设计整个系统时必须以电流限制断路器作为保护要求的主要驱动力。
The entire system must be designed with current limiting breakers as key driver of the protection requirements.
在电容器短路的情况下,电阻器限制电流的大小。
The resistor limits the current in case the capacitor becomes shorted.
一个较好的解决方法是,断路器在进行电流限制时,对上升的漏电电流做出较早的迅速的反应。
A superior solution is one in which breakers are current limiting by responding early and quickly to an increasing fault current.
电阻器(R)必须足够大,以限制流过二极管的电流,使之不会损坏二极管。
The resistor (r) must be large enough to limit the current through the diodes to prevent damage to the diodes.
电阻器(R)用来限制流过二极管(D1和D2)的电流。
The resistor (R) is used to limit the current through the diodes (D1 and D2).
电阻器(RL)是电流限制电阻器,用来保护开关和静电计不受大电流的损害。
The resistors (RL) are current limiting resistors used to protect the switches and electrometer from high current.
软启动器可以限制感应电机的起动电流及起动转矩,减少了电机起动过程中对电网的冲击,延长了电气设备和机械结构的使用寿命。
Soft-starter can limit the start current and torque of the induction-motor, reduce the influence to the power circuit in the starting process, and prolong electrical equipments' working life.
故障电流限制器提供了另外一种解决方案。
在单位功率因数整流器中,利用瞬时值比较法来控制电源电流,不但控制简单,还可有效限制器件的最高开关频率。
The method of instantaneous value comparison for source current control of unity power factor rectifier possesses advantages of simplicity as well as valid restriction for maximum switching frequency.
线性双折射效应是限制光学电流传感器实用化的关键因素。
Linear birefringence effect is the primary factor that makes optical current sensor unpractical.
当电流超过限制值时,过负荷电流继电器自动保护振荡管和整流器,同时可以避免由不当操作所引起的频率漂移。
The over-current relay works to protect oscillation tubes and rectifier, when the current exceeds its limits. Frequency deviation caused by faulty operation is also prevented.
线性双折射效应是限制光学电流互感器实用化的关键因素。
Linear birefringent effect is the primary factor that makes optical current transducer unpractical.
结果表明,该软起动器在软起动过程中,限制了电动机的起动电流,实现了电动机的平稳起动。
The results show that the soft starter could start up smoothly and reliably, and the starting current of the asynchronous motor is controlled.
该文指出整流式故障电流限制器在限流过程中降低了短路电流幅值,改变了短路电流波形,明显地影响到高压断路器的关合开断能力。
The rectifier type FCL not only reduces the amplitude of short circuit currents but also changes their waveform which seriously affects the making and breaking capability of HV circuit breakers.
结果表明FPC功率极限的主要约束条件是变频器电流限制。
Research results show that the main restraint condition of FPC'spower margin is the current limitation of frequency converter.
采用有源滤波器就地吸收谐波源所产生的谐波电流,是消除或限制电力系统谐波污染的一种有效的措施。
The active power Filter, which can compensate simultaneously the harmonics and reactive power of non-linear loads, is good method to eliminate the harmonic pollution in power system.
限流电抗器电抗值选择时既要将短路电流限制到规定值,又不能使电压损失过大。
When the reactance value of current limiting reactor is selected, the short circuit current should be limited within the specified value and the voltage loss should not be too much.
因变频器以电流为计算限制。
Frequency changer by means of electric current for calculation limitation.
仿真的结果证明了基于磁通补偿的大容量故障电流限制器方案的提出和研究,对高压和超高压输电性能的革新改造具有重要的技术作用和现实意义。
The result of Simulink is very satisfied, and the research of the FCL based on flux compensation will play a very important role in the development of power system in the future.
通过适当调节最大限制电流或采样电阻,该电流源可应用于各种型号的中小功率半导体激光器。
The precision LD current driver can be used in many kinds of small-medium power LD by adjusting the maximum limited current or the sampling resistance.
优选的是,浪涌电流限制器设备进一步包括可充电电容缓冲器,其设置在关于基于IGBT的限制器单元的下游,用于形成缓冲的输出。
It is preferably, that the inrush current limiter device further comprises a chargeable capacitive buffer, arranged downstream in regard to the IGBT-based limiter unit for forming a buffered output.
调谐型相间功率控制器(IPC)是一种串联型控制装置,其突出特点是具有很强的线路有功输送功率控制能力和短路电流限制能力。
The tuned Interphase power controller (IPC) is a series connected power controller which has outstanding ability to control active power in transmission line and to limit the short circuit current.
采用快速开关可显著减少故障电流限制器的运行损耗,采用GTO可降低电流转移的难度。
By using the fast switch, the power loss of the FCL in normal operation condition could be avoided, and by using the GTO, the rapid current-transferring could be realized with a smaller difficulty.
本文在发电机电压调节器励磁控制的基础上 ,提出增加一套负载电流限制电路的方案 ,并为某型飞机电压调节器设计出负载电流限制电路。
The restriction can be flexibly realized by controlling the generator excitation. The principle of a load current limiting circuit is studies and a new scheme is presented.
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。
Additional features include an onboard low drop regulator for IC power, programmable soft start, undervoltage lockout, adjustable current limit and output voltage temperature compensation.
利用大容量高速开关装置,在正常运行时将串联电抗器短接,消除电抗器漏磁通对其周围的金属产生的涡流发热;在发生短路情况下该装置快速断开,重新将电抗器投入,限制短路电流。
By high capacity high-speed switch, the series reactor is shorted during normal operation, eliminating the reactor leakage magnetic flux to eddy hot produced metal member around it.
采用故障电流限制器来抑制电网故障时的短路电流是保证断路器遮断容量不致超限的有效方法。
It is an effective approach to ensure the non-exceeding of the breaking capacity of line breaker by adopting fault current limiter to restrain short-circuit current when the grid is in fault.
因此,电容器C4(穿过电阻器R2和IGBTQ2)的充电电流也受到限制,由此不会有部件被击穿。
Hence, the charging current of capacitor C4 (running through resistor R2 and IGBT Q2) is also limited so that no components can break down.
因此,电容器C4(穿过电阻器R2和IGBTQ2)的充电电流也受到限制,由此不会有部件被击穿。
Hence, the charging current of capacitor C4 (running through resistor R2 and IGBT Q2) is also limited so that no components can break down.
应用推荐