大慶市BUMHAN電抗器BHTB-SD300,BHTB-SD500,BHTB-SD1K韓國Sinwoo S-CON變送器。中山立訊電氣有限公司,中山朗立電氣有限公司
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稱為反時限特性(他定時限特性)。電磁機構(gòu)與電磁型繼電器類似。在輸入電流達到動作電流的10倍以上時，觸點接通動作時限與特性量無關(guān)，為自定時限。電壓繼電器廣泛用于小型電動機、變壓器和配電線路的繼電保護裝置。[2]分類編輯從形態(tài)上，可分為：電磁式電壓繼電器和靜態(tài)電壓繼電器（集成電路電壓繼電器）。從結(jié)構(gòu)類型，可分為：凸出式固定結(jié)構(gòu)、凸出式插拔式結(jié)構(gòu)、嵌入式插拔結(jié)構(gòu)、導(dǎo)軌式結(jié)構(gòu)等。從電壓動作類型，可分為：過電壓繼電器和低電壓（欠壓）繼電器。從使用方式，可分為：有輔源和無輔助源電壓繼電器。[3]除此以外，常見的還有直流電壓繼電器、三相電壓繼電器、負序電壓繼電器、帶延時功能的電壓繼電器等。電磁式電壓繼電器編輯1.結(jié)構(gòu)和原理電磁式電壓繼電器分為凸出式固定結(jié)構(gòu)。
大慶市BUMHAN電抗器BHTB-SD300,BHTB-SD500,BHTB-SD1K
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處理方法起動時一升速就跳閘，這是過電流十分嚴重的現(xiàn)象，主要檢查①工作機械有沒有卡?、谪撦d側(cè)有沒有短路，用兆歐表檢查對地有沒有短路③變頻器功率模塊有沒有損壞④電動機的起動轉(zhuǎn)矩過小，拖動系統(tǒng)轉(zhuǎn)不起來起動時不馬上跳閘，而在運行過程中跳閘，主要檢查①升速時間設(shè)定太短，加長加速時間②減速時間設(shè)定太短，加長減速時間③轉(zhuǎn)矩補償(U/F比)設(shè)定太大，引起低頻時空載電流過大④電子熱繼電器整定不當(dāng)，動作電流設(shè)定得太小，引起變頻器誤動作電壓保護過電壓保護產(chǎn)生過電壓的原因及處理方法：①電源電壓太高②降速時間太短③降速過程中，再生制動的放電單元工作不理想，來不及放電，請增加外接制動電阻和制動單元④請檢查放電回路有沒有發(fā)生故障。
大慶市BUMHAN電抗器BHTB-SD300,BHTB-SD500,BHTB-SD1K
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DIV-4G4-W DIV-4G4-X DIV-4G4-Y DIV-4G4-Z2）轉(zhuǎn)矩特性、臨界轉(zhuǎn)矩、加速轉(zhuǎn)矩。在同等電機功率情況下，相對于高過載轉(zhuǎn)矩模式，變頻器規(guī)格可以降額選取。3）電磁兼容性。為減少主電源干擾，使用時可在中間電路或變頻器輸入電路中增加電抗器，或安裝前置隔離變壓器。一般當(dāng)電機與變頻器距離超過50m時，應(yīng)在它們中間串入電抗器、濾波器或采用屏蔽防護電纜。變頻器功率的選用系統(tǒng)效率等于變頻器效率與電動機效率的乘積，只有兩者都處在較高的效率下工作時，則系統(tǒng)效率才較高。從效率角度出發(fā)，在選用變頻器功率時，要注意以下幾點：1）變頻器功率值與電動機功率值相當(dāng)時合適，以利變頻器在高的效率值下運轉(zhuǎn)。2）在變頻器的功率分級與電動機功率分級不相同時，則變頻器的功率要盡可能接近電動機的功率。
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通過改變控制角α或?qū)ń铅?，改變負載上脈沖直流電壓的平均值UL，實現(xiàn)了可控整流。小功率塑封雙向可控硅通常用作聲光控?zé)艄庀到y(tǒng)。額定電流：IA小于2A。大；中功率塑封和鐵封可控硅通常用作功率型可控調(diào)壓電路。像可調(diào)壓輸出直流電源等等。大功率高頻可控硅通常用作工業(yè)中；高頻熔煉爐等。鑒別編輯可控硅從外形上分主要有螺旋式、平板式和平底式三種，螺旋式的應(yīng)用較多。可控硅有三個電極---陽極（A）陰極（C）和控制極（G）。它有管芯是P型導(dǎo)體和N型導(dǎo)體交迭組成的四層結(jié)構(gòu)，共有三個PN結(jié)?？煽毓韬椭挥幸粋€PN結(jié)的硅整流二極度管在結(jié)構(gòu)上迥然不同?？煽毓璧乃膶咏Y(jié)構(gòu)和控制極的引用，為其發(fā)揮“以小控大”的優(yōu)異控制特性奠定了基礎(chǔ)。
