51403988-150
51403988-150
51403988-150變轉(zhuǎn)差率調(diào)速
改變轉(zhuǎn)差率調(diào)速的方法很多,常用的方案有:異步電動機(jī)定子調(diào)壓調(diào)速,電磁轉(zhuǎn)差離合器調(diào)速和繞線式異步電動機(jī)轉(zhuǎn)子回路串電阻調(diào)速,串級調(diào)速等。
定子調(diào)壓調(diào)速系統(tǒng)就是在恒定交流電源與交流電動機(jī)之間接入晶閘管作為交流電壓控制器,這種調(diào)壓調(diào)速系統(tǒng)僅適用于些屬短時與重復(fù)短時作深調(diào)速運(yùn)行的負(fù)載。為了能得到好的調(diào)速度與能穩(wěn)定運(yùn)行,般采用帶轉(zhuǎn)速負(fù)反饋的控制方式。所使用的電動機(jī)可以是繞線式異電動機(jī)或是有高轉(zhuǎn)差率的鼠籠式異步電動機(jī)。
電磁轉(zhuǎn)差離臺器調(diào)速系統(tǒng),是由鼠籠式異步電動機(jī)、電磁轉(zhuǎn)差離合器以及控制裝置組合而成。鼠籠式電動機(jī)作為原動機(jī)以恒速帶動電磁離合器的電樞轉(zhuǎn)動,通過對電磁離合器勵磁電流的控制實現(xiàn)對其磁的速度調(diào)節(jié)。這種系統(tǒng)般也采用轉(zhuǎn)速閉環(huán)控制。
現(xiàn)成的傳輸技術(shù)其實也有相關(guān)的實現(xiàn)方法:傳統(tǒng)的數(shù)據(jù)網(wǎng)通過協(xié)議轉(zhuǎn)換器(E1到V35)和路由器到E1接口來間接實現(xiàn)用E1來傳輸IP(如圖1),這樣增加了網(wǎng)絡(luò)路由的跳數(shù)(HOP),每臺路由器還需個合法的IP地址,讓網(wǎng)絡(luò)變得非常復(fù)雜,大大增加運(yùn)營商,降低了網(wǎng)絡(luò)建設(shè)進(jìn)度因此有必要在數(shù)據(jù)鏈路層直接完成以太網(wǎng)到E1的轉(zhuǎn)換,以此來充分利用現(xiàn)有的E1資源、實現(xiàn)組網(wǎng)簡單、網(wǎng)絡(luò)建設(shè)維護(hù)方便及建設(shè)費(fèi)用低等優(yōu)點(diǎn)因此我們所需的只是個以太網(wǎng)到E1的 接口轉(zhuǎn)換器,E1通過PDH或SDH傳輸平臺可以很容易地跨越地區(qū),兼容不同技術(shù)和標(biāo)準(zhǔn),實現(xiàn)LAN和WAN之間的互聯(lián)或幾個LAN之間的遠(yuǎn)距離互聯(lián),如此就可取代部分VPN路由器和邊緣路由器,減少網(wǎng)絡(luò)的路由跳數(shù)(HOP),大減少網(wǎng)絡(luò)時延,讓相距很遠(yuǎn)的幾個LAN連成同個LAN,用戶可通過網(wǎng)上鄰居來訪問遠(yuǎn)端用戶,相當(dāng)簡單方便(如圖2)
CHEMRAZ A5-568A-222-CPD-570 9222-SD570 O-RING; CHEMRAZ FILTER, 1.484 ID X0.139
Number Eleven Technologies A65202-01 Cable, Water In Opened Device efector D'45
BEARING LIMITED A-7Y-5MF1004 Bearing, 10mm ODx4 IDx3W FLGD PKG 10
Panduit ABM2S-A-D Cable Mount, 4-Way, 1" X 1", White, Pack of 50
BLACK BOX AC056A-R2 2 Channel VGA Video Splitter
CENTRALAB ACS9-252-U POTENTIOMETER, 2" SHAFT, 2500 OHMS, TAPER C1
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Control Products, Inc. AD032-503 Switch, snap, thermostatic
Fuji Electric AG23-L Illuminated Pushbutton switch; LED lamp: contact unit
SMC AN200 SILENCER, QUICK RELEASE
RECIF INC ANF8 A9028 Driving Roller Assembly Notch Aligner MSET--not in origi
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ARK-PLAS PRODICTIONS AP01CW03753PB 3/8 OD X .030 WALL Per roll, 500ft
AP Tech Pressure Regualtor SS
AP Tech AP1006S-2PW-FV4-MV4-P Pressure Regulator,SS 3500 PSI Max Inlet, 60 PSI M
AP Tech Pressure Regualtor,SS Max Inlet: 3500 PSI, Max Outlet: 60 PSI
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AP Tech AP1010S 3PW FV4 FV4 1 Pressure Regualtor SS, Max Inlet: 3500 PSI, Max O
AP Tech AP1010S-4PW-FV4-FV4-0-0 Pressure Regulator, SS 3500 PSI Max Inlet, 100 P
AP Tech Pressure Regulator SS, Max Outlet: 100 PSI, Max Inlet: 3500 PSI
AP Tech Regulator SS Maximum Inlet: 3500 PSI, Maximum Outlet: 100 PSI
AP Tech Pressure Regulator SS, 300 PSI Max Inlet, 100 PSI Max Outlet
AP Tech Diaphragm Regulator SS, 1700 PSI Max Inlet, 100 PSI Max Outlet