断相

浅谈电动机断相运行的危害及预防

Damage due to Loss of Phase Operation of Motor and its Prevention

采用PWM调制方法来控制三相定子电压，使关断相延迟，让关断相的电流变化平滑进行。

Through the use of PWM modulation mode control three phase stator voltage , delayed turn off , make the turn off phase current smooth change .

可控制交流50Hz，380V，三相异步电动机的直接起动停止，并具有过载和断相及失压保护。

Able to directly control AC50Hz , 380V asynchronous motor with the protection of overload , phase-failure and voltage-absent .

用可编程序控制器（PLC）与接触器实现了三相鼠笼型异步电动机的定子串电抗降压起动、正反向控制、短接制动和过载、断相保护，给出了PLC的I/O接线图和梯形图。

With the programmable logical controller and contactor , the author achieves stepping-down voltage starting , obverse and reverse controlling , short circuit braking , overload and phase-break protection . Moreover , the I / O wiring graph and ladder-shape graph of PLC are drawed .

增氧机保护器能在断相、过载、欠压的情况下起保护电机作用，适合于0.18～60kw的三相异步电动机配套使用。

The protective equipment for aerator can protect the motor from damage under the condition of phase-off , over-load and lower-voltage , suited to form a complete set with the three phase asynchronous motor .

中性点不接地系统断相故障实例分析

Analysis of Phase out Fault in Neutral Non - grounded System

交流异步电动机断相机理分析及保护措施

Analysis and protective measures on loss of phase of asynchronous motor

以负序电流为原则的电动机断相保护装置

A Motor Open-phase Protector Based on the Principle of Nagative-sequence Current

三相异步电动机断相保护设计原理质疑

Discussion on Loss of Phase Protection Design Theory for Three-phase Asynchronous Motor

高压电动机的断相故障分析与保护配置

Analysis and protection configuration for the phase failure of the HV motor

织机节电控制和电动机断相保护电路

Electricity Saving Control On Looms And Motor Protection Circuit Against Phase Breaking

谈谈几种简易的电动机断相保护

Elementary discussion on several kinds of simple-easy break phase protection of motor

浅析电动机断相运行的危害与对策

Analysis on Damages and Countermeasures for Motor Open Phase Running

自起动稀土永磁电机断相运行时步有限元分析

Open-phase operation analysis of line-start rare-earth permanent magnet motor with time-stepping FEM

单稳态集成电子断相保护器的设计与调试

Design and Adjustment of Monostable Integrated Electronic Open-phase Protector

变结构电力系统互感线路断相故障断口模型

Open Conductor Model of Mutual Coupling Line in Power Systems with Variable Configurations

电动机断相运行和电流-电压等比规律

Phase Failure Operation and Current-voltage Equal-ratio Rule of Motor

浅谈三相异步电动机断相运行及其热继电器保护

Talking on Open-phase Running of a Three-phase Asynchronous Motor and Its Thermorelay Protection

电动机远距离运行断相保护在实际工作中很重要。

The open-phase protection in long-distance motor operation is very important in practice .

变结构电力系统断相故障的新算法

A New Algorithm for Open Conductor Faults in Power Systems with Variable Structures

发电厂高压电动机断相保护的探讨

On open-phase protection for HV motors in power plants

电机断相保护电路的两种设计方法

Tow designing methods of the cut - out protection of the electric ciruit

交流电动机断相器保护设计原则

Principles for Designing Phase Failure Protection of AC Motors

电动机断相运行和断相保护方案

Mode of motor phase failure operation and its protection

隔爆开关缺断相保护的研究

Research of Open Phase Protection in Explosion - proof

一种新的电动机断相保护装置方案

A New Open-phase Protection Device of Electric Motor

基于游梁式抽油机负载特性的算法实现与断相保护电路

Algorithm realization based on the load characteristics of beam-pumping unit and phase-failure protection circuit

电动机群控断相保护装置

Phase-failure Protective Devices for Groups of Transformer Fans

单片机三相交流电断相报警器

SCM three - phase AC phase breaking alarm

纺织电气断相保护的研究

Phase Protecting in Electronic System for Textile Production