P0903ZE

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描述

P0903ZE

?熔斷器的結(jié)構(gòu)一般分成熔體座和熔體等部分。熔斷器是串聯(lián)連接在被保護(hù)電路中的，當(dāng)電路電流超過一定值時(shí)，熔體因發(fā)熱而熔斷，使電路被切斷，從而起到保護(hù)作用。熔體的熱量與通過熔體電流的平方及持續(xù)通電時(shí)間成正比，當(dāng)電路短路時(shí)，電流很大，熔體急劇升溫，立即熔斷，當(dāng)電路中電流值等于熔體額定電流時(shí)，熔體不會熔斷。所以熔斷器可用于短路保護(hù)。由于熔體在用電設(shè)備過載時(shí)所通過的過載電流能積累熱量，當(dāng)用電設(shè)備連續(xù)過載一定時(shí)間后熔體積累的熱量也能使其熔斷，所以熔斷器也可作過載保護(hù)。

?RC1A系列熔斷器如圖（a），它結(jié)構(gòu)簡單，由熔斷器瓷底座和瓷蓋兩部分組成。熔絲用螺釘固定在瓷蓋內(nèi)的銅閘片上，使用時(shí)將瓷蓋插入底座，拔下瓷蓋便可更換熔絲。由于該熔斷器使用方便、價(jià)格低廉而應(yīng)用廣泛。RC1A系列熔斷器主要用于交流380V及以下的電路末端作線路和用電設(shè)備的短路保護(hù)，在照明線路中還可起過載保護(hù)作用。RC1A系列熔斷器額定電流為5~200A，但極限分?jǐn)嗄芰^差，由于該熔斷器為半封閉結(jié)構(gòu)，熔絲熔斷時(shí)有聲光現(xiàn)象，對易燃易爆的工作場合應(yīng)禁止使用。
? ? 螺旋式RL1如圖(b)，RL1系列螺旋式熔斷器由瓷帽、瓷套、熔管和底座等組成。熔管內(nèi)裝有石英沙、熔絲和帶小紅點(diǎn)的熔斷指示器。當(dāng)從瓷帽玻璃窗口觀測到帶小紅點(diǎn)的熔斷指示器自動(dòng)脫落時(shí)，表示熔絲熔斷了。熔管的額定電壓為交流500V，額定電流為2~200A。常用于機(jī)床控制線路（但安裝時(shí)注意上下接線端接法）。
? ? 無填料密封管式熔斷器RM10系列如圖(C)，由熔斷管、熔體及插座組成。熔斷管為鋼紙制成，兩端為黃銅制成的可拆式管帽，管內(nèi)熔體為變截面的熔片，更換熔體較方便。RM10系列的極限分?jǐn)嗄芰Ρ萊C1A熔斷器有所提高，適用于小容量配電設(shè)備。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價(jià)格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家

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專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家


選擇深圳長欣，選擇放心，售后無憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營：本特利，英維思，伍德沃德，福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊”（不管能不能看懂，先了解個(gè)大概，以便學(xué)習(xí)編程時(shí)查找）；
2、由位控邏輯入手，逐漸增加定時(shí)、計(jì)數(shù)等條件，把或、與、非關(guān)系理順；
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個(gè)物理回路驗(yàn)證，比如變頻器+電機(jī)+測速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時(shí)也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會一種至于其它的學(xué)習(xí)起來也就簡單了。

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