From starting-up to stabilization of the arc, the electric current and voltage usually fluctuate acutely, which makes a great impact on other circuit components.
由电孤启动到正常工作这段时间，电网线路的电流电压波动性较大，往往给电路其它各元件造成强烈的冲击。
Voltage sags due to line faults, transformer energizing and induction motor starting are main interference sources.
输配电线路故障、变压器投运、感应电动机启动是引起电压凹陷的主要原因。
A bus bar voltage dip during motor starting, shall not exceed 10%.
电动机起动时的母线电压降不得超过10%。
This paper presents a calculating method for checking the voltage impact on common bus during large motor starting.
本文提出一种计算较大电动机启动时对公共母线电压影响的方法。
Starting from a new aspect, it explained a new way to realize energy saving without retrofitting DCS and control logic at site in the application of high voltage frequency conversion.
从全新的角度，诠释了高压变频在系统应用中不对DCS和现场控制逻辑改造，即可实现节能应用的一种新方法。
Academic analysis and simulation calculation about starting characteristic of motor generator system in low voltage were carried through.
针对电动机—发电机系统在低网压下的启动特性进行了理论分析和模拟计算。
Two high voltage motors with significantly different power and load have to be started by the same set of starting device. Liquid soft starting devices for high voltage A.
因配套原因两台功率与负载特性相差较大的高压电动机组必须选用一套启动设备对两台机组进行一拖二控制。
This paper is involved in the analysis of oscillation starting condition, output voltage amplitude adjustment, and frequency selection network composition of sinusoidal coave oscillation circuit.
分析了用运算放大器组成正弦波振荡电路的起振条件和输出电压幅值的调节及选频网络的构成。
The electric auxiliary system sometimes has condenser motor loads, and the starting of inductor motors can cause bus voltage fluctuation problem.
厂用电系统中一般带有集中电动机负荷，异步电动机启动会引起母线电压严重的波动。
Through the study of the electric machine parameter changing during the starting of the high voltage motor, provided the setting calculation method for high voltage motor overheat protection.
通过对高压电动机起动过程中电气参数变化的研究，提出高压电动机过热保护的整定计算方法。
WJJL1 intelligence over current relay is a typical electronic apparatus which has over current, short circuit, over voltage, under curent, phase faults and starting failure protective functions.
WJJL1智能过流继电器是典型的电子、电器技术相结合的产品。具有过电流、短路、缺相、过欠压、欠电流、相失衡及启动故障等保护功能。
The electric auxiliary system usually consists of condenser motor loads, and the starting of inductor motors can cause the problem of bus voltage fluctuations.
厂用电系统中一般带有集中电动机负荷，异步电动机启动会引起母线电压严重的波动。
The simulation results show that the PWM rectifier has the merits of low overshoot of starting direct voltage, high speed of response and excellent dynamic and static performance.
仿真结果表明：PWM整流器启动时的直流电压超调量小，响应速度快，具有极佳的动静态性能。
ZX17 series stainless steel resistor is applied to AC 50hz, 1140v and DC voltage 1000v circuit, main of starting, braking and controlling motor. The rated power is 5.6kw.
ZX17系列不锈钢电阻器适用于交流50HZ电压至1140v及直流电压至1000v的电路，主要作为电动机起动、制动与调速用，额定功率为5.6 KW。
The paper points out the characteristics of the design and calculation of double voltage single-phase induction moter with capacitance starting, and analyses the circuit model of the machine.
本文讨论了双电压单相电容起动异步电动机的设计特点，着重分析了该电机起动时的等效电路。
The paper analyses the relation of the starting-time and the multiple of starting current and voltage in the current-limited starting process of motor with different character load .
对电动机在不同性质的负载下，恒电流起动过程中起动时间与电压率、起动电流倍数的关系进行了理论分析。
To meet the needs of different applications and loads, the conventional starting mode of the high-voltage cage liquid resistance starter is improved.
为满足不同应用场合和负载的要求，对传统的高压笼型液体电阻起动器的起动方式进行了改进。
Then the model is applied to simulate the direct start-up process, the reduced voltage starting process and the starting process with series resistance in the armature circuit.
据此仿真模型，进行了并励直流电动机的直接起动、降压起动、电枢回路串电阻起动的实例仿真实验，给出了有关仿真结果。
In practical projects, while an asynchronous motor starting, the drop of voltage on the bus bar must be within the limits which is stipulated by the national standard.
在工程实际中，电动机起动时引起的母线电压下降不能超过规定值。
Describing the specialities of the starting motor brushes are of short-time duty system, big current density and the contact voltage drop must be as small as possible.
汽车启动机电刷具有短时工作制、电流密度大及接触压降小的特点。
The low-voltage soft starter has been applied increasingly due to its advantages such as small size, adjustable torque, smooth starting, low impact and soft-stop function.
低电压软启动器以体积小，转矩可以调节、起动平滑、冲击小并具有软停机功能等优点得到了越来越多的应用。
To meet the needs of different applications and loads, the conventional starting mode of the high-voltage cage liquid resistance starter is improved.
改进型的高压笼型液阻起动器采用了多种起动方式及保护功能，更加适应不同负载的起动要求。
Through comparison among direct starting, conventional reduced voltage starting and electronics starter, this thesis described starting mode, run mode and application location of soft starter.
对电动机的直接起动、传统降压起动方式、起动方式进行对比，介绍了软起动器的起动模式、运行模式及适用场合。
In course of motor starting after no-voltage bus, a malfunction fault of motor differential protection was analyzed.
分析了一起母线失电后快切装置动作时电动机起动过程中差动保护的误动事故。
A method of identifying the end of soft starting process based on the voltage across the non-conducting thyristor is introduced.
介绍了一种利用晶闸管两端电压信号来确定软起动结束点的方法。
The principle of the soft starter is reducing the voltage applied to the stator of the induction motor by control the triggering angle of the thyristors in order to limit the starting current surge.
本文研究了三相感应电动机软起动器，主电路由三组反并联的晶闸管构成。通过控制晶闸管的触发角，可降低三相感应电动机定子电压，从而达到抑制起动电流冲击的目的。
Control circuit has functions as soft starting and voltage stabilizing.
控制回路具有软启动、稳压功能。
This paper introduces the characteristic and principle of water resistance soft-start technology and points out it can satisfies the starting of high-voltage large power ac motor.
介绍了水电阻软启动装置的工作原理及特点，应用其可满足大功率交流电机启动的要求。
This power supply employs low voltage starting for the krypton lamp, which has an active realistic significance for increasing the lifetime of the krypton lamp.
该电源对氪灯实行合理的低压起动，对延长氪灯使用寿命有积极的现实意义。
This text analyzed disadvantages in the traditional start method with reduced-voltage and the advantages in modern soft-starting method.
文章分析了传统降压启动方法的缺点和现代软启动方法的优点。
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