The overhead catenary system is the main facility for power supply in electrified railway.

接触网是电气化铁路的主要供电设备。

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The current collection with a pantograph from an overhead catenary is a key technique for the high speed electrical railway.

弓-网动态受流是高速电气化铁路的关键技术问题之一。

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Research conclusions:According to the research results, the DC 1 500 V rigid suspension overhead catenary system is recommended for the first metro line of Haerbin.

研究结论：根据研究的结果，推荐哈尔滨地铁一期工程正线采用DC 1 500 V架空刚性悬挂。

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Then the second engineer noticed strange movement in the overhead catenary wires above the eastbound train, and hit the emergency brake on his train, Mr. Cahill said.

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The gap between the pantograph, which is the arm on top of the train car that draws power from overhead lines, and the catenary system must remain within a precise distance and tension.

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Contractors have been replacing catenary wires the overhead electric cables that power trains in various spots along the line since 1991, and in some cases replacing original equipment erected in 1907.

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