上海黎雨自動化設(shè)備有限公司【13162007958同步微信QQ;3452476319】三菱 通用變頻器;FR-D740-2.2K-CHT訂 貨 號 :FR-D740-2.2K-CHT商品型號:FR-D740-2.2K-CHT
1.變頻器的調(diào)速原理
交流異步電動機的轉(zhuǎn)速計算公式為:
n=60f(1-s)/p
由公式知,改變電源的頻率時,因同步轉(zhuǎn)速n與頻率f成正比變化,故異步電動機的轉(zhuǎn)速n也隨之改變?梢娮冾l器調(diào)速是利用電動機的同步轉(zhuǎn)速隨頻率變化的特性,通過改變電動機的供電頻率進(jìn)行調(diào)速的。
2.變頻器的調(diào)速方法
變頻器是用靜止變頻裝置(晶閘管)構(gòu)成變頻電源對異步電動機進(jìn)行調(diào)速,它采用間接變換方式(交一直一交變頻)把交流電通過整流器變成直流電,再用逆變器將直流電變?yōu)轭l率可調(diào)整的交流電供給異步電動機。如下圖:
AC/f1――整流器-DC――逆變器――AC/F2
3.變頻器的優(yōu)點
3.1節(jié)約能源[舉例:在泵、鼓風(fēng)機和引風(fēng)機的使用中,由公式n=60f(1-s)/p知轉(zhuǎn)速與電源頻率成正比,即改變電源頻率就可以改變電動機的轉(zhuǎn)速。理論上,流量(風(fēng)量)與轉(zhuǎn)速的一次方成正比,水壓(或風(fēng)壓)與轉(zhuǎn)速的平方成正比,所以軸功率與轉(zhuǎn)速的三次方成正比?梢,與調(diào)節(jié)閥門相比,調(diào)節(jié)轉(zhuǎn)速具有十分明顯的節(jié)能效果。
3.2減少啟動時對電網(wǎng)的沖擊(無變頻器啟動時啟動電流是電動機額定電流的5~7倍)。
3.3減低噪聲,實現(xiàn)電動機的軟啟動和自由停車。
3.4運行方便、準(zhǔn)確,減少了員工的勞動強度。
3.6在泵的使用上消除了泵的喘振現(xiàn)象,使泵處于至佳運行工況狀態(tài)。
4.型號
FR-A720-5.5K
FR-A7AP
FR-A7NC
FR-A7NC-E KIT-C
FR-A820-00077-2-60(0.75KW)
FR-A820-00105-2-60(1.5KW)
FR-A820-00167-2-60(2.2KW)
FR-A820-00630-2-60(11KW)
FR-A820-2.2K-1
FR-A820-5.5K
FR-A840-00023-2-60(0.4KW)
FR-A840-00038-2-60(0.75KW)
FR-A840-00052-2-60(1.5KW)
FR-A840-00083-2-60(2.2KW)
FR-A840-00126-2-60(3.7KW)
FR-A840-00170-2-60(5.5KW)
FR-A840-00250-2-60(7.5KW)
FR-A840-00310-2-60(11KW)
FR-A840-00380-2-60(15KW)
FR-A840-00470-2-60(18.5KW)
FR-A840-00620-2-60(22KW)
FR-A840-00770-2-60(30KW)
FR-A840-00930-2-60(37KW)
FR-A840-01160-2-60(45KW)
FR-A840-01800-2-60(55KW)
FR-A840-02160-2-60
FR-A840-02160-2-60 75K
FR-A840-03250-2-60(160KW)
FR-A8AP
FR-A8NC
FR-A8NP
FR-ABR-3.7K
FR-ABR-H0.4K
FR-ABR-H0.75K
FR-ABR-H1.5K
FR-ABR-H2.2K
FR-ABR-H3.7K
FR-ABR-H5.5K
FR-ABR-H7.5K
FR-ADP
FR-BIF
FR-BIF-H
FR-BLF
FR-BSF01
FR-CC2-H560K-60
FR-CC2-H630K-60
FR-D720-0.1K
FR-D720-0.2K
FR-D720-0.4K
FR-D720-0.75K
FR-D720-1.5K
FR-D720-5.5K
FR-D720-7.5K
FR-D720S-0.4K-CHT
FR-D720S-0.75K-CHT
