Train lighting system

3. Train lighting is one of the important passenger amenities which influence the image of Railways. Although 1st train ran
Different types of TL systems adopted in Indian Railway:
•Axle driven system working on 24 V DC
•Axle driven system working on 110V DC
•MOG with 415 V, 3 phase generation and 110V AC
utilization
•EOG with 415 V, 3 phase generation and 110V AC
utilization
•EOG with 750 V, 3 phase generation and 415 & 110V AC
utilization
•Power feeding from OHE
•HOG (Head on generation) - 25 KV, 1 phase.
(Under observation).
Axle driven system working on 24 V DC
In this system, coaches are provided with D.C Dynamo / brushless alternator driven by coach axle through flat belt or
Capacity:
•Dynamo- 60 A & 100 A with inherent regulation.
•Brushless alternator – 100 A (3 Kw for MG) & 150 A (4.5 Kw for
BG)
Battery- It was supported with 210 Ah & 320 Ah cap batteries.
Incandescent / Fluorescent lamps are provided in the coach.
Fan- 400 mm fixed type or swiveling type are used in the coach. This system is phased out from the Railways.
Axle driven system working on 110V DC
This system has proved more reliable. In this system 4.5 Kw brushless alternators are driven through V-belts from axl
120 Ah , 110 V DC lead Acid / VRLA batteries are used for non-AC coaches, whereas 800 Ah/ 1100 Ah batteries are u
Advantage of 110 V DC system over 24 V DC system:
•Size of all cable reduced because less current, hence less line loss.
•Capacity of battery is reduced from 320 Ah to 120 Ah.
•Illumination level improved from 30 lux to 60 lux with 20 W FT only.
•Expenditure of frequent replacement of flat belt reduced by providing of V-belts.
•Theft of belts is reduced.
•Failure rate reduced and coach performance improved.
Dis-advantage of 110 V DC system over 24 V DC system:
•Staff during maintenance period should be more care full.
•V-belts cannot be fitted on enroute, so sick-marking of coach increases.
•Fitment of endless V-belts depends on mechanical department.
EOG (End-on – generation)
Power supply is derived from DG set 415 V/ 750v, 3 phase, 50 Hz. Power is distributed to entire rake through 2 sets o
Major Equipment:
•Alternator: 4.5 kw, 110V, 3 phase, brush less type, totally enclosed, reversible shunt wound.
Major Equipment:
•Alternator:- 25 kw/ 22.75 kw/ 18 kw, 110V, 3 phase,
Brush less type, totally enclosed, reversible shunt Wound.
•RRU- 25 kw/ 22.75 kw/ 18 kw,
•Battery charging transformer cum rectifier= 200 A
•Battery: - 1100 Ah/ 800 Ah, 110v DC, lead acid / VRLA type
•AC equipments;
•Compressor/comp. motor-12.5/10/8.5 hp
•Condenser / condenser motor- 1 hp/ 0.75 hp
•Blower motor - 1 hp/ 0.75 hp
•WRA (Water raising apparatus) - 1.5 hp, 415v/ 110v AC/DC motor type.
•RMPU: - 7.0 tones.
Humidity control By microprocessor Old conventional based contro
Reason of smoke emission in belts or dropping of V-belts
•PULLEY
•Pulley groove angle to large.
•Incorrect pulley arrangement
•Poor quality of pulley material.
•V- BELTS
•Mis-match belt sets.
•over / under tension of belts
•Poor quality of v-belts.
•V-belts cord defective / inverting of V-belts in p
•V-belts over riding
C.ALTERNATOR & REGULATOR
•Alternator bearing jammed / over riding.
•Magnetic locking of the rotor.
•Over loading of alternator.
•Load sharing of alternator not proper.
Remedial action:
V- Belts cut & proving EFT from adjacent coach by isolatin
Prevention of fire on AC coaches (SUMMARY o
(Ref: RDSO’s LN- PE/D/O/0008- 2005( Rev’O’)) Source
•Excessive current: This is the only probable cause of electrical fires on coaches due to
Sizes of cables on different circuits have been stan
•Cable size: Copper conductor PVC insulated un-sheathed cable to RDSO specification no- RDSO/Spec/TL/0027-2002(Re

