查询词典 frequency relay

The Company mainly operates and acts asthe agent for the following products including:frequency conversioncabinet,frequency converter,soft starter,automated controlsystem,series of low-voltage circuit breaker,contactor,controlrelay,protective relay,knife switch,isolating switch,capacitor,dualpower switching unit,low-voltage mutual inductor,low-voltagefuse,high-voltage vacuum circuit breaker,high-voltage mutualinductor,high-voltage load switch,high-voltage fuse,microcomputerintegrated protection device and components and parts includingautomatic control products, Lights,button,terminal,electric metersand electromechanical products including pump,valvefan,motor,voltage transformer,wires and cables.

公司主要经营及代理的产品有：变频柜、变频器、软启动器、自动化控制系列及系列低压断路器、接器、控制继电器、保护继电器、刀开关、隔离开关、电容器、双电源切换装置、高压真空断路器、高低压互感器、高压负荷开关、高低压熔断器、微机综合保护装置及自动化控制产品、信号灯、按钮、端子、电度表等元器件及水泵、阀门、风机、电机、变压器、电线电缆等机电产品约1000多个品种、20000余种常用规格。

This paper describes a microstrip upper frequency converter which is used in the 2GHz radio relay as a transmitting mixer of the microwave integrated transmitter.

本文论述的微带上变频器是在2GHz中继通信中作为微波集成发信机的发信混频部件。

The methods of theory analyses and digital simulation have been used in this thesis and several schemes of strapdown guidance law based on analyzing the performance of several classical guidance laws have also been present according to the characteristics of strapdown Anti-Radiation homing seeker. The stapdown guidance systems were built for a certain Anti-Radiation missile, adopting acceleration autopilot and the attitude autopilot, and the paper has focus on analyzing the performance of low frequency strapdown Anti-Radiation homing seeker. The Approaches of lead correction and dead-zone relay control were given to improve the guidance precision, and also the increasable observability law was attempt and validate.

本文采用理论分析和仿真实验相结合的方法，在对经典制导律进行理论分析和验证的基础上，针对捷联反辐射导引头的特点，提出了捷联制导律多种设计方案，并以某型反辐射导弹为应用背景，分别采用姿态角反馈自动驾驶仪和过载反馈自动驾驶仪构造了捷联制导系统，重点基于反辐射导引头的低频端特性，开展了捷联制导律的导引性能对比分析工作，提出了应用超前校正和带死区继电控制提高制导精度的方法，并对提高可观测性的捷联制导算法的实现思路进行了尝试和验证。

Taking CSL-102 and WXH-15 computer protection as examples,introduces the work principle of working frequency variable direction relay,analyzes the malfunction of closed abrupt direction high frequency protection on closing the ring ,and puts forward the material improvement measures.

以CSL-102和WXH-15型微机保护为例，介绍了工频变化量继电器的工作原理，对闭锁式突变量方向高频保护在系统合环时的误动情况进行了分析，并提出了具体的改进措施。

The communication systems wildly used nationally and internationally, such as audio frequency wire communication, carrier-current communication, micro-wave communication, optic-fiber communication, expanding frequency communication and satellite relay communication, are investigated in detail. The different communication systems used in Changsha County electric power systems are analysed in detail.

对目前国内外使用较多的一些通信方式如音频线通信、载波通信、微波通信、光纤通信、扩频通信、卫星帧中继通信等进行了较为深入的分析和研究；对目前长沙电力局正在使用的变电站与调度端的通信方式——进行性价比方面的分析比较，综合以上，得出了最为合适的变电站到调度端的通信方式。

Mark needle ; phase and frequency correct PWM mode ; high frequency electromagnetic valve ; DC relay ; ATmeag16; CH341T

标记针；相频修正PWM模式；高频电磁阀；直流继电器； ATmeag16； CH341T

The best output load frequency of AC solid state relay list in this manual is below 60Hz(such as power frequency 50Hz).

本册说明书所列交流固态继电器最佳输出负载频率为60hz以下（如工频50Hz）。

At first the Digital frequency shifting repeater transforms the original signal to the 70MHz IF signal in the donor, then the Frequency shift relay digital processing unit Digital Spread Spectrum the IF signal and through the 5.8GHZ signal to transmit to the remote end.

数字移频直放站首先在近端机内将将信源信号转换为数字70MHZ中频信号，通过&移频中继数字处理单元&将中频信号数字扩频后通过5.8GHZ的信号传送到远端。

Main business: swp series pressure transmitter; thermal instrumentation; temperature and humidity, liquid level, flow, pull, such as weighing sensors, transmitter; ammeter, voltage meter, note the number of mind-meter, and frequency tables, tachometer time relay, temperature controller, PID regulator, etc.; water level control devices and the water level electrode, logger and related supplies; frequency converter, soft start, programmable controllers, industrial control and other support.

主营业务：swp系列压力变送器；热工仪表；温湿度、液位、流量、称重拉力等传感器、变送器；电流表、电压表、记数记米器、频率表、转速表时间继电器、温控仪、PID调节器等；水位控制仪及水位电极、记录仪及相关耗材；变频调速器、软启动器、可编程控制器、工控配套等。

The alarm signal came from audio frequency coding chip of telephone annunciator is sent to relay connected big screen lamp-box via I/O interface of 12887 chip. If a person dials alarm numbers, the signal can be automatically sent into big screen, circuitry of PLC relay in area correspond with big screen can close. Color lamp flickers to realize auto-alarm of fire protection of bulk plant.

来自电话报警器音频译码芯片的报警信号，经12887芯片I/O口传给与大屏幕灯箱相连的继电器，当报警人拨通报警号码，信号通过报警器自动传入大屏幕，大屏幕相应区域的PLC继电器线路闭合，彩灯发出闪烁信号报警，实现油库消防自动报警。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。