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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
2.2高導(dǎo)熱性LED芯片的電光轉(zhuǎn)換效率約為15％，其余85％轉(zhuǎn)換為熱能，由于芯片尺寸小、功率密度大，不及時散熱會使LED工作溫度升高，主要影響發(fā)光亮度減弱，使用壽命衰減，對亮度的影響是線性影響，對壽命的影響呈指數(shù)關(guān)系?！ ≈虚g繼電器的原理是將一個輸入信 變成多個輸出信 或?qū)⑿?放大（即增大繼電器觸頭容量）的繼電器。其實質(zhì)是電壓繼電器，但它的觸頭較多（可多達(dá)8對）、觸頭容量可達(dá)5-10A、動作靈敏。當(dāng)其他電器的觸頭對數(shù)不夠時，可借助中間繼電器來擴展他們的觸頭對數(shù)，也有通過中間繼電器實現(xiàn)觸電通電容量的擴展。
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
經(jīng)過調(diào)查發(fā)現(xiàn)由于有一臺電動機漏電，恰好工廠地線生銹斷開。強電經(jīng)過變頻器地線反串如變頻器主板。所以變頻器有單獨接地點，不要和電動機公用接地線。在TN-S系統(tǒng)中，電動機等電氣設(shè)備的金屬外殼，就應(yīng)該接地線，即PE線。
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
三相異步電動機轉(zhuǎn)速公式為：n=60f/p(1-s)f代表電源P為極對數(shù)n'代表轉(zhuǎn)差率s代表轉(zhuǎn)差率三相異步電動機轉(zhuǎn)速是分級的，是由電機的“極數(shù)”決定的。三相異步電動機“極數(shù)”是子磁場磁極的個數(shù)。定子繞組的連接方式不同，可形成定子磁場的不同極數(shù)?！ y量線路電動系測量機構(gòu)的轉(zhuǎn)動力矩方向和兩線圈中的電流方向有關(guān)，為了防止電動系功率表的指針反偏，接線時功率表電流線圈標(biāo)有“·”號的端鈕必須接到電源的正極端，而電流線圈的另一端則與負(fù)載相連，電流線圈以串聯(lián)形式接入電路中。
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
LED燈具負(fù)載端，一般由若干數(shù)量的LED串并聯(lián)組成，其工作電壓Vo=Vf*Ns，其中Ns表示LED串聯(lián)數(shù)量。LED的Vf隨溫度變動而變動，一般情況下，在原因恒定電流時，高溫時Vf變低，低溫時Vf變高。因此，高溫時LED燈具負(fù)載工作電壓對應(yīng)為VoL，低溫時LED燈具負(fù)載工作電壓對應(yīng)為VoH?！ ≡撓盗羞€包括冷白色和廣譜綠黃光LED，通常用于作物檢查。接下來，Lumileds將會推出150輻射模式的LUXEONSunPlus20LED產(chǎn)品。（文：LED網(wǎng)James）更多LED，請點擊LED網(wǎng)或公眾賬 （cnledw2013）。vardefaultImg="space_";//yourcodetobeexecutedafter1second$j(".newstext1img").one("load",);。
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
表2給出了考慮充電電容和并聯(lián)補償與否的四種組合方式下，其短路電流計算結(jié)果的變化情況。其中，C表示線路充電電容，S表示節(jié)點并聯(lián)補償，未列出的初值條件與經(jīng)典方法的設(shè)置相同。2.3節(jié)點電壓值的影響節(jié)點電壓的變化時，基于等值電壓源法的短路電流計算結(jié)果與電壓值保持線性關(guān)系，所以，表3僅列出了部分節(jié)點的計算結(jié)果比較?！ ?、對于成分分析，其取樣、轉(zhuǎn)換過程反應(yīng)較慢，反應(yīng)滯后以上五種控制系統(tǒng)中，各對象的特性大致如下：1、壓力對象τ不大，T也不大；2、流量對象τ與T都較小，約數(shù)秒至數(shù)十秒；3、液位對象τ很小，T稍大；4、溫度對象τ與T都較大，約為數(shù)分鐘至數(shù)十分鐘；5、成分對象τ與T都較大。
