200705N700系Z0編成 試運転
This is the trainset I encountered while it was conducting a test run during my trip to Kyoto in May 2007. Photographed at Kyoto Station.
**Description of the Z0 Trainset**
Completed in 2005, this trainset was used to conduct various technical developments and running tests in preparation for the launch of commercial operations for the N700 series. Following the debut of the J0 trainset—a verification test vehicle for the next-generation "N700S" model—the Z0 trainset was retired on February 25, 2019, concluding its approximately 14-year role as a test vehicle.
While prototype trainsets for the earlier 300 series (J0 → J1) and 700 series (C0 → C1) underwent modifications for mass production and were eventually put into revenue service carrying passengers, the Z0 trainset was never used for commercial operations. This was due to significant differences in equipment compared to mass-production models, such as the limited number of power outlets in the passenger cabin, the absence of a dedicated smoking room, and the specifications of the multi-purpose room in Car 11.
**Differences in Specifications from Mass-Production Models**
Headlights: The lens housing was made slightly smaller than that of mass-production models.
Smoking Room: While mass-production models featured windows in the smoking room area from the start, the Z0 trainset lacked windows in this area, as the room had been retrofitted.
Interior Equipment: There were differences in details, such as shallower overhead luggage racks and an analog audio service in the Green Car (whereas mass-production models used a digital system).
**History**
In May 2014, the trainset underwent performance-enhancing modifications to bring it up to the standards of the N700A (1000 series), and its designation was changed to "X0" (though the car numbers remained in the 9000 series). Even after these modifications, it continued to serve as a testbed for developing next-generation technologies, primarily through late-night test runs.
200705N700系Z0編成 試運転
This is the trainset I encountered while it was conducting a test run during my trip to Kyoto in May 2007. Photographed at Kyoto Station.
**Description of the Z0 Trainset**
Completed in 2005, this trainset was used to conduct various technical developments and running tests in preparation for the launch of commercial operations for the N700 series. Following the debut of the J0 trainset—a verification test vehicle for the next-generation "N700S" model—the Z0 trainset was retired on February 25, 2019, concluding its approximately 14-year role as a test vehicle.
While prototype trainsets for the earlier 300 series (J0 → J1) and 700 series (C0 → C1) underwent modifications for mass production and were eventually put into revenue service carrying passengers, the Z0 trainset was never used for commercial operations. This was due to significant differences in equipment compared to mass-production models, such as the limited number of power outlets in the passenger cabin, the absence of a dedicated smoking room, and the specifications of the multi-purpose room in Car 11.
**Differences in Specifications from Mass-Production Models**
Headlights: The lens housing was made slightly smaller than that of mass-production models.
Smoking Room: While mass-production models featured windows in the smoking room area from the start, the Z0 trainset lacked windows in this area, as the room had been retrofitted.
Interior Equipment: There were differences in details, such as shallower overhead luggage racks and an analog audio service in the Green Car (whereas mass-production models used a digital system).
**History**
In May 2014, the trainset underwent performance-enhancing modifications to bring it up to the standards of the N700A (1000 series), and its designation was changed to "X0" (though the car numbers remained in the 9000 series). Even after these modifications, it continued to serve as a testbed for developing next-generation technologies, primarily through late-night test runs.