REF relay is a current relay with very high sensitivity or a voltage relay with very low acting power.

零差繼電器本身就是一只靈敏電流繼電器或動(dòng)作功率很小的電壓繼電器。

Abstracts: MMB1320B-type cylindrical grinder applies hydraulic pressure Systematic and electricity-control-mode drive to realize the motion of the working table and emery wheel rack.. This article improves the method of electricity control and uses PLC soft ware instead of a large amount of centre relay and time relay of relay control system to realize the control of hydraulic pressure so that we can save energy and enhance efficiency.

摘 要： MMB1320B 型外圓磨床采用液壓系統(tǒng)和電氣控制方式驅(qū)動(dòng)以實(shí)現(xiàn)工作臺(tái)和砂輪架的動(dòng)作九色国产，本文對(duì)其電氣控制方式加以改造亚洲无码大黄片，用 PLC 軟件取代繼電器控制系統(tǒng)中大量的中間繼電器、時(shí)間繼電器等以實(shí)現(xiàn)液壓系統(tǒng)的 PLC 控制美国黄色肥女一级电影，從而達(dá)到節(jié)能增效的目的无码毛片区免费毛片。

The problem was that the water pump could not pump in a nine-story residential building, as result the water would soon be used up. I arrived at night; found that liquid level relay broke down. then I installed a three-pole knife switch next to liquid level relay to power the pump manually, so the problem with no water to be solved provisionally. then I fitted the Level relay for them, finally the water pump can pump automatically again

有一次來電，物管說他們小區(qū)沒有電工国产一级黄在线观看播放，說一幢9層的住宅樓一樓的水泵泵不上水99精品高清一级毛片，水池很快就會(huì)無水用了，晚上我到達(dá)現(xiàn)場(chǎng)插插插操操，原來是液位繼電器壞了欧美26uuu，我當(dāng)時(shí)已帶上了三極的閘刀開關(guān)92国产在线第一页，在繼電器的旁邊裝上閘刀開關(guān)，手動(dòng)供電給水泵久免视频免费一区，臨時(shí)解決了沒水用的問題永久免费黄片啊啊啊，過后才為他裝上液位繼電器，又恢復(fù)了自動(dòng)泵水亚洲女生被插下体免费看网站。

The adaptive mho relay uses the adaptive control method to modify the mho relay that uses remembered voltage polarization. The modified relay can adapt to different earth resistance.

該繼電器利用自適應(yīng)控制方法對(duì)記憶電壓極化姆歐繼電器進(jìn)行了修改久久婷婷88A片，改后的繼電器具有對(duì)接地電阻的自適應(yīng)性，可以根據(jù)接地電阻的大小自動(dòng)地調(diào)整繼電器動(dòng)作邊界国产老妇伦国产熟女老妇视频。

The author provides a solution based on added-on restraint zone to the problem of TA saturation. The distance protection is another important content. The thesis compares the relays based on operation equation with relays based on distance measuring. And then puts forward some viewpoints in changeable characteristics Mho relay, grounding fault distance relay, delta-Z relay and the power system swing and protection blocking.

距離保護(hù)是本項(xiàng)目的另一個(gè)重要內(nèi)容igao视频为爱搞点激情入口，論文對(duì)常用的動(dòng)作方程式與測(cè)距式距離繼電器作了分析對(duì)比，對(duì)可變姆歐特性距離繼電器毛片?、接地距離繼電器欧美午夜一级艳片欧美精品炮另类、工頻變化量距離繼電器的性能、距離保護(hù)的振蕩閉鎖問題談了一些看法爱爱天堂网，確定了裝置距離保護(hù)的若干關(guān)鍵因素农民工出租屋嫖妓。

Firstly, the thesis discusses the abnormality and failure of ship motor and relevant relay-protection equipment. Because of the importance of ship motor relay-protection equipment and the problem existing in the students" experiment education, it"s necessary to inquire into the computer-controlled ship motor relay-protection experiment equipment.

本論文首先簡(jiǎn)要論述了船用發(fā)電機(jī)的不正常運(yùn)行和故障及其相應(yīng)的繼電保護(hù)，針對(duì)船用發(fā)電機(jī)繼電保護(hù)裝置的重要性和現(xiàn)有輪機(jī)人才在實(shí)驗(yàn)教學(xué)中存在的問題提出了研制本試驗(yàn)裝置的必要性亚洲综合图片日。

To meet this requirement, the new relay developed consists of a combination of directional overcurrent relay and directional undervoltage relay.

為滿足這一需求国产又硬又黄又粗视频，新開發(fā)的繼電器組成的組合定向過壓繼電器流保護(hù)繼電器和方向性的欠壓繼電器。

The RC loop parallel with the card formed an electric circuit on the series relay coil to excite the coil and make the contact maloperate.Therefor,it is suggested that a resistor or a capacitor be connected with the relay in parallel to lower the exciting voltage at both ends of the output relay.

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