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DONGYANG F&C 氫氧化鈉自動閥
BDD-1000S BDD-1100S BDD-1200S BDD-1300S BDD-1400S BDD-1500S
BDD-2000S BDD-2100S BDD-2200S BDD-2300S BDD-2400S BDD-2500S
BDD-3000S BDD-3100S BDD-3200S BDD-3300S BDD-3400S BDD-3500S
BDD-1010S BDD-1110S BDD-1210S BDD-1310S BDD-1410S BDD-1510S
BDD-2010S BDD-2110S BDD-2210S BDD-2310S BDD-2410S BDD-2510S
BDD-3010S BDD-3110S BDD-3210S BDD-3310S BDD-3410S BDD-3510S

　　(4)通電前要對零序保護系統(tǒng)進行整定，確保保護工作正常。零序電流保護有什么特點零序電流保護的特點是：只反應(yīng)單相接地故障。因為系統(tǒng)中的其他非接地短路故障不會產(chǎn)生零序電流，所以零序電流保護不受任何故障�！　≡诂F(xiàn)在的很多電工嚴(yán)重，將這些功率全部都加起來就可以了，其實這也是不對的，對于用電的設(shè)備來說，我們一方面是要將所有的電器設(shè)施都要計算上，里面的機床同樣是很關(guān)鍵的，還有電焊機等等，都是應(yīng)該要注意到的。我們在計算好這些功率以后，其實有經(jīng)驗的電工是要有一個系數(shù)的，這個系數(shù)就是為我們在以后增加機床設(shè)備使用到的，的進行下溝通，有什么樣的要求的，我們同樣要按照這些要求來執(zhí)行的。

BDD-1020S BDD-1120S BDD-1220S BDD-1320S BDD-1420S BDD-1520S
BDD-2020S BDD-2120S BDD-2220S BDD-2320S BDD-2420S BDD-2520S
BDD-3020S BDD-3120S BDD-3220S BDD-3320S BDD-3420S BDD-3520S
BDD-1001S BDD-1101S BDD-1201S BDD-1301S BDD-1401S BDD-1501S
BDD-2001S BDD-2101S BDD-2201S BDD-2301S BDD-2401S BDD-2501S
BDD-3001S BDD-3101S BDD-3201S BDD-3301S BDD-3401S BDD-3501S
BDD-1011S BDD-1111S BDD-1211S BDD-1311S BDD-1411S BDD-1511S
BDD-2011S BDD-2111S BDD-2211S BDD-2311S BDD-2411S BDD-2511S

　　D、YR-ER101單晶硅差壓變送器輸出；流超過流量計量程值。暫停流量計與工藝員聯(lián)系，了解生產(chǎn)負荷和物料平衡情況。E、YR-ER101單晶硅差壓變送器輸出偏高：①負壓側(cè)管線、閥門等泄漏，檢查處理翻點。②引壓管線內(nèi)有液柱時，負引壓管內(nèi)或YR-ER101單晶硅差壓變送器負壓室內(nèi)有氣或液柱比正壓管內(nèi)液柱低。　　交流器，如CJ12交流器的使用壽命的長短，不僅取決于產(chǎn)品本身的技術(shù)性能，而且與產(chǎn)品的使用是否符合要求有很大關(guān)系，應(yīng)由專人負責(zé)，做好產(chǎn)品的日常與定期檢修工作，以確保全套設(shè)備的正常運行。定期檢修可利用停工時間進行，這樣可保證設(shè)備可靠工作，生產(chǎn)過程中發(fā)生故障停工的危險。

BDD-3011S BDD-3110S BDD-3211S BDD-3311S BDD-3411S BDD-3511S
BDD-1021S BDD-1121S BDD-1221S BDD-1321S BDD-1421S BDD-1521S
BDD-2021S BDD-2121S BDD-2221S BDD-2321S BDD-2421S BDD-2521S
BDD-3021S BDD-3121S BDD-3221S BDD-3321S BDD-3421S BDD-3521S
BDD-1002S BDD-1102S BDD-1202S BDD-1302S BDD-1402S BDD-1502S
BDD-2002S BDD-2102S BDD-2202S BDD-2302S BDD-2402S BDD-2502S
BDD-3002S BDD-3102S BDD-3202S BDD-3302S BDD-3402S BDD-3502S
BDD-1012S BDD-1112S BDD-1212S BDD-1312S BDD-1412S BDD-1512S
BDD-2012S BDD-2112S BDD-2212S BDD-2312S BDD-2412S BDD-2512S

