查询词典 feeder cable

The thesis studied and constructed the diagnosis expert system of DC feeder cable insulation.

论文研究并构建了直流馈出电缆绝缘诊断专家系统。

A cable between the distribution cable and the main feeder cable to connect phone users to the central office.

分支电缆和主馈线电缆之间的一根电缆，用于将电话用户接入市话局。

The results of research show that the proposed method could effectively diagnose the cut or crack fault by detecting the discharge in the DC feeder cable.

研究结果表明检测直流馈出电缆是否发生放电能够较好的发现直流馈出电缆破损故障。

The 1500V DC feeder cable is one of the key devices for the safety operation of subway system, and its insulation status directly affects the security of electricity supply of rail traffic.

为解决地铁直流电缆电气接线的特殊性而导致其放电检测中存在的大量干扰信号，实验研究了整流装置产生的整流脉冲、机车启动制动产生的电流脉冲、随机性脉冲信号及其它电子设备产生的窄带信号等干扰信号的特征。

To meet with the DC feeder cable without ground wiring, different DC current method was proposed to solve the problem of DC leakage curren on-line detection of the cable. The paper still studied in primary the feasibility of low frequency superposition method to detect the DC feeder cable. It not only explained the working theory of the system, but also presented some problems to be solved.

针对直流馈出电缆无接地线，提出采用差量直流电流法解决了电缆直流泄漏电流的在线检测问题，并初步研究了低频叠加法监测直流馈出电缆的可行性，给出了工作原理及还需解决的问题。

The results of laboratory experiment and filed operation indicated that the system operated stably and could credibly evaluate the insulation state of DC feeder cable.

实验室试验及现场运行结果表明综合监测直流泄漏电流和直流放电信号能够较好及时地诊断出电缆故障，研制的系统稳定、可靠，能够评估直流电缆绝缘状况。

But at present the on-line monitoring technology was concentrated on AC cable, the relevant research on DC feeder cable was scarcely carried out around the world, and the on-line monitoring technology on AC cable can not be adopted. Then, in the thesis, the faults reasons were analyzed and fault models with real project were set up started with the faults of the DC feeder cable.

由于直流馈出电缆在线监测技术国内外未见报道以及交流电缆在线监测技术不能移植于直流馈出电缆在线监测的现状，论文首先从直流馈出电缆故障分析入手，分析了直流馈出电缆故障原因，建立了具有工程意义的直流馈出电缆故障模型。

For the DC leakage current could not effectively evaluate the state of DC feeder cable insulation layer with cut or crack, the discharge theory and its characteristic were studied in the DC feeder cable under special condition, and the DC discharge was proposed to detect the insulation cut or crack fault in DC feeder cable.

针对泄漏电流检测直流馈出电缆绝缘破损故障效果不佳的问题，研究了直流馈出电缆破损状态下的放电机理及特征，提出采用直流放电法检测直流馈出电缆破损故障。

The results of study showed that there were many interference signals in discharge detection signal for the DC feeder cable, which determined by the special electric wiring of the cable. The results of laboratory simulation and field measurement showed that the main interferences involved discharge pulse generated by other equipments of the traction substation, white noise, rectifying pulse generated by the rectifying equipments, current pulse generated by the braking of the locomotive,stochastic pulse signal, and narrow-band signal generated by electric equipment.

研究结果表明直流馈出电缆的电气接线以及负荷特点决定了其放电监测中存在大量的干扰信号，干扰信号包括白噪声、交流侧放电脉冲、直流侧其它设备的放电脉冲、整流装置产生的整流脉冲、机车启动制动产生的电流脉冲、随机性干扰脉冲以及其它电子设备产生的周期性窄带信号。

The direct current feeder cable is one of the key devices for the safety operation of mass transit system. The insulation of DC feeder cable is serious hidden trouble factor threatened the operation safety of mass urban transit.

由于敷设环境差，直流馈出电缆容易因绝缘老化、受损发生故障，严重威胁着城市轨道交通的供电安全。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了