4. light & fan works on 110 V AC
750 V DC--

light & fan works on 110 V AC.
1500 V DC--

light & fan works on 141 V AC
25 KV--

- Tumbler switch
- Alternator + RRU
- DFB & fuses
- Axle pulley
- EFTs
- Battery
- Fans
- Light fittings
- Refrigerator
- Call bell in saloon
Train lighting is one of the important passenger amenities which influence the image of Railways. Although 1st train ran
Different types of TL systems adopted in Indian Railway:
•Axle driven system working on 24 V DC
•Axle driven system working on 110V DC
•MOG with 415 V, 3 phase generation and 110V AC
utilization
•EOG with 415 V, 3 phase generation and 110V AC
utilization
•EOG with 750 V, 3 phase generation and 415 & 110V AC
utilization
•Power feeding from OHE
•HOG (Head on generation) - 25 KV, 1 phase.
(Under observation).
Axle driven system working on 24 V DC
In this system, coaches are provided with D.C Dynamo / brushless alternator driven by coach axle through flat belt or
Capacity:
•Dynamo- 60 A & 100 A with inherent regulation.
•Brushless alternator – 100 A (3 Kw for MG) & 150 A (4.5 Kw for
BG)
Battery- It was supported with 210 Ah & 320 Ah cap batteries.
Incandescent / Fluorescent lamps are provided in the coach.
Fan- 400 mm fixed type or swiveling type are used in the coach. This system is phased out from the Railways.
Axle driven system working on 110V DC
This system has proved more reliable. In this system 4.5 Kw brushless alternators are driven through V-belts from axl
120 Ah , 110 V DC lead Acid / VRLA batteries are used for non-AC coaches, whereas 800 Ah/ 1100 Ah batteries are u
Advantage of 110 V DC system over 24 V DC system:
•Size of all cable reduced because less current, hence less line loss.
•Capacity of battery is reduced from 320 Ah to 120 Ah.
•Illumination level improved from 30 lux to 60 lux with 20 W FT only.
•Expenditure of frequent replacement of flat belt reduced by providing of V-belts.
•Theft of belts is reduced.
•Failure rate reduced and coach performance improved.
Dis-advantage of 110 V DC system over 24 V DC system:
•Staff during maintenance period should be more care full.
•V-belts cannot be fitted on enroute, so sick-marking of coach increases.
•Fitment of endless V-belts depends on mechanical department.
EOG (End-on – generation)
Power supply is derived from DG set 415 V/ 750v, 3 phase, 50 Hz. Power is distributed to entire rake through 2 sets o
Major Equipment:
•Alternator: 4.5 kw, 110V, 3 phase, brush less type, totally enclosed, reversible shunt wound.
Major Equipment:
