1)step voltage跨步电压
1.This paper introduces the concept of current non-uniformity coefficient, and discusses the characteristics of this coefficient, and analyzes the current distribution, ground resistances, and maximum step voltages of different electrode shapes in Laocheng.依据三沪直流蔡家冲老城接地极场地条件和土壤物理特性,拟定电极的不同布置形状,通过引进电流不均匀系数的概念,论述电流不均匀系数与分析老城极址不同形状电极的电流分布、接地电阻、最大跨步电压等技术特性,对老城接地极极环形状及布置方案做出优化论证。
2.Safety assessment of grounding systems is a testing that the actual maximum touch and step voltages are computed and compared to the maximum allowable(safe) touch and step voltages.接地系统的安全评估是人体实际所承受的最大接触电压和跨步电压与最大的安全允许电压进行比较的测试。
3.The results show that both step voltage and grounding resi.结果表明,几种方案中跨步电压和接地电阻满足设计要求,但都存在接地极附近土壤温升过高的现象。
英文短句/例句
1.Discussion on the Touching Voltage and Walk Voltage Resulting from the Protective Earthing;对保护接地产生的接触电压和跨步电压的探讨
2.FDTD Analysis of the Step-voltages near a Grounding Electrode under Impulse Current Discharge冲击泄流时接地体附近跨步电压的FDTD分析
3.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
4.piezoelectric linear stepping motor压电直线步进电动机
5.alternator field voltage同步发电机励磁电压
6.high voltage wound asynchronous motor高压卷线异步电动机
7.The voltage had been reduced in stages.电压一直在逐步地降低。
8.Reactive power and voltage optimization of UHV AC synchronized power grid特高压交流同步电网的无功电压优化
9.Step by Step Heating Furnace Hydraulic Cync and Electro Hydraulic Proportional Control System步进炉液压同步及电液比例控制系统
10.synchronous booster同步增压机，增压交流发电机
11.Study on the Mechanism of the Response of the Transmembrane Voltage Induced by Pulsed Electric Field;脉冲电场作用下细胞跨膜电压变化的机理研究
12.Study and Calculation of Transmembrane Voltage Induced by the External Electric Field;外电场作用下细胞跨膜电压的计算研究
13.Operation Analysis of High Voltage Asynchronous Motors in Chongqing Power Plant重庆发电厂高压异步电动机运行分析
14.Slip steady economy power research for induction motor异步电动机降压恒转差节电效果分析
15.Study on Precision Stepping Driving Technology Based on Piezoelectric Pump and ER-Valve Hydraulic System压电泵/电流变阀液压精密步进驱动技术的研究
16.The Losses of the Transformer-Induction Motor System at Over-voltage过电压对变压器－异步电机系统能耗的影响
17.Galloping Computation and Analysis for Long Multi-span Bundle Conductors of Power Transmission Lines;大跨越高压输电线路分裂导线覆冰舞动的研究
18.Study on Nonlinear Galloping Theory for Long Conductors of Power Transmission Lines;大跨越高压输电线路非线性舞动理论研究
相关短句/例句
Get an electric shock due to walk voltage跨步电压触电
3)electric shock on step voltage跨步电压电击
4)pulse step voltage脉冲跨步电压
5)touch voltage and step voltage接触电压和跨步电压
1.In this paper, the authors give us definitions about safe voltage, ground-connecting current, touch voltage and step voltage in details and also make a conclusion that it is the necessity of ground-connecting protection to electrical equipment.本文详细分析了人体的安全电压、接地电流和对地电压、接触电压和跨步电压, 论述了电气设备的接地保护必要性。
6)Step potential跨步电势
1.It is indicated that the step potential on the surface of the epitaxial grounding grid meets the specialty standard as long as the depth of burying of the grid is reasonable.计算和实践表明,只要接地极埋设深度适宜,外延接地网表面的跨步电势仍然能够满足专业技术规范的安全要求。
2.The touch potential and step potential are both beyond design specification.若厂区内发生不对称接地短路故障,则可能入地电流过大,造成设计人工接地装置接地电阻值大于A类电气装置允许接地电阻值上限;且校核局部接触电势和跨步电势超出设计规范要求。
延伸阅读
跨步电压 在接地网散泄电流的情况下，人活动在接地网中或其附近时，两脚之间所承受的电压。电流通过接地装置（见接地）时，大地表面会形成以电流入地点为中心的分布电位。地面上约一步距离的两点间的电位差称为跨步电位差（电工行业习称跨步电势）。人走近接地装置时，人两脚接触地面约一步距离的两点所承受的电压称为跨步电压。如图所示，距电流入地点越近，跨步电压越高。跨步电位差主要产生于电力系统的接地短路电流。在雷电流通过接地装置时，也会产生跨步电位差。为了避免跨步电压对人身的伤害，接地网外缘应该闭合，外缘各角应做成圆弧形。如仍不能满足跨步电位差的要求，可敷设水平均压带。接地网边沿经常有人通过的地方，可铺设砾石或沥青路面，也可敷设均压带。中国有关标准规定，在大接地短路电流系统发生单相接地或同点两相接地时，地面水平距离0.8m两点间的电位差应满足下式的规定式中Ec为跨步电位差(V)，ρ为人脚站立处的地表土壤电阻率(Ωm),t为接地短路电流的持续时间(s)。在小接地短路电流系统中发生单相接地时，一般并不迅速切除故障，接地电流的持续时间比较长，所以须把跨步电位差的允许值降低，此时跨步电位差应满足下式的规定ES＝50＋0.2ρ条件比较恶劣的场所,如矿井和水田,Ec的允许值应适当降低。
