Tokyo Metro 02 series

The Tokyo Metro 02 series is a Japanese city commuter electric multiple unit operated by the Teito Rapid Transit Authority and its successor Tokyo Metro from October 1988 to March 2024.
==History==
The 02 series was conceived in 1988 as a new train that would be put into service on the TRTA Marunouchi Line; at the time, the rolling stock on the line consisted of thirty-year old 500 series sets, and a new train had to be made to replace them at some point. Following in the success of the 01 series sets used on the Ginza Line, the 02 series sets were constructed in the 01 series sets's image.
Eight batches of sets were produced from 1988 to 1996 and put into service on the TRTA Marunouchi Line from 17 October 1988. When the TRTA was dissolved in 2004, ownership of the 59 sets was handed over to Tokyo Metro. Withdrawals of the sets commenced in 2018, being replaced with Tokyo Metro 2000 series sets starting in 2019; the six three-car sets were withdrawn on 26 August 2022. The last set, 02-101, was withdrawn on 31 March 2024, putting an end to the thirty-five year service lives of the sets. 
==Design==
The 02 series uses a fairly modern design with an unpainted body made of an extruded aluminum alloy. Metal inert gas welding is used to improve quality of construction and lower costs.
==Specifications==
Construction is of an extruded aluminum alloy. Cars are 18 meters long, 2.78 meters wide and 3.495 meters high. Sets 02-601 to 02-619, when originally manufactured, used the same gate turn-off thyristor chopper system as used on the 01 series sets; the systems were produced by Mitsubishi, Hitachi and Toshiba and produced a high-pitched whine that steps up in pitch. The last set equipped with the original GTO chopper system was set 02-607, which was refurbished in March 2014.
Sets 02-620 and onward utilize more modern three-level insulated gate bipolar transistor variable frequency drives produced by a myriad of manufacturers; sets 02-620 to 02-642 and sets 02-681 to 02-686 use three-level IGBT drives produced by Mitsubishi which produce a hissing sound that increases in intensity, sets 02-643 to 02-649 use three-level IGBT drives produced by Hitachi that produce a shrill sound and sets 02-650 to 02-653 use three-level IGBT drives produced by Toshiba which produce a high-pitched squealing noise.
Sets 02-601 to 02-619 underwent a program of refurbishment from 2009 to 2014, with various improvements including the changing of the roller-blind destination indicators to three-color LED screens, the changing of the sets' livery and the addition of LCD in-car route maps among other improvements. One of the most apparent changes was with the sets' IGBT systems and traction motors; all 20 sets had their GTO chopper systems exchanged for IGBT systems produced by Toshiba, in addition to permanent magnetic synchronous motors which produce a very distinctive sound.
Set 02-602 underwent another period of refurbishment some time in 2017 which replaced its halogen headlights with smaller LED fixtures, and new IGBT systems also produced by Toshiba which produce a distinctive hissing sound. Car 02-202 of the same set has a similar IGBT system also produced by Toshiba which produces a slightly different sound; to the untrained ear, both IGBT drives may sound almost identical.
==Preservation==
The following 02 series cars have been preserved:
Car number	Manufacturer	Date manufactured	Date retired	Previous sets	Location 	Notes
02-151 	Kinki Sharyo	February 1995 	May 2019 	02-151 	FEATI University, Manila, Philippines	Used for training purposes
02-251 	Kinki Sharyo	February 1995 	May 2019 	02-151 	FEATI University, Manila, Philippines	Used for training purposes
==References==
*Wikipedia.org
Category:Tokyo Metro trains
Category:Electric trainsets
Category:TRTA trains
Category:Kawasaki locomotives
Category:Kinki Sharyo locomotives
Category:Nippon Sharyo locomotives
Category:Tokyu Car locomotives
Category:Built in 1987