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幹貨:陶瓷氣體放電管詳解,看完就明白了

更新時(shi)間:2019-05-04

陶瓷氣(qi)體放(fang)電(dian)(dian)(dian)管,簡稱GDT,是(shi)(shi)(shi)壹種開關型過壓防(fang)(fang)雷(lei)(lei)保護元器件(jian)(jian)。眾所周(zhou)知,陶瓷氣(qi)體放(fang)電(dian)(dian)(dian)管GDT廣泛應用(yong)於防(fang)(fang)雷(lei)(lei)工(gong)程的(de)(de)(de)(de)第(di)壹級(ji)或第(di)二(er)級(ji)保護上,常與(yu)限壓型防(fang)(fang)雷(lei)(lei)保護器件(jian)(jian)綜合應用(yong)。不(bu)論是(shi)(shi)(shi)各種信號(hao)電(dian)(dian)(dian)路的(de)(de)(de)(de)防(fang)(fang)雷(lei)(lei)還是(shi)(shi)(shi)交直流(liu)(liu)電(dian)(dian)(dian)源的(de)(de)(de)(de)防(fang)(fang)雷(lei)(lei),都可(ke)以(yi)借助陶瓷氣(qi)體放(fang)電(dian)(dian)(dian)管將(jiang)強大的(de)(de)(de)(de)雷(lei)(lei)電(dian)(dian)(dian)流(liu)(liu)泄放(fang)入大地,對高(gao)頻電(dian)(dian)(dian)子線路的(de)(de)(de)(de)保護有著明顯(xian)的(de)(de)(de)(de)優越性(xing)。接下來,跟著專(zhuan)業的(de)(de)(de)(de)電(dian)(dian)(dian)路保護專(zhuan)家東沃電(dian)(dian)(dian)子,壹起(qi)來揭開陶瓷氣(qi)體放(fang)電(dian)(dian)(dian)管那層神秘的(de)(de)(de)(de)面紗,再也(ye)不(bu)怕被忽悠了!

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陶(tao)瓷氣(qi)體(ti)放電(dian)管工(gong)作原理

陶瓷氣體放(fang)(fang)電(dian)(dian)(dian)(dian)管,其(qi)內(nei)(nei)部是(shi)由壹個或多個放(fang)(fang)電(dian)(dian)(dian)(dian)間隙內(nei)(nei)充有(you)(you)惰性氣體組成的(de)密閉器(qi)件,其(qi)電(dian)(dian)(dian)(dian)氣性能(neng)跟(gen)氣體種類、氣體壓(ya)力和電(dian)(dian)(dian)(dian)極距離三者相(xiang)關,主要(yao)應(ying)用於瞬(shun)時(shi)大(da)電(dian)(dian)(dian)(dian)壓(ya)的(de)過電(dian)(dian)(dian)(dian)壓(ya)保(bao)護。其(qi)惰性氣體主要(yao)是(shi)氖或氬,並保(bao)持壹定的(de)壓(ya)力,同時(shi)電(dian)(dian)(dian)(dian)極表面塗以(yi)發(fa)射劑減少電(dian)(dian)(dian)(dian)子發(fa)射能(neng)。陶瓷氣體放(fang)(fang)電(dian)(dian)(dian)(dian)管工作(zuo)原理(li)是(shi)並聯在電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中,在正(zheng)(zheng)常(chang)(chang)情況,由其(qi)獨有(you)(you)的(de)高阻(zu)抗和低電(dian)(dian)(dian)(dian)容特性,幾(ji)乎對電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)不(bu)產生(sheng)任(ren)何影(ying)響(xiang);但,壹旦有(you)(you)異常(chang)(chang)浪湧(yong)湧(yong)現時(shi),GDT以(yi)納秒級的(de)響(xiang)應(ying)速(su)度(du)被擊穿(chuan)放(fang)(fang)電(dian)(dian)(dian)(dian),使得(de)其(qi)阻(zu)抗下降,呈短(duan)路(lu)(lu)(lu)狀態,將浪湧(yong)電(dian)(dian)(dian)(dian)流通過地線(xian)轉(zhuan)接給(gei)大(da)地,從而達(da)到電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)防護作(zuo)用;當(dang)異常(chang)(chang)浪湧(yong)消失,GDT迅速(su)回到了高阻(zu)狀態,電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)正(zheng)(zheng)常(chang)(chang)運行。

