鹽城市SANIL開關(guān)SD-30MSK-LS,SD-30MSKB-LS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
ACC-2A1-W ACC-2A1-X ACC-2A1-Y ACC-2A1-Z ACC-2A2-W ACC-2A2-X ACC-2A2-Y ACC-2A2-Z
ACC-2A3-W ACC-2A3-X ACC-2A3-Y ACC-2A3-Z ACC-2A4-W ACC-2A4-X ACC-2A4-Y ACC-2A4-Z
ACC-2A5-W ACC-2A5-X ACC-2A5-Y ACC-2A5-Z ACC-2A6-W ACC-2A6-X ACC-2A6-Y ACC-2A6-Z
ACC-2A7-W ACC-2A7-X ACC-2A7-Y ACC-2A7-Z ACC-2A8-W ACC-2A8-X ACC-2A8-Y ACC-2A8-Z
ACC-2AR-W ACC-2A8-X ACC-2AR-Y ACC-2AR-Z ACC-2AN-W ACC-2AN-X ACC-2AN-Y ACC-2AN-Z
ACC-2B1-W ACC-2B1-X ACC-2B1-Y ACC-2B1-Z ACC-2B2-W ACC-2B2-X ACC-2B2-Y ACC-2B2-Z
ACC-2B3-W ACC-2B3-X ACC-2B3-Y ACC-2B3-Z ACC-2B4-W ACC-2B4-X ACC-2B4-Y ACC-2B4-Z
ACC-2B5-W ACC-2B5-X ACC-2B5-Y ACC-2B5-Z ACC-2B6-W ACC-2B6-X ACC-2B6-Y ACC-2B6-Z
ACC-2B7-W ACC-2B7-X ACC-2B7-Y ACC-2B7-Z ACC-2B8-W ACC-2B8-X ACC-2B8-Y ACC-2B8-Z
ACC-2BR-W ACC-2B8-X ACC-2BR-Y ACC-2BR-Z ACC-2BN-W ACC-2BN-X ACC-2BN-Y ACC-2BN-Z
ACC-2R1-W ACC-2R1-X ACC-2R1-Y ACC-2R1-Z ACC-2R2-W ACC-2R2-X ACC-2R2-Y ACC-2R2-Z
ACC-2R3-W ACC-2R3-X ACC-2R3-Y ACC-2R3-Z ACC-2R4-W ACC-2R4-X ACC-2R4-Y ACC-2R4-Z
具體方法如后所述。單極性SPWM法(1)調(diào)制波和載波：曲線①是正弦調(diào)制波，其周期決定于需要的調(diào)頻比kf，振幅值決定于ku,曲線②是采用等腰三角波的載波，其周期決定于載波頻率，振幅不變，等于ku=1時正弦調(diào)制波的振幅值，每半周期內(nèi)所有三角波的極性均相同(即單極性)。調(diào)制波和載波的交點，決定了SPWM脈沖系列的寬度和脈沖音的間隔寬度，每半周期內(nèi)的脈沖系列也是單極性的。(2)單極性調(diào)制的工作特點：每半個周期內(nèi)，逆變橋同一橋臂的兩個逆變器件中，只有一個器件按脈沖系列的規(guī)律時通時通時斷地工作，另一個完全截止；而在另半個周期內(nèi)，兩個器件的工況正好相反，流經(jīng)負(fù)載ZL的便是正、負(fù)交替的交變電流。雙極性SPWM法(1)調(diào)制波和載波：調(diào)制波仍為正弦波。
鹽城市SANIL開關(guān)SD-30MSK-LS,SD-30MSKB-LS
ACC-2R5-W ACC-2R5-X ACC-2R5-Y ACC-2R5-Z ACC-2R6-W ACC-2R6-X ACC-2R6-Y ACC-2R6-Z
ACC-2R7-W ACC-2R7-X ACC-2R7-Y ACC-2R7-Z ACC-2R8-W ACC-2R8-X ACC-2R8-Y ACC-2R8-Z
ACC-2RR-W ACC-2R8-X ACC-2RR-Y ACC-2RR-Z ACC-2RN-W ACC-2RN-X ACC-2RN-Y ACC-2RN-Z
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ACC-4B1-W ACC-4B1-X ACC-4B1-Y ACC-4B1-Z ACC-4B2-W ACC-4B2-X ACC-4B2-Y ACC-4B2-Z
