Rwb thaiv tsev Resistance Tus Saib Xyuas Kev Nyab Xeeb: Kev Tiv Thaiv Kev Ntsuas Cov Khoom Siv Hluav Taws Xob

 

Los ntawm tsab xov xwm no, koj yuav kawm:

 

1. Cov txheej txheem ntawm rwb thaiv tsev Resistance Measurement

2. Lub ntsiab lus ntawm rwb thaiv tsev Resistance Measurement

3. Yam cuam tshuam rau rwb thaiv tsev Resistance

 

 

 

Kev ntsuas hluav taws xob yuav tsum muaj kev ntsuas kev ntsuas hluav taws xob ntau ntawm cov khoom siv hluav taws xob xws li cables, motors, generators, transformers, inductors inductors, high-voltage switches, surge arresters, etc.

 

Rwb thaiv tsev tsis kam yog ib qho tseem ceeb qhia nyob rau hauv cov kev cai ntawm kev nyab xeeb kev soj ntsuam ntawm cov khoom. Nws pab txiav txim seb qhov rwb thaiv tsev puas zoo thiab yog tias qhov chaw muaj kab mob. Los ntawm kev ntsuas qhov rwb thaiv tsev ntawm cov khoom siv, qhov tsis xws luag xws li dampness, rwb thaiv tsev degradation, thiab rwb thaiv tsev puas tuaj yeem txheeb xyuas tam sim ntawd.

 

 

1.1 Insulation Resistance Tester

 

Txoj kev kuaj pom tau yooj yim tshaj plaws yog siv megohmmeter, los yog hu ua megger. Cov cuab yeej no feem ntau yog siv los xyuas cov rwb thaiv tsev ntawm cov khoom siv hluav taws xob, cov khoom siv hauv tsev, lossis cov khoom siv hluav taws xob rau hauv av thiab nruab nrab ntawm theem. Qhov no ua kom ntseeg tau tias cov khoom siv, cov khoom siv, thiab cov khoom siv hluav taws xob ua haujlwm nyob rau hauv ib txwm muaj, kom tsis txhob muaj xwm txheej xws li hluav taws xob thiab khoom puas tsuaj.

 

Los ntawm kev ntsuas qhov kev tiv thaiv kev tiv thaiv ntawm cov qauv ntsuas ntawm 1 feeb, nws tuaj yeem txheeb xyuas qhov tsis xws luag hauv nruab nrab nrog kev rwb thaiv tsev txuas ntxiv, tag nrho dampness, lossis nkag mus rau qhov ntub dej. Piv txwv li, yog hais tias lub rwb thaiv tsev ntawm lub transformer yog tag nrho cov damp, nws cov rwb thaiv tsev kuj txo qis, uas tuaj yeem kuaj pom siv megohmmeter.

Nws yuav tsum tau muab sau tseg hais tias tsuas yog thaum rwb thaiv tsev tsis xws luag nkag mus rau ntawm ob tug ncej yuav muaj ib tug tseem ceeb kev hloov nyob rau hauv kev ntsuas rwb thaiv tsev tiv thaiv, rhiab heev xyuas qhov tsis xws luag. Yog hais tias qhov tsis xws luag tsuas yog hauv zos, thiab tseem muaj ib feem zoo rwb thaiv tsev ntawm ob theem, cov rwb thaiv tsev kuj txo qis heev los yog txawm tsis hloov. Yog li ntawd, lub zos tsis xws luag yuav tsis pom.

 

1.2 Cov cuab yeej cuab tam Schematic

 

Kev ntsuas rwb thaiv tsev feem ntau yog siv ob txoj kev sib txuas. Cov cuab yeej muaj ib qho kev sojntsuam nrog L-kawg uas tso tawm qhov hluav taws xob siab, txuas nrog lub siab-voltage kawg ntawm cov qauv kuaj. E-kawg yog txuas nrog rau qhov qis-voltage kawg lossis qhov chaw (hauv av) ntawm cov qauv kuaj. Lub hwj chim tsuas yog qhib tom qab kev sib txuas ua ke. Ua raws li cov lus qhia ua haujlwm, lub pob xeem raug nias kom pib qhov kev xeem. Rau cov qauv uas muaj peev xwm loj, nws yog ib qho tsim nyog yuav tsum tau tso tawm ua ntej kev sim, thiab tom qab ua tiav qhov kev xeem, lub hwj chim yuav tsum tau muab tua, thiab ib tug yuav tsum tau tos ob peb feeb los yog ntev dua rau kev tso tawm kom tiav ua ntej txiav cov xov hlau.

