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上传于：2017-11-07

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    188宝金博页面版: 电力论述题（Electric power problems）

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    内容提示： 电力论述题（Electric power problems） Six, discussion questions (10 points per subject, a total of 20 questions) 1 (La3F3002). What is the cause of the malfunction of the load regulating device on the transformer? Answer: the cause of the malfunction of on load voltage regulating device is: (1) the operation power supply voltage disappears or is too low. (2) the motor winding is broken and burned, and the starting motor is out of press. (3) poor contact of interlocking contact. (4) transmission mechanism...

    文档格式：DOCX | 页数：17 | 浏览次数：147 | 上传日期：2017-11-07 01:15:31 | 文档星级：
    电力论述题（Electric power problems） Six, discussion questions (10 points per subject, a total of 20 questions) 1 (La3F3002). What is the cause of the malfunction of the load regulating device on the transformer? Answer: the cause of the malfunction of on load voltage regulating device is: (1) the operation power supply voltage disappears or is too low. (2) the motor winding is broken and burned, and the starting motor is out of press. (3) poor contact of interlocking contact. (4) transmission mechanism tripping and pin falling off. 2 (La3F4004). The advantages of metal oxide arrester protection performance are discussed Answer: metal oxide arrester compared with general valve FZ and FCZ magnetic blow arrester has the following advantages: (1) metal oxide arrester has no series gap, fast action, flat volt ampere characteristic, residual depression, no wave cut. (2) the metal oxide valve plate has the advantages of large flow capacity, small size, small quality and simple structure.

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