SD001 System Data for Mechanical and Electrical Coupling of Rail Vehicles
(PDF Version)

Part 1 - Mechanical Coupling system data

1.1 - Index of Mechanical Interconnection Systems

1.1.1 - By System Reference Number

SYSTEM	DESCRIPTION	TYPICAL OR INITIAL APPLICATION
M001	Screw coupling system
M002	Instanter coupling system
M003	Drophead buckeye automatic coupling system
M004	Alliance coupling system
M005	Compact coupling system
M006	Tightlock coupling system
M007	Automatic latched coupling system
M008	Semi-permanent (bar) coupling system
M009	Swinghead coupling system

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1.1.2 - By Vehicle Type and Class

1.1.2.1 - Locomotives

SYSTEM	Description	Vehicle class(es)
M001	Screw both ends	Cl08, 09, 20, 31, 33/0, 33/2, 37, 47, 56, 57/0, 57/6, 58, 59, 60, 66/4, 66/5, 66/6, 66/9, 86, 87, 90/1 and 92
M003	Drophead buckeye automatic both ends	Cl33/1, 73, 90/0, and 91
M007	Automatic latched type 12 from Dellner	Cl57/3
M009	Swinghead coupler both ends	Cl66/0, 67

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1.1.2.2 - Diesel and Diesel Electric Multiple Units

SYSTEM	Description	Vehicle class(es)
M001	Screw both ends	Cl121
M005	BSI cab ends	Cl142, 143, 144, 150/0, 168 and 170
M005	BSI all ends	Cl150/1, 150/2, 153, 155, 156, 158, 159, 165 and 166
M003	Drophead buckeye automatic cab ends, Alliance intermediate ends	Cl205 and 207
M007	Automatic latched type 330 from Scharfenberg at cab ends	Cl175 and 180
M007	Automatic latched type 12 from Dellner at cab ends	Cl220, 221 and 222

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1.1.2.3 - Electrical Multiple Units

SYSTEM	Description	Vehicle class(es)
M003	Drophead buckeye automatic cab ends, Alliance intermediate ends	Cl312, 411, 412, 421, and 423
M006	Tightlock cab ends.	Cl313, 314, 315, 317, 318, 319, 320, 321, 322, 323, 334, 357, 365, 455, 456, 465, 466, 507 and 508
M003	Drophead buckeye automatic cab ends.	Cl325 and 442
M007	Automatic latched type 10 from Scharfenberg cab ends.	Cl332
M007	Automatic latched type 10 from Dellner cab ends.	Cl333
M007	Automatic latched type 12 from Dellner at cab ends.	Cl350, 360, 375, 376, 377, 390, 444 and 450 (390 at “non-standard” height)
M006	AAR type from Scharfenberg cab ends.	Cl458
M007	Automatic latched type 330 from Scharfenberg cab ends and between cars 4 and 5.	Cl460
See 1.1.3 below	Wedgelock cab ends.	Cl483 (Isle of Wight stock)

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 1.1.2.4 - Coaching Stock

SYSTEM	Description	Vehicle class(es)
M001	Drawhook only cab end	Mk2 DBSO
M003	Drophead buckeye automatic non cab end
M003	Drophead buckeye automatic sub set ends	Cl488 subsets
M003	Drophead buckeye automatic both ends	Cl489
M001	drawhook front end	Mk3 DLV (also known as DVT)
M003	Drophead buckeye automatic rear end
M003	Drophead buckeye automatic both ends	All other Mk1, 2 and 3 locomotive hauled passenger vehicles
M001	Drawhook front end	Mk4 DLV (also known as DVT)
M006	Tightlock rear end
M003	drophead buckeye automatic, non gangwayed end,	Mk4 TOE
M006	Tightlock (not EMU compatible)
M006	Tightlock (not EMU compatible) both ends	Mk4 passenger vehicles

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1.1.3 - Miscellaneous

1.1.3.1 - Cab end HST power cars

Connection points are fitted to the cab ends of HST power cars. The connection points allow rescue and assistance by other HST sets and locomotives by means of adaptor couplers carried on the vehicle.

1.1.3.2 - Wedgelock couplers

Wedgelock couplers are used on some London Underground trains and Cl483 Isle of Wight trains (which are ex London Underground trains).

1.1.3.3 - AAR type E and F couplers

AAR type E and F couplers are used on certain types of intermediate freight vehicles which operate in block formation.

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1.1.3.4 - EMU centre couplers

Centre buffer and three link couplers are used on intermediate ends of vehicles of certain types of EMU and other vehicles not used for passenger services. Some vehicles with this type of coupler are subject to imminent withdrawal.

1.2 - Freight vehicles

The freight wagon TSI is likely to mandate the fitment of screw couplings to wagons, or to the outer ends of fixed formation rakes of wagons. Currently the majority of freight vehicles are fitted at both ends with:

1. a drawhook and Screw coupler
2. a drawhook and Instanter coupler (some older vehicles may still have 3 link chain type coupling)
3. a drawhook and international Screw coupler (for vehicles used in international traffic)
4. drophead buckeye automatic couplings
5. Swinghead couplings
6. Rotary head couplers
7. AAR type E and F couplers.

In addition:

8. some freightliner vehicles are fitted with Screw couplers at both outer ends of vehicle rakes and bar couplers at the intermediate positions
9. FSA/FTA freightliner vehicles are fitted with standard Screw couplers at both outer ends of vehicle rakes with Screw couplers at lower height at the intermediate positions
10. detailed listings of coupler types fitted to individual vehicles can be obtained from the Rolling Stock Library, Schlumberger Sema, Room 103, Furlong House, Queens Drive, Nottingham NG2 1AL.

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1.3 - On-track machines

The majority of on-track machines (those vehicles of mobile rail plant which can travel outside of a possession) are fitted with draw hook and screw couplings. There are some vehicles which are intended to travel alone only and have no coupling arrangement.

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1.4 - Additional data

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Part 2 - Electrical Connector system data

2.1 - Index of Electrical Interconnection Systems

2.1.1 - By System Reference Number

Note: * class 20, and 37 vary between E002 and E029.

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2.1.2 - By Vehicle Type and Class

2.1.2.1 - Locomotives

Note: * class 20, and 37 vary between E002 and E029.

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2.1.2.2 - Diesel and Diesel Electric Multiple Units

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2.1.2.3 - Electrical Multiple Units

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2.1.2.4 - Coaching Stock