接地防雷,grounding and lightning
1)grounding and lightning接地防雷
2)grounding for lightening防雷接地
1.The paper analysised three aspects of proctective grounding,operative grounding andgrounding for lightening aiming at the construction pitfall liable to occurrence during the architectural electromechanical instalment.针对建筑机电安装中建筑接地工作容易出现的施工误区,从保护接地、工作接地和防雷接地三方面进行了分析,并提出了较为合理的做法,以保障使用人员人身财产安全及建筑物的使用功能和寿命。
bined with the actual condition of comprehensive pipe canal in the group that new city zone in the center of Foshan city,it analyzes and introduces the current supply and distribution system design andgrounding for lightening system design of comprehensive pipe canal electrical design in order to perfect and deepens the comprehensive pipe canal electrical design.结合佛山中心组团新城区综合管沟的工程实际情况,详细分析和介绍了综合管沟电气工程中供配电系统设计和防雷接地系统设计,从而完善和深化了综合管沟电气设计。
英文短句/例句
1.Research on Lightning Protection and Grounding System in Qinghai-Tibet Railway Ge-La Segment;青藏铁路格拉段防雷接地技术的研究
2.Monitor building lightningproof grounding & power grounding systems.监督检查建筑物防雷接地和电力接地系统.
3.Discussion About Grounding Resistance of Building Lightning Protection and Electrical System对建筑物防雷接地和电气接地阻值的探讨
4.Improvement of the lighting protect in Sun Mountain Microwave Station of Three Gorges三峡太阳包微波站防雷接地的改进和完善
5.Engineering Application of Grounding Technology for Lightning Protection in Oil Depot Project;防雷接地技术在油库建设工程中的应用
6.The grounding for lighting protection and running maintenance resolving planning of residential quarters weak current system住宅区弱电系统防雷接地及运行维护解决方案
7.Discussed shallowly the fuel gas pipeline enters building"s lightning protection and earth measure浅谈燃气管道进入建筑物的防雷接地措施
8.A new method to lighten protection and grounding to eliminate the pace voltage threat一种消除跨步电压威胁的大楼防雷接地方式
9.Some Thoughts of Lighting Proof and Grounding of High Rise Buildings and Electronic Devices高层建筑物及电子设备防雷接地的几点思考
10.Design and Implementation on Lightning Protection and Grounding System of Main Computer Room in Library图书馆主机房防雷接地系统的设计和实施
11.On the lightening-protection grounding technique in the electromechanical system on highways浅析高速公路机电系统的防雷接地技术
12.Improvement of Grounding Lap Device Preventing Equipment from Lightning and Static Electricity Hazards设备防雷防静电接地搭接装置的改进
13.Code for design of lighting protection and earthing of microwave station微波站防雷与接地设计规范
14.Code for design of lightning protection and earthing of mobile communication base stations移动通信基站防雷与接地设计规范
15.Safe Ground-Connection Design of Lightning-Proof and Anti-Surge Of Wide-Band Generator Rooms Equipments in Communities;小区宽带机房设备防雷和防浪涌安全接地设计
16.Lightning Protection,Electrostatic Prevention and Earth Connection Design of Hydrogen Refueling Station关于汽车加氢站防雷、防静电及接地设计
17.Measures and Test of Lightning Protection and Earthing for Lifts of High-rise Buildings in Guangzhou广州地区高层电梯防雷措施和接地检测探讨
18.Research on Lightning Protection and Grounding Technique in Qinghai-Tibet Railway Transmission Line and Substation;青藏铁路输变电系统防雷及接地技术的研究
相关短句/例句
grounding for lightening防雷接地
