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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
(3)磁化強度對任意閉合回路L的線積分等于回路所包圍的面積內的總磁化電流：.keke_ds{margin:10pxauto;display:block;cursor:pointer;width:134px;height:49px;background-image:url('source/plugin/keke_ds/tem 電流計算公式電流的大小是用單位時間內通過導線橫截面的電量（電流強度）來衡量，公式中通常用大寫字母I表示電流。用q表示單位時間內（字母t表示）通過導線橫截面的電量。電流計算公式如下：公式中，t作為時間單位用秒（s）計，電量q的單位用庫倫（c），而電量I的單位就是安培（A），這個大家初中都學過的。
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．用熱繼電器保護三相異步電動機時，至少需要用有兩個熱元件的熱繼電器，從而在不正常的工作狀態下，也可對電動機進行過載保護，例如，電動機單相運行時，至少有一個熱元件能起作用。當然，采用有三個熱元件帶缺相保護的熱繼電器�！ 三相，具體的區別是電動機接線盒中的不同，三個接線片，一般不進行隨便修改，我們只要了解他們的區別就行，圖2是星型，圖3是角型電動機內部有三組繞組，六個接線端，當把三個繞組的一端連在一起，而另一端分別接電源。
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
④停止控制按下停止按鈕2→KM1、KM2、KM3線圈均失電→KM1、KM2、KM3主觸點均斷開→電動機因供電被切斷而停轉。⑤斷開電源開關QS【提示】現場在連接電纜時，務必將電動機接線盒內各端子上的短接片取掉。星形-三角形啟動電路時電工必須掌握的電路，儀表工在現場時也經常碰到，所以儀表工業必須熟悉和掌握該電路的原理、接線和故障處理，多一門技能對大家工作百利而無一害。
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
大家知道，晶閘管G、K之間是一個PN結（a），相當于一個二極管，G為正極、K為負極，所以，按照測試二極管的方法，找出三個極中的兩個極，測它的正、反向電阻，電阻小時，萬用表黑表筆接的是控制極G，可以用剛才演示用的示教板電路。
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
但編碼器為并行輸出時在應用中應注意以下問題：1、必須是雷格碼，因為編碼器輸出如果是純二進制碼，在數據刷新時可能有多位變化，讀數會在短時間里造成錯碼。2、所有接口必須確保連接好。如有個別連接不良點，該點電位始終為0，會造成錯碼而無法判斷。 從張開始出現電弧一直到第三張，我們看到電弧陰極弧根始終跟著動觸頭運動，而后第四張陰極弧根才越過臺階進入滅弧室中。看到這里，相信大家一定會想到，這對于具體的斷路器來說，能產生什么作用呢。是：與斷路器的進線位置有關。