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          MVC1200高壓變頻器是新一代的高效節能型高壓變頻器,采用直接高高變換的方式,多電平串聯倍壓的技術方案,準最優PWM控制算法,實現優質的可變頻變壓(VVVF)的正弦電壓和正弦電流的輸出。產品具有以下特點。

          V/F控制方式

          MVC1200變頻器采用V/F控制方式,輸出電壓跟頻率成正比,使電機的磁通保持一定,避免弱磁和磁飽和現象的產生,啟動時頻率逐步增加可降低啟動沖擊電流對電動機和電網的沖擊,有效減小了電機故障;


          高-高方式

          輸入采用移相變壓器,單元串聯方式直接高壓輸出;

          風冷設計

          獨特的風道設計,在室溫50℃時,設備能可靠運行。采用頂部散熱方式,維護方便。風機選用國際知名品牌產品,經久耐用;

          模塊化設計

          單元采用模塊化設計,單元可任意互換,單元拆裝方便;

          友好的人機界面

          人機接口采用觸摸屏,全中文界面,方便用戶操作;報警實時記錄,并能對報警準確定位;

          可靠的設計

          (1)單元與控制部分的通訊采用光纖

          (2)單元的熱備設計

          (3)外圍控制部件采用西門子PLC

          (4)主回路重要器件采用進口優質品牌,所有主回路器件額定運行參數 > 實際運行的2倍選購,變壓器按電機額定功率的1.25倍容量配置,配置頂部散熱風機;

          高效率、高功率因素

          整機效率≥98%,功率因素≥95%;

          低諧波

          10KV變頻器輸出每相8單元串聯,采用每相48脈沖整流,高頻載波比使得輸出諧波空載時<4%,負載時<2%;

          寬電壓輸入范圍

          輸入電壓在85%~115%,頻率在45Hz~55Hz波動范圍內設備均能正常工作;

          小的dv/dt

          由于采用單元串聯輸出方式,dv/dt小,延長了IGBT的壽命以及降低了對整個設備絕緣要求;

          單元旁路技術

          采用二極管+晶閘管旁路裝置,當變頻器檢測到某單元的輸出發生故障時,發出指令使相應的旁路裝置動作,同時將故障單元的輸出與電路斷開,并將與故障單元相鄰的兩個單元連接起來,確保單元故障時能夠可靠被旁路;

          線電壓的自動均衡技術

          當某相的某個或幾個單元故障被旁路時,為保證整個變頻器輸出線電壓平衡,MVC1200系列高壓變頻器將切除其他兩相相應的單元;

          特有的過電壓保護技術

          設計中充分考慮操作過電壓和雷電過電壓對設備的影響,在主回路和控制回路針對不同的過電壓采用不同的處理措施,提高設備的可靠性;

          旁路柜可選

          可根據用戶不同的要求配置旁路柜;

          結構簡介

          MVC1200系列高壓變頻器柜由旁路柜、開關柜、變壓器柜、功率柜(含控制柜)四部分組成。 MVC1200系列變頻器的柜體排列圖。

          MVC1200變頻器柜體排列圖

           

           

          序號

          項目

          參數

          備注

          1

          使用標準

          《風機水泵用高壓變頻器》

           

          2

          型式及型號

          MVC1200-06k/×××

          MVC1200-10k/×××

          具體用戶需要而定

          3

          安裝地點

          室內

           

          4

          技術方案

          直接高-高方式

           

          5

          對電動機要求

          普通三相異步電動機

           

          6

          變頻器單元輸入側有無熔斷器

           

          7

          額定輸入電壓/允許變化范圍

          ±5%

           

          8

          系統輸入電壓

          6KV,10KV

           

          9

          系統輸出電壓

          0~6KV,0~10KV

           

          10

          系統輸出電流

           

           

          11

          逆變側最高輸出電壓

          6KV,10KV

           

          12

          額定容量

           

           

          13

          額定輸入頻率/允許變化范圍

          50Hz/±10%

           

          14

          對電網電壓波動的敏感性

          不敏感

           

          15

          變頻器效率

          ≥98%

           

          16

          諧波

          <4%

          17

          輸入側功率因數

          ≥95%

           

          18

          控制方式

          V/F控制

           

          19

          控制電源

          220VAC

           

          20

          整流形式

          3相不可控整流

           

          21

          逆變單元形式

          H橋逆變

           

          22

          傳動象限

          二象限

           

          23

          電隔離部分是否采用光纖電纜

          采用光纖通信

           

          24

          噪聲等級

          ≤75dB

           

          25

          冷卻方式

          強制風冷

           

          26

          冷卻系統故障對變頻器的影響

          在允許范圍內,報警不跳機

           

          27

          過載能力

          120%時60s,150%時5s,200%時立即保護

           

          28

          變壓器損耗

          ≤1.8%

           

          29

          系統總損耗

          ≤2.5%

          30

          標準控制連接

          硬接線

           

          31

          模擬量信號(輸入)規格及數量

          4-20mA,4路

          根據用戶需要擴展

          32

          模擬量信號(輸出)規格及數量

          4-20mA,4 路

           

           

          33

          開關量信號(輸入)規格及數量

          6(繼電器干式節點)

          34

          開關量信號(輸出)規格及數量

          4(繼電器干式節點)

          35

          操作鍵盤

          觸摸屏

          36

          界面語言

          中文/英文

          根據用戶要求而定

          37

          盤前維護或盤后維護

          前后均可維護

           

           

          京ICP備05077126號  京公網安備110108004354號
          幸运pk10
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