绝缘电阻

Taking the 550kV GIS installed in a certain hydropower station in China as research background and according to structure and operational features of this 550kV GIS, on the basis of calculating VFTO under seven kinds of operation modes, the damage of VFTO to transformer insulation and its influence on surge arrestor counter as well as the influences of closing resistor and voltage caused by residual charge on the amplitude and frequency of VFTO are researched.

以董箐水电站为研究背景，根据550 kV GIS结构及运行特点，在计算了隔离开关7种操作方式下VFTO的基础上，分析了VFTO对变压器绝缘的危害与对避雷器计数器的影响以及残余电荷电压和合闸电阻对VFTO幅值与频率的影响。

Product characteristics : 1, excellent heat resistance : can adapt to the use of power lines due process overload and short circuit of the high temperature; 2, excellent electrical properties : material for the performance of their higher intensity and volume resistivity of insulation, security is good; 3. excellent corrosion resistance and anti-aging properties : apply to the soil and working environment, long life; 4. excellent flame retardance : difficult combustion; 5, smooth wall formation, the friction coefficient, good wear resistance : in the installation process can greatly reduce the damage to power lines, improve work efficiency; with the traditional asbestos cement pipes, the The product is light weight, good flexibility, earthquake-resistant and differential settlement, and not at the construction site encapsulation pouring concrete; Transport construction is simple, low cost, can greatly shorten the construction period.

产品特点： 1、优良的耐热性能：能适应电力电缆使用过程因过载短路而产生的高温； 2、优良的电气性能：材料自身表现为较高绝缘强度和体积电阻率，安全性好； 3、优异的耐腐蚀性能和抗老化性能：适用于各种土壤和工作环境，使用寿命长； 4、优良的阻燃性能：不易燃烧； 5、内壁光滑平整、摩擦系数小，耐磨性能好：在敷设过程中可大大降低对电缆的损害，提高工作效率；与传统的石棉水泥管相比，产品的重量轻、柔性好、抗震性及抗不均匀沉降好，无须在施工现场包封浇混凝土；运输施工简便，费用低，可大大缩短工期。

Main technical parameters of the Bus bar include insulation strength and resistance.

母导线的主要技术参数是指绝缘强度和导线电阻。

According to the requirements of resistance and insulation strength between conducting plates, this paper advances a design scheme for the control system of bus bar parameter tester, and introduces the design process for the hardware circuit of control system in detail.

本文根据自动检测母导线导电片电阻和导电片之间绝缘强度的要求，提出了母导线参数检测机控制系统的设计方案，并详细介绍了控制系统硬件电路的设计过程。

Combine with the analysis of the effect that caused by the shielding of topography and the conditions when lightning occurred on the top of the transmission tower, this paper bring forward a synthetical scheme that on the AnNan overhead transmission line, can use long life resistance reducer to reduce the ground resistance of the transmission tower,set up a shielding pull- line on the body of some tower,set up lightning arrester and take unbalance insulated method to improve the level of the line's ability of preventing lightning.

结合地面屏蔽效果分析和雷击杆塔塔顶情况分析，提出了在安南线采用降低杆塔冲击接地电阻、对部分杆塔塔身安装防雷拉线、加装线路避雷器、在双回路共架杆段采用不平衡绝缘配置等措施来提高安南线耐雷水平的综合方案。使用长效降阻剂，降低杆塔的接地电阻，这是提高线路耐雷水平、降低雷击跳闸率的有效措施。

In order to provide a photo detector in which the generation of spontaneous noise is suppressed and external noise is effectively reduced, a p-type diffusion layer is provided on the obverse side of an n-type semiconductor substrate, a p-type low-resistance layer is provided on the obverse side of the p-type diffusion layer, a lead frame is provided on the reverse side of the n-type semiconductor substrate with an insulative resin film in between, and the p-type low-resistance layer is electrically connected to the lead frame.

为了提供能够抑制自发噪声的产生并有效地减少外部噪声的光检测器，在n型半导体衬底正面设置p型扩散层，在p型扩散层正面设置p型低电阻层，在n型半导体衬底的反面设置引线框架、中间夹有绝缘树脂薄膜，p型低电阻层电连接到引线框架。

Utilizing the positive temperature coefficient effect, the resistance of polymer will rise as temperature increasing sharply.

利用其PTC效应，电阻能随温度急剧上升，亦即是当导电复合材料之温度上升至一关键温度时，其电阻会明显地大幅上升，达到暂时绝缘或短路的效果。

It is found that CO2 laser irradiation results in a drsmiatic decrease in the resistivity and remarkable increases in the insulator-metal transition temperature T(subscript P and the temperature coefficient of resistance TCR.

与传统的高温退火类似，经CO2激光辐照后，样品的电阻率从1.3mΩ？cm下降到0.5mΩ？cm，绝缘态－金属转变温度和温度电阻系数分别从255K和7.9%？

Sheath platinum RTD thermosensitive elements:it is a solid substance combined by metal sleeve, unground, lead wire, platinum RTD components.

铠装铂热电阻感温元件：它是由金属套管，绝缘材料，引线和铂热电阻元件组合而成的坚实体。

Since the Manganin pressure gauge is created, we can make some tests on it. At first, we observe the variation of resistance under some processing conditions.

本论文研究的目的在於改善高压下之 Manganin 线的电阻之安定性，实验条件上针对绝缘材料、构造、退火方法等参数探讨Manganin 线的电阻之安定性。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。