Abstract: A spheroidal graphite cast iron comprising, in mass percentage: 2.8% or more and 3.3% or less of carbon; 2.5% or more and 4.0% or less of silicon; 0.32% or more and 0.40% or less of manganese; 0.020% or more and 0.030% or less of phosphorus; 0.020% or more and 0.035% or less of sulfur; 0.030% or more and 0.050% or less of magnesium; 0.010% or more and 0.050% or less in total of lanthanum and cerium; and 0.0020% or more and 0.0050% or less of calcium, with the balance being iron and inevitable impurities.

Abstract: To present an electric railway power-supply system not requiring vast area for installation, excellent in rapid charge-discharge characteristic, and low in manufacturing cost. At a substation 9 for electric railway having a transformer 3 for receiving power from an alternating-current power line 2, a rectifying device 4 connected to the transformer 3, and a feeder line 5 connected to the rectifying device 4, a nickel hydrogen battery 8 is provided as a direct-current supply facility, and the nickel hydrogen battery 8 is directly coupled to the feeder line 5.

Abstract: To present an electric railway power-supply system not requiring vast area for installation, excellent in rapid charge-discharge characteristic, and low in manufacturing cost. At a substation 9 for electric railway having a transformer 3 for receiving power from an alternating-current power line 2, a rectifying device 4 connected to the transformer 3, and a feeder line 5 connected to the rectifying device 4, a nickel hydrogen battery 8 is provided as a direct-current supply facility, and the nickel hydrogen battery 8 is directly coupled to the feeder line 5.

Abstract: The present invention comprises several different embodiments of wiring systems for connecting terminal end portions of electrical wires. In accordance with a first embodiment, two terminal end portions of the wires are disposed adjacent to each other, one being fixed and one being movable, and an aperture is formed within a support panel to which the wires are secured. A pivotable lid or cover uncovers or closes the aperture so as to provide access to the terminal ends of the wires, and to close the aperture once connection of the wires has been achieved. In accordance with a second embodiment, the lid or cover is slidable upon the support panel and is connected to the movable wire such that upon slidable movement of the lid or cover, the movable wire is moved so as to connect with or be disconnected from the other wire.