High Insulation, High breakdown voltage, compact and lightweight, Surface mounting type. 高绝缘,高击穿电压,结构紧凑,重量轻,表面贴装型。
Analysis of Insulation Breakdown of Two Sides Breaker in 220 kV Transmission Line Caused by Multiple Lightning Strikes 220kV线路多重雷击导致两侧开关断口绝缘击穿分析
Analysis and Countermeasures of the Strain Towers 'Insulation Breakdown on Electric Transmission Lines Occurred during a Gale 大风导致输电线路耐张串击穿的原因分析及防范措施
Electrical insulation and breakdown properties of si_3n_4 thin film Si3N4膜绝缘与击穿特性的研究
The heat fault of the electric equipment can cause insulation down and breakdown and makes the equipment damage, even gives rise to fires. 电气设备热故障会导致绝缘下降并击穿,使设备损坏,甚至引起火灾。
The development of measurement technique promotes the investigation of the mechanism of insulation system breakdown due to high-frequency impulse voltage. 测量技术的发展带动高频冲击电压对于绝缘系统击穿机理的研究。
This limitation can cause delay in appropriate remedial measures to be taken, leading to further deterioration of GIS insulation or a total breakdown. 这一局限性会导致不能及时采取适当的补救措施,从而致使GIS的绝缘状况进一步恶化甚至击穿。
During the long operational time, the film insulation is exposed to the electrical, thermal and mechanical stresses, which will cause insulation degradation and lead to breakdown finally. 绝缘薄膜材料在长期的运行过程中,受到电、热、机械和环境因素的联合作用,其性能将因此逐渐变坏,并最终导致绝缘击穿。
The experimental difficulties and technical problems, such as insulation, discharge, electric breakdown and so on, have been well resolved. 解决了高电压的绝缘、防电弧放电、防电击穿、电荷测量与数据采集等难题,设计一系列有效的实验装置和实验环境。
Local Treatment of Insulation Breakdown on Stator Winding of Hydraulic Turbogenerator 水轮机组定子线棒击穿的局部处理
In the lightning intensified area at South China, the accidents of the internal insulation breakdown and explosion of temporary opening SF6 circuit breakers or current transformers caused by lightning intruding waves occurred many times in recent years. 近年来南方多雷地区发生多起由雷电侵入波过电压引起的暂时分闸的SF6断路器或电流互感器内部绝缘击穿爆炸的事故。
The present paper through to equipment the and so on generator, transformer, circuit breaker, isolator, line insulator insulation breakdown appraised that, has analyzed each kind of equipment implementation condition examination technical plan, and briefed my factory practical application situation. 本论文通过对发电机、变压器、断路器、隔离开关、线路绝缘子等设备的绝缘故障评估,分析了各种设备实施状态检测的技术方案,并介绍了我厂的实际应用情况。
Air breakdown for composite alternating and direct voltages in a rod plane gap at standard atmospheric conditions were studied to understand insulation breakdown in electrical appliances. 为了分析实际运行中稳态预电压对电力设备绝缘的影响,研究了在标准气象条件下,棒-板间隙的操作冲击特性和交直流预电压的关系。
Insulation Breakdown Fault of Composite Insulator in Service and Defect On-line Inspection 合成绝缘子击穿事故及缺陷的在线检测
A new method for cable insulation breakdown monitoring 监测电缆绝缘击穿的新方法
Because of the structural design of insulation in switch is unreasonable, the phenomenon of breakdown is frequent when the switch is under high-voltage test by some manufacturers. 部位厂家由于对开关绝缘结构设计不合理,试验时经常发生击穿故障。
Almost all cable lines electrical insulation fault occurs before ( except outside direct damage) the temperature rise of cables or partial accessories, which leads to accelerated insulation breakdown and even cable fire [ 1]. 几乎所有电缆线路电气绝缘性故障发生前(除外力直接破坏)都会引起电缆或附件局部温度的上升,进而导致绝缘破坏加速直至击穿引起电缆着火[1]。
Partial discharge ( PD) is one of the important reasons causing power transformer insulation degradation and breakdown. It is meaningful to detect and diagnose partial discharge in power transformer. 局部放电是造成变压器绝缘老化和破坏的主要原因之一,变压器局部放电检测和诊断的研究具有深远的理论意义和广泛的实用价值。
The surface layer which is formed by this technology has excellent physical-chemical features, such as excellent bonding strength with the substrate, high hardness, wear resistance, corrosion resistance, high thermal shock resistance, good electric insulation layer, higher breakdown voltage. 利用此技术形成的表面膜层具有与基体的结合力强、硬度高、耐磨性、耐蚀性、抗热震性高、膜层电绝缘性好、击穿电压高等优异的物理化学性能。
Therefore, based on large number of papers, the author do research on the impregnation mechanism, hydrolysis dynamic properties of vegetable oil-paper insulation, the preparation and breakdown characteristic of nano-modified vegetable insulating oil and so on. 因此,作者在查阅了大量文献的基础上,开展了植物油纸绝缘浸渍特性、水解动力学特性、纳米植物绝缘油制备及击穿特性等方面的研究工作,主要包括以五个方面的内容。
Partial discharges ( PD) in large generators can lead to deterioration of the insulation, resulting in insulation breakdown and short circuit. 大型发电机绝缘局部放电会造成绝缘的劣化,最终导致绝缘击穿和短路事故。
Polypropylene ( PP) has superior chemical corrosion-resistant, mechanical properties, insulation performance and breakdown field, and it is extensively used to power capacitors insulation materials. 聚丙烯由于耐化学腐蚀性、力学性能、电绝缘性能好,击穿场强高等特点,被广泛的应用于电力电容器的绝缘材料。
In actual power cable operation, it will be able to cause the local temperature of cable or cable accessories to rise before the cable has electrical failure, resulting in further damage until insulation breakdown. 在电缆运行过程中,电缆线路发生电气故障前都会引起电缆或附件局部温度的上升,从而导致绝缘进一步破坏直至击穿。
They will both cause insulation breakdown and eventually developed into accidents. The external performances after they occur are very similar, but how to deal with the two faults are not the same. 它们都能引起绝缘击穿而导致事故发生,故障后两者的外在表现也非常相似,但处理方法却不尽相同。
PD can lead to the insulation breakdown of electrical equipment, and is the harbinger of insulation deterioration. 局部放电一方面会导致高压电气设备发生绝缘击穿,另一方面还是绝缘劣化的预兆。
However, the inevitable insulation defects inside the GIS may expand gradually and lead to fault occurrence, and the most common feature of electrical faults is partial discharge ( PD) before insulation breakdown or flashover. 然而,GIS内部不可避免的绝缘缺陷会逐步扩展并导致故障发生,最常见的电气故障特征是在绝缘完全击穿或闪络前发生局部放电(PartialDischarge,简称PD)。
However, overvoltage appears in this system for various reasons. The overvoltage can cause some accidents, such as insulation breakdown, equipment damage and line tripping and so on. 但是,由于各种原因,系统中会出现各种过电压,它们会导致绝缘击穿、设备损坏和线路跳闸等事故的发生。
The presence of moisture can deteriorate transformers 'insulation performance drastically. Severely, it can lead to some catastrophic accidents such as insulation breakdown and transformer burnout. 变压器油中存在的微量水分会使设备的绝缘性能大大降低,严重时可导致绝缘击穿、烧毁设备等重大事故。