Lo lus "kev tiv thaiv hauv av" yog ib lo lus tsis zoo.Hauv qee cov qauv (xws li cov qauv kev nyab xeeb rau cov khoom siv hauv tsev), nws hais txog kev tiv thaiv hauv av hauv cov khoom siv, thaum nyob rau hauv qee cov qauv (xws li hauv cov qauv hauv av), nws hais txog qhov tsis kam ntawm tag nrho cov khoom siv hauv av.Dab tsi peb tab tom tham txog yog hais txog kev tiv thaiv hauv av hauv cov khoom siv, uas yog, kev tiv thaiv hauv av (tseem hu ua grounding resistance) nyob rau hauv cov qauv kev nyab xeeb ntawm cov khoom, uas qhia txog qhov cuam tshuam ntawm cov khoom siv thiab tag nrho cov khoom siv hauv av.tsis kam ntawm terminals.Cov txheej txheem dav dav hais tias qhov kev tiv thaiv no yuav tsum tsis txhob siab dua 0.1.
Kev tiv thaiv hauv av txhais tau hais tias thaum lub rwb thaiv tsev ntawm cov khoom siv hluav taws xob tsis ua haujlwm, cov khoom siv hlau yooj yim xws li cov ntaub thaiv hluav taws xob yuav raug them, thiab kev tiv thaiv hauv av yuav tsum muaj kev ruaj ntseg ntawm cov neeg siv khoom siv hluav taws xob.Lub grounding kuj yog ib qho tseem ceeb qhia los ntsuas qhov kev cia siab ntawm cov hluav taws xob grounding tiv thaiv.
Lub grounding resistance tuaj yeem ntsuas nrog lub grounding resistance tester.Txij li thaum lub grounding kuj yog heev me me, feem ntau nyob rau hauv kaum ntawm milliohms, nws yog tsim nyog los siv plaub-terminal ntsuas los tshem tawm cov kev tiv thaiv tiv thaiv thiab tau txais kev ntsuas qhov tseeb.Cov av tiv thaiv tester yog tsim los ntawm kev ntsuas hluav taws xob, ntsuas hluav taws xob, ntsuas ntsuas thiab ntsuas hluav taws xob.Lub zog ntsuas hluav taws xob tsim hluav taws xob AC ntsuas tam sim no ntawm 25A (los yog 10A), thiab qhov ntsuas hluav taws xob ua kom nrov thiab hloov cov teeb liab hluav taws xob tau txais los ntawm lub cuab yeej hauv kev sim, uas yog qhia los ntawm qhov taw qhia.Yog tias qhov ntsuas av tiv thaiv siab tshaj qhov ntsuas tus nqi (0.1 lossis 0.2), lub ntsuas hluav taws xob yuav suab lub tswb nrov.
Program-controlled grounding resistance tester kev soj ntsuam ceev faj
Thaum lub program-tswj grounding resistance tester ntsuas qhov kev tiv thaiv hauv av, qhov kev sim clip yuav tsum tau clamped rau qhov chaw sib txuas ntawm qhov chaw ntawm cov khoom siv tau.Lub sij hawm sim tsis yooj yim kom ntev dhau, thiaj li tsis txhob hlawv tawm qhov ntsuas hluav taws xob.
Txhawm rau ntsuas qhov kev tiv thaiv hauv av kom raug, ob lub xov hlau nyias nyias (voltage sampling wires) ntawm qhov ntsuas hluav taws xob yuav tsum tau muab tshem tawm ntawm qhov ntsuas hluav taws xob ntawm lub ntsuas hluav taws xob, hloov nrog ob lwm cov xov hlau, thiab txuas mus rau qhov chaw txuas ntawm cov khoom ntsuas thiab qhov tam sim no. xeem clip kom tshem tawm tag nrho cov cuam tshuam ntawm kev tiv thaiv ntawm qhov kev xeem.
Tsis tas li ntawd, lub grounding resistance tester tseem tuaj yeem ntsuas qhov kev tiv thaiv ntawm ntau yam hluav taws xob tiv tauj (kev sib cuag) ntxiv rau kev ntsuas av tiv thaiv.
Merrick Instruments 'Programmable Earth Resistance Tester RK9930Qhov siab tshaj plaws tam sim no yog 30A;r9930a uaQhov siab tshaj plaws tam sim no yog 40A;r9930 ibQhov siab tshaj plaws tso zis tam sim no yog 60A; Rau qhov kev ntsuam xyuas hauv av, nyob rau hauv qhov sib txawv tam sim no, qhov kev txwv sab sauv ntawm qhov kev sim ntsuas yog xam raws li hauv qab no:
Thaum qhov ntsuas qhov tsis kam R siab tshaj qhov siab tshaj qhov ntsuas qhov ntsuas, coj tus nqi siab tshaj qhov tsis kam.
Dab tsi yog qhov zoo ntawm qhov program-tswj lub ntiaj teb tiv thaiv tester?
Programmable Earth Resistance Tester Lub tshuab hluav taws xob sine yoj feem ntau yog tswj hwm los ntawm CPU los tsim cov qauv sine yoj, thiab nws cov waveform distortion tsawg dua 0.5%.Tus txheej txheem sine yoj xa mus rau lub hwj chim amplifier Circuit Court rau lub zog amplification, thiab ces tam sim no yog tso tawm los ntawm tam sim no tso zis transformer.Cov zis tam sim no dhau los ntawm qhov tam sim no transformer.Sampling, rectification, filtering, thiab A/D conversion yog xa mus rau CPU rau zaub.Voltage sampling, rectification, filtering, thiab A/D hloov dua siab tshiab yog xa mus rau CPU, thiab ntsuas tus nqi kuj yog xam los ntawm CPU.
