过电压

Theoretical analysis showed that the overvoltage when the reactor was cut-off would be nearly 3 times or 7 times.

理论分析表明，在不带避雷器情况下，切除高抗会产生近7倍的过电压；带上避雷器，所产生的过电压将近3倍。

Based on the principle of refraction and reflection, it is analyzed why electrified-opened-switch is easy damaged by lightning overvoltage .

从过电压的折射和反射的原理出发，分析了带电开口运行开关容易遭受雷电过电压损坏的根本原因，提出了相应的改进保护措施。

The Overvoltage Category for outdoor equipment can be higher than for indoor equipment.

该室外设备的过电压类别可能会高于室内设备的过电压类别。

Aimed to solve this problem, in this paper, the key technologies of overvoltage online monitoring system are researched systematically and a new type of overvoltage monitoring system model machine is developed.

针对这一问题，本文对过电压在线监测系统的关键技术进行了系统深入的研究，并研制了一套过电压在线监测系统样机。

The generator terminal voltage rising caused by the local over-voltage,over-current and single-ge-nerator compelling excitation during system syntony is theoretically analyzed.

从理论上分析了谐振导致局部过电压、过电流及发电机单机强励后造成机端电压升高的问题。

Aiming at ceaseless development of computer technique,it introduces the approach of thunder s intruding computery across voltage,bring forward the preventing measures of thunder s intruding computery across voltage,at the same time discuss the character of mutual earthing system,to give some help in the lightningproof work of computery.

针对计算机技术的不断发展，介绍了雷电过电压侵入计算机系统的途径，提出了由线路进入系统过电压的防护措施，同时探讨了共用接地系统的特点，以帮助人们做好计算机系统的防雷工作。

Yet, reignition overvoltage might do harm to transformer coils by cumulative effects for its surge steepness. The measures lies in setting parallel connection capacitance in practice working.

结果表明，尽管实际中切除空载变压器过电压的幅值并不是很高，特别是带负载变压器的情况，但重燃过电压的陡度较大，对变压器绕组的纵绝缘有累积作用，在实际工作中应以并联电容为基础的限压装置。

According to basic theory of overvoltage caused by reclosure and some on-site experiences, the authors prove that under specific condition the overvoltage caused by opening-closing-opening test of circuit breaker is within the range from 2.0 pu to 3.0 pu, thus the existence of risk is circumstantiated, and some suggestions to evade such technical risk are proposed.

作者根据重合闸过电压的基本理论和一些现场实际经验证明了在特定条件下，分合分试验过电压在2~3 pu之间(1 pu=550 kV)，证实了风险的存在，最后提出了规避分合分试验风险的建议。

Main Products has combined three-phase overvoltage protection , high-low-voltage reactive power compensation and filtering device, high voltage current-limiting fuse combination of protective devices, high-capacity high-speed switches, arc and over-voltage protection devices and power quality management products, all products have independent intellectual property rights.

产品主要有三相组合式过电压保护、高低压无功补偿及滤波装置、高压限流熔断器组合保护装置、大容量高速开关、消弧及过电压保护装置及电能质量治理产品，所有产品均拥有自主知识产权。

Group main products are: three-phase modular overvoltage protectors, high voltage current-limiting fuse combination of protective devices, de-excitation of synchronous generator rotor device, large-capacity high-speed switching device, extinction arc and over-voltage protection device, computer system protection device, intelligent switchgear, etc., series, nearly a hundred kinds of products.

集团主要产品有：三相组合式过电压保护器、高压限流熔断器组合保护装置、同步发电机转子灭磁装置、大容量高速开关装置、消弧及过电压保护装置、微机系统保护装置、智能开关装置等七大系列，近百种产品。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。