大慶市BUMHAN電抗器BHTB-SD300,BHTB-SD500,BHTB-SD1K
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DIV-9CR-W DIV-9CR-X DIV-9CR-Y DIV-9CR-Z
DIV-9CN-W DIV-9CN-X DIV-9CN-Y DIV-9CN-Z

顯然不可取。為此，人們往往需要配備限制電機起動電流的起動設(shè)備，過去人們多采用Y/△轉(zhuǎn)換，自藕降壓，磁控降壓等方式來實現(xiàn)。這些方法雖然可以起到一定的限流作用，但沒有從根本上解決問題。伴隨傳動控制對自動化要求的不斷提高，采用可控硅為主要器件、單片機為控制核心的智能型電動機起動設(shè)備－軟起動器，已在各行各業(yè)得到越來越多的應(yīng)用，由于軟起動器性能優(yōu)良、體積小、重量輕，并且具有智能控制及多種保護功能，而且各項起動參數(shù)可根據(jù)不同負載進行調(diào)整，其負載適應(yīng)性很強。因此電子式軟起動器將逐步取代落后的Y/Δ、自耦減壓和磁控式等傳統(tǒng)的減壓起動設(shè)備成為必然。電力電子技術(shù)的快速發(fā)展，智能型軟起動器得到廣泛應(yīng)用。智能型軟起動器是一種集軟起動、軟停車、輕載節(jié)能和多功能保護于一體的新穎電機控制裝置。
大慶市BUMHAN電抗器BHTB-SD300,BHTB-SD500,BHTB-SD1K
DIV-9D1-W DIV-9D1-X DIV-9D1-Y DIV-9D1-Z
DIV-9D2-W DIV-9D2-X DIV-9D2-Y DIV-9D2-Z
DIV-9D3-W DIV-9D3-X DIV-9D3-Y DIV-9D3-Z
DIV-9D4-W DIV-9D4-X DIV-9D4-Y DIV-9D4-Z
DIV-9D5-W DIV-9D5-X DIV-9D5-Y DIV-9D5-Z
DIV-9D6-W DIV-9D6-X DIV-9D6-Y DIV-9D6-Z
DIV-9D7-W DIV-9D7-X DIV-9D7-Y DIV-9D7-Z
DIV-9D8-W DIV-9D8-X DIV-9D8-Y DIV-9D8-Z
DIV-9DR-W DIV-9DR-X DIV-9DR-Y DIV-9DR-Z
DIV-9DN-W DIV-9DN-X DIV-9DN-Y DIV-9DN-Z
DIV-9E1-W DIV-9E1-X DIV-9E1-Y DIV-9E1-Z
DIV-9E2-W DIV-9E2-X DIV-9E2-Y DIV-9E2-Z
DIV-9E3-W DIV-9E3-X DIV-9E3-Y DIV-9E3-Z
DIV-9E4-W DIV-9E4-X DIV-9E4-Y DIV-9E4-Z
DIV-9E5-W DIV-9E5-X DIV-9E5-Y DIV-9E5-Z
DIV-9E6-W DIV-9E6-X DIV-9E6-Y DIV-9E6-Z
DIV-9E7-W DIV-9E7-X DIV-9E7-Y DIV-9E7-Z
DIV-9E8-W DIV-9E8-X DIV-9E8-Y DIV-9E8-Z
DIV-9ER-W DIV-9ER-X DIV-9ER-Y DIV-9ER-Z
DIV-9EN-W DIV-9EN-X DIV-9EN-Y DIV-9EN-Z
DIV-9F1-W DIV-9F1-X DIV-9F1-Y DIV-9F1-Z
DIV-9F2-W DIV-9F2-X DIV-9F2-Y DIV-9F2-Z
DIV-9F3-W DIV-9F3-X DIV-9F3-Y DIV-9F3-Z
DIV-9F4-W DIV-9F4-X DIV-9F4-Y DIV-9F4-Z
DIV-9F5-W DIV-9F5-X DIV-9F5-Y DIV-9F5-Z

