Zefiro  
Power type  Electric 

Designer  Bombardier 
Builder  Bombardier 
Build date  2009 
UIC classification  BoBo2'2'2'2'BoBoBoBo2'2'2'2'BoBo (300km/h 8 car version)^{[1]} 
Gauge  1435 mm 
Wheel diameter  915/835 mm (new/worn)^{[1]} 
Wheelbase  17.375 m (between bogie centres)^{[1]} 
Length  26.390 m (driving car)^{[2]} 24.775m (intermediate cars)^{[2]} 
Width  2.9 or 3.4 m ^{[1]}^{[2]} 
Height  3.890 m^{[1]} 
Electric system(s)  1.5 & 3 kV DC, 15 & 25 kV AC (any of)^{[1]}^{[3]} 
Current collection method  Overhead Caternary 
Top speed  250 to 380 km/h^{[3]} 
Train brakes  Electrodyanamic (regenerative) and electropneumatic disc^{[1]} 
The Bombardier Zefiro trains are a family of high speed and very high speed passenger trains with top operating speeds from 250 km/h upwards. The trains are the design of Bombardier Transportation.
The Zefiro 250 with a top operating speed of 250 km/h, wholly manufactured in China, and the Zefiro 300 with a top operating speed of 300 km/h, and the Zefiro 380 make up this family of trains.
Contents 
Bombardier transportation and its predecessor companies produced a variety of high speed trainsets^{[4]} , as part collaborations with other conglomerates, such as the IntercityExpress family of locomotives^{[5]} (Germany), AVE Class 102^{[5]}, RENFE class 130 (Spain), ICN (Switzerland), the Acela express^{[5]} (USA), and parts of the TGV Duplex, Eurostar, Thalys, and ETR 500^{[5]} trainsets (Europe various). Additionally the company has independently produced high speed trainsets for specific markets, such as CRH1, XinShiSu tilting train^{[5]} (China), Regina (Sweden) and BM71 (Norway).^{[6]}
In November 2005 Bombardier launched its general solution Zefiro single deck trains for high speed rail lines, available in 4, 8,12 or 16 car sets^{[4]}, capable of being configured for a variety of supply voltages^{[3]} , and produced in either standard (2.9m) or wide (3.4m) widths.^{[2]}
The Zefiro trainsets are a conventional (noninter coach articulared) single deck electrical multiple unit high speed train, consisting of powered (motor car) and unpowered cars (trailer cars), with motorized power cars at either end (motorized end car).^{[4]} Car bodies are of aluminium construction^{[note 1]} with customisable open plan.^{[7]}^{[8]}
Trains are made up of 4 car units, each four car unit contains a transformer and its own power supply. Typically the end cars have powered bogies, with the two middle cars being unpowered. The pantograph is located on one of the unpowered cars.^{[1]}
The specifications for all current designs (2009) describe asynchronous three phase motors, with forced air cooling.^{[1]}^{[7]}, however bombardier offers the option of permanent magnet synchronous motors^{[9]} first tested in practise on modified Regina trains in 2008 on the "Green train" ("Gröna Tåget" swedish)^{[10]} which it groups in its "ECO4" energy saving technologies^{[11]}
Zefiro 250  

Constructed  2009 
Formation  8 or 16 cars (sleeper or seated)^{[7]} 
Capacity  480 beds, 16 luxury beds, 122 seats (16 car sleeper version)^{[7]} 
Specifications  
Car body construction  Stainless steel carbody in wide profile^{[7]}^{[note 2]} 
Train length  216 m (8 cars), 429 m (16 cars)^{[7]} 
Width  3.4 m^{[1]}^{[note 2]} 
Maximum speed  250 km/h^{[7]} 
Weight  859 t (16car trainset)^{[7]} 
Acceleration  > 0.6 m/s²^{[7]} 
Deceleration  > 0.6 m/s² 
Power output  13.5 MW (for propulsion)^{[7]} 
Electric system(s)  25 kV AC^{[7]}^{[note 2]} 
Bogies  Regina type ("FLEXX link") with 2.7 m wheelbase^{[7]} 
Multiple working  Possible for two 8car trainsets, not possible for 16car trainset^{[7]} 
The first variant of the Zefiro concept produced was a series of 20 16 car EMU sleeper trains produced by Bombardier's joint venture Sifang Power (Qingdao) Transportation (BSP) being delivered from 2009. These trains were the first high speed trains license manufactured in China as well as the highest speed sleeper trains at that time.^{[5]}
Starting acceleration is greater than 0.6 m/s², with a 16 car
train weight of 859 t and an axle load of 16.5 t, bogie type is
that found on the Regina (train) with 2.7 m wheelbase with
63% of axles motorized.^{[7]}
Zefiro 300  

Formation  up to 16car^{[7]} 
Capacity  600 seats (8 car)^{[7]} 1,200 seats (16 car)^{[7]} 
Specifications  
Car body construction  Aluminium carbody, UIC profile^{[7]} 
Train length  202 m (8 car train), 402 m (16 car train)^{[7]} 
Width  2.9 m 
Maximum speed  300 to 360 km/h^{[7]} 
Acceleration  > 0.6 m/s²^{[7]} 
Deceleration  > 0.6 m/s² 
Power output  8.8 MW (8 car train @300 km/h)^{[7]} 
Bogies  "FLEXX speed", 2.85 m wheelbase^{[7]} 
Multiple working  Possible for two 8car trainsets, not possible for 16car trainset^{[7]} 
The Zefiro 300 type is intended for european operations, with a
UIC profile, an capable of being
fitted for use on all four european electrification schemes (1.5
& 3 kV DC, 15 & 25 kV AC). Bogies are FLEXX type with 2.75m
wheelbase with 50% motorized, starting acceleration is >0.60
m·s^{−2} an axle load of ~17 t.^{[7]}
Two 8 car sets can work in multiple.^{[7]}
Zefiro 380  

Entered service  2012^{[3]} 
Formation  8 or 16 car^{[7]} 
Capacity  664 seats (max) 8 car^{[7]} 1,336 seats (max) 16 car^{[7]} 
Specifications  
Car body construction  Aluminium carbody, wide profile^{[7]} 
Train length  215 m (8 car) 415 m (16 car)^{[7]} 
Width  3.4 m 
Maximum speed  380 km/h^{[7]} 
Weight  934 t^{[7]} 
Acceleration  > 0.48 m/s²^{[7]} 
Power output  20 MW (16 car @380 km/h)^{[7]} 
Bogies  "FLEXX speed" with 2.7 m wheelbase^{[7]} 
Multiple working  Possible for two 8car trainsets, not possible for 16car trainset^{[7]} 
In september 2009 Bombardier announced an order for 80 Zefiro 380 very high speed trains by the Chinese Ministry of Railways (MOR) to be produced at Bombardier's joint venture Sifang (Qingdao) Transportation Ltd. The order of twenty 16 car sets and sixty 8 car sets was estimated to be worth 27.4 billion RMB (approx 2.7€ billion or $4 billion. The value of Bombardiers share is estimated at 1.3€ billion. ^{[12]}^{[13]}
A 16 car set has ~20 MW power, with 50% bogies (FLEXX type with 2.7 m wheelbase) motorized, a starting acceleration of >0.48 m·s^{−2}, with a weight of 948 t, and an axle load of ~17 t.^{[7]} Two 8 car sets can work in multiple.^{[7]}
Siemens Velaro competitor of similar design.

