Eidan 500 series

The Eidan 500 series (and the related 300, 400 and 900 series) are Japanese city commuter electric multiple units operated by the Teito Rapid Transit Authority (Eidan) from January 1954 to July 1996.
==History==
The 500 series was a completely new design that was conceived in 1953 as a new train that could be used on the then-new TRTA Marunouchi Line. The first set, 1, entered service on 20 January 1954.
As the 500 series sets' age began to show, they were slowly replaced by 02 series sets starting in October 1988; the sets were used on the Hōnachō Branch Line of the Marunouchi Line in their final years. The last 500 series set, set 587, was retired from regular service on 18 July 1996; it was retired completely on 20 July 1996 and was replaced by a 02 series set shortly after. After their lives on the TRTA, many cars were exported to Buenos Aires for use on the Buenos Aires Underground.
14 cars are preserved around Japan. In 2017, four cars were returned from Buenos Aires to Japan to be restored as a nostalgia train "for educational purposes", with a three car set and an additional car; the three car set comprises random cars picked out from random sets (771, 734, 584), with the fourth car (752) being used as a reserve car. The set is operational and is used only on special occasions.
==Design==
The 500 series sets' design is standard for many sets of the time. The trains had a very distinctive sine wave design on the sides.
==Specifications==
Construction is of stainless steel. Cars are 18 meters long, 2.79 meters wide and 3.49 meters high. All sets use resistor control, which was standard for the time.
The 500 series nostalgia train is unique in that all three cars are restored to represent its use in different time periods; car 771 is restored to "Argentina specifications", car 734 is restored to "retirement specifications" and car 584 is restored to "as-built specifications". All these specifications pertain to the car's interior; car 771's interior was restored to look like it did during the times the cars ran on the Buenos Aires Underground with Spanish posters and route maps all around, car 734's interior was restored to look like it did in the sets' final years on the TRTA Marunouchi Line and car 584's interior was restored to look like it did when the trains were originally delivered in 1954.
==References==
Category:TRTA trains
Category:Electric trainsets
Category:Hitachi locomotives
Category:Kawasaki locomotives
Category:Kinki Sharyo locomotives
Category:Kisha Seizō locomotives
Category:Nippon Sharyo locomotives
Category:Teikoku Sharyō locomotives
Category:Tokyu Car locomotives
Category:Built in 1953