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The following is an extract from the Operating Manual for the production batch of locomotives D1520 - D1861 excepting D1702 - D1706
Further information for these and D1500 -D1519 can be found at www.class47.com
GENERAL DESCRIPTION &
LEADING PARTICULARS D1520 - D1701, D1707 - D1861
| 1.Diesel engine. | 11.Radiator header tank. | 21.Traction motor blowers | 31.Fire extinguishers. | |
| 2.Main generator. | 12.Combined pump set. | 22.Exhausters. | 32.Air filter panels. | |
| 3.Auxiliary generator. | 13.Radiator fans. | 23.Air compressor. | 33.Hydrostatic oil tank. | |
| 4.Traction motors. | 14.Radiator panels. | 24.Main air reservoir. | 34.Measuring and drain tanks | |
| 5.Pressure charger. | 15.Main coolant tank. | 25.Control air reservoir. | 35.Boiler water filling duct. | |
| 6.Engine instrument panel | 16.Battery boxes. | 26.Auxiliary air reservoirs. | 36.Handbrake wheels. | |
| 7.Engine air filter. | 17.Battery isolating switch. | 27.Brake gear cubicle. | 37.Driver's positions. | |
| 8.Silencer. | 18.Main control cubicle. | 28.Steam generator. | 38.Second man's positions. | |
| 9.No. 1 Fuel tank. | 19.Rotary switch and fuse unit | 29.Boiler water tanks. | 39.Cooker. | |
| 10.No. 2 fuel tank. | 20.Resistance frame. | 30.W.C. |
| Manufacturers | Locomotive Builder | Brush Electrical Engineering Co. Ltd. British Railways, Crewe |
| Power Equipment | Brush Electrical Engineering Co. Ltd. Sulzer Bros. (London) Ltd. | |
| Locomotive Dimensions |
Wheel arrangement Length over buffers Width over body Height over roof panel Total wheel base Bogie wheel base Bogie pivot centres Wheel diameter Axle load Weight in working order |
C0-C0 63' - 6" 8' - 9¾" 12' - 9¾" 51' - 6" 14' - 6" 37' - 0" 3' - 9" 19 tons 114 tons |
| Capacities | Fuel - engine and boiler Lubricating oil Coolant Boiler water |
810 gallons 154 gallons 300 gallons 1200 gallons |
| Diesel Engine | Type Continuous rating Bore Stroke |
Sulzer 12LDA28-C 2750 b.h.p. at 800 r.p.m 280 mm (11-02 in) 360 mm (14-16 in) |
| Main Generator (Series/Parallel) D1520-D1574, D1682-D1701, D1707-D1714. |
Type Continuous Rating Maximum Current |
Brush TG160/60 Mk IV 2130 amps at 844 volts 3750 amps |
| (Parallel) D1575-D1681, D1715-D1861. |
Type Continuous Rating Maximum Current |
Brush TG172/50 Mk I 4260 amps at 422 volts 7500 amps |
| Auxiliary Generator D1520-D1574, D1682-D1701, D1707-D1714 |
Type Continuous Rating |
Brush TG69/28 Mk III 500 amps at 110 volts |
| D1575-D1681, D1715-D1861 |
Type Continuous Rating |
Brush TG69/20 Mk I 455 amps at 110 volts |
| Traction Motors | Type Continuous Rating Gear Ratio |
Brush TM64/68 Mk la 710 amps at 422 volts 66 : 17 |
| Battery | Type Rating |
D.P.48RSKA169 169 amp hr. |
| Steam Heating D1520 - D1615 D1682 - D1781 |
Type Rating |
Spanner Mk IIIB 1850 lb/hr. |
| D1616-D1635, D1857-D1861 |
Type Rating |
Stone Vapor BR4625 2750 Ib/hr |
| D1636-D1681 |
Type Rating |
Clayton R0.2500 Mk I 2500 lb/hr. |
| D1782-D1856 | Not fitted | |
| Blower Motors | Type Continuous Rating |
Brush TAM 28/16 Mk V 100 amps 110 volts (11 hp) |
| Compressor Motor | Type Continuous Rating |
Brush TAM 28/12 Mk 111 85 amps 110 volts (9 hp) |
| Exhauster Motors D1520-D1574, D1682-D1701, D1707-D1714 |
Type Continuous Rating |
Brush TAM 28/12 Mk 11 36 amps 110 volts (4½hp) 60 amps 110 volts (6½hp) |
| D1575-D1681 D1715-D1861 |
Type Continuous Rating |
Brush TAM 28/16 MK VI 24-5 amp 110 volts(2½ hp) 50 amps 110 volts (5¼ hp) |
| Combined Pump Motor |
Type Continuous Rating |
Brush TAM 28/16 Mk III 129 amps 110 volts (15 hp) |
| Locomotive Performance |
Maximum Tractive effort Continuous tractive effort Maximum speed Minimum curve negotiable |
62,000 lb at 22-1% adhesion 30,000 lb at 27 m.p.h. 95 m.p.h. 4 chains |