A:Uyu mubvunzo unoda kubvunza vazhinji vanogadzira zvigadzirwa, uye hongu mhinduro inonyanyozivikanwa ndeye "nekuti chiyero chekuchengetedza chinozvitaura."Kana iwe uchikwanisa kunzwisisa zvakadzama kumashure kwemitemo yekuchengetedza magetsi, iwe uchawana mutoro shure kwayo.zvine zvazvinoreva.Kunyangwe kuongororwa kwekuchengetedza kwemagetsi kunotora nguva shoma pamutsetse wekugadzira, zvinokutendera kuti udzikise njodzi yekudzokororwa kwechigadzirwa nekuda kwenjodzi dzemagetsi.Kuigadzirisa kekutanga ndiyo nzira chaiyo yekudzikisa mari uye kuchengetedza kugarisana.
A: Muedzo wekukuvadzwa kwemagetsi unonyanyo patsanurwa mumhando ina dzinotevera: Dielectric Withstand / Hipot Muedzo: Iyo yekumira voltage bvunzo inoshandisa yakakwira voltage kusimba uye pasi maseketi echigadzirwa uye inoyera kuparara kwayo.Isolation Resistance Test: Edza iyo magetsi ekudzivirira mamiriro echigadzirwa.Leakage Yazvino Muedzo: Tarisa uone kana iyo yekuvuza ikozvino yeAC / DC magetsi kune yepasi terminal inodarika mwero.Dziviriro Ground: Edza kana zvimiro zvesimbi zvinosvikika zvakadzika pasi zvakanaka.
A: Nekuchengetedza kwevanoedza muvagadziri kana bvunzo marabhoritari, yave ichiitwa muEurope kwemakore mazhinji.Vangave vagadziri uye vanoedza zvemagetsi zvigadzirwa, zvigadzirwa zvetekinoroji, midziyo yemumba, maturusi emuchina kana zvimwe midziyo, mumitemo yakasiyana-siyana yekuchengetedza Pane zvitsauko mumirairo, ingave iri UL, IEC, EN, iyo inosanganisira yekumaka nzvimbo yekuyedza (vashandi. nzvimbo, nzvimbo yezviridzwa, nzvimbo yeDUT), yekumaka yemidziyo (yakanyatso chiratidzo "njodzi" kana zvinhu zviri kuedzwa), nzvimbo yepasi yebhenji rekushandisa uye zvimwe zvivakwa zvine hukama, uye kugona kwemagetsi ekudzivirira kwega yega bvunzo (IEC 61010).
A: Kushingirira bvunzo yevoltage kana yakakwira voltage bvunzo (HIPOT bvunzo) ndeye 100% chiyero chinoshandiswa kuona mhando uye magetsi ekuchengetedza hunhu hwezvigadzirwa (sezvinodiwa neJSI, CSA, BSI, UL, IEC, TUV, nezvimwewo. masangano ekuchengetedza) Ndiyo zvakare inonyanya kuzivikanwa uye inowanzoitwa yekugadzira mitsara yekuchengetedza bvunzo.Iyo HIPOT bvunzo ndeye isingaparadze bvunzo yekuona kuti magetsi ekuisa insulating zvinhu zvinodzivirira zvakaringana kune akakwira voltages, uye ndeye yakakwira-voltage bvunzo inoshanda kune ese michina kuona kuti iyo insulating yakaringana.Zvimwe zvikonzero zvekuita HIPOT bvunzo ndezvekuti inokwanisa kuona hurema hwakaita senge kusakwana creepage kureba uye kubvumidzwa kwakakonzerwa panguva yekugadzira.