 

 

 

Thaum DC voltage siv rau txhua qhov nruab nrab, qhov tam sim no uas dhau los tuaj yeem muab faib ua peb ntu.

 

2.1 Geometric Tam sim no:

• Hais txog geometric qhov ntev ntawm qhov nruab nrab.
• Ua tiav nyob rau hauv ib qho instant.

 

2.2 Kev ua haujlwm tam sim no:

• Hais txog kev huv ntawm qhov nruab nrab ntawm qhov chaw thiab seb nws puas ntub.
• Ib qho tshwm sim hloov pauv tau ua tiav tom qab hloov pauv hloov pauv.

 

2.3 Absorption tam sim no:

• Tej zaum yuav yog vim qhov qhib Circuit Court hauv electromagnetic coil lossis kev sib cuag tsis zoo ntawm lub coil fais fab mov.
• Kuj tseem muaj feem cuam tshuam nrog geometric tam sim no thiab dampness, ib qho tshwm sim ib ntus uas tam sim no nce mus rau qee tus nqi tom qab siv DC voltage thiab maj mam txo qis dua lub sijhawm, nws thiaj li nce mus txog xoom.

 

Qhov kev ntsuas hluav taws xob tiv thaiv hluav taws xob siv hluav taws xob tiv thaiv hluav taws xob los sawv cev rau cov conduction tam sim no uas tsis cuam tshuam nrog lub sijhawm. Thaum qhov nruab nrab ntub dej, qias neeg, los yog tawg, tus naj npawb ntawm ions nyob rau hauv nruab nrab nce, ua rau muaj kev nce ntxiv hauv kev coj ua tam sim no thiab txo qis hauv rwb thaiv tsev. Yog li ntawd, raws li qhov loj ntawm cov rwb thaiv tsev tsis kam, qhov rwb thaiv tsev mob tuaj yeem nkag siab ua ntej.

 

 

3.1 Qhov kub thiab txias:

• Lub rwb thaiv tsev tsis kam ntawm cov khoom siv hluav taws xob sib txawv nrog qhov kub thiab txias.
• Qhov degree ntawm kev hloov pauv yog nyob ntawm hom rwb thaiv tsev, nrog cov ntaub ntawv uas nqus dej noo feem ntau cuam tshuam.

 

3.2 Cov nyhuv ntawm Humidity:

• Raws li ib puag ncig hloov pauv, qib ntawm rwb thaiv tsev noo noo nqus hauv cov khoom siv hluav taws xob kuj hloov.
• Rwb thaiv tsev tsis kam txo nrog nce humidity.

 

3.3 Cov nyhuv ntawm qhov av av thiab dampness:

• Deg av los yog dampness ntawm qhov khoom kuaj no txo ​​qis qhov chaw tiv taus thiab ua rau muaj kev cuam tshuam tsis zoo ntawm cov rwb thaiv tsev.
• Yog li ntawd, qhov cuam tshuam ntawm qhov dej ntws yuav tsum tau muab tshem tawm kom tau txais kev ntsuas qhov tseeb.

 

3.4 Qhov cuam tshuam ntawm Residual Charge ntawm Cov Khoom Ntsuas:

• Thaum kuaj cov cuab yeej nrog cov seem seem, qhov tshwm sim tsis tseeb yuav tshwm sim: nce lossis txo.
• Thaum lub polarity ntawm cov seem seem yog tib yam li polarity ntawm megohmmeter, qhov ntsuas qhov tshwm sim yog qhov dag ntxiv. Thaum lub polarity ntawm tus nqi seem rov qab rau lub polarity ntawm megohmmeter, qhov kev ntsuas qhov tshwm sim yog qhov tsis tseeb, vim tias megohmmeter yuav tsum tso tawm cov nqi rov qab ntau dua los ua kom cov nqi seem.