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產(chǎn)品型號(hào): MYA-LA12
所屬分類(lèi):電壓繼電器/電流繼電器
產(chǎn)品時(shí)間:2024-09-29
簡(jiǎn)要描述:電流繼電器JL12本繼電器用于50HZ,電壓至380V,線圈電源至300A電路中作為起重機(jī)上交流線型電動(dòng)機(jī)的啟動(dòng)過(guò)載。過(guò)流保護(hù)之用。 2.型號(hào)參數(shù): 技術(shù)參數(shù) 型號(hào)及電流等級(jí) 線圈額定電流(A) 電壓(V) 觸頭額定發(fā)熱電流(安) 動(dòng)作電流(A) 動(dòng)作時(shí)間
概述:
本繼電器用于50HZ,電壓至380V,線圈電源至300A電路中作為起重機(jī)上交流線型電動(dòng)機(jī)的啟動(dòng)過(guò)載。過(guò)流保護(hù)之用。
2.型號(hào)參數(shù):
技
術(shù)
參
數(shù) 型號(hào)及電流等級(jí) 線圈額定電流(A) 電壓(V) 觸頭額定發(fā)熱電流(安) 動(dòng)作電流(A) 動(dòng)作時(shí)間
電流繼電器JL1261H 不動(dòng)作1<3分鐘(熱態(tài))10秒鐘±6秒鐘<1-3秒
3.安裝尺寸:
電流繼電器JL12
繼電器是一種靠電磁感應(yīng)工作的自動(dòng)化電器開(kāi)關(guān)。
繼電器的工作原理和特性
繼電器是一種電子控制泰件,它具有控制系統(tǒng)(義稱(chēng)輸入回路)和被控制系統(tǒng)(義稱(chēng)輸出口路),通常應(yīng)用于自動(dòng)控制電
路中,它實(shí)際上是用較小的電流去控制較大電流的一種“自動(dòng)開(kāi)關(guān)"。故在電路中起著自動(dòng)調(diào)節(jié)、安全保護(hù)、轉(zhuǎn)換電路
等作用。
1、電磁繼電器的工作原理和特性
電磁式繼電器一般由鐵芯、線圈,銜鐵,觸點(diǎn)等片等組成的。只要在線圈兩端加上一定的電床,線圈中就會(huì)流過(guò)一定
的電流,從而產(chǎn)生電磁效應(yīng),銜鐵就會(huì)在電磁力吸引的作用下克服返回彈策的拉力吸向鐵芯,從而帶動(dòng)銜鐵的動(dòng)觸點(diǎn)
與靜觸點(diǎn)(常開(kāi)觸點(diǎn))吸合。當(dāng)線圈斷電后,電磁的吸力也隨之消失,銜鐵就會(huì)在彈簧的反作用力返回原來(lái)的位置,使
動(dòng)觸點(diǎn)與原來(lái)的靜觸點(diǎn)(常閉觸點(diǎn))吸合。這樣吸合、釋放,從而達(dá)到了在電路中的導(dǎo)通、切斷的目的。對(duì)于繼電器的
“常開(kāi)、常閉"觸點(diǎn),可以這樣來(lái)區(qū)分:繼電器線圈未通電時(shí)處于斷開(kāi)狀態(tài)的靜觸點(diǎn),稱(chēng)為“常開(kāi)觸點(diǎn)";處于接通狀態(tài)
的靜觸點(diǎn)稱(chēng)為“常閉觸點(diǎn)"。
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