GE IC693MDL655

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描述

GE IC693MDL655
工程師設計功率監(jiān)控系統(tǒng)應該根據(jù)具體的特性謹慎選擇所需要的電流互感器:

精確度。在大多數(shù)應用場合,測量精確度對整個系統(tǒng)的效率有著直接的影響。功率測量的精確程度主要取決于電流互感器的精確度。一級功率表可能需要精確度高于1%的電流互感器,而該精確度一般與昂貴的材料和制造工藝相關。其替代方案是對所應用的每一臺互感器都對功率表進行標定??紤]到每臺互感器的具體特性,允許將功率表設定在其最精確的操作模式以及將變量從一臺互感器傳遞到另外一臺互感器。正如文中所述對于線性度、漂移和可重復性以及對其整體不精確的讀數(shù)進行補償,開啟了各種新技術研究的大門。
漂移?;ジ衅鞯钠婆c初始系統(tǒng)標定無關的讀數(shù)超時持續(xù)性有關。其特性的一些變化可能由于周圍環(huán)境濕度和溫度或元件老化等原因引起。漂移電位低意味著互感器對這些限制因素具有很高的抵抗能力,是構建高性能穩(wěn)定可靠功率表的一個非常重要的特性。
線性度?;ジ衅鞯木€性度指的是在整個操作模式范圍內(nèi)其特性的穩(wěn)定性。模擬感應部件的高線性度對大范圍一次電流進行精確測量來說必不可少,尤其是在低電流值的情況下。
相移。實際有功功率或能量測量的精確度不僅與交流電流和電壓互感器的精確度和線性度的幅度有關,而且與兩個相關值測量之間可能發(fā)生的相移有關。當然,相移應該盡可能的低。
集成。由于采用自供電,因此除了接到主要功率監(jiān)控裝置的兩根輸出線之外,電流互感器不需要任何其他的接線。很多這種互感器都提供經(jīng)過標定的標準輸出,以便在功率監(jiān)控系統(tǒng)中進行集成。典型的1A和5A或333mV輸出均與市場上的大多數(shù)標準功率表相匹配。高精度功率表需要根據(jù)每臺互感器進行特定的標定。然后這些互感器可能會產(chǎn)生低電流輸出,在系統(tǒng)運行過程中接觸這些低電流會比傳統(tǒng)的1A/5A信號要安全。此外,電流輸出幾乎不受干擾的影響,因此當需要采用長距離導線將互感器連接至功率表時,應優(yōu)先選用電流信號輸出而非電壓信號輸出。

產(chǎn)品承諾:
保?證?全新原裝進口,
保?證?安全準時發(fā)貨,
保?證售后服務質(zhì)量,
優(yōu)勢價格,大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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? 專業(yè)銷售進口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實力庫存商家

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DiCon GP700M Programmable Fiber Multi Switch 1×4

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15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實力庫存商家


選擇深圳長欣,選擇放心,售后無憂大量現(xiàn)貨,當天順豐發(fā)貨!
主營:本特利,英維思,伍德沃德,福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂,ACSO,力士樂等各大品牌的DCS系統(tǒng)配件,機器人系統(tǒng)配件,大型伺服系統(tǒng)備件。

先介紹幾點經(jīng)驗。
1、先通讀一遍“系統(tǒng)手冊”(不管能不能看懂,先了解個大概,以便學習編程時查找);
2、由位控邏輯入手,逐漸增加定時、計數(shù)等條件,把或、與、非關系理順;
3、進而練習整數(shù)運算、實數(shù)運算、類型轉(zhuǎn)換;
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解(最好是有個物理回路驗證,比如變頻器+電機+測速傳感器);
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制(盡量避免跳轉(zhuǎn),非跳不可時也是跳的越近越好);
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機器人配件DSQC系列和Motorola MVME系列,GE 卡件 模塊 驅(qū)動器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌,由于PLC的基本框架大同小異,學會一種至于其它的學習起來也就簡單了。