Programmable Earth Resistance TesterPiv nrog rau cov tsoos voltage regulator hom grounding resistance tester, nws muaj cov nram qab no zoo:
1. Cov zis tam sim no tsis tu ncua;teem caij tam sim no mus rau 25A, nyob rau hauv qhov kev ntsuam xyuas ntau ntawm no series ntawm testers, thaum lub sij hawm qhov kev xeem, cov zis tam sim no ntawm lub tester yog 25A;cov zis tam sim no tsis hloov nrog lub load.
2. Cov zis tam sim no ntawm qhov program-tswj grounding resistance tester tsis cuam tshuam los ntawm lub zog hluav taws xob.Nyob rau hauv cov tsoos voltage regulator hom grounding kuj tester, yog hais tias lub hwj chim mov fluctuates, nws cov zis tam sim no yuav fluctuate nrog nws;Qhov kev ua haujlwm ntawm qhov kev pab cuam tswj cov av tiv thaiv tsis tuaj yeem ua tiav los ntawm qhov ntsuas hluav taws xob voltage hom grounding resistance tester.
3.RK7305 grounding kuj testermuaj software calibration muaj nuj nqi;Yog tias qhov tso zis tam sim no, tso saib tam sim no thiab ntsuas qhov ntsuas ntawm qhov ntsuas siab tshaj qhov ntau tau muab rau hauv phau ntawv, ces tus neeg siv tuaj yeem ntsuas tus ntsuas raws li cov kauj ruam ua haujlwm ntawm tus neeg siv phau ntawv.RK9930 seriesNws tuaj yeem raug ntsuas ntsuas thiab tsis cuam tshuam los ntawm ib puag ncig
4.Qhov tso zis tam sim no zaus hloov pauv; RK9930,r9930a ua,r9930 ibCov zis tam sim no ntawm grounding resistance tester muaj ob zaus xaiv los ntawm: 50Hz / 60Hz, uas tuaj yeem ua tau raws li qhov xav tau ntawm cov khoom sib txawv.
Kev ntsuas kev nyab xeeb ntawm cov khoom siv hauv tsev
1. Rwb thaiv tsev tsis kam kuaj
Kev rwb thaiv tsev ntawm cov khoom siv hluav taws xob hauv tsev yog ib qho tseem ceeb ntawm cov cim qhia los ntsuas qhov zoo ntawm lawv cov rwb thaiv tsev.Rwb thaiv tsev tiv thaiv yog hais txog qhov kev tiv thaiv ntawm qhov nyob ntawm cov khoom siv hauv tsev thiab cov hlau tsis muaj sia nyob.Nrog rau kev loj hlob sai ntawm kev lag luam khoom siv hauv tsev thiab kev nce qib ntawm cov khoom lag luam zoo li no, txhawm rau ua kom muaj kev nyab xeeb ntawm tus kheej ntawm cov neeg siv, cov kev xav tau rau kev rwb thaiv tsev zoo ntawm cov khoom siv hauv tsev tau dhau los ua nruj dua.
Rwb thaiv tsev tiv thaiv ntsuas ntsuas kev ua haujlwm txoj kev
1. ntsaws rau hauv lub hwj chim mov, qhib lub hwj chim hloov, lub hwj chim qhia lub teeb yog nyob rau;
2. Xaiv qhov ua hauj lwm voltage thiab nias lub pob voltage yuav tsum tau;
3. Xaiv tus nqi tswb;
4. Xaiv lub sij hawm xeem (rau cov digital zaub series, hom pointer tsis muaj qhov no);
5. Tsev kawm ntawv infinity ();(RK2681 series tuaj yeem txhawb nqa)
6. Rau tag nrho cov nplai calibration, txuas lub calibration resistor txuas mus rau qhov ntsuas kawg, thiab kho qhov ntsuas tag nrho cov calibration potentiometer kom tus pointer taw tes rau tag nrho cov nplai.
7. Txuas cov khoom ntsuas mus rau qhov ntsuas qhov kawg thiab nyeem cov rwb thaiv tsev tiv thaiv.
Rwb thaiv tsev tiv thaiv tester kuaj ceev faj
1. Nws yuav tsum tau preheated tag nrho ua ntej ntsuas kom tsav tawm cov dej noo nyob rau hauv lub tshuab, tshwj xeeb tshaj yog nyob rau hauv huab cua ntub nyob rau hauv lub caij los nag nyob rau sab qab teb.
2. Thaum ntsuas qhov rwb thaiv tsev ntawm cov khoom siv hluav taws xob hauv kev ua haujlwm, cov khoom siv yuav tsum tau muab tshem tawm ntawm lub xeev khiav ua ntej, thiab kev ntsuas yuav tsum tau ua kom sai sai ua ntej cov khoom siv hotbed poob rau hauv chav tsev kub kom tsis txhob ntsuas tus nqi los ntawm kev cuam tshuam. condensation ntawm lub insulating nto.
3. Lub ntsuas hluav taws xob yuav tsum nyob rau hauv lub xeev tsis ua haujlwm, thiab lub ntsuas ntsuas yuav tsum nyob rau hauv lub xeev los ntsuas nws cov rwb thaiv tsev, thiab cov khoom siv hluav taws xob lossis cov khoom siv uas tsis muaj feem cuam tshuam rau qhov ntsuas yuav tsum raug txiav tawm thaum ntsuas. .
4. Txhawm rau kom tsis txhob ntsuas tus nqi raug cuam tshuam los ntawm qhov tsis zoo ntawm cov rwb thaiv tsev ntawm kev ntsuas kev sib txuas ntawm cov hlau, cov rwb thaiv tsev ntawm cov quasi-connecting hlau yuav tsum tau kuaj xyuas ntau zaus thiab tsis sib tw rau ib leeg.
Post lub sij hawm: Oct-19-2022
