Two engineering design projects, practical operation and the calculation method of transformer capacity and start voltage were introduced.
文中介绍了两个工程设计、运行的应用实例，以及变压器容量及起动电压水平的计算方法。
The ventilators cool down the radiators. In summer the noise is terrible. Right now there is no voltage here, works will start in autumn.
排气风扇冷却散热器，在夏天，噪音是可怕的，现在这里没有电压，工程将于秋天开始。
If the voltage is removed for more than 90 msec, the electronic will start to sink current 10 msec after the application of voltage as usual.
如果电压移除大于90毫秒﹐电子负载会照例在输入电压后10毫秒才拉电流。
The control strategy of start-up process of HVDC based on voltage source converter (VSC-HVDC) is discussed.
对基于电压源换流器(vsc)的直流输电(VSC - HVDC)系统的起动过程控制策略进行了研究。
At the time of failure, no matter what kind of start state of voltage phase, the zero-sequence transient current has the characteristic of inverse phase.
在故障时刻，无论故障相电压的相位处在何种初始状态下，都有零序电流反向的特征。
A low power CMOS bandgap voltage reference source with a start-up circuit is presented based on the bandgap voltage theory.
运用带隙基准的原理，提出了一种带启动电路的低功耗带隙基准电压源电路。
Over current protection, negative current protection, zero sequence current protection, over time of start protection and low voltage protection is configured in the device.
本装置配有过流保护、负序电流保护、零序电路保护、起动时间过长保护、低电压保护。
When the output voltage is over 40v the product is protected. When the fault is excluded or is start working again the power supply is working normally.
当输出电压超过40v时，产品进入保护状态，当故障排除或重新起机时，电源工作正常。
The pre-discharge not only eliminates partial wall charges but also increases density of priming particles which help the coplanar-type discharge start at a lower cell voltage.
此“ 先期放电”不但清除了部份的壁电荷还增加空间中带电荷粒子数量并使得其后产生的维持放电可于较低电压时开始。
A low voltage current mode bandgap voltage reference circuit with a novel start-up circuit is designed.
介绍了一种低压电流模带隙电压基准电路，并提出了一种新颖的启动电路结构。
The effects of environment temperature, excess air ratio, storage battery voltage on start speed and emissions are studied.
研究了环境温度，过量空气系数，蓄电池电压，点火提前角对单循环冷起动时，起动转速和排放的影响。
About current surge when start in wide voltage, corresponding control circuit of start-up is designed in this paper.
对于宽电压范围启动过冲问题，本位设计出一种防止过冲的启动控制电路。
Additional features include an onboard low drop regulator for IC power, programmable soft start, undervoltage lockout, adjustable current limit and output voltage temperature compensation.
其他特点包括用于IC电源的内置低压差稳压器、可编程软启动、欠压闭锁、可调电流限制和输出电压温度补偿。
It has four start mode: the ramp voltage start, the limit current start, the ramp speed start and the discrete frequency start.
所研究的软起动器具备四种起动方式：电压斜坡起动、限流起动、转速斜坡起动和分级变频起动。
Three soft start-up technique for voltage loop are compared with each other, which are the reference of DC bus voltage gradually increasing, constant charging current and different PI modulation.
电流环软启动通过输出电流指令递增实现，电压环软启动则比较了直流侧电压指令逐步升高法、恒定电流充电法、变PI参数调节法三种策略。
The working principle, start characteristic and application of the soft starter of high voltage thermal resistor are presented.
介绍了高压热变电阻软起动装置的工作原理、起动特性及应用。
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。
This research aims to study over voltage induced by under-excitation limitation moves in black start of the power system.
对黑启动过程中发电机带空载长线路可能出现的欠励限制动作导致的系统工频电压升高问题进行了研究。
The detection and location of the start point and end point of the voltage sag and swell is a key problem for the power quality monitoring.
对于短时低电压扰动发生、恢复时刻的检测与定位则是电能质量监测和统计中获取相关指标首先要解决的问题。
The characteristics of GZYQ liquid soft-start device are presented and its application in large and medium-sized high-voltage ac motors is described.
介绍了GZYQ液态软起动装置的性能特点及其在大中型高压交流电动机上的应用。
CMOS bandgap voltage reference with low voltage based on the bulk driven technology is designed in this paper, with circuit to improve PSRR and start-up circuit.
通过对低压低功耗集成电路设计技术的分析，着重设计了一个基于衬底驱动技术的CMOS带隙基准电压源，其带有提高电源抑制比电路和启动电路。
The device can solve the problem of over current in electromotor start up process, and has the digital displaying of fault such as under voltage, over voltage and over current, etc.
该系统解决了电动机启动中电流过大的问题，并且实现电动机的过压、过流、欠压等各种故障的数字显示。
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。
The paper analyses the transition process from start to shut of the system, and deals with the under-voltage protection, hardware start delay and the design of some other protection circuits.
文中对开、关机的过渡过程进行了分析，还介绍了有关欠压保护、硬件开机延时及其它保护电路的设计。
The simulation model of high voltage induction motors soft starting control is created by MATLAB. The soft starting control model of the current-limit start and the voltage-slope start are simulated.
利用MATLAB搭建了高压异步电动机软起动控制的仿真模型，对限流和电压斜坡软起动控制方式分别进行仿真。
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。
It is found that the instable start (ignition) voltage is related to the structure and the size of electrode as well as to the physical property of liquid electric inductivity.
分析表明：突变现象是感应充电进入电晕充电的固有特性，电压降低，电流突然增大，产生突变，且不稳定的起始(着火)电压与电极的结构形式、尺寸、液体介电物理性质有关。
The motor is permitted to directly start in conditions of rated voltage and rated frequency.
即IC611。电动机允许在额定电压和额定频率下直接起动。
The proposed bi-directional converter has no high voltage spike problem and start-up problem, which are inherent in current-fed and voltage-fed hybrid type bi-directional converters.
这种结构的双向变换拓扑解决了电流型一电压型组合式拓扑的开关管电压尖峰问题和启动问题。
The proposed bi-directional converter has no high voltage spike problem and start-up problem, which are inherent in current-fed and voltage-fed hybrid type bi-directional converters.
这种结构的双向变换拓扑解决了电流型一电压型组合式拓扑的开关管电压尖峰问题和启动问题。
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