ACC-4B3-W ACC-4B3-X ACC-4B3-Y ACC-4B3-Z ACC-4B4-W ACC-4B4-X ACC-4B4-Y ACC-4B4-Z
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ACC-4B7-W ACC-4B7-X ACC-4B7-Y ACC-4B7-Z ACC-4B8-W ACC-4B8-X ACC-4B8-Y ACC-4B8-Z
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ACC-7A3-W ACC-7A3-X ACC-7A3-Y ACC-7A3-Z ACC-7A4-W ACC-7A4-X ACC-7A4-Y ACC-7A4-Z
ACC-7A5-W ACC-7A5-X ACC-7A5-Y ACC-7A5-Z ACC-7A6-W ACC-7A6-X ACC-7A6-Y ACC-7A6-Z
ACC-7A7-W ACC-7A7-X ACC-7A7-Y ACC-7A7-Z ACC-7A8-W ACC-7A8-X ACC-7A8-Y ACC-7A8-Z
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按照開關(guān)管的開關(guān)條件，DC/DC轉(zhuǎn)換器又可以分為硬開關(guān)（HardSwitching）開關(guān)電源開關(guān)電源和軟開關(guān)（SoftSwitching）兩種。硬開關(guān)DC/DC轉(zhuǎn)換器的開關(guān)器件是在承受電壓或流過電流的情況下，開通或關(guān)斷電路的，因此在開通或關(guān)斷過程中將會產(chǎn)生較大的交疊損耗，即所謂的開關(guān)損耗（Switchingloss）。當(dāng)轉(zhuǎn)換器的工作狀態(tài)一定時開關(guān)損耗也是一定的，而且開關(guān)頻率越高，開關(guān)損耗越大，同時在開關(guān)過程中還會激起電路分布電感和寄生電容的振蕩，帶來附加損耗，因此，硬開關(guān)DC/DC轉(zhuǎn)換器的開關(guān)頻率不能太高。軟開關(guān)DC/DC轉(zhuǎn)換器的開關(guān)管，在開通或關(guān)斷過程中，或是加于其上的電壓為零，即零電壓開關(guān)（Zero-Voltage-Switching。
鹽城市SANIL開關(guān)SD-30MSK-LS,SD-30MSKB-LS
ACC-9A7-W ACC-9A7-X ACC-9A7-Y ACC-9A7-Z ACC-9A8-W ACC-9A8-X ACC-9A8-Y ACC-9A8-Z
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ACC-9RR-W ACC-9R8-X ACC-9RR-Y ACC-9RR-Z ACC-9RN-W ACC-9RN-X ACC-9RN-Y ACC-9RN-Z
AVC-2A1-W AVC-2A1-X AVC-2A1-Y AVC-2A1-Z AVC-2A2-W AVC-2A2-X AVC-2A2-Y AVC-2A2-Z
AVC-2A3-W AVC-2A3-X AVC-2A3-Y AVC-2A3-Z AVC-2A4-W AVC-2A4-X AVC-2A4-Y AVC-2A4-Z
AVC-2A5-W AVC-2A5-X AVC-2A5-Y AVC-2A5-Z AVC-2A6-W AVC-2A6-X AVC-2A6-Y AVC-2A6-Z
AVC-2A7-W AVC-2A7-X AVC-2A7-Y AVC-2A7-Z AVC-2A8-W AVC-2A8-X AVC-2A8-Y AVC-2A8-Z
AVC-2AR-W AVC-2A8-X AVC-2AR-Y AVC-2AR-Z AVC-2AN-W AVC-2AN-X AVC-2AN-Y AVC-2AN-Z