•Alternator:- 25 kw/ 22.75 kw/ 18 kw, 110V, 3 phase,
Brush less type, totally enclosed, reversible shunt Wound.
•RRU- 25 kw/ 22.75 kw/ 18 kw,
•Battery charging transformer cum rectifier= 200 A
•Battery: - 1100 Ah/ 800 Ah, 110v DC, lead acid / VRLA type
•AC equipments;
•Compressor/comp. motor-12.5/10/8.5 hp
•Condenser / condenser motor- 1 hp/ 0.75 hp
•Blower motor - 1 hp/ 0.75 hp
•WRA (Water raising apparatus) - 1.5 hp, 415v/ 110v AC/DC motor type.
•RMPU: - 7.0 tones.
Humidity control By microprocessor Old conventional based contro
Reason of smoke emission in belts or dropping of V-belts
•PULLEY
•Pulley groove angle to large.
•Incorrect pulley arrangement
•Poor quality of pulley material.
•V- BELTS
•Mis-match belt sets.
•over / under tension of belts
•Poor quality of v-belts.
•V-belts cord defective / inverting of V-belts in p
•V-belts over riding
C.ALTERNATOR & REGULATOR
•Alternator bearing jammed / over riding.
•Magnetic locking of the rotor.
•Over loading of alternator.
•Load sharing of alternator not proper.
Remedial action:
V- Belts cut & proving EFT from adjacent coach by isolatin
Prevention of fire on AC coaches (SUMMARY o
(Ref: RDSO’s LN- PE/D/O/0008- 2005( Rev’O’)) Source
•Excessive current: This is the only probable cause of electrical fires on coaches due to
Sizes of cables on different circuits have been stan
•Cable size: Copper conductor PVC insulated un-sheathed cable to RDSO specification no- RDSO/Spec/TL/0027-2002(Re
Power supply for AC equipments is met from axle driven transom mounted brushless alternator rated 110v DC supply.
Equipments:
• 2 X 18 kw alternator running at > MFO
• 800 Ah cells,
• 200A cap battery charger,
• 417. More energy efficient, modern technology and excellent performance.
Comparison of RMPU with conventional AC coach
SN Description Roof mounted Conventional
1 weight 900 kg 2700 kg
2 Installation time 4 hrs 4 days 3 Refrigerant F-22 (CHCl F2) F-12 (CCl2 F2)
4 Refrigeration charge < 3 kg 15 – 20 kg
5 System design Hermitically Open
sealed
6 Refrigerant leak potential Nil Enormous
7 Maintenance little Heavy
8 Dust collection little Heavy
9 Damage due to CRO NIL Heavy
10 Damage due to flash flood NIL Heavy
11 Performance Excellent Deteriorates
quickly due to dust collection.
12 Technology latest Old and
absolute.
13 Water drop on passenger NIL sometimes
14 Fresh air Taken from roof Taken from side wall of toilet
15 Capacity control 25% to 100% (4 50% to 100% (2 compressors)compressors)
16 Down time for repair 4 hrs (for 4 days (depends

