AONE/A-ONE AUTOVALVE,AD50-25F 25A 1″報(bào)價(jià)中山立訊電氣有限公司直銷中山立訊電氣有限公司銷售韓國(guó)DONGYANG F&C 氫氧化鈉自動(dòng)閥
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DONGYANG F&C 氫氧化鈉自動(dòng)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
答：電流互感器一次側(cè)也標(biāo)有P1、P2或L1、L2字樣，一次側(cè)從P1或L1流入電流互感器的一次電流與二次側(cè)電流互感器S1端子流出的電流相位是一致的，在接用有方向性的儀表如：電度表、功率表等時(shí)，要注意接線的的極性，如果接只用電流表，極性反正都不影響電流表的指示。 電位移矢量D與有介質(zhì)時(shí)的高斯定理介電常數(shù)高斯定理是建立在庫(kù)侖定律的基礎(chǔ)上的，在有電介質(zhì)存在時(shí)，它也成立，只不過計(jì)算總電場(chǎng)的電通量時(shí)，應(yīng)計(jì)及高斯面內(nèi)所包含的自由電荷q0和極化電荷q'：（1）前面我們推導(dǎo)過下列公。
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
:通俗點(diǎn)說，交流器里面相當(dāng)于有兩塊電磁鐵，給它的線圈通電，兩塊磁鐵就會(huì)吸合在一起，它的作用都是通過這簡(jiǎn)單的原理實(shí)現(xiàn)的。舉個(gè)簡(jiǎn)單的例子，啟停開關(guān)和線圈串聯(lián)在一個(gè)低壓線路中，主觸點(diǎn)與電機(jī)電源線串聯(lián)，主觸點(diǎn)一般是常開的，按啟動(dòng)按鈕，線圈通電后，主觸點(diǎn)閉合，電機(jī)通電，按停止按鈕，線圈斷電，主觸點(diǎn)分開，電機(jī)斷電。
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
造成異步電動(dòng)機(jī)空載電流過大的原因有如下幾種：①、電源電壓太高：當(dāng)電源電壓太高時(shí)，電機(jī)鐵芯會(huì)產(chǎn)生磁飽和現(xiàn)象，導(dǎo)致空載電流過大。②、電動(dòng)機(jī)因修理后裝配不當(dāng)或空隙過大。③、定子繞組匝數(shù)不夠或Ｙ型連接誤接成△形接線。 為保證計(jì)量的準(zhǔn)確性，一般要求電流互感器的二次負(fù)荷S2必須在額定二次負(fù)荷S2N的25%~100%范圍內(nèi)，即:0.25S2N≤S2≤S2N額定功率因數(shù)的確定額定功率因數(shù)的確定額定功率因數(shù)的確定額定功率因數(shù)的確定計(jì)量用電流互感器額定二次負(fù)荷的功率因數(shù)應(yīng)為0.8~1.0。
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
無功功率計(jì)算公式無功功率=I*U*sinφ,單位為乏或千乏.有功功率計(jì)算公式有功功率P=IUCOSφ其實(shí)有功功率P、無功功率Q、視在功率S就是一直角三角形的三條變：S為斜邊，P、Q為兩直角變，P、Q就是把S正交分解出來的兩個(gè)分量；P^2+Q^2=S^2（勾股定理）。 為了認(rèn)識(shí)微分作用，先來看看手動(dòng)操作過程，假設(shè)有一工藝參數(shù)在變化，操作工發(fā)現(xiàn)這個(gè)參數(shù)上升較快，估計(jì)很快就會(huì)有比較大的偏差，這時(shí)，操作工就會(huì)多開大閥門來克服這個(gè)預(yù)期的偏差了這種估計(jì)及提前開大閥門的超前行為，就是微分動(dòng)作。
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
這類電動(dòng)機(jī)的二次繞組中大多串接有離心式啟動(dòng)開關(guān)，正確接線時(shí)，啟動(dòng)電容應(yīng)和離心式開關(guān)串聯(lián)，再和運(yùn)行電容進(jìn)行并聯(lián)。單相雙電容電動(dòng)機(jī)的正確接線方法如圖所示。當(dāng)電動(dòng)機(jī)啟動(dòng)以后，一旦電動(dòng)機(jī)的轉(zhuǎn)速達(dá)到額定轉(zhuǎn)速的80%左右時(shí)，離心開關(guān)的觸點(diǎn)就會(huì)斷開，從而切斷了啟動(dòng)電容與電路的連接，此時(shí)電動(dòng)機(jī)電流減小，電動(dòng)機(jī)進(jìn)入了正常的運(yùn)行狀態(tài)。 3.保持滑動(dòng)變阻器R1好的觸頭位置不變，閉合電鍵S2。4.電阻箱R2的阻值，使電流表G指針半偏。5.讀取R2的示數(shù)，該示數(shù)即為電流表G的內(nèi)阻。上述實(shí)驗(yàn)是有系統(tǒng)誤差的，這也是此實(shí)驗(yàn)的必考點(diǎn)。誤差分析，在這篇半偏法及其誤差中有詳細(xì)的解釋。