AVC-2B1-W AVC-2B1-X AVC-2B1-Y AVC-2B1-Z AVC-2B2-W AVC-2B2-X AVC-2B2-Y AVC-2B2-Z
AVC-2B3-W AVC-2B3-X AVC-2B3-Y AVC-2B3-Z AVC-2B4-W AVC-2B4-X AVC-2B4-Y AVC-2B4-Z
AVC-2B5-W AVC-2B5-X AVC-2B5-Y AVC-2B5-Z AVC-2B6-W AVC-2B6-X AVC-2B6-Y AVC-2B6-Z
AVC-2B7-W AVC-2B7-X AVC-2B7-Y AVC-2B7-Z AVC-2B8-W AVC-2B8-X AVC-2B8-Y AVC-2B8-Z
AVC-2BR-W AVC-2B8-X AVC-2BR-Y AVC-2BR-Z AVC-2BN-W AVC-2BN-X AVC-2BN-Y AVC-2BN-Z
AVC-2R1-W AVC-2R1-X AVC-2R1-Y AVC-2R1-Z AVC-2R2-W AVC-2R2-X AVC-2R2-Y AVC-2R2-Z
AVC-2R3-W AVC-2R3-X AVC-2R3-Y AVC-2R3-Z AVC-2R4-W AVC-2R4-X AVC-2R4-Y AVC-2R4-Z
AVC-2R5-W AVC-2R5-X AVC-2R5-Y AVC-2R5-Z AVC-2R6-W AVC-2R6-X AVC-2R6-Y AVC-2R6-Z
AVC-2R7-W AVC-2R7-X AVC-2R7-Y AVC-2R7-Z AVC-2R8-W AVC-2R8-X AVC-2R8-Y AVC-2R8-Z
AVC-2RR-W AVC-2R8-X AVC-2RR-Y AVC-2RR-Z AVC-2RN-W AVC-2RN-X AVC-2RN-Y AVC-2RN-Z
AVC-4A1-W AVC-4A1-X AVC-4A1-Y AVC-4A1-Z AVC-4A2-W AVC-4A2-X AVC-4A2-Y AVC-4A2-Z
AVC-4A3-W AVC-4A3-X AVC-4A3-Y AVC-4A3-Z AVC-4A4-W AVC-4A4-X AVC-4A4-Y AVC-4A4-Z
AVC-4A5-W AVC-4A5-X AVC-4A5-Y AVC-4A5-Z AVC-4A6-W AVC-4A6-X AVC-4A6-Y AVC-4A6-Z
AVC-4A7-W AVC-4A7-X AVC-4A7-Y AVC-4A7-Z AVC-4A8-W AVC-4A8-X AVC-4A8-Y AVC-4A8-Z
AVC-4AR-W AVC-4A8-X AVC-4AR-Y AVC-4AR-Z AVC-4AN-W AVC-4AN-X AVC-4AN-Y AVC-4AN-Z
AVC-4B1-W AVC-4B1-X AVC-4B1-Y AVC-4B1-Z AVC-4B2-W AVC-4B2-X AVC-4B2-Y AVC-4B2-Z
無論在基礎(chǔ)上還是起步時間上都落后于歐美國家。但至少目前技術(shù)已經(jīng)不是與國外變頻器行業(yè)的壁壘，而穩(wěn)定性及產(chǎn)品性能才是各個廠商面臨的主要技術(shù)問題。許多國內(nèi)軟啟動企業(yè)都在變頻器研發(fā)上投入大量的人力與物力，力求在變頻器技術(shù)方面占領(lǐng)制高點。一批的變頻器企業(yè)脫穎而出，成為了國內(nèi)上市企業(yè)。盡管如此，變頻器的核心器件IGBT和芯片始終依賴進(jìn)口，成為制約變頻器國產(chǎn)的瓶頸。變頻器核心器件的研發(fā)制造是變頻器產(chǎn)業(yè)需要突破的一個重要關(guān)口，威爾凱電氣也正在這個領(lǐng)域進(jìn)行不懈地堅持和努力。我想不久的將來，的變頻技術(shù)是有可能達(dá)到甚至超越外國先進(jìn)水平，至于多久能夠?qū)崿F(xiàn)，我們一起拭目以待吧。全球性“節(jié)能減排”工業(yè)改造計劃正在大規(guī)模推行,作為大國也高度重視節(jié)能減排。
鹽城市SANIL開關(guān)SD-30MSK-LS,SD-30MSKB-LS
AVC-4B3-W AVC-4B3-X AVC-4B3-Y AVC-4B3-Z AVC-4B4-W AVC-4B4-X AVC-4B4-Y AVC-4B4-Z