1.The paper analysised three aspects of proctective grounding,operative grounding andgrounding for lightening aiming at the construction pitfall liable to occurrence during the architectural electromechanical instalment.针对建筑机电安装中建筑接地工作容易出现的施工误区,从保护接地、工作接地和防雷接地三方面进行了分析,并提出了较为合理的做法,以保障使用人员人身财产安全及建筑物的使用功能和寿命。
bined with the actual condition of comprehensive pipe canal in the group that new city zone in the center of Foshan city,it analyzes and introduces the current supply and distribution system design andgrounding for lightening system design of comprehensive pipe canal electrical design in order to perfect and deepens the comprehensive pipe canal electrical design.结合佛山中心组团新城区综合管沟的工程实际情况,详细分析和介绍了综合管沟电气工程中供配电系统设计和防雷接地系统设计,从而完善和深化了综合管沟电气设计。
3)grounding for lightning防雷接地
1.From three aspects of the basic knowledge of the lightning, the basic principle of the lightning protection, and the modes of and basic requirements for thegrounding for lightning on the communication points, this paper sums up the equipment sgrounding for lightning.从雷电基本知识、雷电防护的基本原则、通信局点的防雷接地方式和基本要求等3个方面,对设备防雷接地作了概述。
2.The factors affecting the resistivity of frozen soils were discussed, and some solutions togrounding for lightning using grounding modules were introduced.为解决青藏铁路沿线冻土地区防雷接地工程问题,针对高原冻土地区的土壤特性,选择与青藏铁路沿线冻土类似的多年冻土地区进行降低接地电阻的模拟试验。
3.Some new methods ofgrounding for lightning protection in tundra to be tested and problems still to be settled are presented.针对雷击过电压的影响因素,在分析格拉段雷暴活动情况及沿线高原冻土地区地质特点的基础上,提出铁路沿线防雷接地工程的实施办法。
4)lightning grounding防雷接地
1.Construction technology oflightning grounding for flank-striking lightning protection of high-rise building and some problems and resolutions in blueprint auditing,designing and constructing are introduced.介绍了在图纸审核和防雷工程的设计、施工中,高层建筑物塑钢门窗防止侧击雷侵袭的防雷接地技术措施与施工工艺、塑钢门窗防雷接地施工中常见的问题及处理办法。
5)grounding for lighting防雷接地
1.At last some other problems needing attention ingrounding for lighting are put forward to ensure the safety of building.从雷击过电压的产生、特点以及所能造成的危害 ,对建筑物防雷设施进行了探讨 ,提出了防雷接地的两种基本形式 ,得出了金属结构接地体的优点。
6)lightning protection防雷接地
1.Discussion of Technologies about the Mobile Communications Base Station Lightning Protection移动通信基站防雷接地技术探讨
延伸阅读
电力系统中性点接地变压器接地电力系统中性点接地变压器接地earthing transformer for neutral groundingd旧n]一x .tong之hongx旧gd一onj旧d一b旧nyoq一j旧d-电力系统中性点接地变压器接地(earthingtransformer for neutral grounding)电力系统中利用接地变压器获得中性点与大地连接，也称中性点辅助变压器接地。当系统中的变压器不具备接人电阻器或接地故障消除器的条件(例如变压器三相绕组为△接线或虽为Y接线但容量不符合要求)时，要利用辅助的变压器提供一个用于接地的中性点。这种变压器应具备零序阻抗低、激磁阻抗大、功率损耗小的特性。绕组为曲折(Z)接线的变压器符合要求，如图1(a)所示。它可以带二次侧绕组，也可以只有一次侧绕组。这种变压器每相由匝数相等的两个串联分绕组组成，每个磁芯上的两个分绕组间以及它们对二次侧绕组的零序互磁为零。很明显，这种变压器的零序电抗XTo只为变压器一次侧绕组的漏电抗Xs，，即XTo-Xs;，而系统中性点与地之间的计算阻抗Z。为Z。一25，+Z。，其中Z。为中性点电阻器或电抗器的阻抗。见图1(b)。2.为激磁阻抗。见图2，YN，d接线的变压器二次侧绕组可以带一定负荷。从过负荷能力考虑已经知道.接YN，d接线的双绕组变压器中性点的接地设备的容t不应超过变压器额定容t的50%.由此可认为，当变压器额定容t按中性点接地设备的容t设计时，允许二次侧绕组带50%额定容t的负荷.还有一种特殊接线的接地变压器和接地设备的组合，是19鲍赫(R.Bauch)发明的，故也称饱鹅变压器，见图3。变压器一次侧中性点直接接地，开口三角形接线的二次侧连接接地设备，这与一次侧中性点接有接地设备是等效的。单相接地时，不对称的电压可分解为对称的正序和零序，磁通也可分解为对应的分量。磁通人m、人。、人.需要极小的激磁电流，并对应于正序电压U.。、U、。、U。。，零序电压UO.对各相是一样的，故三个磁柱中有相同的磁通式，对零序磁通来说，变压器相当一个单相变压器，只不过分裂为3个磁柱和3个绕组，见图3(c)。单相接地时，这种变压器每个分绕组上的电压为少尹z‘一.哟.!|||一下咖l!补丰气l一!{屯犷!{屯享!孟=zl息)一刃川l|拍--l--﹄·图1绕组为曲折(Z)接线的变压器 (a)接线图.(b)零序阻抗图会‘价“相“压，·““”的““是中”点接地“备电流的1/3，即夸。因而变压器的额定功率为3x2‘会‘争即中性点接地设备“率”1.15倍。
