Lhb ac buffet car

hardcore Engg

1. Presentation By: Ankur Mahajan Tr. J.E. Electrical Design LHB HOT BUFFET AC COACH

2. INTRODUCTION Linke Hofmann Busch (LHB) coaches  are the passenger compartments of Indian Railways that have been developed by Linke -Hofmann-Busch of Germany. Produced by Rail Coach Factory in Kapurthala , on the  Broad Gauge (1676 mm) network of Indian railways, since 2000.

3. TYPES OF LHB COACHES LGS = Second class self-generating LSCN = Second class 3-tier sleeper (72 berths) LWACCW = AC2 Air-conditioned 2-tier sleeping-car (52 berths) LWACCN = AC3 Air-conditioned 3-tier sleeping-car (72 berths) LWFAC = AC1 Air-conditioned first class sleeping-car (24 berths) LWFCZAC = Air-conditioned executive chair car (56 seats) LWLRRM = Luggage/generator/brake van LWSCZAC = Air-conditioned chair car (78 seats) LWSCZ = Chair car LWCBAC = Air-conditioned pantry/kitchen/buffet car

4. BLOCK DIAGRAM

5. FLOW CHART Pump1, Pump 2 with MCB 1-1.6 A Local Main Supply, Fuse 80A Supply Net 1 Main Fuse 80A Main Contactor S1K02 Main Transformer 750/415 V Main Fuse 100A Insulation Relay MMR, 24V DC MMR Battery Charger Battery Diagnosis ,6A fuse Light control, 10A fuse Supply Net 1 Main Fuse 80A Main Contactor S1K01 Main Transformer 750/415 V Main Fuse 100A Insulation Relay MMR, 24V DC 415, 3Phase 230V, 1 Phase

6. RMPU 1 FLOW CHART(CONT.) 110V, AC 1 KVA Xmer Coach Light with 10A fuse RMPU1 BOOTLE COOLER ,400W CHIMNEY-3,200W INSECT KILLER, 20W HOT DISP., 1.5KW HOT DISP., 1.5KW BURNER-4,9.9KW HOT CASE,1.5KW INSECT KILLER, 20KW WATER BOILER-2&3, 3KW BURNER-2,2KW REFRIGERATOR, 300W RMPU2 WATER BOILER-1, 3KW BURNER-1&3,2KW DEEP FREEZER, 330W CHIMNEY-1&2,200W WATER FILTER,200W OTG-1&2, 1.2KW EXHAUST FAN-2NO’s 230V, Operating Voltage

7. Under frame wiring From To Cable Size Colour FJB FJB 120 R,Y,B 95 BLK 2.5 CH SBC FJB 50 R,Y,B,BLK SBC BULK SUPPLY 25 R,Y,B,BLK SBC TRANSFORMER 25 R,Y,B,BLK 50 R,Y,B,BLK SBC PUMP 4X1.5 R,Y,B,GNYE 2X1 CH SBC LEVEL SENSOR 3X1.5 W,CH,R

8. Under frame wiring SBC +VE FUSE 25 CH 10 CH 1.5 CH BATTERY -VE FUSE 50 W BATTERY +VE FUSE 50 CH 1.5 R, BLK -VE FUSE SBC 25 W 10 W 1.5 W SBC SPEED SENSOR 3X1 SHIELDED W,C 3X1 SHIELDED W,C 3X1 SHIELDED W,C 3X1 SHIELDED W,C

9. 60 KVA TRANSFORMER It is Step Down Transformer Configuration- STAR -STAR Step Down 750 V to 415 V

10. MONO BLOCK SELF PRIMING PUMP ASSEMBLY AND WATER TANKS Pumps- 0.375 KW, 415V, 3 Phase

11. LOCAL MAIN SUPPLY, 415 Volts Used to provide external supply to the coach for pre-cooling the coach standing in the shed

12. WHEEL SET EARTHING Allow the leakage currents to earth through wheel, so as to protect axle bearing.

13. BATTERY, 70Ah BATTERY BOX + ve FUSE BOX 9 x12V Cells of VRLA Battery - ve FUSE BOX

14. Inter Vehicular Coupler Seven pin plug. Three pin for three phase- R , Y, B One Pin for Neutral One pin for Earth Two control pin for safety loop

15. SWITCH BOARD CABINET Disconnecting and earthing device Regulated battery charger Emergency battery charger Contactors and relays 1 KVA transformer for lights Wheel skid protection 24 V dc to dc convertor Microprocessor based controller

16. PANTRY EQUIPMENTS Insect Killer Water Boiler Refrigerator Chimney Electric Hot plate Cooking Table Bottle Cooler and Deep Freezer

17. Capacity 230Ltrs Temp. range -18 to-25 degree cent. Rating 330watt Operating Voltage 230 V Capacity 90Ltrs Temp. range 3 to 5 degree cent. Rating 400watt Operating Voltage 230 V Deep Freezer Bottle Cooler Hot Case Water Boiler Capacity 140 meals Temp. range 30 to 110 degree cent. Rating 1.5 KW Operating Voltage 230 V Compartments 03 Capacity 30Ltrs Temp. range 40 to 110 degree cent. Rating 3 KW Operating Voltage 230 V

18. Electric Hot Plate Rating 2 KW (4 No.) 5 KW (1 No.) Rotary Switch 16Amps 63 Amps Operating Voltage 230 V

19. NEW DEVELOPMENTS

20. EXHAUST TYPE CHIMNEY FOR LHB PANTRY CHIMNEY PROVIDED EARLIER HAD NO EXHAUST TO THE ATMOSPHERE INEFFECTIVE TO REMOVE FUMES & SMOKE – POTENTIAL FIRE HAZARD CHIMNEY WITH EXHAUST ON COACH ROOF DEVELOPED REGULAR CUT-IN FROM 2014-15

21. MODIFIED CHIMNEY CHIMNEY HOOD EXHAUST EXHAUST AIR DUCT

22. COVER WITH LOCKS PROVIDED ON ELECTRICAL PANELS OF HOT PLATES TO AVOID OPERATION BY UNAUTHORISED PERSONS. MODIFICATION IN HOT BUFFET CAR

23. ROAD AHEAD

24. TO ENHANCE SAFETY RESISTIVE HEATING FOR COOKING/FRYING IS REPLACED BY INDUCTION HEATING BASED COOKING/ FRYING PO FOR TWO COACH SETS PLACED MATERIAL EXPECTED IN MARCH-2015 DEVELOPMENT OF INDUCTION TYPE HEATING IN HOT BUFFET CAR POSITION RESISTIVE HOT PLATE REPLACED BY INDUCTION HOT PLATE LEFT HAND SIDE 2KWX2 2KWX2 CENTRE 2KWX2 2KWX2 RIGHT HAND SIDE 2KWX1 1.1KWX3 7KWX1 (3 PHASE) 2KWX1