AVC-4B5-W AVC-4B5-X AVC-4B5-Y AVC-4B5-Z AVC-4B6-W AVC-4B6-X AVC-4B6-Y AVC-4B6-Z
AVC-4B7-W AVC-4B7-X AVC-4B7-Y AVC-4B7-Z AVC-4B8-W AVC-4B8-X AVC-4B8-Y AVC-4B8-Z
AVC-4BR-W AVC-4B8-X AVC-4BR-Y AVC-4BR-Z AVC-4BN-W AVC-4BN-X AVC-4BN-Y AVC-4BN-Z
AVC-4R1-W AVC-4R1-X AVC-4R1-Y AVC-4R1-Z AVC-4R2-W AVC-4R2-X AVC-4R2-Y AVC-4R2-Z
AVC-4R3-W AVC-4R3-X AVC-4R3-Y AVC-4R3-Z AVC-4R4-W AVC-4R4-X AVC-4R4-Y AVC-4R4-Z
AVC-4R5-W AVC-4R5-X AVC-4R5-Y AVC-4R5-Z AVC-4R6-W AVC-4R6-X AVC-4R6-Y AVC-4R6-Z
AVC-4R7-W AVC-4R7-X AVC-4R7-Y AVC-4R7-Z AVC-4R8-W AVC-4R8-X AVC-4R8-Y AVC-4R8-Z
AVC-4RR-W AVC-4R8-X AVC-4RR-Y AVC-4RR-Z AVC-4RN-W AVC-4RN-X AVC-4RN-Y AVC-4RN-Z
AVC-7A1-W AVC-7A1-X AVC-7A1-Y AVC-7A1-Z AVC-7A2-W AVC-7A2-X AVC-7A2-Y AVC-7A2-Z
AVC-7A3-W AVC-7A3-X AVC-7A3-Y AVC-7A3-Z AVC-7A4-W AVC-7A4-X AVC-7A4-Y AVC-7A4-Z
AVC-7A5-W AVC-7A5-X AVC-7A5-Y AVC-7A5-Z AVC-7A6-W AVC-7A6-X AVC-7A6-Y AVC-7A6-Z
AVC-7A7-W AVC-7A7-X AVC-7A7-Y AVC-7A7-Z AVC-7A8-W AVC-7A8-X AVC-7A8-Y AVC-7A8-Z
AVC-7AR-W AVC-7A8-X AVC-7AR-Y AVC-7AR-Z AVC-7AN-W AVC-7AN-X AVC-7AN-Y AVC-7AN-Z
AVC-7B1-W AVC-7B1-X AVC-7B1-Y AVC-7B1-Z AVC-7B2-W AVC-7B2-X AVC-7B2-Y AVC-7B2-Z
AVC-7B3-W AVC-7B3-X AVC-7B3-Y AVC-7B3-Z AVC-7B4-W AVC-7B4-X AVC-7B4-Y AVC-7B4-Z
AVC-7B5-W AVC-7B5-X AVC-7B5-Y AVC-7B5-Z AVC-7B6-W AVC-7B6-X AVC-7B6-Y AVC-7B6-Z
AVC-7B7-W AVC-7B7-X AVC-7B7-Y AVC-7B7-Z AVC-7B8-W AVC-7B8-X AVC-7B8-Y AVC-7B8-Z
AVC-7BR-W AVC-7B8-X AVC-7BR-Y AVC-7BR-Z AVC-7BN-W AVC-7BN-X AVC-7BN-Y AVC-7BN-Z
AVC-2C1-W AVC-2C1-X AVC-2C1-Y AVC-2C1-Z AVC-2C2-W AVC-2C2-X AVC-2C2-Y AVC-2C2-Z
AVC-2C3-W AVC-2C3-X AVC-2C3-Y AVC-2C3-Z AVC-2C4-W AVC-2C4-X AVC-2C4-Y AVC-2C4-Z
AVC-2C5-W AVC-2C5-X AVC-2C5-Y AVC-2C5-Z AVC-2C6-W AVC-2C6-X AVC-2C6-Y AVC-2C6-Z
AVC-2C7-W AVC-2C7-X AVC-2C7-Y AVC-2C7-Z AVC-2C8-W AVC-2C8-X AVC-2C8-Y AVC-2C8-Z
