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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
      众赢彩票
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