Backup Pantograph on Nanbu Line E233 Series
With pregress of semiconductor technology, the designers of E233 series could reduce the power consumption. But they decided to improve reliability and safety. Equipments of E233 series have redundancy, and body was reinforced. The extra mass of the body increased power consumption, but it was small.
This photo shows the roof of the second car of Nanbu Line E233 series. The car has two pantographs and one is folded. The folded one is a backup.
Backup Pantograph on Nanbu Line E233 Series
With pregress of semiconductor technology, the designers of E233 series could reduce the power consumption. But they decided to improve reliability and safety. Equipments of E233 series have redundancy, and body was reinforced. The extra mass of the body increased power consumption, but it was small.
This photo shows the roof of the second car of Nanbu Line E233 series. The car has two pantographs and one is folded. The folded one is a backup.