5. light & fan works on 110 V AC
750 V DC--

light & fan works on 110 V AC.
1500 V DC--

light & fan works on 141 V AC
25 KV--

- Tumbler switch
- Alternator + RRU
- DFB & fuses
- Axle pulley
- EFTs
- Battery
- Fans
- Light fittings
- Refrigerator
- Call bell in saloon
Train lighting is one of the important passenger amenities which influence the image of Railways. Although 1st train ran
Different types of TL systems adopted in Indian Railway:
•Axle driven system working on 24 V DC
•Axle driven system working on 110V DC
•MOG with 415 V, 3 phase generation and 110V AC
utilization
•EOG with 415 V, 3 phase generation and 110V AC
utilization
•EOG with 750 V, 3 phase generation and 415 & 110V AC
utilization
•Power feeding from OHE
•HOG (Head on generation) - 25 KV, 1 phase.
(Under observation).
Axle driven system working on 24 V DC
In this system, coaches are provided with D.C Dynamo / brushless alternator driven by coach axle through flat belt or
Capacity:
•Dynamo- 60 A & 100 A with inherent regulation.
•Brushless alternator – 100 A (3 Kw for MG) & 150 A (4.5 Kw for
BG)
Battery- It was supported with 210 Ah & 320 Ah cap batteries.
Incandescent / Fluorescent lamps are provided in the coach.
Fan- 400 mm fixed type or swiveling type are used in the coach. This system is phased out from the Railways.
Axle driven system working on 110V DC
This system has proved more reliable. In this system 4.5 Kw brushless alternators are driven through V-belts from axl
120 Ah , 110 V DC lead Acid / VRLA batteries are used for non-AC coaches, whereas 800 Ah/ 1100 Ah batteries are u
Advantage of 110 V DC system over 24 V DC system:
•Size of all cable reduced because less current, hence less line loss.
•Capacity of battery is reduced from 320 Ah to 120 Ah.
•Illumination level improved from 30 lux to 60 lux with 20 W FT only.
•Expenditure of frequent replacement of flat belt reduced by providing of V-belts.
•Theft of belts is reduced.
•Failure rate reduced and coach performance improved.
Dis-advantage of 110 V DC system over 24 V DC system:
•Staff during maintenance period should be more care full.
•V-belts cannot be fitted on enroute, so sick-marking of coach increases.
•Fitment of endless V-belts depends on mechanical department.
EOG (End-on – generation)
Power supply is derived from DG set 415 V/ 750v, 3 phase, 50 Hz. Power is distributed to entire rake through 2 sets o
Major Equipment:
•Alternator: 4.5 kw, 110V, 3 phase, brush less type, totally enclosed, reversible shunt wound.
Major Equipment:
•Alternator:- 25 kw/ 22.75 kw/ 18 kw, 110V, 3 phase,
Brush less type, totally enclosed, reversible shunt Wound.
•RRU- 25 kw/ 22.75 kw/ 18 kw,
•Battery charging transformer cum rectifier= 200 A
•Battery: - 1100 Ah/ 800 Ah, 110v DC, lead acid / VRLA type
•AC equipments;
•Compressor/comp. motor-12.5/10/8.5 hp
•Condenser / condenser motor- 1 hp/ 0.75 hp
•Blower motor - 1 hp/ 0.75 hp
•WRA (Water raising apparatus) - 1.5 hp, 415v/ 110v AC/DC motor type.
•RMPU: - 7.0 tones.
Humidity control By microprocessor Old conventional based contro
Reason of smoke emission in belts or dropping of V-belts
•PULLEY
•Pulley groove angle to large.
•Incorrect pulley arrangement
•Poor quality of pulley material.
•V- BELTS
•Mis-match belt sets.
•over / under tension of belts
•Poor quality of v-belts.
•V-belts cord defective / inverting of V-belts in p
•V-belts over riding
C.ALTERNATOR & REGULATOR
•Alternator bearing jammed / over riding.
•Magnetic locking of the rotor.
•Over loading of alternator.
•Load sharing of alternator not proper.
Remedial action:
V- Belts cut & proving EFT from adjacent coach by isolatin
Prevention of fire on AC coaches (SUMMARY o
(Ref: RDSO’s LN- PE/D/O/0008- 2005( Rev’O’)) Source
•Excessive current: This is the only probable cause of electrical fires on coaches due to
Sizes of cables on different circuits have been stan
•Cable size: Copper conductor PVC insulated un-sheathed cable to RDSO specification no- RDSO/Spec/TL/0027-2002(Re
Power supply for AC equipments is met from axle driven transom mounted brushless alternator rated 110v DC supply.
Equipments:
• 2 X 18 kw alternator running at > MFO
• 800 Ah cells,
• 200A cap battery charger,
• 417. More energy efficient, modern technology and excellent performance.
Comparison of RMPU with conventional AC coach
SN Description Roof mounted Conventional
1 weight 900 kg 2700 kg
2 Installation time 4 hrs 4 days 3 Refrigerant F-22 (CHCl F2) F-12 (CCl2 F2)
4 Refrigeration charge < 3 kg 15 – 20 kg
5 System design Hermitically Open
sealed
6 Refrigerant leak potential Nil Enormous
7 Maintenance little Heavy
8 Dust collection little Heavy
9 Damage due to CRO NIL Heavy
10 Damage due to flash flood NIL Heavy
11 Performance Excellent Deteriorates
quickly due to dust collection.
12 Technology latest Old and
absolute.
13 Water drop on passenger NIL sometimes
14 Fresh air Taken from roof Taken from side wall of toilet
15 Capacity control 25% to 100% (4 50% to 100% (2 compressors)compressors)
16 Down time for repair 4 hrs (for 4 days (depends

