The is an electric multiple unit

Electric multiple unit

An electric multiple unit or EMU is a multiple unit train consisting of self-propelled carriages, using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a number of the carriages...

 operated by Fukuoka City Transportation Bureau on the Nanakuma Line in Fukuoka

Fukuoka, Fukuoka

is the capital city of Fukuoka Prefecture and is situated on the northern shore of the island of Kyushu in Japan.Voted number 14 in a 2010 poll of the World's Most Livable Cities, Fukuoka is praised for its green spaces in a metropolitan setting. It is the most populous city in Kyushu, followed by...

, Japan.

History

The 3000 series was introduced on 3 February 2005 on the newly opened Nanakuma Line between and . Unlike the 1000 series

Fukuoka Subway 1000 series

The is an electric multiple unit operated by the Fukuoka City Transportation Bureau on the Hakozaki Line and Kūkō Line in Fukuoka, Japan. The trains also inter-run to/from the Chikuhi Line, operated by Kyushu Railway Company .-History:...

 and 2000 series

Fukuoka Subway 2000 series

The is an electric multiple unit operated by Fukuoka City Transportation Bureau on the Hakozaki Line and Kūkō Line in Fukuoka, Japan.- History :The 2000 series was introduced in 1992 ahead of the opening of the Line between Fukuoka Airport and Hakata Station on March 3, 1993...

 trains operated on the Kūkō Line and Hakozaki Line, the 3000 series trains are standard gauge (1,435 mm) and use linear motor

Linear motor

A linear motor is an electric motor that has had its stator and rotor "unrolled" so that instead of producing a torque it produces a linear force along its length...

 propulsion.

Design

The exterior was designed by the German industrial designer Alexander Neumeister

Alexander Neumeister

Alexander Neumeister is a German industrial designer from Berlin. He gained recognition for his designs of the ICE and Transrapid for which he received the German Design Award...

. Each side of the cars is equipped with three pairs of doors. The bodyside is white with a small light-green line which runs from the front along the top of the windows. This represents the ridge of Mount Abura (located in Jōnan-ku

Jonan-ku, Fukuoka

is one of the seven wards of Fukuoka City, Japan. As of November 1, 2004, it had a population of 128,057 people, making up 9.2% of Fukuoka City, with an area of 16.02 km2. At the time of Fukuoka City's official designation as a City in 1972, the area now known as Jōnan-ku was part of the...

, Sawara-ku

Sawara-ku, Fukuoka

is one of the seven wards of Fukuoka, Fukuoka Prefecture, Japan.-Data:*Population: 211,851 people *Area: 95.88 square kilometers -Profile:...

 and Minami-ku

Minami-ku, Fukuoka

is one of the seven wards of Fukuoka City, Japan. As of 2004, it had a population of 247,913 people and an area of 30.98 km2. Its name literally means "south ward." It is bordered by the central, Hakata, Jonan, and Sawara wards of Fukuoka city, and also by the cities of Nakagawa and Kasuga....

, Fukuoka). Muromi River (located in Nishi-ku

Nishi-ku, Fukuoka

is one of the seven wards of Fukuoka City, Japan. Meaning literally "west ward," it is bordered to the east by Sawara-ku, and to the west by Maebaru and Shima. As of 2003, it has a population of 173,813 people and an area of 83.81 km2...

 and Sawara-ku, Fukuoka) is represented by a light blue stripe along the bottom of the train.
The trains are 25% shorter than the 1000 and 2000 series. There is an emergency door at each end of the train.

Equipment

Trainsets consist of four cars, all motored. The trains are equipped with ATO

Automatic train operation

Automatic train operation ensures partial or complete automatic train piloting and driverless functions.Most systems elect to maintain a driver to mitigate risks associated with failures or emergencies....

 and can be operated unmanned, but driver-only operation is used.
The trains use Insulated-gate bipolar transistor (IGBT), a variable-frequency drive system, and LED train destination indicator panels.