測量各點參數(shù)時可用普通手縫針焊在萬用表的表筆上，以便刺穿漆層直接測量各點，而不用大面積剝離漆層。不要帶電插拔各種控制板和插頭。在加電情況下，插拔控制板會產(chǎn)生較強的感應(yīng)電動勢，這時瞬間反擊電壓很高，很容易損壞相應(yīng)的控制板和插頭。檢修時不要盲目亂敲亂碰，以免擴大故障，越修越壞。使用邏輯筆、示波器檢測信號時，要注意不使探針同時接觸兩個測量引腳而形成短路。記錄時間的的存儲大小。必在要多注意有時會有數(shù)值的超額。U盤在插入儀表存儲數(shù)據(jù)前要進行格式化處理（按FAT32格式），U盤存儲功能需要手動存儲，可以到儀表的數(shù)據(jù)備份畫面選擇要數(shù)據(jù)備份的起始時間和接收時間后，然后選擇備份有了這些知識。
大慶市BUMHAN電抗器BHTB-SD300,BHTB-SD500,BHTB-SD1K
DIV-9F6-W DIV-9F6-X DIV-9F6-Y DIV-9F6-Z
DIV-9F7-W DIV-9F7-X DIV-9F7-Y DIV-9F7-Z
DIV-9F8-W DIV-9F8-X DIV-9F8-Y DIV-9F8-Z
DIV-9FR-W DIV-9FR-X DIV-9FR-Y DIV-9FR-Z
DIV-9FN-W DIV-9FN-X DIV-9FN-Y DIV-9FN-Z
DIV-9G1-W DIV-9G1-X DIV-9G1-Y DIV-9G1-Z
DIV-9G2-W DIV-9G2-X DIV-9G2-Y DIV-9G2-Z
DIV-9G3-W DIV-9G3-X DIV-9G3-Y DIV-9G3-Z
DIV-9G4-W DIV-9G4-X DIV-9G4-Y DIV-9G4-Z
DIV-9G5-W DIV-9G5-X DIV-9G5-Y DIV-9G5-Z
DIV-9G6-W DIV-9G6-X DIV-9G6-Y DIV-9G6-Z
DIV-9G7-W DIV-9G7-X DIV-9G7-Y DIV-9G7-Z
DIV-9G8-W DIV-9G8-X DIV-9G8-Y DIV-9G8-Z
DIV-9GR-W DIV-9GR-X DIV-9GR-Y DIV-9GR-Z
DIV-9GN-W DIV-9GN-X DIV-9GN-Y DIV-9GN-Z
DIV-9H1-W DIV-9H1-X DIV-9H1-Y DIV-9H1-Z
DIV-9H2-W DIV-9H2-X DIV-9H2-Y DIV-9H2-Z
DIV-9H3-W DIV-9H3-X DIV-9H3-Y DIV-9H3-Z
DIV-9H4-W DIV-9H4-X DIV-9H4-Y DIV-9H4-Z
DIV-9H5-W DIV-9H5-X DIV-9H5-Y DIV-9H5-Z
DIV-9H6-W DIV-9H6-X DIV-9H6-Y DIV-9H6-Z
DIV-9H7-W DIV-9H7-X DIV-9H7-Y DIV-9H7-Z
DIV-9H8-W DIV-9H8-X DIV-9H8-Y DIV-9H8-Z
DIV-9HR-W DIV-9HR-X DIV-9HR-Y DIV-9HR-Z
DIV-9HN-W DIV-9HN-X DIV-9HN-Y DIV-9HN-Z

各種信號可直接輸入，記錄儀內(nèi)部可自動識別，且可以為一次儀表提供全隔離配電，使用、維護非常方便；第三方面，精度非常高，可達到千分之一的精度；第四，高性價比。不但能顯示、記錄，而且具有調(diào)節(jié)、報警輸出功能，特別適于高度分散，既需顯示，又需控制的油田現(xiàn)場；第五，其內(nèi)部固化了常規(guī)控制算法、常用介質(zhì)溫壓補償、流量累計等功能塊；第六，它具有通訊和聯(lián)網(wǎng)功能，記錄儀上可配有兩個RS-485接口和一個RS-232接口，使用它們可方便的組成網(wǎng)絡(luò)，另外，體積小、容量大。多可達8個輸入通道，也可構(gòu)成8路PID，同時可有12個開關(guān)量輸出。在本應(yīng)用案例中，該系統(tǒng)主要用于采油站、聯(lián)合站對每口井以及各個區(qū)域采油、氣量的實時顯示、記錄。
大慶市BUMHAN電抗器BHTB-SD300,BHTB-SD500,BHTB-SD1K