Qhov txawv ntawm Surge Protective Device thiab Overvoltage Protector

Cov khoom siv tiv thaiv hluav taws xob thiab cov khoom tiv thaiv overvoltage yog ob qho khoom siv tiv thaiv khoom siv hluav taws xob uas siv ntau. Lawv tuaj yeem txwv lossis tso tawm cov hluav taws xob overvoltage hauv lub zog fais fab thiab tiv thaiv cov khoom siv hluav taws xob kom tsis txhob raug puas tsuaj los ntawm xob laim lossis lwm yam. Txawm li cas los xij, lawv cov hauv paus ntsiab lus ua haujlwm, cov cim qhia kev ua tau zoo, cov xwm txheej siv thiab cov qauv hauv tebchaws yog txawv. Tsab xov xwm no yuav piv thiab tshuaj xyuas cov khoom tiv thaiv hluav taws xob thiab cov khoom tiv thaiv overvoltage los ntawm plaub yam no kom cov nyeem ntawv tuaj yeem xaiv thiab siv ob lub khoom siv tiv thaiv no kom raug.

Cov Khoom Siv Tiv Thaiv Surge (SPD) yog ib lub khoom siv hluav taws xob qis uas siv rau hauv cov kab ke faib hluav taws xob qis los txwv tsis pub muaj hluav taws xob ntau dhau thiab tso tawm tam sim ntawd. Nws cov khoom tseem ceeb yog zinc oxide varistor (Metal Oxide Varistor, MOV), uas muaj cov yam ntxwv voltage-current nonlinear, uas yog, thaum lub zog hluav taws xob siv qis dua nws qhov txwv, nws qhov kev tiv thaiv siab heev thiab yuav luag tsis muaj tam sim no hla dhau; Thaum lub zog hluav taws xob siv siab dua nws qhov txwv, nws qhov kev tiv thaiv txo qis sai sai, hla dhau ntau tam sim no. Ua li no, thaum muaj hluav taws xob ntau dhau tam sim ntawd hauv lub zog hluav taws xob, lub cuab yeej tiv thaiv hluav taws xob yuav tig sai sai thiab tso tawm lub zog ntau dhau mus rau hauv av, yog li tiv thaiv cov khoom siv hluav taws xob tom ntej.

Tus Tiv Thaiv Hluav Taws Xob Ntau Dhau (OVP) yog ib lub cuab yeej uas tuaj yeem txiav hluav taws xob sai thiab tsis siv neeg. Nws lub hauv paus tseem ceeb yog lub ntsuas hluav taws xob (Voltage Sensor), uas tuaj yeem ntes tau qhov hloov pauv hluav taws xob hauv lub zog hluav taws xob thiab txuas nrog lub voj voog tswj. Thaum lub zog hluav taws xob hauv lub zog hluav taws xob tshaj qhov ntau uas tau teeb tsa, lub voj voog tswj yuav ua rau lub pob hloov mus txiav lub zog, yog li tiv thaiv cov khoom siv hluav taws xob tom ntej.