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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
如選上一個規(guī)格50毫安太大會不起作用。選用漏電開關的額定動作時間是0·4s。二、15千瓦的支路用開關的選擇：設為空調三個支路、照明二個支路。廚衛(wèi)支路。衛(wèi)浴支路?？照{分三支路。選用2極2p型開關。每一支路的開關的額定電流是20A。 這是因為三相異步電動機的啟動電流很大(全壓啟動時的啟動電流能達到額定電流的4~7倍)，若用熔斷器作過載保護，則選擇熔斷器的額定電流就應等于或略大于電動機的額定電流，這樣電動機在啟動時，由于啟動電流大大超過了熔斷器的額定電流，使熔斷器在很短的時間內爆斷，造成電動機無法啟動。
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
在相同一次額定電流、相同額定輸出容量的情況下，電流互感器二次電流采用1A或5A，其結構和特性有較大的不同。采用1A比采用5A，其結構和特性有較大的不同。采用1A比采用5A的電流互感器匝數(shù)比大5倍，二次繞組匝數(shù)大5倍，開路電壓高，內阻大，勵磁電流小，制造的難度大，價格略高。
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
厚膜鉑熱電阻是20世紀70年代發(fā)展起來的溫度傳感器，采用了厚膜印刷工藝取代線繞電阻體、手工電阻值的工藝。儀表在本文介紹厚膜鉑熱電阻技術指標、特性及應用。1、特性與技術指標厚膜鉑熱電阻主要特性與薄膜鉑熱電阻基本相同，產(chǎn)厚膜鉑熱電阻的結構見圖1-圖4，其技術指標見表1?！ ? 其主要用于遠距離接通和分斷380伏以下的交流電路，開斷和控制電路，一般交流器主要利用主接點來開閉電路，用輔助接點來執(zhí)行控制指令，主接點一般只有常開接點，而輔助接點常有兩對具有常開和常閉功能的接點，小型的器也經(jīng)常作為中間繼電器配合主電路使用。
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
采用鋁合金振膜、玻璃纖維振膜的低音單元一般口徑比較小，承受功率比較大，而采用強化紙盆、玻璃纖維振膜的低音單元重播音樂時的音色較準確，整體平衡度不錯。Q0： 揚聲器單元的品質因數(shù)是設計和和制作音箱前必須了解的一個很重要的參數(shù)?！ ∷ぷ魇褂靡晃⑿妥儔浩鹘祲海跫壿斎腚娫礊锳C交流220Ⅴ，次級有二組電源AC18ⅤAC12Ⅴ，AC18V經(jīng)橋式整流二極管（1N4001×4），C1（30uf/32V）濾波后，為kA微型繼電器、復合三極管ⅤT1ⅤT2（9012）提供直流DC工作電源。
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
對洞口采用減光方案，可以有效降低照明能耗，新舊標準對此都進行了規(guī)定。同時，新標準還對照明白晝和夜間照明的調光方案進行了規(guī)定。照明控制設計原則主要規(guī)定了照明控制方式應以智能控制或自動控制為主，并針對突發(fā)狀況和異常工況，規(guī)定內進行養(yǎng)護維修作業(yè)時、發(fā)生交通事故、火災或進行交通管制時，內所有照明燈具宜開啟到狀態(tài)?！ ∷俣壤^電器是當轉速達到規(guī)定值時觸頭動作的繼電器。主要用于電動機反接制動控制電路中，當反接制動的轉速下降到接近零時能自動地及時切斷電源。速度繼電器的結構和工作原理如下所示轉子是一塊固定在軸上的永久磁鐵。浮動的定子與轉子同心，而且能獨自偏擺，定子由硅鋼片疊成，并裝有籠型繞組。