A: Kazhinji, iyo voltage waveform mune yemagetsi system ndeye sine wave.Munguva yekushanda kwesimba remagetsi, nekuda kwekurova kwemheni, kushanda, kukanganisa kana kusafananidzwa kweparameter yemidziyo yemagetsi, voltage yezvimwe zvikamu zvegadziriro inongoerekana yasimuka uye inodarika zvakanyanya voltage yayo yakayerwa, iyo yakawandisa.Overvoltage inogona kukamurwa muzvikamu zviviri zvinoenderana nezvikonzero zvayo.Imwe ndeye overvoltage inokonzerwa nekurova kwemheni yakananga kana kupinza mheni, iyo inonzi kunze overvoltage.Hukuru hwemheni inokonzeresa yazvino uye impulse voltage yakakura, uye nguva yacho ipfupi kwazvo, inoparadza zvakanyanya.Zvakadaro, nekuti mitsetse yekumusoro ye3-10kV nepasi mumataundi nemabhizimusi ezvemaindasitiri anodzivirirwa neworkshop kana zvivakwa zvirefu, mukana wekurohwa nemheni zvakananga idiki kwazvo, izvo zvakachengeteka.Uyezve, izvo zvinokurukurwa pano midziyo yemagetsi yemumba, iyo isiri mukati meiyo yataurwa pamusoro apa, uye haichazokurukurwa zvakare.Imwe mhando inokonzerwa nekushandurwa kwesimba kana shanduko yeparameter mukati memagetsi emagetsi, zvakadai sekukodzera mutsara we-no-load, kucheka pasina-load transformer, uye imwe-phase arc grounding muhurongwa, iyo inonzi internal overvoltage.Internal overvoltage ndiyo nheyo huru yekutarisa yakajairika insulation level yeakasiyana magetsi emidziyo musimba remagetsi.Kureva kuti, dhizaini yechimiro chekudzivirira chechigadzirwa hachifanirwe kufunga kwete chete yakayerwa voltage asiwo iyo yemukati overvoltage yemamiriro ekushandiswa kwechigadzirwa.Iyo standstand voltage bvunzo ndeyekuona kana iyo insulation chimiro chechigadzirwa ichigona kumira mukati meiyo overvoltage yesimba system.
A: Kazhinji iyo AC inomira voltage bvunzo inogamuchirwa kune ekuchengetedza masangano pane iyo DC inomira voltage bvunzo.Chikonzero chikuru ndechekuti zvinhu zvakawanda zviri pasi pekuyedzwa zvichashanda pasi pe AC voltage, uye iyo AC inomira voltage bvunzo inopa mukana wekuchinjisa polarities mbiri kusimbisa insulation, iri padyo nekunetsekana kuchasangana nechigadzirwa mukushandisa chaiko.Sezvo iyo AC bvunzo isingabhadharisi capacitive mutoro, kuverenga kwazvino kunoramba kwakafanana kubva pakutanga kweiyo voltage application kusvika kumagumo ebvunzo.Naizvozvo, hapana chikonzero chekukwidza voltage sezvo pasina nyaya dzekudzikamisa dzinodiwa kutarisa kuverenga kwazvino.Izvi zvinoreva kuti kunze kwekunge chigadzirwa chiri pasi pekuyedzwa chanzwa kungoerekana kwaiswa voltage, mushandisi anogona kubva angoisa yakazara voltage uye overenga yazvino pasina kumirira.Sezvo iyo AC voltage isingabhadhare mutoro, hapana chikonzero chekuburitsa mudziyo uchiyedzwa mushure mekuyedzwa.
A: Paunenge uchiyedza capacitive mitoro, iyo yakazara ikozvino ine reactive uye leakage currents.Kana huwandu hweiyo reactive ikozvino yakakura zvakanyanya kupfuura yechokwadi leakage ikozvino, zvingave zvakaoma kuona zvigadzirwa zvine yakawandisa leakage ikozvino.Paunenge uchiyedza mahombe capacitive mitoro, iyo yakazara ikozvino inodiwa yakakura kupfuura iyo yekuvuza ikozvino pachayo.Iyi inogona kunge iri njodzi huru sezvo mushandisi ari kuratidzwa kumhepo yakakwira
A: Kana chishandiso chiri pasi pekuyedzwa (DUT) chachajwa zvizere, chechokwadi chete kuvuza kwazvino kunoyerera.Izvi zvinogonesa iyo DC Hipot Tester kuratidza zvakajeka iyo yechokwadi kuvuza ikozvino kwechigadzirwa chiri mukuedzwa.Nekuda kwekuti kuchaja kwacho ndekwenguva pfupi, simba rinodiwa neDC inomira voltage tester kazhinji rinogona kunge riri shoma pane iro reAC inomira voltage tester inoshandiswa kuyedza chigadzirwa chimwe chete.
A: Sezvo iyo DC inomira voltage bvunzo ichichaja iyo DUT, kuitira kubvisa njodzi yekuvhunduka kwemagetsi kune anoshanda neDUT mushure mekumira voltage test, iyo DUT inofanirwa kuburitswa mushure mebvunzo.Iyo DC bvunzo inobhadharisa iyo capacitor.Kana iyo DUT ichinyatso shandisa AC simba, iyo DC nzira haitevedzere mamiriro chaiwo.
