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Power Line System over Den’en-toshi Line near Miyamae-daira Station

Most commuter trains in Tokyo use 1500V DC. I often see stacked-dish-shaped insulators on power system. This power line system uses bell-shaped insulaters, too. I do not know if there are some design rules or not.

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Uploaded on October 17, 2016
Taken on November 29, 2015