交流电源

It is extensively used for different occasions that require DC power supply, including electrolytic chemistry, transmission, traction, electrostatic precipitation, electroplating and DC transmission etc.

整流变压器是指把电力网的三相正弦交流电压变换为所需要的交流整流电源的电压和相数的电源变压器，它广泛应用于点解化学、传动、牵引、静电除尘、电镀、直流输电等需要提供直流电源的场合。

CBB60 metallized ploypropylene film capacitor is used as a motor starting capacitor or a motor running capacitor in 50 HZ/60HZ AC singlephase motors.

CBB60型金属化聚丙稀电容器可用于频率50HZ/60HZ的交流电源供电的单相电动机的起动和运转。

When switch on the combined power supply in some mobile stations, AC leakage current breaker breaks off often.

针对部分移动基站的组合电源开通时，出现交流漏电流断路器经常跳开的现象，以DMA14-48/50风冷开关电源模块为例，分析了开关电源的漏电流产生原因，并对其漏电流值进行了计算和测试。

Exchange power supply system including electrical network height power source, kerosene engine power set emergency power supply (long time emergency power supply), integral part's UPS power source; The cocurrent power supply system by the rectifier, the accumulator cell (short time emergency power supply), the direct-current converter as well as the corresponding power distribution cabinet is composed; The good earth and the antimine device, may improve the correspondence quality, guarantees the communication facility and operator's security.

交流供电系统包括电网高低电源、油机发电机组备用电源、重要部门的UPS电源；直流供电系统则由整流器、蓄电池、直流变换器以及相应的配电柜组成；良好的接地和防雷装置，可以提高通信质量，确保通信设备及操作人员的安全。

AC Induction Motor Control Using the constant V/f Principle and a Natural PWM Algorithm (12 pages, revision A, updated 12/05) Induction motors can only run at their rated speed when they are connected to the main power supply. This is the reason why variable frequency drives are needed to vary the rotor speed of an induction motor.

使用V/F原理的交流电机控制和简单的PWM算法（12页，修订版A，更新时间：05年12月）交流电机在连接到电源时只能以其额定速度运转，所以要改变转速必须改变电源频率。

Input Power Factor Correction: The rectifier shall be power factor corrected so as to maintain an input power factor of 0.98 lagging to unity at all load levels to ensure generator compatibility and avoid reflected harmonics from disturbing loads sharing the utility power.

UPS模块的设计须可使之作为双变换和在线反向输送系统在下列模式下正常工作。A。正常模式：逆变器须可不断向临界负载输电。整流器/电池充电器须从交流电源获取电能并向逆变器供电，同时以浮动方式给电池充电。

When in 1995, the 380/220V exchange current lightning surge protector over voltage device had already been exploited in Tsing-HuaUniversity. Its design was accord with the nation and related international standard, and also confirmed by former China Electric Power Department and InstrumentQualityTestCenter.

早在1995年，根据国家和有关国际标准研制的380/220V交流电源用雷电浪涌过电压防护装置，通过了原中国电力工业部电力设备及仪表质量检验中心检测认证合格。

On the basis of introducing the motor structure, the self-exciting converting principle of SCLRM under three-phase AC supply is described.

在介绍电机结构的基础上，深入分析了SCLRM在三相交流电源下的自激换流工作原理。

This product connected to 220 volts AC power to operate after use, suitable for high-low pressure polyethylene, polypropylene films of the seal and cutting.

本产品接通220伏交流电源后即可操作使用，适合于高低压聚乙烯、聚丙烯薄膜的封口及切割。

The machine must be used with a properly grounded A.C.

机器必须在交流电源230V10A下使用。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。