Nankai 9000 series
The is an electric multiple unit (EMU) train type operated by the private railway operator Nankai Electric Railway in Japan since 1985. Operations. The 9000 series is used on Nankai Line commuter services singly or coupled with 12000 series EMUs on "Southern Premium" limited express services to provide non-reserved accommodation. Formations. , the fleet consists of five four-car sets (9501 to 9509) and two six-car sets (9511 and 9513), formed as follows. History. The first sets entered service in 1985.