British Rail Class 305

British Rail Class 305
British Rail Class 305
	Class 305 unit at York
In service	1959–2002
Manufacturer	British Rail
Order no.	30566 (BDTSOL, 305/2, as built); 30567 (MBSO, 305/2); 30568 (TSOL, 305/2); 30569 (DTSO, 305/2); 30570 (BDTSO, 305/1); 30571 (MBSO, 305/1); 30572 (DTSO, 305/1);
Built at	Holgate Road, York (305/1); Doncaster Works (305/2);
Family name	BR First Generation EMU
Replaced	Steam locomotives and carriages
Constructed	1959–1960
Refurbished	1983–1984 (305/2 facelift)
Number built	71
Number scrapped	71
Successor	Class 322 ; Class 323
Formation	Class 305/1 ; BDTSO+MBS+DTSO ; Class 305/2 As Built; BDTSOL+MBSO+TCsoL+DTS; Class 305/2 Facelifted ; BDTCOL+MBS+TSOL+DTSO ; Class 305/3 ; BDTSO+MBS+TCsoL+DTSO
Diagram	As Built ; Class 305/1 413 MBSO; 436 BDTSO, DTSO; ; Class 305/2 405 MBSO; 437 DTS; 438 BDTSOL; 455 TCsoL; ; TOPS Codes ; Class 305/1 E204.0A MBSO; EE209.1B DTSO; EF205.0A; ; Class 305/2 ; As Built ED205.1B MBS; EE210.0A DTS; EF206.0A BDTSOL; EH302.1B TCsoL; ; Refurbished ; ED216.0A MBSO; EE220.0A DTS; EF304.0A BDTSOL; EH223.0A TSOL;
Design code	AM5
Fleet numbers	Class 305/1: 305401-305452; 75462-75513 BDTSO; 61429-61480 MBS; 75514-75565 DTSO; ; Class 305/2: 305501-305519; 75424-75442 BDTSOL later BDTCOL; 61410-61428 MBS later MBSO; 70356-70374 TCsoL later TSOL; 75443-75461 DTS later DTSO;
Capacity	272 seats (305/1), ; 344 2nd + 19 1st (305/2)
Operators	British Rail; Network SouthEast; ScotRail (British Rail); First North Western; ScotRail (National Express);
Depots	Ilford EMD; East Ham EMD; Glasgow Shields Road; Longsight Electric;
Specifications
Car body construction	Welded steel and sprayed asbestos
Train length	199 ft 6 in (60.81 m) (305/1); 265 ft 8+1⁄2 in (80.99 m) (305/2)
Car length	63 ft 6+1⁄2 in (19.37 m)
Width	9 ft (2.74 m)
Height	12 ft 7 in (3.835 m)
Doors	Slam Door
Articulated sections	3 or 4
Wheelbase	46 ft 6 in (14.173 m) (bogie centres); 8 ft 6 in (2.59 m) (bogies) ;
Maximum speed	75 mph (121 km/h)
Weight	119 t (117 long tons; 131 short tons) (305/1); 154 t (152 long tons; 170 short tons) (305/2);
Traction motors	4 × GEC WT380 of 153 kW (205 hp)
Auxiliaries	240 V from the tertiary winding of the main transformer for heating and for a Westinghouse charger feeding 110 V dc for lighting and battery charging
Power supply	Mercury-arc rectifiers (later replaced with silicon diode)
HVAC	Electric
Electric system(s)	25 kV 50 Hz AC Overhead; (and 6.25 kV until 1983)
Current collector(s)	Pantograph
Bogies	Gresley ED5 (MBS); Gresley ET8 (DTS); Gresley ET5 (BDTS, BTDC, TS; compound bolster;
Braking system(s)	Westinghouse EP air
Safety system(s)	AWS
Coupling system	Drophead
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The British Rail Class 305 was an alternating current (AC) electric multiple unit (EMU). Under the pre-1973 British Rail numbering system, the class was known as AM5; when TOPS was introduced, it became Class 305.