Internal overvoltage is called switching overvoltage or resonance overvoltage, and it threatens the safe operation of electrical equipment and the personal security of operating personnel.

内部过电压又称操作过电压或谐振过电压，对电气设备的安全运行和操作人员的人身安全构成严重威胁。

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Coal substation is the joint of the electrical network which has many kinds of loads, and high request of security condition.

煤矿变电站作为负荷种类多，安全条件要求高的电力网络连接点，其自动化水平显得尤其重要。

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For fliers, the holidays often present lengthy airport security lines, fast-food temptations and mass scrambles for open electrical outlets.

对旅行者来说，假期意味着在机场排长队等安检，各种快餐诱惑，一群人争夺公用插座。

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For 2003 Eveillard returns with Tyco International (nyse: TYC - news - people ), maker of things ranging from electrical components to security systems--and bedeviled by accounting questions and former chairman Dennis Kozlowski 's indictment.

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The HomePlug AV2 specification is expected to deliver a 5x increase in performance over current HomePlug AV solutions at the application layer to offer significant improvements in whole home coverage to guarantee reliable delivery of throughput intensive applications such as multiple streams of 1080p HD video (and emerging 3D and 4K HD) broadband Internet, Internet gaming and security camera video over existing electrical wiring.

ENGADGET: HomePlug Powerline Alliance reveals features of new HomePlug AV2 spec

Other infrastructure components have been compromised in the past, including a case in which hackers planted potentially disruptive software programs in the U.S. electrical grid, according to current and former national-security officials.

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