FR-D720S-1.5K-CHT
FR-D720S-2.2K-CHT
FR-D740-0.4K-CHT
FR-D740-0.75K-CHT
FR-D740-1.5K-CHT
FR-D740-2.2K-CHT
FR-D740-3.7K-CHT
FR-D740-5.5K-CHT
FR-D740-7.5K-CHT
FR-DU07
FR-E720-0.1K
FR-E720-0.2K
FR-E720-0.4K
FR-E720-0.75K
FR-E720-1.5K
FR-E720-15K-CHT
FR-E720-2.2K
FR-E720-3.7K
FR-E720-5.5K
FR-E720-5.5K
FR-E720-7.5K
FR-E720S-0.2K
FR-E720S-0.4K-CHT
FR-E720S-0.75K-CHT
FR-E720S-1.5K-CHT
FR-E720S-2.2K-CHT
FR-E740-0.4K-CHT
FR-E740-0.75K-CHT
FR-E740-1.5K-CHT
FR-E740-11K-CHT
FR-E740-15K-CHT
FR-E740-2.2K-CHT
FR-E740-3.7K-CHT
FR-E740-5.5K-CHT
FR-E740-7.5K-CHT
FR-F740-0.75K-CHT
FR-F740-1.5K-CHT1
FR-F740-11K-CHT1
FR-F740-15K-CHT1
FR-F740-18.5K-CHT1
FR-F740-2.2K-CHT1
FR-F740-22K-CHT1
FR-F740-3.7K-CHT1
FR-F740-30K-CHT1
FR-F740-37K-CHT1
FR-F740-45K-CHT
FR-F740-5.5K-CHT1
FR-F740-55K-CHT1
FR-F740-7.5K-CHT1
FR-F740-S110K-CHT
FR-F740-S132K-CHT
FR-F740-S160K-CHT
FR-F740-S185K-CHT
FR-F740-S220K-CHT
FR-F740-S250K-CHT
FR-F740-S280K-CHT
FR-F740-S315K-CHT
FR-F740-S355K-CHT
FR-F740-S400K-CHT
FR-F740-S450K-CHT
FR-F740-S500K-CHT
FR-F740-S500K-CHT
FR-F740-S560K-CHT
FR-F740-S630K-CHT
FR-F740-S630K-CHT
FR-F740-S75K-CHT
FR-F740-S90K-CHT
FR-F840-00023-2-60(0.75KW)
FR-F840-00038-2-60(1.5KW)
FR-F840-00052-2-60(2.2KW)
FR-F840-00083-2-60(3.7KW)
FR-F840-00126-2-60(5.5KW)
FR-F840-00170-2-60(7.5KW)
FR-F840-00250-2-60(11KW)
FR-F840-00310-2-60(15KW)
FR-F840-00380-2-60(18.5KW)
FR-F840-00470-2-60(22KW)
FR-F840-00620-2-60(30KW)
FR-F840-00770-2-60(37KW)
FR-F840-00930-2-60(45KW)
FR-F840-01160-2-60(55KW)
FR-F840-01800-2-60(75KW)
FR-F840-02160-2-60(90KW)
FR-F840-02600-2-60(110KW)
FR-F842-10940-2-60
FR-F842-12120-2-60
FR-FD
FR-HAL-H1.5K
FR-HAL-H30K
FR-HAL-H37K
FR-HCC2-H560K
FR-HCC2-H630K
FR-HEL-H0.4K
FR-HEL-H0.75K
FR-HEL-H1.5K
FR-HEL-H132K
FR-HEL-H2.2K
FR-HEL-H220K
FR-HEL-H3.7K
FR-HEL-H30K
FR-HEL-H37K
FR-HEL-H5.5K
FR-HEL-H7.5K
FR-HEL-H75K
FR-PA02-02
FR-PA07
FR-PU07