　　〈五〉火焰揚聲器：當(dāng)空氣和煤氣燃燒的火焰通過電極，電極加有直流電壓和高頻信號，火焰受音頻信號調(diào)制而發(fā)聲�；鹧鎺缀鯚o質(zhì)量，聲音動態(tài)較好。但它有致命的缺點：不安全，不方便。〈六〉氣流調(diào)制揚聲器：又稱氣流揚聲器�！　∷臄�(shù)值為0.03/0.1/0.3/0.5A幾種。Ir0——斷路器預(yù)動作電流A，它所指的含義是該斷路器負載電流超出預(yù)先設(shè)定的電流時，預(yù)裝置發(fā)出指示信 ，它的數(shù)值為0.5～lIr1左右可調(diào)。Ir2——短延時脫扣器的脫扣時間整定值s，可調(diào)時間為0.05～0.45s。

BDD-3012S BDD-3110S BDD-3212S BDD-3312S BDD-3412S BDD-3512S
BDD-1022S BDD-1122S BDD-1222S BDD-1322S BDD-1422S BDD-1522S
BDD-2022S BDD-2122S BDD-2222S BDD-2322S BDD-2422S BDD-2522S
BDD-3022S BDD-3122S BDD-3222S BDD-3322S BDD-3422S BDD-3522S
BDD-1003S BDD-1103S BDD-1203S BDD-1303S BDD-1403S BDD-1503S
BDD-2003S BDD-2103S BDD-2203S BDD-2303S BDD-2403S BDD-2503S
BDD-3003S BDD-3103S BDD-3203S BDD-3303S BDD-3403S BDD-3503S
BDD-1013S BDD-1113S BDD-1213S BDD-1313S BDD-1413S BDD-1513S
BDD-2013S BDD-2113S BDD-2213S BDD-2313S BDD-2413S BDD-2513S
BDD-3013S BDD-3110S BDD-3213S BDD-3313S BDD-3413S BDD-3513S
BDD-1023S BDD-1123S BDD-1223S BDD-1323S BDD-1423S BDD-1523S

　　其中常開觸點又分為主觸頭和輔助觸頭。常開觸點——不通電狀態(tài)下是斷開狀態(tài)，線圈通電后閉合。常閉觸點——不通電狀態(tài)下是閉合狀態(tài)，線圈通電后斷開。主觸頭——全部都是常開觸點，只能接在主回路中。輔助出頭——只能接在控制回路中�！　∵@個方法的優(yōu)勢在于：可以選用小型的剩余電流互感器測量精度;后期如果互感器出現(xiàn)故障時，方便。具體接線示意圖如圖所示。圖TN-S系統(tǒng)總剩余電流接線方法2.剩余電流互感器的安裝位置剩余電流互感器應(yīng)該安裝在便于檢修的地方，盡量遠離強磁場。

BDD-2023S BDD-2123S BDD-2223S BDD-2323S BDD-2423S BDD-2523S
BDD-3023S BDD-3123S BDD-3223S BDD-3323S BDD-3423S BDD-3523S
BDD-1004S BDD-1104S BDD-1204S BDD-1304S BDD-1404S BDD-1504S
BDD-2004S BDD-2104S BDD-2204S BDD-2304S BDD-2404S BDD-2504S
BDD-3004S BDD-3104S BDD-3204S BDD-3304S BDD-3404S BDD-3504S
BDD-1014S BDD-1114S BDD-1214S BDD-1314S BDD-1414S BDD-1514S
BDD-2014S BDD-2114S BDD-2214S BDD-2314S BDD-2414S BDD-2514S
BDD-3014S BDD-3110S BDD-3214S BDD-3314S BDD-3414S BDD-3514S
BDD-1024S BDD-1124S BDD-1224S BDD-1324S BDD-1424S BDD-1524S
BDD-2024S BDD-2124S BDD-2224S BDD-2324S BDD-2424S BDD-2524S
BDD-3024S BDD-3124S BDD-3224S BDD-3324S BDD-3424S BDD-3524S

 　　對于一個繞組而言，若規(guī)定了它的進出線的位置，按上圖個線圈是由第1槽進線(它位于N極），可以確定電流的流向是向上。而電流不管匝數(shù)有多少電流總是由第8槽流出（它位于S極），故電流的流向必定是向下的。又由于第2槽與第1槽同處于N極，故第2槽的電流方向與第1槽相同，同是向上。　　在勻強磁場中，磁感應(yīng)強度與磁通的關(guān)系可以用公式表示為式中：B——勻強磁場的磁感應(yīng)強度，單位制單位T（特斯拉）——與B垂直的某一截面積上的磁通，單位制單位Wb（韋伯）S——與B垂直的某一截面面積，單?。