3.主要參數(shù)⑴在截止?fàn)顟B(tài)時①擊穿電壓Uceo和Ucex：能使集電極C和發(fā)射極E之間擊穿的電壓?；鶚OB開路是用Uceo表示，B、E間接入反向偏壓時用Ucex表示。在大多數(shù)情況下，這兩個數(shù)據(jù)是相等的。②漏電流Iceo和Icex：截止?fàn)顟B(tài)下，從C極流向E極的電流。B極開路時為Iceo，B、E間反偏時為Icex。⑵在飽和狀態(tài)時①集電極電流Icm：GTR飽和導(dǎo)通是的允許電流。②飽和壓降Uces：當(dāng)GTR飽和導(dǎo)通時，C、E間的電壓降。⑶在開關(guān)過程中①開通時間Ton：從B極通入正向信號電流時起，到集電極電流上升到0.9Ics所需要的時間。②關(guān)斷時間Toff：從基極電流撤消時起，至Ic下降至0.1Ics所需的時間開通時間和關(guān)斷時間將直接影響到SPWM調(diào)制是的載波頻率。
鹽城市SANIL開關(guān)SD-30MSK-LS,SD-30MSKB-LS
AVC-2CR-W AVC-2C8-X AVC-2CR-Y AVC-2CR-Z AVC-2CN-W AVC-2CN-X AVC-2CN-Y AVC-2CN-Z
AVC-7R1-W AVC-7R1-X AVC-7R1-Y AVC-7R1-Z AVC-7R2-W AVC-7R2-X AVC-7R2-Y AVC-7R2-Z
AVC-7R3-W AVC-7R3-X AVC-7R3-Y AVC-7R3-Z AVC-7R6-W AVC-7R6-X AVC-7R6-Y AVC-7R6-Z
AVC-7R4-W AVC-7R4-X AVC-7R4-Y AVC-7R4-Z AVC-7R5-W AVC-7R5-X AVC-7R5-Y AVC-7R5-Z
AVC-7R7-W AVC-7R7-X AVC-7R7-Y AVC-7R7-Z AVC-7R8-W AVC-7R8-X AVC-7R8-Y AVC-7R8-Z
AVC-7RR-W AVC-7R8-X AVC-7RR-Y AVC-7RR-Z AVC-7RN-W AVC-7RN-X AVC-7RN-Y AVC-7RN-Z
AVC-9A1-W AVC-9A1-X AVC-9A1-Y AVC-9A1-Z AVC-9A2-W AVC-9A2-X AVC-9A2-Y AVC-9A2-Z
AVC-9A3-W AVC-9A3-X AVC-9A3-Y AVC-9A3-Z AVC-9A4-W AVC-9A4-X AVC-9A4-Y AVC-9A4-Z
AVC-9A5-W AVC-9A5-X AVC-9A5-Y AVC-9A5-Z AVC-9A6-W AVC-9A6-X AVC-9A6-Y AVC-9A6-Z
AVC-9A7-W AVC-9A7-X AVC-9A7-Y AVC-9A7-Z AVC-9A8-W AVC-9A8-X AVC-9A8-Y AVC-9A8-Z
AVC-9AR-W AVC-9A8-X AVC-9AR-Y AVC-9AR-Z AVC-9AN-W AVC-9AN-X AVC-9AN-Y AVC-9AN-Z
AVC-9B1-W AVC-9B1-X AVC-9B1-Y AVC-9B1-Z AVC-9B2-W AVC-9B2-X AVC-9B2-Y AVC-9B2-Z
AVC-9B3-W AVC-9B3-X AVC-9B3-Y AVC-9B3-Z AVC-9B4-W AVC-9B4-X AVC-9B4-Y AVC-9B4-Z
AVC-9B5-W AVC-9B5-X AVC-9B5-Y AVC-9B5-Z AVC-9B6-W AVC-9B6-X AVC-9B6-Y AVC-9B6-Z
AVC-9B7-W AVC-9B7-X AVC-9B7-Y AVC-9B7-Z AVC-9B8-W AVC-9B8-X AVC-9B8-Y AVC-9B8-Z
AVC-9BR-W AVC-9B8-X AVC-9BR-Y AVC-9BR-Z AVC-9BN-W AVC-9BN-X AVC-9BN-Y AVC-9BN-Z
AVC-9R1-W AVC-9R1-X AVC-9R1-Y AVC-9R1-Z AVC-9R2-W AVC-9R2-X AVC-9R2-Y AVC-9R2-Z
