过电流

而且参考了大量的微机保护资料，给出了准确的定值，对变压器进行了电流速断及过电流保护，此外还有瓦斯及油温等开关量的保护。

An accurate trip-setting is given after the reference to a large number of data on microcomputer protection . There are current quick-breaking protection and over current protection for the transformer fault , in addition to the gas and oil temperature etc. switching protection .

根据VSC起动过程的特点，设计了对VSC-HVDC系统模型起动的控制器，为避免起动过程的过电流采用了一定的限流措施。

According to the characteristics of VSC start-up process , the controller to start VSC-HVDC simulation model is designed . Some measures are used to avoid the over current in the simulation .

基于WEB的过电流保护整定软件设计

Software Design of Overcurrent Protective Coordination Based on WEB

基于多Agent技术的自适应过电流保护的研究

Research on adaptive overcurrent protection based on multi-agent

4.5倍过电流PVC导线绝缘层特征的分析研究

Study of PVC Wire Insulation Residues Characteristic in 4.5 Times Over-current

基于PLC的高压阀过电流试验恒流充电控制器的设计与实现

Design and Implementation of a PLC-Based Charger Controller for Over Current Test of High Voltage Valve

CMOS固体电路式保护&两段式方向过电流保护及自动重合闸装置

CMOS Solid-State Circuit Protection & Two-Step Directional Over Current Protection Device with Thee-Phase One Shot Reclosing

IEC60947-2低压断路器标准附录F（一）带电子过电流保护的断路器的附加试验

IEC 60947-2 Low Voltage Circuit Breaker Standard Appendix F Additional Test on the Circuit Breaker With an Electronic Overcurrent Protection

EAF（LF）变压器过电流保护浅析

Brief Analyses of the Overcurrent Protection for the EAF ( LF ) Transformers

介绍了我国第1套适用于灵活交流输电系统（FACTS）和高压直流输电系统（HVDC）的高压晶闸管阀过电流试验装置的基本原理。

The principle of the first overcurrent test equipment for FACTS and HVDC thyristor valve in China is introduced .

一种全方位防过电流和过电压的DSL保护电路

A New Method of Overcurrent and Overvoltage Protection for DSL Interface Circuit

基于MSP430单片机的过电流继电保护单元设计

Design of an Over-Current Relay Protection Unit Based on the MSP430 Single Chip

主要介绍IEC60947-22003年第三版中的附录F，带电子过电流保护断路器的附加试验。

It mainly makes an introduction to Appendix F to IEC 60947-2 3rd Edition 2003 . additional tests for circuit breakers with electronic over-current protection .

Bi2223/Ag和YBCO高温超导带材在交流过电流冲击下的失超及恢复特性研究

Quench and recovery characteristics in Bi2223 / Ag and YBCO HTS tapes at AC over-current

GTO过电流分级快速保护和极限保护条件

GTO Over current Rapid Graded Protection and Limited Protection Conditions

限流用PTCR过电流动作时间测试仪的研制

The Study and Design of an Overcurrent Actuation Time Tester for PTCRs Used as Current Limiters

IGBT的过电流保护一般在自身的驱动电路中实现，而主电路相对简单、体积小。

The overcurrent protection for IGBT is generally implemented in its drive circuit so that the main circuit is simpler and the volume is smaller .

保护电路利用采集到电气信号对整个系统实施保护，包括过电流、过电压、欠电压、IPM模块过热等。

The protective circuit safeguard the system against high current , high voltage , low voltage and high temperature on the IPM model .

介绍了高分子基PTC过电流保护元件的动作原理、安装方式、性能特点，影响因素及其应用。

The trip principle , mounting methods , element characteristics and influencing factors , and applications of PTC overcurrent protectors based on polymer were introduced in this paper .

本文介绍了PTCR过电流动作时间测量原理，仪器的电路设计和基本性能。

This paper presents the theory of PTCR actuation time measurement , the design of circuits , and performance of the instrument .

GH-039带有过电流保护功能的高速大容量IGBT厚膜驱动器集成电路

High-speed and large capacity IGBT of thick film driver integrated circuit GH-039 with over-current protection function

采用工控机与可编程逻辑控制器（PLC）组成控制系统，增加过电流调节和保护等策略和功能，提高了系统可控性，减小了空气预热器漏风率。

By applying control system composed of process-control-machine and programmable logic controller , adding tactics and functions of over-current regulation and protection , the controllability of the automatic system was heightened and the leakage rate of air preheater was reduced .

本文在分析配电变压器的过电流保护原理的基础上，采用DSP数字信号处理器，设计并开发了一套配电变压器微机保护装置。

This paper researches the principle of three sections over current protection of distribution transformer , and develops a digital protection device of power transformer with DSP . Firstly , this paper introducing the protection requirements and principles of the distribution transformer .

硬件电路主要设计了功率变换器主电路及其驱动电路，位置检测电路，A/D转换电路，PWM输出电路，CPLD逻辑综合电路，过电流保护电路。

Hardware circuit design mainly includes the main power converter main circuit and driver circuit , the location detection circuit , A / D conversion circuit , PWM output circuit , CPLD logic integrated circuits , over-current protection circuit .

阐述了SPD脱离器的重要性，从不同功能脱离器的设计要求入手，重点对SPD脱离器的热保护功能和过电流保护功能进行了研究。

The importance of SPD disconnector was expounded , from the design requirements of disconnectors with various function , with emphasis on researching of its thermal protective function and overcurrent protective function .

分析和比较了瑞士ABB、瑞典ABB、TOSHIBA和SIEMENS公司的几种高压晶闸管阀过电流试验回路的工作原理及其优缺点。

The working principles as well as advantages and defects of several high voltage thyristor valve overcurrent test circuits in ABB Swiss , ABB Sweden , Toshiba , and Siemens are analyzed and compared .

IGCT或者GTO的过电流保护一般在主电路中实现，使主电路复杂、成本高、体积大。

For IGCT or GTO , the overcurrent protection is generally implemented in the main circuit , which brings complex main circuit , high cost and great volume .

系统地研究了基于3842IC的DC-DC反激式电源中的两种自持现象的机理及其对应的数学模型，为其在基于类似3842IC的DC-DC适配器中的过电流保护设计中的应用提供理论依据。

In order to provide the basis of over current protection design in DC-DC adapter , the mechanism of self-holding in fly back switching power with single output Port which is based on the IC named 3842 is given here .

它高密度集成，具有对被驱动IGBT进行过电流或短路保护的功能，可用来直接驱动300A、600V的功率IGBT模块。

It is high dense integration , and has function for the over-current or short protection of the driven IGBT . It can also directly drive IGBT module of power with 300A , 600V .

本文采用UC3846作为PWM发生器，桥式驱动的脉冲变压器既保证信号的传输，又保证足够功率驱动全桥逆变主电路。对于经常发生短路刷镀刷镀工艺，快速过电流保护非常必要。

UC3846 is used for PWM , pulse transformer driven by bridge can transfer signal and power for IGBT in main circuit , quick protection is necessary for short circuit often happen during brush plate .