Effective shielding can be achieved by reducing the breakdown probability of the gap between shielding wire and phase conductor.
提高避雷线保护的有效性可以通过减小避雷线—相导线间隙击穿概率来达到。
It is provided with easily replaceable wire support members or protective caps to enhance convertibility from a single phase delivery configuration to a three phase delivery configuration.
设置有容易替换的电线支承件或保护帽，以提高从一单相传输结构到一三相传输结构的可变换性。
Experiments show that the dual phase structure suitable to wire drawing consists of fine ferrite islands dispersed in the matrix of lath martensite.
实验表明，适于拔丝的双相组织是在板条马氏体基体上分布着细小的铁素体岛。
The equipment should be placed on the ground without violent vibration or on the working stage and connected in the power grid of 380v with three phase and four wire.
设备应放置在无剧烈振动的地面或工作台上，接入三相四线380v的电网。
The relation formula is given by calculating the phase current and central wire current, thus the motivation of central wire choice is offered.
通过对相电流及中线电流的计算，给出了二者的关系式，为确定选择中线提供了理论依据。
Thermal ignition temperature was defined, the thermal ignition process of electric hot wire initiating devices was divided as calefactive phase and explosion phase.
定义了热点火温度，将桥丝式电火工品的热点火过程分为升温阶段和爆炸阶段。
On this basis, the influences to unbalance current of line tower type, wire parameters and phase sequence arrange are analyzed.
在此基础上分析线路塔型、导线参数、相序排列等因素对不平衡电流的影响。
To compare the level of friction resistance (fr) of different design self-ligating brackets using various bracket-wire combination in dry state during orthodontic phase of leveling and aligning.
探讨在干燥条件下，在牙齿排齐整平阶段应用不同的自锁托槽与不同的镍钛圆丝组合所产生的滑动阻力。
Experimental results prove the proposed control method can compensate the harmonic, negative sequence and zero sequence current components in the three phase four wire.
实验结果表明，该装置可对三相四线制系统中的谐波、负序、零序等电流分量进行补偿。
In this paper, two types of main power circuits and their control methods are introduced when constructing active power filter in three phase four wire system.
本文介绍了在实现三相四线制有源电力滤波器时所采用的两种不同的主电路结构及其控制方法。
In the Three phase and Four wire circuit system, the neutral wire is very important.
在三相四线制供电系统中，中性线是非常重要的。
After having compared with common-used technique in contact wire height measurement, this paper describes a laser phase-detecting method to measure the height of contact wire.
在比较了以往采用的接触网导线高度检测技术后，开发出基于激光相位测距原理的接触网导线高度检测系统。
The filler has mode of continuous wire fill, incontinuous wire fill, in-phase pulse wire fill, inverted wire fill etc.
具有填丝速度两档切换、连续填丝、断续填丝、反转抽丝等功能。
Firstly, the existing methods of the three phase power measurement in the teaching materials are introduced. And then another three connection methods are suggested for three phase four wire circuits.
首先介绍了现有教材中已给出的三相电路功率的测量方法，进而提出了三相四线制三相电路功率测量的另三种接线方法。
When a fault occurs on one phase of a 3-phase, 4-wire system, the other two phases rise in voltage relative to ground (about 20%).
当故障发生在3相4线系统中的一相时，其它两相的对地电压就升高（约升高20%）。 好评（0）
With the variety of wire feed speed, the interval of each phase of droplet transformation has a great influence on the breaking state of liquid Bridges.
随着送丝速度的变化，熔滴过渡各阶段时间影响液桥分断时的表面张力过渡。
This is an analysis and generalization on hanging type, wire, lead elevation, structure rise, arm stay, phase splitting pattern, OCL post foundation of Qin-Shen Passenger Dedicated line OCL.
对秦沈客运专线接触网悬挂类型、线材配置、导线高度及结构高度、腕臂支持结构、接触网电分相形式、接触网支柱基础等主要技术标准进行分析、总结。
In order to make more effective control of universal power quality controllers (UPQC), an outer loop model for the voltage loop in a three-phase three-wire UPQC is proposed in the paper.
为了对通用电能质量控制器直流侧电压进行更为有效的控制，提出一种用于三相三线通用电能质量控制器(UPQC)直流侧电压控制的外环模型。
Especially three-phase four-wire active power filter hardware has simple structure with only three group switch device.
特别是三相四线制有源电力滤波器硬件结构简单，只有三组开关器件。
This paper offers a better theory basis for improving compensation capability of the three-phase four-wire APF controlled by hysteresis current control strategy.
该文的理论推导和所得结论为改善三相四线并联apf应用电流滞环控制时的性能提供了较好的理论基础。
It is concluded that the twin wire magnetic phase shifter has a clear advantage over the one wire magnetic phase shifter and that the former's magnetic current is half of the latters.
得出了双线磁化移相器比单线移相器有明显的优越性，其磁化电流是单线移相器的一半。
The operating status of three-phase three-wire HAPF(Hybrid Active Power Filter) in harmonic suppression and reactive power compensation for variable-frequency motor are introduced.
介绍了三相三线制混合型有源电力滤波器在变频调速电动机谐波治理和无功补偿方面的运行情况。
Moreover, three-phase four-wire active filters can suppress zero line current, and solve symmetric problem of system effectively.
另外，三相四线制有源电力滤波器能有效地抑制零线电流，并能有效地解决系统的不对称问题。
Two-phase winding, three-wire connection. Ungrounded or grounded can be specified.
两相绕组，三线连接。可指定不接地或接地。
The interpretation of active and reactive currents in non-sinusoidal and unbalanced three-phase four-wire systems is given based on the generalized instantaneous reactive power theory.
以通用瞬时无功功率理论为基础，阐述了电压不对称和非正弦条件时的有功和无功电流的物理意义。
Remark: every wire of the three-phase five-wire system is clearly indicated on the front panel.
注：每一块面板清晰显示三相五线制电源的母线、支线。
The power supply of wastewater treatment is connected from the nearest access. Production electricity and lighting equipment adopt 380/220 three-phase four-wire power supply.
污水处理站供电由就近的生产接入，生产设备用电及照明采用380/220三相四线制供电。
This paper introduces an active power filter device used for three phase four wire. The compensation principle and structure of main circuit and control circuit are given.
主要介绍用于三相四线制的有源电力滤波装置的研究工作，给出了系统的基本补偿原理、主电路及控制电路结构，并利用该装置进行了补偿实验。
This paper introduces an active power filter device used for three phase four wire. The compensation principle and structure of main circuit and control circuit are given.
主要介绍用于三相四线制的有源电力滤波装置的研究工作，给出了系统的基本补偿原理、主电路及控制电路结构，并利用该装置进行了补偿实验。
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