6. light & fan works on 110 V AC
750 V DC--

light & fan works on 110 V AC.
1500 V DC--

light & fan works on 141 V AC
25 KV--

- Tumbler switch
- Alternator + RRU
- DFB & fuses
- Axle pulley
- EFTs
- Battery
- Fans
- Light fittings
- Refrigerator
- Call bell in saloon
Train lighting is one of the important passenger amenities which influence the image of Railways. Although 1st train ran
Different types of TL systems adopted in Indian Railway:
•Axle driven system working on 24 V DC
•Axle driven system working on 110V DC
•MOG with 415 V, 3 phase generation and 110V AC
utilization
•EOG with 415 V, 3 phase generation and 110V AC
utilization
•EOG with 750 V, 3 phase generation and 415 & 110V AC
utilization
•Power feeding from OHE
•HOG (Head on generation) - 25 KV, 1 phase.
(Under observation).
Axle driven system working on 24 V DC
In this system, coaches are provided with D.C Dynamo / brushless alternator driven by coach axle through flat belt or
Capacity:
•Dynamo- 60 A & 100 A with inherent regulation.
•Brushless alternator – 100 A (3 Kw for MG) & 150 A (4.5 Kw for
BG)
Battery- It was supported with 210 Ah & 320 Ah cap batteries.
Incandescent / Fluorescent lamps are provided in the coach.
Fan- 400 mm fixed type or swiveling type are used in the coach. This system is phased out from the Railways.
Axle driven system working on 110V DC
This system has proved more reliable. In this system 4.5 Kw brushless alternators are driven through V-belts from axl
120 Ah , 110 V DC lead Acid / VRLA batteries are used for non-AC coaches, whereas 800 Ah/ 1100 Ah batteries are u
Advantage of 110 V DC system over 24 V DC system:
•Size of all cable reduced because less current, hence less line loss.
•Capacity of battery is reduced from 320 Ah to 120 Ah.
•Illumination level improved from 30 lux to 60 lux with 20 W FT only.
•Expenditure of frequent replacement of flat belt reduced by providing of V-belts.
•Theft of belts is reduced.
•Failure rate reduced and coach performance improved.
Dis-advantage of 110 V DC system over 24 V DC system:
•Staff during maintenance period should be more care full.
•V-belts cannot be fitted on enroute, so sick-marking of coach increases.
•Fitment of endless V-belts depends on mechanical department.
EOG (End-on – generation)
Power supply is derived from DG set 415 V/ 750v, 3 phase, 50 Hz. Power is distributed to entire rake through 2 sets o
Major Equipment:
•Alternator: 4.5 kw, 110V, 3 phase, brush less type, totally enclosed, reversible shunt wound.
Major Equipment:
•Alternator:- 25 kw/ 22.75 kw/ 18 kw, 110V, 3 phase,
Brush less type, totally enclosed, reversible shunt Wound.
•RRU- 25 kw/ 22.75 kw/ 18 kw,
•Battery charging transformer cum rectifier= 200 A
•Battery: - 1100 Ah/ 800 Ah, 110v DC, lead acid / VRLA type
•AC equipments;
•Compressor/comp. motor-12.5/10/8.5 hp
•Condenser / condenser motor- 1 hp/ 0.75 hp
•Blower motor - 1 hp/ 0.75 hp
•WRA (Water raising apparatus) - 1.5 hp, 415v/ 110v AC/DC motor type.
•RMPU: - 7.0 tones.
Humidity control By microprocessor Old conventional based contro
Reason of smoke emission in belts or dropping of V-belts
•PULLEY
•Pulley groove angle to large.
•Incorrect pulley arrangement
•Poor quality of pulley material.
•V- BELTS
•Mis-match belt sets.
•over / under tension of belts
•Poor quality of v-belts.
•V-belts cord defective / inverting of V-belts in p
•V-belts over riding
C.ALTERNATOR & REGULATOR
•Alternator bearing jammed / over riding.
•Magnetic locking of the rotor.
•Over loading of alternator.
•Load sharing of alternator not proper.
Remedial action:
V- Belts cut & proving EFT from adjacent coach by isolatin
Prevention of fire on AC coaches (SUMMARY o
(Ref: RDSO’s LN- PE/D/O/0008- 2005( Rev’O’)) Source
•Excessive current: This is the only probable cause of electrical fires on coaches due to
Sizes of cables on different circuits have been stan
•Cable size: Copper conductor PVC insulated un-sheathed cable to RDSO specification no- RDSO/Spec/TL/0027-2002(Re
Power supply for AC equipments is met from axle driven transom mounted brushless alternator rated 110v DC supply.
Equipments:
• 2 X 18 kw alternator running at > MFO
• 800 Ah cells,
• 200A cap battery charger,
• 417. More energy efficient, modern technology and excellent performance.
Comparison of RMPU with conventional AC coach
SN Description Roof mounted Conventional
1 weight 900 kg 2700 kg
2 Installation time 4 hrs 4 days 3 Refrigerant F-22 (CHCl F2) F-12 (CCl2 F2)
4 Refrigeration charge < 3 kg 15 – 20 kg
5 System design Hermitically Open
sealed
6 Refrigerant leak potential Nil Enormous
7 Maintenance little Heavy
8 Dust collection little Heavy
9 Damage due to CRO NIL Heavy
10 Damage due to flash flood NIL Heavy
11 Performance Excellent Deteriorates
quickly due to dust collection.
12 Technology latest Old and
absolute.
13 Water drop on passenger NIL sometimes
14 Fresh air Taken from roof Taken from side wall of toilet
15 Capacity control 25% to 100% (4 50% to 100% (2 compressors)compressors)
16 Down time for repair 4 hrs (for 4 days (depends