AVC-9R3-W AVC-9R3-X AVC-9R3-Y AVC-9R3-Z AVC-9R4-W AVC-9R4-X AVC-9R4-Y AVC-9R4-Z
AVC-9R5-W AVC-9R5-X AVC-9R5-Y AVC-9R5-Z AVC-9R6-W AVC-9R6-X AVC-9R6-Y AVC-9R6-Z
AVC-9R7-W AVC-9R7-X AVC-9R7-Y AVC-9R7-Z AVC-9R8-W AVC-9R8-X AVC-9R8-Y AVC-9R8-Z
AVC-9RR-W AVC-9R8-X AVC-9RR-Y AVC-9RR-Z AVC-9RN-W AVC-9RN-X AVC-9RN-Y AVC-9RN-Z
應(yīng)當(dāng)由其它觸點擔(dān)任（例如油開關(guān)的輔助觸點）。b．動斷主觸點性能直流有感（τ=5ms）回路，U≤250V，I≤0.5A，為50W；交流（cosФ=0.4）回路；U≤250V，I≤2A，為250VA。如果被控電路系由變流器供電并與繼電器主觸點并聯(lián)，且當(dāng)電流為4A時，其總阻抗不大于4Ω，則繼電器的主觸點在電流不大于50A情況下能夠?qū)⑦@個電路分流接通與分流斷開。c．過渡轉(zhuǎn)換主觸點性能繼電器的過渡轉(zhuǎn)換主觸點控制電路由變流器供電，且其阻抗值在電流為3.5A時不大于4.5Ω，當(dāng)電流增至150A時，繼電器主觸點能夠?qū)⑦@個電路分流接通與分流斷開。d．信號觸點性能繼電器的動合信號觸點，在電壓不大于250V時能接通或斷開電流不大于0.2A的直流無感電路或電流不大于0.5A交流電路。
鹽城市SANIL開關(guān)SD-30MSK-LS,SD-30MSKB-LS
DSC-L-A1X-Y DSC-L-A2X-Y DSC-L-A3X-Y DSC-L-A4X-Y
DSC-L-A5X-Y DSC-L-A6X-Y DSC-L-A7X-Y DSC-L-AAX-Y
DSC-L-ABX-Y DSC-L-ACX-Y DSC-L-ADX-Y
DSC-L-B1X-Y DSC-L-B2X-Y DSC-L-B3X-Y DSC-L-B4X-Y
DSC-L-B5X-Y DSC-L-B6X-Y DSC-L-B7X-Y DSC-L-BAX-Y
DSC-L-BBX-Y DSC-L-BCX-Y DSC-L-BDX-Y
DSC-L-C1X-Y DSC-L-C2X-Y DSC-L-C3X-Y DSC-L-C4X-Y
DSC-L-C5X-Y DSC-L-C6X-Y DSC-L-C7X-Y DSC-L-CAX-Y
DSC-L-CBX-Y DSC-L-CCX-Y DSC-L-CDX-Y
PMC-L-A1X-Y PMC-L-B1X-Y PMC-L-C1X-Y
RDT-L-A1X-Y RDT-L-A2X-Y RDT-L-A3X-Y RDT-L-A4X-Y
RDT-L-A5X-Y RDT-L-A6X-Y RDT-L-A7X-Y
RDT-L-B1X-Y RDT-L-B2X-Y RDT-L-B3X-Y RDT-L-B4X-Y
RDT-L-B5X-Y RDT-L-B6X-Y RDT-L-B7X-Y
RDT-L-C1X-Y RDT-L-C2X-Y RDT-L-C3X-Y RDT-L-C4X-Y
RDT-L-C5X-Y RDT-L-C6X-Y RDT-L-C7X-Y
TC-L-A1X-Y TC-L-A2X-Y TC-L-A3X-Y TC-L-A4X-Y TC-L-A5X-Y TC-L-A6X-Y
TC-L-B1X-Y TC-L-B2X-Y TC-L-B3X-Y TC-L-B4X-Y TC-L-B5X-Y TC-L-B6X-Y
TC-L-C1X-Y TC-L-C2X-Y TC-L-C3X-Y TC-L-C4X-Y TC-L-C5X-Y TC-L-C6X-Y
SCON-DA-03 SCON-DIO32
其動合觸點閉合，與已閉合的KM動合輔助觸點形成自鎖，電動機正常運行。當(dāng)電動機發(fā)生斷相運行時，接在斷相上的欠電流繼電器釋放，相應(yīng)繼電器的動合觸點打開，使交流接觸器線圈的自鎖電路斷開，接觸器失電釋放，電動機停止運轉(zhuǎn)。
鹽城市SANIL開關(guān)SD-30MSK-LS,SD-30MSKB-LS
