380v

Fault Clearance of 380V Service Working Power Source Switch with Control Circuit

380V厂用工作电源开关控制回路故障处理

Analysis and Improvement of 380V Coal Feed Board Power Supply Loop Closing

380V给粉专用盘电源合环原因分析及改进方法

Methods : Making 380V dogs electric experiment model .

方法：建立380V电烧伤犬实验模型。

Discussion on the calculation of 380V grounded single phase short - circuit current

关于380V单相接地短路电流计算的探讨

Energy-saving Improvement of the 380V I and II Segment Bus System

380VⅠ、Ⅱ段系统节能改造

Analysis and improvement of reclosers for motors in 380V service power system

捷克200MW发电机组厂用380V电动机重合闸系统的分析与投运

Analysis and Application about the Feasibility of Manual Parallel Switch on 380V Bus Bar

380V母线手动并联切换可行性分析及应用

Unsafe hidden troubles in safety standard for 220 / 380V net

220/380V电网安全标准中的不安全隐患

50A / 380V Float Charging Power with Automatic Steady Voltage and Steady Current

50A/380V全自动稳压稳流浮充电电源

Development and application of frequency converter especially made for 500kW / 380V domestic drill rig

500kW/380V国产钻机专用变频器的研制与应用

The active power filter ( APF ) wildly used in 380V power system can suppress harmonic effectively .

有源滤波器（APF）作为治理谐波的有效手段，在380V低压系统已经得到了广泛应用。

This paper studies the optimal planning of low-voltage ( 220 ~ 380V ) network in rural area of our country .

本文针对我国农村低压电网（220～380V）的特点，以数学规划中的0&1混合整数规划模型为基础，建立了低压电网规划模型。

Finally , the system is tested , the experiment of instruction reactive current output and the connection of 380V grid are made .

最后进行了系统的调试，以及指令无功电流输出实验与380V并网实验。

Methods Selective arteriography was carried out 29 times for 26 extremities in 17 patients suffering from > 380V electrical injuries .

方法对17例损伤电压大于380V电损伤患者进行了26侧29例次选择性动脉造影，观察血管受损后的改变。

The way of neutral grounding in 380V LV distribution system was introduced and the characteristics of grounded and non grounded systems were analyzed .

本文介绍了380V低压配电系统中性点的接地方式，分析了接地与不接地系统特性。

The open-air wires of three-phase four-wire system are extensively used in supply main of 220V & 380V electric network of China .

在我国380/220伏电力网络中，广泛采用三相四线制架空线作为配电干线。

This paper briefly analyzes the criterion of choosing and utilizing low voltage ( 380V / 660V ) AC motor soft starters .

简要介绍了低压380V，660V交流电机软起动器的选用原则；

The prototype of 380V / 100kVA DVR can satisfy the design specification by simulating voltage dip when system was fault .

通过仿真系统故障时电压跌落，了解380V／100kVA动态电压调节器样机能够满足设计要求。

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

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。

Detail design process of a 380V / 600W high frequency electronic ballast for High Pressure Sodium lamp is given in Chapter III. It 's verified by simulation and experiment .

论文第三章详细阐述了380V高电压输入600W高频电子镇流器样机的设计过程，并对其进行了仿真及实验验证。

The paper presents the modification of wiring way for asynchronous motor supplied by 660V power system instead of 380V . The points which should be paid attention to are also given .

该文阐述了工矿企业推广采用660V供电系统时，原380V异步电动机绕组的改接线方法，并提出了改接线时应注意的问题。

380V alternating current is adopted , and in addition , regulator , booster and other electrical equipments are used to afford the power supply plan according to the requirements of test bench .

设计了采用380V交流电，通过调压器、升压器及其它电气设备提供试验台要求电压的供电方案。

Methods : The Experiment was divided into six groups , including : 380V AC , 220V AC , 220V DC , flame burned , hot metal burned and the control .

方法：本实验共分六组，包括380VAC组、220VAC组、220VDC组、火焰烧伤组、金属灼伤组及正常对照组。

This system is suitable for the low-voltage distribution field taking 220V 、 380V as working voltage . The network monitoring structure is perfect , stable and reliable , which can forecast electrical fire effectively .

本系统适用于以220V、380V为工作电压的低压配电领域，网络监控结构完善，稳定性和可靠性好，能够有效预警电气火灾。

In addition , the generator can provide a steady 380V three-phase alternating-current , which can drive heavy load tools such as a polishes an air-compressor and so on .

此外，发电机提供的380V三相交流电，作为辅助电源可带动打磨机、空气压缩机等电动工具。

Secondly , the paper designs and realizes the two level variable frequency heating power supply with line of 380V . The main circuit output ac square wave by adopting the technology of ac-dc-ac variable frequency and phase shift PWM .

随后，本文给出了380V电源供电的二电平变频加热电源的主电路和控制电路的设计与实现。其中，主电路采用交-直-交变频技术，输出交流方波电压；

The loss of the PFC stage is large at low line when bus voltage is regulated at 380V . Variable bus voltage ( 200V-400V ) is proposed to improve the efficiency of PFC stage at low line .

为了提高PFC级在低压输入时的效率，可以适当降低其输出电压。

The advantages of frequency conversion regulating speed technology are introduced , and pointed out that frequency conversion regulating speed technology is more riper on the motor with low voltage ( 380V ) small capacity ( below 250kW ) .

介绍了变频调速技术的优点，指出变频调速技术在低压（380V）小容量（250kW以下）电机上较为成熟。

To increase the voltage between fuel cell output and inverter input , a 100V DC input and 380V double DC output DC / DC converter applied in a fuel cell grid-connected power generation system is discussed in this thesis .

本论文研究的是一个输入电压为100V，输出±380V的DC/DC变换器，应用于燃料电池并网发电系统，完成燃料电池输出和并网逆变器输入之间升压功能。

A series of problems in the latest developments of electronic ballast are discussed in the thesis based on the detail design of the 600W electronic ballast provided with 380V high voltage input and the research of a novel low-frequency electronic ballast .

本文通过对一种380V高电压输入600W高频电子镇流器以及一种新型的低频方波电子镇流器的开发研究对高强度气体放电灯电子镇流器中的一系列问题展开了详细的讨论。