Megger Test Of Distribution Transformer
Fais fab transformers yog ib qho tseem ceeb ntawm txhua qhov hluav taws xob faib hluav taws xob. Lawv yog lub luag haujlwm rau kev nqis qis ntawm qhov hluav taws xob los ntawm cov kab hluav taws xob mus rau theem uas tuaj yeem siv tau zoo los ntawm cov tsev thiab cov lag luam. Cov transformers no raug rau ntau yam kev ntsuam xyuas kom ntseeg tau tias lawv muaj kev ntseeg siab thiab kev nyab xeeb, ib qho kev sim no yog Megger test.
Kev xeem Megger yog ib hom kev ntsuas rwb thaiv tsev uas txiav txim siab qhov kev tiv thaiv hluav taws xob tawg ntawm cov ntaub ntawv rwb thaiv tsev nyob rau hauv lub transformer. Qhov kev ntsuam xyuas no ntsuas cov rwb thaiv tsev tiv thaiv ntawm lub transformer windings, thiab nruab nrab ntawm windings thiab hauv av. Nws yog ua tiav nrog Megger ntsuas, uas siv lub siab voltage rau lub transformer windings thiab ntsuas qhov tshwm sim tam sim no ntws.
Ua ntej qhov kev sim ua tiav, lub tshuab hloov pauv yuav tsum tau ua kom zoo hauv av kom tsis txhob muaj kev puas tsuaj thiab xyuas kom muaj kev nyeem ntawv raug. Txhua qhov kev sib txuas yuav tsum nruj, thiab lub tshuab hloov pauv yuav tsum tsis pub muaj cov khoom siv sab nraud lossis cov khoom thauj. Lub transformer yuav tsum raug txiav tawm ntawm lub hwj chim qhov chaw ua ntej qhov kev xeem kom paub tseeb tias tus neeg teb xov tooj muaj kev ruaj ntseg.
Thaum lub sij hawm Megger xeem, ib tug high voltage ntawm feem ntau 500 los yog 1000 volts yog siv rau lub transformer windings rau ib lub sij hawm luv luv, feem ntau tsis ntau tshaj ib feeb. Megger ntsuas ntsuas qhov tshwm sim tam sim no, uas yog qhov qhia txog kev tiv thaiv kev tiv thaiv ntawm lub transformer. Qhov tsis tshua muaj tam sim no qhia tau hais tias muaj kev tiv thaiv zoo, thaum lub siab ntws tam sim no qhia tias tsis muaj rwb thaiv tsev thiab ua tau luv luv los yog ua txhaum ntawm lub transformer.
Thaum qhov kev ntsuam xyuas tiav lawm, lub transformer yuav tsum raug tso tawm kom tsis txhob muaj qhov seem seem ntawm qhov seem hauv cov windings. Qhov no yog ua los ntawm luv luv cov coj ntawm Megger ntsuas thiab tos kom qhov hluav taws xob tawm tawm tag nrho ua ntej disconnecting cov coj.
Kev xeem Megger yog ib feem tseem ceeb ntawm kev saib xyuas tsis tu ncua rau kev faib cov tshuab hloov pauv. Nws raug pom zoo tias qhov kev sim no yuav tsum tau ua tsawg kawg ib xyoos ib zaug kom ntseeg tau tias muaj kev nyab xeeb thiab kev ntseeg siab ntawm lub transformer. Lub tshuab hluav taws xob tsis zoo tuaj yeem ua rau hluav taws xob poob siab, hluav taws kub, lossis lwm yam teeb meem loj.
Hauv kev xaus, qhov kev sim Megger yog qhov tseem ceeb ntawm qhov kev zov me nyuam rau kev faib khoom hloov pauv. Nws ntsuas qhov rwb thaiv tsev tsis kam ntawm transformer, muab cov ntaub ntawv tseem ceeb txog nws txoj kev nyab xeeb thiab kev ntseeg tau. Yog tias koj muaj lub luag haujlwm rau kev saib xyuas ntawm cov khoom siv hluav taws xob, qhov kev sim Megger yuav tsum yog ib feem ntawm koj txoj haujlwm tu.
