Lub luag haujlwm tseem ceeb thiab kev xeem hom ntawm Cov Hluav Taws Xob Cov Hluav Taws Xob Tester

Lub rwb thaiv tsev yam ntxwv tester yog cov cuab yeej siv hluav taws xob siv hluav taws xob siv los ntsuas kev noj qab haus huv ntawm cov hluav taws xob rwb thaiv tsev hauv cov khoom siv hluav taws xob, cov xov hlau thiab cables, transformers, generators, motors, thiab lwm yam.
Test Principple
Lub xeev zoo tshaj plaws ntawm cov ntaub ntawv insulating yog ua kom zoo tshaj plaws hluav taws xob insulators, tsis conductive. Txawm li cas los xij, hauv kev muaj tiag, vim tias ya raws, kev sib kis, kev laus, kev kub ntxhov lossis kev puas tsuaj ntawm lub cev, kev ua haujlwm rwb thaiv tsev yuav poob qis, ua rau cov dej ntws me me. Tus tester siv ib qho kev nyab xeeb DC high voltage rau cov khoom kuaj thiab ntsuas cov dej ntws ntws los ntawm nws los xam cov rwb thaiv tsev.
Basic formula: Rwb thaiv tsev Resistance (R)=Applied Test Voltage (V) / Measured Leakage Current (I)
Cov nqi hluav taws xob tiv thaiv feem ntau yog siab heev, nrog rau Megohms (MΩ) lossis Gohms (GΩ).
Rwb thaiv tsev Resistance Tester
Main Functions thiab Test Types
Rwb thaiv tsev Resistance Test
Qhov kev sim pib. Ntsuas qhov yooj yim rwb thaiv tsev tus nqi nyob rau hauv ib tug taag test voltage. Feem ntau yog siv rau kev kuaj xyuas niaj hnub los txiav txim seb qhov rwb thaiv tsev yog "dhau" (piv txwv li, feem ntau nrog> 1 MΩ lossis cov qauv khoom raws li qhov pib).
Absorption Ratio (DAR) thiab Polarization Index (PI) Test
Siv los txiav txim siab cov ntsiab lus noo noo thiab tag nrho qhov zoo ntawm rwb thaiv tsev. Qhov no tsis yog ib qho kev tiv thaiv tus nqi, tab sis tus piv.
Absorption Ratio: Feem ntau cov nqi tiv thaiv ntawm 60 vib nas this / tsis kam tus nqi ntawm 15 vib nas this.
Polarization Index: Feem ntau cov nqi tiv thaiv ntawm 10 feeb / tus nqi tsis kam ntawm 1 feeb.
Kev txhais lus: Qhuav, zoo rwb thaiv tsev yuav muaj nws cov nqi kuj maj mam nce nrog rau cov ntaub ntawv voltage (absorption effect). Insulated uas yog damp los yog kis kab mob yuav muaj ib tug qeeb los yog yuav luag tsis hloov tus nqi kuj nce. Yog li, PI / DAR piv yog qhov loj dua (feem ntau PI> 2.0 yog qhov zoo), qhia tias muaj kev tiv thaiv zoo dua.
Kauj Ruam Voltage Test
Siv los txheeb xyuas cov teeb meem me me hauv kev rwb thaiv tsev (xws li cov kab nrib pleb, qhov khoob ntawm huab cua). Kev sim yog ua nrog maj mam nce ntau- theem voltages (piv txwv li, los ntawm 2kV txog 5kV, txhua qib 1kV).
Kev txhais lus: Cov rwb thaiv tsev zoo yuav muaj qhov ruaj khov tus nqi ntawm qhov sib txawv voltages. Yog hais tias tus nqi kuj txo qis nrog voltage nce, nws qhia tau hais tias muaj cov tsis xws luag nyob rau hauv lub rwb thaiv tsev uas deteriorate nyob rau hauv high hluav taws xob teb.
Dielectric Discharge (DD) / Recurrent Discharge Tam sim no Test (qee qhov siab- qauv kawg muaj qhov tshwj xeeb no)
Kev kuaj mob siab dua. Ntsuas qhov nqus thiab so tam sim no ntawm qhov nruab nrab insulating thaum them thiab tawm. Nws tuaj yeem siv los txheeb xyuas qhov tseeb ntawm kev laus, cov ntsiab lus noo noo thiab kev sib kis ntawm cov ntaub ntawv insulating.