51305776-100/51305759-100
51305776-100/51305759-100
您邁開詢價(jià)的一小步,我還您成功的一大步。
你只看了我們的價(jià)格卻沒看到我們的質(zhì)量,別人有別人的高仿,我們有的是原裝正品,我們的產(chǎn)品與服務(wù)能支撐起一個(gè)團(tuán)隊(duì)和公司,現(xiàn)在的市場(chǎng),眼花繚亂的產(chǎn)品實(shí)在太多,唯有真正的品質(zhì)才是制勝的法寶,品質(zhì)就等于信任,信任就等于財(cái)富,擁有您的信任就是我zui大的財(cái)富。請(qǐng)不要再猶豫,不要再迷失,趕緊來電!
蘇妙玲13394057292+微X號(hào)
只愿得一人詢,長(zhǎng)久合作下去
我不愿錯(cuò)過你……
正大承諾:
1、保證全新原裝進(jìn)口
2、保證安全準(zhǔn)時(shí)發(fā)貨
3、保證售后服務(wù)質(zhì)量
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓掃一掃,你要的價(jià)格,這個(gè)姑娘都知道

----------------- 速購(gòu)專線 ---------------------------
仲鑫達(dá)菜譜
主食:AB,施耐德和GE ABB 本特利 英維思 黑馬
四菜一湯:AB 1769、1756、1747、1785,
ABB DCS.OCS,GE燃機(jī)備件IS200 IS215 DS215,本特利3500系列!
餐后水果:仲鑫達(dá)自動(dòng)化電氣
----------------- 廈門仲鑫達(dá)自動(dòng)化設(shè)備有限公司 -------------------
為何我公司許多產(chǎn)品的價(jià)格更有優(yōu)勢(shì)?
(1)源頭采購(gòu),減少中間環(huán)節(jié)差價(jià)
(2)渠道穩(wěn)定,貨源更有保障
貨期問題
(1)庫(kù)存現(xiàn)貨產(chǎn)品,簽訂合同付款后,當(dāng)天即可安排發(fā)貨
(2)訂貨產(chǎn)品,根據(jù)報(bào)價(jià)貨期發(fā)貨
l Invensys Foxboro(??怂共_):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場(chǎng)輸入/輸出模塊)順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)據(jù)通信及處理等。
l Invensys Triconex: 冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余(TMR)結(jié)構(gòu)的現(xiàn)代化的容錯(cuò)控制器。
l Westinghouse(西屋): OVATION系統(tǒng)、WDPF系統(tǒng)、WEStation系統(tǒng)備件。
l Rockwell Allen-Bradley: Reliance瑞恩、SLC500/1747/1746、MicroLogix/1761/1763/1762/1766/1764、CompactLogix/1769/1768、Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。
l Schneider Modicon(施耐德莫迪康):Quantum 140系列處理器、控制卡、電源模塊等。
l ABB:工業(yè)機(jī)器人備件DSQC系列、Bailey INFI 90等。
過壓保護(hù)裝置可由四部分組成:前級(jí)高額定(高殘壓)浪涌保護(hù)器,檢測(cè)???,動(dòng)作機(jī)構(gòu),后級(jí)低額定(低殘壓)浪涌保護(hù)器。顯而易見這樣一來解決了上述矛盾,這里就不細(xì)說了。關(guān)于動(dòng)作機(jī)構(gòu)的設(shè)計(jì)挺有講究,簡(jiǎn)要的說需考慮寬范圍、能自動(dòng)恢復(fù)等;而這里就重點(diǎn)談一下檢測(cè)??斓倪x型與應(yīng)用。在此方案中檢測(cè)??炜梢哉f是核心,選擇不當(dāng)不僅本身的故障率較高,又不能達(dá)到方案的預(yù)期保護(hù)效果。
監(jiān)測(cè)模快的選型與應(yīng)用
所以該模塊需有下列要求:
1.電源直接取自被監(jiān)視電壓,但能承受至少2KV的峰值電壓;
2.為適應(yīng)開關(guān)電源的寬范圍過壓點(diǎn)在275V,恢復(fù)點(diǎn)在265V,欠壓點(diǎn)在150V,恢復(fù)點(diǎn)在160V;
3.保護(hù)不要延時(shí),檢測(cè)到故障及時(shí)切斷電源;但恢復(fù)正常要延時(shí),這樣可以使設(shè)備避過復(fù)雜的過渡過程,如在交流停電到來電,很多設(shè)備都在這時(shí)刻損壞,因?yàn)榇嬖诮涣魍k姇r(shí)好多設(shè)備是不斷電的,而當(dāng)來電時(shí)好多設(shè)備是同時(shí)啟動(dòng),那么此刻的電網(wǎng)的情況就十分復(fù)雜。另外雷電也不是一個(gè)單一的波,他可能持續(xù)一斷時(shí)間,可以使設(shè)備避開后續(xù)的雷電波。
4.選用帶中心線的電壓監(jiān)測(cè)模塊動(dòng)作判定的依據(jù)是相電壓,只要任一相電壓超過正常范圍而動(dòng)作而不是間接的參數(shù)線電壓,從而有效的保護(hù)嚴(yán)重的三相不平衡與相線對(duì)地短路引起的過電壓。
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