Earth Resistance Test

Izwi rokuti "ground resistance" ishoko risina kunyatsotsanangurwa.Mune zvimwe zviyero (zvakadai seyekuchengetedza zviyero zvemidziyo yemumba), zvinoreva kupikisa kwepasi mukati memidziyo, nepo mune mamwe mayero (senge mukodhi yekugadzira pasi), zvinoreva kushorwa kwechinhu chose chekugadzika.Zvatiri kutaura nezvazvo zvinoreva kupikisa kwepasi mukati memidziyo, ndiko kuti, kupikisa kwepasi (kunonziwo kupikisa kwepasi) mune zvakajairwa zvigadzirwa zvekuchengetedza zviyero, izvo zvinoratidzira zvakafumurwa zvikamu zvinobatika zvemidziyo uye kugadzika kwese kwemidziyo.kushorwa pakati pematerminals.Chiyero chakajairwa chinotara kuti kuramba uku hakufanirwe kuve kwakakura kupfuura 0.1.

Kudzivirirwa kwepasi kunoreva kuti kana kuvharirwa kwechigadzirwa chemagetsi kuchikundikana, zvikamu zvesimbi zvinosvikika zviri nyore zvakadai sevhavha yemagetsi zvinogona kubhadharwa, uye kuchengetedzwa kwepasi kwakavimbika kunodiwa kuitira kuchengetedzwa kwemushandisi wemagetsi.Kurwisana kwepasi chiratidzo chakakosha chekuyera kuvimbika kwekuchengetedzwa kwemagetsi.

Kuramba kwepasi kunogona kuyerwa neiyo grounding resistance tester.Sezvo kupikisa kwepasi kuri kudiki kwazvo, kazhinji mumakumi emamiliohms, zvinodikanwa kushandisa mana-terminal kuyerwa kuti ubvise kupikisa kwekusangana uye kuwana mibairo yekuyera kwayo.Ivhu rekudzivirira tester rinoumbwa nemagetsi ekuyedza, dunhu rekuyedza, chiratidzo uye alarm yedunhu.Iyo yekuyedza magetsi magetsi inoburitsa AC bvunzo ikozvino ye25A (kana 10A), uye dunhu rekuyedza rinokudza uye rinoshandura chiratidzo chevoltage chakawanikwa nemudziyo mukuyedzwa, iyo inoratidzwa nechiratidzo.Kana iyo yakayerwa yepasi kuramba yakakura kupfuura kukosha kwearamu (0.1 kana 0.2), chiridzwa chinozorira Chiedza alarm.

Chirongwa-chinodzorwa grounding resistance tester precautions

Kana iyo program-inodzorwa grounding resistance tester ikayera kuramba kwepasi, bvunzo clip inofanirwa kusungirirwa kunzvimbo yekubatanidza pamusoro peiyo inosvikika conductive chikamu.Nguva yekuedza haisi nyore kuve yakarebesa, kuitira kuti usapisa kunze kwekuyedza simba rekupa.

Kuti unyatso kuyera kumira kwepasi, waya mbiri dzakatetepa (voltage sampling waya) pa clip yekuyedza dzinofanirwa kubviswa kubva kumagetsi emagetsi echiridzwa, otsiviwa nedzimwe waya mbiri, uye akabatana nenzvimbo yekubatanidza pakati pechinhu chakayerwa nechazvino. test clip yekubvisa zvachose pesvedzero yekubata kuramba pabvunzo.

Uye zvakare, iyo grounding resistance tester inogonawo kuyera kushomeka kwekusangana kweakasiyana magetsi ekubata (contacts) mukuwedzera kuyera ivhu kuramba.

Merrick Instruments 'Programmable Earth Resistance Tester RK9930Iyo yakanyanya bvunzo ikozvino ndeye 30A;RK9930AIyo yakanyanya bvunzo ikozvino ndeye 40A;RK9930BIyo yakanyanya kubuda ikozvino ndeye 60A; Kune yekudzika bvunzo yekudzivirira, pasi pemafungu akasiyana, muganho wepamusoro wekupikiswa kwebvunzo unoverengerwa sezvinotevera:

Kana iyo yakaverengerwa kushorwa R yakakura kupfuura yakanyanya kupikisa kukosha kwemuyedzo, tora iyo yakanyanya kupikisa kukosha.

Ndezvipi zvakanakira chirongwa-inodzorwa pasi resistance tester?

Programmable Earth Resistance Tester Iyo sine wave jenareta inonyanya kudzorwa neCPU kugadzira yakajairwa sine wave, uye iyo waveform kukanganisa isingasviki 0.5%.Iyo yakajairwa sine wave inotumirwa kune simba amplifier wedunhu rekusimudzira simba, uyezve yazvino inobuda neiyo yazvino inobuda transformer.Ikozvino inobuda inopfuura kuburikidza nezvino transformer.Sampling, kugadzirisa, kusefa, uye A / D shanduko inotumirwa kuCPU kuratidzwa.Voltage sampling, kugadzirisa, kusefa, uye A / D shanduko inotumirwa kuCPU, uye iyo yakayerwa kuramba kukosha inoverengerwa neCPU.

