rake NGEF RakeNGEF RakeEMUEMU

(open line)(open line)

Acceleration (M/S2) 1.1 1.1 0.53

Braking (M/S2) 1.1 1.1 0.89

E. M. Braking (M/S2) 1.3 1.3 0.89

Type of Brakes ED,EP,Auto,EM ED,EP,Auto,EM EP,Auto,EM

Nominal Voltage 750 Volt DC 750 Volt DC 25 KV AC

Tare Weight (Ton) MC=40,

TC=29

MC=40,

TC=29

MC=63,

TC=39

Tare Rake Weight (Ton) 298 298 423

Numbers of Passengers 2500 2500 3000

Passenger’s wt @ 60 kg(Ton) 150 150 180

Gross rake weight 448 448 603

HP/Ton (CRUSH) 6.64 11.41 4.46

Comparative Study (Contd..)

EXTENSION OF METRO FROM TOL TO GARIA

SANCTIONED IN 1999-2000

TOTAL ROUTE LENGTH : 8.70 Kms.

VIADUCT : 8.60 Kms.

LEVEL TRACK : 0.10 Kms.

NO. OF STATIONS : 6

KUDGHAT,BANSDRONI,NAKTALA,GARIA

BAZAAR,PRANABNAGAR and NEW GARIA

SANCTIONED COST : Rs. 907 Crores

1/3 COST OF THE PROJECT WILL BE SHARED BY THE STATE GOVERNMENT

T.D.C. : MAR. 2007

Number of Stations

• Elevated Stations 5 (five) Nos.

• Surface Station 1 (one) No.

• NAME OF STATIONS :

KUDGHAT

BANSDRONI

NAKTALA

GARIA BAZAR

PRANABNAGAR

NEW GARIA ( AT SURFACE )

CIRCULAR RAILWAY EXTENSION:

Metro Rly. is also executing Circular Railway extension project for E.Rly.

a) Extension from Prinsepghat to Majerhat:

Project sanctioned in 1999-00

Route length : 5.75 Kms.

Viaduct : 4.00 Kms.

Level track : 1.75 Kms.

No. of station : 2 (Both elevated)

Khidderpore & Remount road

Estimated cost : 118 Crores

T.D.C. : Work Over CRS’s sanction awaited

CIRCULAR RAILWAY EXTENSION Contd.:

b) Extension from Dumdum Cantt. to NSC Bose Airport:

Project sanctioned in 2000-01

Route length : 4.00 Kms.

Viaduct : 3.25 Kms.

Level track : 0.75 Kms.

No. of station : 2 (Both elevated)

Jessore Road & Airport station

Estimated cost : 111 Crores

T.D.C. : Aug. 2005

50 M3

80 M3 80 M3

50 M3

30 M3

Under Platform exhaust

25 M3

5 M3 5 M3

30 M3

Platform leakage

To Tunnel

Mid Tunnel exhaust

Mid Tunnel exhaust

Air Flow Air Flow Diagram in per Diagram in per

Second Second

Air intake (110 M3)

Air intake (110 M3)

Air intake

60 M3(Total) 60 M3(Total)

Platform (60 M3)

Tunnel (80 M3)

Under Platform (25 M3)

Platform leakage (5 M3)

(50 M3)

(30 M3)

Plate 14: Opposite Dum-Dum TSS Single Bolt connection for two cables on 3rd rail. At least two bolts connections suggested

GENERAL SERVICES

Power ConsumptionGeneral0%

Utilisation % of General Service Consumption

Illumination Except HQ 10.7

ESCALATOR & LIFTS 3.2

VENTILATION AND WASHERY 50.3

AIRCONDITIONING 23.6

S&T AND FARE OLLECTION 2.1

METRO HQ 1.7

PUMPING 5.1

COLONY ILLUMINATION 1.1

WORKSHOP & DEPOT 2.2

TotalTotal 100100

Breakup Consumption of General Service Energy Consumption

Non-Traction:63% Traction:37%