7000 series
 |
 |
 |
 |
| 7706F (Scrapped in March 2011) | 7707F | 7008F | 7709F |
| Series 7000 (4-, 6-, and 8-car fixed formation, car length 20m) A total of 80 cars of the former Series 7000 were introduced between September 1975 and April 1985. The manufacturer was Hitachi, Ltd. The electric cars are of the unit type in which the resistance control device that adjusts the current of the overhead wires for the motor is installed in only one of the two electric cars. The gear ratio was changed from 4.90 to 4.50 for high-speed operation due to the weight reduction of the car body. The main electric motor output is a direct current DC motor ( 130Kw) and the starting acceleration is 2.5Km/h/s at a train ratio of 6M4T. The drive system is a right-angle cardan drive system, and the brake system is a direct solenoid valve type air brake. The safety devices are Sotetsu type ATS, JR East type ATS-P, andEB device. Since 2006, the first cars have been taken out of service and scrapped, and as of July 2011, 24 cars are in operation. |
| (1)Near Hoshikawa Station [2010/01/28]. | (2)Around Tsurugamine Station [2010/01/28]. | (3)Near Tsurugamine Station [2012/02/17]. | (4)Near Nishitani Station [2010/06/17]. |
7000 series
 |
 |
 |
 |
| 7713F | 7753F | 7753F | 7755F |
| New Series 7000 (8- and 10-car fixed formation, car length 20m) The new Series 7000 was introduced from May 1986 to 1989. The design of the 12th and later trains was changed drastically, so they are called “New 7000 Series”. The last two digits of the car number are newly assigned from 51, and it is distinguished as Series 7050 or Series 7000-50. The main controller is a Hitachi VVVF inverter controller, the main electric motor is a Hitachi cage type three-phase AC induction motor ( 180KW), and the power transmission is the traditional Sotetsu right-angle cardan drive system. The train MT ratio is 6M4T. |
| (1)Near Nishitani Station [2010/06/17]. | (2)Near Kashiwadai Station [2010/04/08]. | (3)Near Kashiwadai Station [2010/04/08]. | (4)Near Tsurugamine Station [2012/02/17]. |
8000 series
 |
 |
 |
 |
| 8701F | 8708F | 8709F | 8712F |
| Series 8000 (10-car fixed formation, car length 20m) Series 8000 was manufactured from 1990. The right-angle cardan drive system, which is a Sotetsu tradition, unique disc brakes that can be seen from the outside, pantographs installed on the electric cars, car bodies and electrical components are all manufactured by Hitachi. The main control system is a full-scale VVVF inverter control system using GTO elements based on the results of the new 7000 Series, and the ratio of cage-type three-phase AC induction motors ( 150KW) in the main electric motors has been increased. The electric cars consist of two units, with the MOHA 8100 type equipped with a VVVF inverter controller and the MOHA 8200 type equipped with a compressor and other auxiliary equipment. The train MT ratio is 6M4T. |
| (1)Around Tsurugamine Station [2012/02/17]. | (2)Around Tsurugamine Station [2010/01/28]. | (3)Near Tsurugamine Station [2012/02/17]. | (4)Around Tsurugamine Station [2010/01/28]. |
9000 series
 |
 |
 |
 |
| 9702F | 9703F | 9704F | 9707F |
| Series 9000 (10-car fixed formation, car length 20m) Series 9000 was introduced in 1993. The main control system uses the 1C8M system, in which a single VVVF inverter controller controls eight main electric motors, and each car is equipped with four 180kw cage-type three-phase AC induction motors. The starting acceleration is 3.0 km/h/s, the maximum speed is 120 km/h, and the maximum operating speed is 100 km/h. |
| (1)Near Futamatagawa Station [2010/04/06]. | (2)Near Nishitani Station [2010/06/17]. | (3)Near Tsurugamine Station [2012/02/17]. | (4)Near Kashiwadai Station [2010/04/08]. |
10000 series
 |
 |
 |
 |
| 10503F (manufactured in 2005) | 10507F (manufactured in 2005) | 10507F (manufactured in 2005) | 10508F (manufactured in 2007) |
| Series 10000 (8- and 10-car fixed formation, car length 20m) The Series 10000 was designed and manufactured based on the JR East E231 Series and started commercial operation on February 24, 2002. The main controller is a VVVF inverter control system using IPM-IGBT elements manufactured by Mitsubishi Electric Corporation, and four cage-type three-phase AC induction motors ( 95KW) are installed in each electric car. A total of 70 cars, consisting of three 10-car and five 8-car trains, were manufactured between 2001 and 2007. |
| (1)Around Tsurugamine Station [2012/02/17]. | (2)Near Futamatagawa Station [2010/04/06]. | (3)Near Nishitani Station [2010/06/17]. | (4)Around Tsurugamine Station [2010/01/28]. |
11000 series
 |
 |
 |
|
| 11901F (manufactured in 2009) | 11903F (manufactured in 2010) |  |
|
| Series 11000 (10-car fixed formation, car length 20m) Series 11000 started commercial operation on June 15, 2009, based on the design of JR East’s E233 series. The main controller is a Mitsubishi Electric VVVF in verter using IGBT elements , and the main electric motor is a ST-MT75 cage-type three-phase AC induction motor ( 140Kw). The operating equipment was equipped with the first glass cockpit-type LCD driver’s cab, and the TIMS (Train Information Management System), which displays speedometer, voltmeter, brake pressure gauge and other information necessary for operation on the LCD. Two 17-inch horizontal LCD infotainment displays (Sotetsu Infovision System), the first of their kind for Sotetsu, are installed above each door, displaying information on stops, transfers, and the status of trains on other companies’ lines. Sotetsu is currently constructing a direct link with East Japan Railway. In order to prepare for the future direct connection, this train is equipped with ATS-P type safety devices, EB devices (emergency train stopping devices), TE devices ( emergency train protection devices), and spatial wave train radio antennas, etc., to JR East specifications. |
| (1)Around Tsurugamine Station [2010/01/28]. | (2)Near Kashiwadai Station [2010/04/08]. | |
20000 series
 |
 |
 |
 |
| Series 20000 (10-car fixed formation, car length 20m) The Series 20000 is the first aluminum standard-type train developed and manufactured by Hitachi in 27 years since the Series 8000, and is based on the “A-train” concept as a new train for the Sotetsu and Tokyu lines. The basic configuration is based on an aluminum double-skin structure, a completely self-supporting module interior, and modules fastened to mounting rails integrally formed from hollow extrusion mold material. The power consumption is reduced by the VVVF inverter control system with a new SiC element and high-efficiency electric motor, and the interior lights and lamps are LED to reduce power consumption as well. |