2711-K5A5

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選擇深圳長(zhǎng)欣,選擇放心,售后無(wú)憂(yōu)
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描述

2711-K5A5

處理故障電容器應(yīng)在斷開(kāi)電容器的斷路器,拉開(kāi)斷路器兩則的隔離開(kāi)關(guān),并對(duì)電容器組經(jīng)放電電阻放電后進(jìn)行。電容器組經(jīng)放電電阻(放電變壓器或放電電壓互感器)放電以后,由于部分殘存電荷一時(shí)放不盡,仍應(yīng)進(jìn)行一次人工放電。放電時(shí)先將接地線(xiàn)接地端接好,再用接地棒多次對(duì)電容器放電,直至無(wú)放電火花及放電聲為止,然后將接地端固定好。由于故障電容器可能發(fā)生引線(xiàn)接觸不良、內(nèi)部斷線(xiàn)或熔絲熔斷等,因此有部分電荷可能未放盡,所以檢修人員在接觸故障電容器之前,還應(yīng)戴上絕緣手套,先用短路線(xiàn)將故障電容器兩極短接,然后方動(dòng)手拆卸和更換。
對(duì)于雙星形接線(xiàn)的電容器組的中性線(xiàn)上,以及多個(gè)電容器的串接線(xiàn)上,還應(yīng)單獨(dú)進(jìn)行放電。
電容器在變電所各種設(shè)備中屬于可靠性比較薄弱的電器,它比同級(jí)電壓的其他設(shè)備的絕緣較為薄弱,內(nèi)部元件發(fā)熱較多,而散熱情況又欠佳,內(nèi)部故障機(jī)會(huì)較多,制造電力電容器內(nèi)部材料的可燃物成分又大,所以運(yùn)行中極易著火。因此,對(duì)電力電容器的運(yùn)行應(yīng)盡可能地創(chuàng)造良好的低溫和通風(fēng)條件。

產(chǎn)品承諾:
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢(shì)價(jià)格,大量現(xiàn)貨。

主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌:ABB???,AB??,GE,FOXBORO,本特利,英維思,伍德沃德,西屋,瑞恩,施耐德,西門(mén)子,摩托羅拉,安川。力士樂(lè)。ACSO,橫河等進(jìn)口品牌。 專(zhuān)業(yè)銷(xiāo)售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA
? 專(zhuān)業(yè)銷(xiāo)售進(jìn)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(guó)內(nèi)實(shí)力庫(kù)存商家

Agilestar – 02312189-AS – For Huawei – New in Box

Agilestar – AFCT-5710APZ-AS – For Agilent-Avago – New i

Agilestar – FTLF1321P1BTL-A?S – For Finisar – New in Box

Agilestar – SPBD-155E4J1RT-?AS – For Delta – New in Box

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Agilestar – AS-OC12-IR1 – For Agilestar – New in Box

Agilestar – AS-OC12-LR1 – For Agilestar – New in Box

Agilestar – 10053 – For Extreme Networks – New in Box

Agilestar – 2311204 – For use in Huawei – New in Box

Agilestar – 3CSFP97 – For use in 3Com – New in Box

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Agilestar – AFCT-5764APZ – For Aglilent Avago – NIB

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Agilestar – 808-38302-AS – For IMC Networks – New in Bo

Agilestar – AFCT-5760TPZ- For Aglilent Avago – NIB

Agilestar – 10063 – For Extreme Networks – New in Box

Agilestar – AFCT-5710PZ-AS – For Agilent-Avago – New in

Agilestar – LCP-4250B4QDRT-?AS – For Delta – New in Box

Agilestar – OC12-SFP-SR – For Alcatel-Lucent – NIB

Agilestar – DEM-314GT – For use in D-Link – New in Box

Agilestar – TN-GLC-T – For Transition Networks – NIB

Agilestar – TN-SFP-LX3 – For Transition Networks – NIB

Agilestar – 3CGBIC97 – For use in 3Com – 1000Base-LX

Agilestar – 3CSFP85 – For use in 3Com – 100BASE-BX10-D

Agilestar – 3CSFP9-81 – For use in 3Com – 100BASE-FX

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Agilestar – GP-SFP2-1F – For Force 10 Networks – NIB

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Agilestar – JD498A – For HP – New in Box

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Agilestar – TEG-GBS40 – For use in TRENDnet New in Box

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Agilestar – SF155-SMRF13-AS – For FibroLAN – New in Box

Agilestar – SF155-SMRF15-AS – For FibroLAN – New in Box

Agilestar – SF2G-LX3-3-AS – For FibroLAN – New in Box

Agilestar – 3CSFP86 – For use in 3Com – New in Box

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專(zhuān)業(yè)銷(xiāo)售進(jìn)口DCS? PLC系統(tǒng)備件模塊

PLC模塊,可編程控制器,CPU模塊,IO模塊,AI模塊,通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家


選擇深圳長(zhǎng)欣,選擇放心,售后無(wú)憂(yōu)大量現(xiàn)貨,當(dāng)天順豐發(fā)貨!
主營(yíng):本特利,英維思,伍德沃德,??怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門(mén)子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè),ACSO,力士樂(lè)等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”(不管能不能看懂,先了解個(gè)大概,以便學(xué)習(xí)編程時(shí)查找);
2、由位控邏輯入手,逐漸增加定時(shí)、計(jì)數(shù)等條件,把或、與、非關(guān)系理順;
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類(lèi)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(gè)物理回路驗(yàn)證,比如變頻器+電機(jī)+測(cè)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(shí)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(jī)器人配件DSQC系列和Motorola MVME系列,GE 卡件 模塊 驅(qū)動(dòng)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(xué)會(huì)一種至于其它的學(xué)習(xí)起來(lái)也就簡(jiǎn)單了。