• 提供了一般低压配电网主电源短路电流计算公式

    A formula for short current calculation in low voltage power grid distribution was put forward.

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  • 分别断开壳体(2)前面背面上在上下方向排列三个负荷端子(4)和电源端子(5)。

    Three load side terminals (4) and power supply side terminals (5) are respectively arranged along the up-down direction on the front and the back of the decoupler casing (2).

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  • 并经过仿真计算数据验证表明该选相原理正确性满足现场选相的要求,从而有效地解决电源侧的选相问题。

    The principe is based on model component analysis. The ATP simulation calculation and the data certification show that the principle is correct and can meet the re

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  • 配置全部集中在右边包括电源、快门键(这个 N9没有了)音量按键,而机身下方有扬声器

    The right side of the phone is adorned with a volume rocker and power button, and the left is completely bare -- just super sleek, curved polycarbonate.

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  • 请勿接触任何通向被测电路共用电源电流提供通路的物体

    Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth) ground.

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  • 对晶CO2焊接电源焊接过程变压器一次产生谐波信号进行采集分析以此研究焊接电源对电网的影响

    This paper collects and analyzes the harmonic signals of the CO2 welding machines main transformer, by which researches the effect of welding power source on the main.

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  • 新型开关电源接入点获得单位功率因数

    A new type of switching power supply realize of the unity power factor from the network access point adjacent.

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  • 谐振接地系统中,系统高压对称故障负荷不对称会引起系统电源电势的不对称,从而改变中性点位移电压

    In resonant ground systems, both asymmetric fault of high-voltage side and asymmetry of load cause the asymmetry of system electrical source voltage. Then they change neutral displacement voltage.

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  • 只需检测电源电流直流电容电压通过简单计算直接求出每个开关周期内开关占空

    The duty ratios of switches in each switching cycle can be directly obtained by simple calculation using two phases source currents and dc bus capacitor voltage.

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  • 电机系统emi无源滤波器电源滤波器输出滤波器组成。

    So EMI passive filter of motor system is composed by mains filter and output side filter.

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  • 然后研究各种EBG结构电源接地层内(即靠近介质)增加高导率材料涂层供电系阻抗特性的影响。

    Then, we focused on the EMI problem from the power bus structure using both such EBG structures and the magnetic material coating on the power and ground planes.

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  • 通过发电电源配置分析,阐明大功率柴油机电厂优势电网稳定运行的重要作用

    Through the analysis of disposition of power source side, the superiority of high powered diesel power plant and its importance on stable operation of power network are presented.

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  • :空载制动时间直流切断制动器电源的制动时间。

    Note: brake lag time of the DC power supply cut is no-load brake lag time.

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  • 有源型电子电流互感器高压工作电源取能方式影响互感器可靠性精度关键环节

    How to obtain working power supply from high voltage side of active electronic current transformer (ect) is the key link impacting the reliability and accuracy of the instrument transformer.

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  • 实验表明,作为双馈感应发电机转子励磁电源的三相pwm变换器具有功率因数、网电流谐波、能量双向等优点。

    Experimental results show that three-phase PWM converters are advantageous in high power factor, small input-line current harmonic distortion and bi-directional power flow.

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  • 只有载体FET(场效应晶体管)开关需要电源,载体本身基本上需要电源

    As we need only electrical power for FET switching on the carrier side, power supply system for carrier is basically not needed.

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  • 本文设计了种适用于中大功率便携式逆变焊机具有电源输入功率因数高,主功率器件实现开关等特点。

    In this paper, a multifunctional welding machine is designed with the characters of high power factor, soft switching and portable remove.

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  • 通流容量与系统开机容量、线路长短合闸电阻系统电源相位差有关。

    The energy depends on the unit-operating capacity of system, length of lino and the phase angle difference of sources both sides of the closing resister.

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  • 车体外部安装指示灯(LED防爆),不得少于6(一直电源)。

    Car body external indicator light (led explosion-proof type), need installed on both sides of each car shall not be less than 6 light (a car has been flow power supply).

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  • 针对这种情况,保护原理超越情况进行分析,对距离保护电源线路保护配合提出看法。

    In this connection, the override is analyzed in terms of protection principles. Suggestions on protection coordination of short line with duplicate supply are put forth as well.

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  • 所有模拟电源管理胶连”的进入让一个单一设备实现了整合提高了性能降低了整个系统成本

    Sweeping all the analog and power management "glue" into a single device achieves integration, improves sequencing performance, and reduces overall system cost.

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  • 接通电源轧剪开关推上

    Make sure switch is OFF before turning on power.

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  • 分析电网中频电源交流谐波特性,并针对中频电源提出了几种谐波抑制措施

    So harmonic current should be suppressed firstly rather than harmonic voltage. The harmonic characteristic on the network side and the ac side of medium-frequency power supply is analyzed.

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  • 本文针对目前光电混合式电流互感器高压电源要求提出了光推动在线电源两个方案

    In the paper aiming at the demand of power supply in the passing hybrid fiber current, we lodge two projects: laser-driving and online to provide power.

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  • 种尘肺病治疗诊断装置包括具有可移动面的床体,在床面上下两对置设置一电磁线圈,使床面置于强磁场之中,电磁线圈外接磁化电源

    The said apparatus includes a movable bed, a set of electromagnetic coils oppositely mounted over and below the bed, and a magnetizing supply for electromagnetic coils.

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  • 针对统一潮流控制器逆变变换过程中所具有直流电压不断波动的特点,提出动态SPWM方法,以克服逆变电源的直流电压波动对SPWM法的逆变输出精确性所造成的影响。

    Taking account of the voltage floating of the DC side of Unified Power Flow Controller in working process, a dynamic SPWM method is proposed, to promote the accuracy of the output of the inverter.

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  • 针对传统电流突变量和电压突变量元件不能同时满足强弱电源系统保护要求缺点提出新的突变量选相原理。

    A novel fault phase selector by fault component of compensation voltage based on traveling wave is presented for high-speed protection.

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  • 针对传统电流突变量和电压突变量元件不能同时满足强弱电源系统保护要求缺点提出新的突变量选相原理。

    A novel fault phase selector by fault component of compensation voltage based on traveling wave is presented for high-speed protection.

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