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陶瓷氣(qi)體放電管特性揭秘

東沃電(dian)子(zi),在研(yan)發、生產電(dian)路(lu)保護器(qi)件方(fang)面擁有精(jing)湛的(de)技術(shu)水平(ping)和豐富的(de)研(yan)發經驗,為廣大(da)(da)客戶提供(gong)高品質的(de)保護器(qi)件產品,只為電(dian)路(lu)更安全。東沃電(dian)子(zi)結合陶瓷氣體(ti)放電(dian)管(guan)(guan)的(de)實際(ji)應用,總結出(chu)幾(ji)點特點,助力(li)大(da)(da)家更好地了解陶瓷氣體(ti)放電(dian)管(guan)(guan)。

√ 納秒級響(xiang)應速(su)度

√ 穩定的擊穿電壓

√ 低電容特(te)性

√ 高絕(jue)緣電阻

√ 無穿越(yue)電壓(ya)

√ 對原電路無影響,電路設計簡單方便

√ 無放(fang)射性,對人體、環境和生態無影響

√ 高可靠性(xing),不易損(sun)壞,使(shi)用期(qi)限長

由(you)於陶(tao)瓷器(qi)氣體放電管獨有的特性,廣泛(fan)應(ying)用各種場合,是壹種常(chang)用、高效的防雷保護(hu)器(qi)件。

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陶瓷氣體放電管選型原則

陶瓷(ci)氣體放(fang)電(dian)(dian)管(guan),外(wai)形圓柱形,按照電(dian)(dian)極數(shu),可分為(wei)二極管(guan)放(fang)電(dian)(dian)管(guan)和三級放(fang)電(dian)(dian)管(guan)兩種,帶(dai)引(yin)線和不帶(dai)引(yin)線兩種結構形式,型(xing)號繁(fan)多(duo),如何選(xuan)擇正確型(xing)號陶瓷(ci)氣體放(fang)電(dian)(dian)管(guan)是采購商(shang)最頭痛的難題(ti)?東沃電(dian)(dian)子,壹家專業(ye)的陶瓷(ci)氣體放(fang)電(dian)(dian)管(guan)生產廠家,為(wei)您(nin)帶(dai)來滿滿的陶瓷(ci)氣體放(fang)電(dian)(dian)管(guan)選(xuan)型(xing)幹貨:

1、陶瓷(ci)氣體放電(dian)(dian)管(guan)的加入(ru)前(qian)提條件是陶瓷(ci)氣體放電(dian)(dian)管(guan)的直流擊穿(chuan)電(dian)(dian)壓的下(xia)限值必須高於電(dian)(dian)路(lu)(lu)中的最大正常工作(zuo)電(dian)(dian)壓,才能不(bu)能影響電(dian)(dian)路(lu)(lu)正常工作(zuo)。

2、陶瓷(ci)氣體(ti)放(fang)電(dian)(dian)管(guan)的(de)(de)過保(bao)持電(dian)(dian)壓(ya)盡可能高,保(bao)證電(dian)(dian)路(lu)中工作電(dian)(dian)壓(ya)不會引起持續(xu)導通現象。當電(dian)(dian)路(lu)中的(de)(de)過電(dian)(dian)壓(ya)消(xiao)失後,要(yao)確保(bao)陶瓷(ci)氣體(ti)放(fang)電(dian)(dian)管(guan)及時熄滅,否則會影響電(dian)(dian)路(lu)的(de)(de)正常運行。

3、確保陶瓷氣體(ti)放電(dian)管的沖擊(ji)擊(ji)穿電(dian)壓值(zhi)必須(xu)低(di)於電(dian)路中所(suo)能承(cheng)受(shou)的最(zui)高瞬時電(dian)壓值(zhi)。

4、根據線路中可(ke)能(neng)竄(cuan)入的(de)沖(chong)擊電流強度,確定所選用放電管必(bi)須達到的(de)耐沖(chong)擊電流能(neng)力。

5、必(bi)要時(shi),陶瓷氣體放電管配(pei)上適當的(de)短路裝(zhuang)置(zhi),FS裝(zhuang)置(zhi),也叫失(shi)效保(bao)護(hu)裝(zhuang)置(zhi)。

欲想了解更多(duo)有關陶瓷(ci)氣(qi)體放電管知識和電路防(fang)護方案,防(fang)雷、防(fang)浪湧(yong)、防(fang)靜電專家東沃電子隨時(shi)您來撩!!!

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