低压配电装配小记（Low voltage distribution assembly jot）.docVIP

下载本文档

4
0
约1.87万字
约 17页
2017-07-15 发布于河南
举报
版权申诉

低压配电装配小记（Low voltage distribution assembly jot）.doc

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

低压配电装配小记（Low voltage distribution assembly jot）

低压配电装配小记（Low voltage distribution assembly jot） Low voltage distribution assembly. TXT when you were born, you were crying and people around you were smiling. When youre gone, youre smiling, and the people around you are crying! Like some people need an hour, fall in love with some people only need one day, and forget that a person with life three-phase five wire with color yellow, green, red, light blue, respectively the U, V, W, N protective earthing line double color (PE) Transformer in operation, each phase current of transformer should not exceed the rated current; Maximum unbalance current shall not exceed 25% of the rated current. The transformer should be serviced regularly after operation. In the system of power supply of the same transformer, it is unfavorable to protect the ground and the protection of zero mixing. The rated voltage of the secondary coil of the voltage transformer is usually 100V. The secondary side of the voltage transformer shall not short-circuit at work. Because the short circuit will produce a large short circuit current, it is possible to burn the transformer, for this voltage transformer, the secondary side will install the fuse to protect. The secondary side of the voltage transformer must be grounded. This is to prevent one, the secondary coil insulation breakdown, one high pressure into the secondary side, endanger the safety of the person and equipment. The current transformer is close to the short circuit in the secondary side of the work. The rated current of the secondary coils is usually 5A The secondary side of current transformer shall not be allowed to open while working. The secondary side of the current transformer has to be grounded on one end, preventing the first and second coil insulation from being punctured, and one side high pressure is on the second side. When the current transformer is connected, it should pay attention to the polarity of the first and second coils. Make sure the wiring is correct and reliable