Programmable Earth Resistance TesterKuenzaniswa neyechinyakare voltage regulator mhando yekumisa kuramba tester, ine zvinotevera zvakanakira:

1. Constant current source output;isa ikozvino kune 25A, mukati meyedzo yemhando yeiyi nhevedzano yevayedzi, panguva yekuyedzwa, iyo inobuda ikozvino ye tester ndeye 25A;iyo inobuda ikozvino haichinji nemutoro.

2. Ikozvino yakabuda yepurogiramu-inodzorwa grounding resistance tester haina kukanganiswa nemagetsi emagetsi.Mune yechinyakare voltage regulator mhando grounding resistance tester, kana simba remagetsi richichinja, kubuda kwaro ikozvino kunochinja naro;basa iri repurogiramu-inodzorwa grounding resistance tester haigone kuwanikwa nevoltage regulator type grounding resistance tester.

3.Iyo RK7305 yekumisa kuramba testerine software calibration basa;kana iyo yakabuda ikozvino, ichiratidza ikozvino uye kuyedza kuramba kwemuyedzo ichipfuura huwandu hwakapihwa mugwaro, ipapo mushandisi anogona kuenzanisa muyedzi zvichienderana nematanho ekushanda ebhuku remushandisi.RK9930 seriesInogona kugadziridzwa otomatiki uye isingakanganiswe nenharaunda

4.Kubuda kwazvino frequency kunosiyana;RK9930,RK9930A,RK9930BIkozvino kubuda kweiyo grounding resistance tester ine mafrequency maviri ekusarudza kubva: 50Hz/60Hz, inogona kusangana nezvinodiwa zvezvimedu zvebvunzo zvakasiyana.

Kuedzwa kwekuchengetedza kushanda kwemidziyo yemumba

1. Insulation resistance test

Kupokana kwekudzivirira kwemidziyo yemagetsi yemumba ndechimwe chezviratidzo zvakakosha kuti uongorore kunaka kwekudzivirira kwavo.Insulation resistance (Insulation resistance) inoreva kuramba kuri pakati pechinhu chinogara chiripo chemudziyo wemba nechikamu chesimbi chisiri mhenyu.Nekukurumidza kukura kweindasitiri yemidziyo yemumba uye nekuwedzera kukuru mukuzivikanwa kwezvigadzirwa zvakadaro, kuitira kuti kuve nechokwadi chekuchengetedzwa kwevashandisi, zvinodiwa zvemhando yekudzivirira yemidziyo yemumba zviri kuramba zvichiwedzera kuomarara.

Insulation resistance yekuyera chiridzwa chekushandisa nzira

1. Bata mukati memagetsi, vhura chinja chemagetsi, mwenje wechiratidzo chemagetsi wakabatidzwa;

2. Sarudza simba rekushanda uye shandisa bhatani rinodiwa remagetsi;

3. Sarudza kukosha kwearamu;

4. Sarudza nguva yekuedza (ye digital display series, iyo pointer type haina basa iri);

5. Chikoro chisingagumi ();(RK2681 series inogona kutsigira)

6. Kuti uenzanise chikero chakazara, batanidza chidziviriro chekugadzirisa chakabatanidzwa kumagumo ekuyeresa, uye gadzirisa chikero chakazara chekugadzirisa potentiometer kuitira kuti chinongedzo chinongedze pachiyero chakazara.

7. Batanidza chinhu chakayerwa kumagumo ekuyeresa uye uverenge kudzivirira kwekudzivirira.

Insulation resistance tester yekuyedza matanho ekuzvidzivirira

1. Inofanira kunge yakanyatsopisa isati yayera kuti ibvise unyoro mumushini, kunyanya mumamiriro ekunze ane hunyoro munguva yekunaya kumaodzanyemba.

2. Pakuyera kudzivirira kwekudzivirira kwemidziyo yemagetsi iri kushanda, midziyo inofanira kutanga yatorwa kubva munzvimbo inomhanya, uye kuyerwa kunofanirwa kuitwa nekukasira iyo hotbed isati yadonha kusvika kukamuri tembiricha kudzivirira kukosha kwakayerwa kukanganiswa condensation pane insulating pamusoro.

3. Chimbo chekuyeresa chemagetsi chinofanirwa kunge chiri munzvimbo isiri kushanda, uye chinja chekushandisa chinofanirwa kunge chiri muhurumende kuti chiyere kudzivirira kwayo kwekudzivirira, uye masekete kana zvikamu zvisina hukama nechikamu chakaedzwa chinofanira kubviswa panguva yekuyera. .

4. Kuti udzivise kukosha kwekuyera kukanganiswa nekusvibiswa kwakashata kweyero yekubatanidza waya, kuvhara kwetambo ye-quasi-connecting kunofanira kuongororwa nguva dzose uye kusakanganiswa kune mumwe nemumwe.