A: Kune marudzi maviri ekumira bvunzo bvunzo: AC inomira voltage bvunzo uye DC inomira voltage bvunzo.Nekuda kwehunhu hwezvinhu zvinodzivirira, nzira dzekuparara dze AC neDC voltages dzakasiyana.Zvizhinji zvekuisa insulating zvinhu uye masisitimu ane huwandu hweakasiyana midhiya.Kana iyo AC test voltage ikaiswa kwairi, voltage inogovaniswa zvichienderana nema paramita akadai se dielectric kugara uye hukuru hwechinhu.Ipo DC voltage inongogovera iyo voltage muyero yekupokana kwezvinhu.Uye chaizvoizvo, kuparara kwechimiro chekudzivirira chinowanzokonzerwa nekuparara kwemagetsi, kuparara kwemafuta, kubuda uye mamwe mafomu panguva imwe chete, uye zvakaoma kuzviparadzanisa zvachose.Uye AC voltage inowedzera mukana wekuparara kwemafuta pamusoro peDC voltage.Naizvozvo, isu tinotenda kuti iyo AC inomira voltage bvunzo yakanyanya kuomarara kupfuura iyo DC inomira voltage bvunzo.Mukushanda chaiko, kana uchiita bvunzo yekumira yevoltage, kana DC ichishandiswa kuyedza voltage, bvunzo yevoltage inodiwa kuti ive yakakwira kupfuura yevoltage yeiyo AC simba frequency.Iyo yekuyedza voltage yeyakajairwa DC inomira voltage bvunzo inowedzerwa neanogara K nekukosha kunoshanda kweiyo AC test voltage.Kuburikidza nemiedzo yekuenzanisa, isu tine zvinotevera zvinotevera: kune waya netambo zvigadzirwa, iyo inogara K ndeye 3;yeindasitiri yendege, iyo inogara K ndeye 1.6 kusvika 1.7;CSA inowanzo shandisa 1.414 kune zvigadzirwa zvevanhu.
A:Iye vhezheni yekuyedza inotaridza bvunzo dzekumira nevoltage zvinoenderana nemusika wauchaiswa chigadzirwa chako, uye unofanirwa kutevedzera mazinga ekuchengetedza kana mirau iyo iri chikamu chemitemo yekutonga kupinza munyika.Iyo yekuyedza voltage uye nguva yekuyedza yekumira voltage bvunzo inotsanangurwa mune yekuchengetedza mwero.Mamiriro akanaka ndeekukumbira mutengi wako kuti akupe zvinoenderana nebvunzo zvinodiwa.Iyo yekuyedza voltage yeiyo general stand voltage test ndeiyi: kana vhezheni yekushanda iri pakati pe42V ne1000V, iyo test voltage inopeta kaviri simba rekushanda pamwe ne1000V.Iyi test voltage inoshandiswa kweminiti imwe.Semuenzaniso, kune chigadzirwa chinoshanda pa 230V, test voltage ndeye 1460V.Kana iyo voltage yekushandisa nguva yakapfupikiswa, iyo test voltage inofanirwa kuwedzerwa.Semuenzaniso, iyo yekugadzira mutsara bvunzo mamiriro muUL 935:
| mamiriro | Nguva yekushandisa (masekondi) | kushandiswa kwemagetsi |
| A | 60 | 1000V + (2 x V) |
| B | 1 | 1200V + (2.4 x V) |
| V=maximum rated voltage | ||
A: Kugona kweHipot Tester kunoreva kuburitsa kwayo simba.Kugona kweiyo stand voltage tester inotarwa neiyo yakanyanya kubuda ikozvino x iyo yakanyanya kubuda voltage.Eg:5000Vx100mA=500VA
A: Iyo yakarasika capacitance yechinhu chakaedzwa ndicho chikonzero chikuru chemutsauko pakati peyakayerwa kukosha kweAC neDC inomira bvunzo dzemagetsi.Aya akarasika capacitances anogona kunge asina kubhadhariswa zvizere kana uchiyedzwa neAC, uye pachave neinoenderera ikozvino ichiyerera kuburikidza neaya akarasika capacitances.Nekuyedzwa kweDC, kana simba rakarasika paDUT rachajwa zvizere, chinosara inguva yekuvuza chaiko kweDUT.Naizvozvo, iyo yekudonha yazvino kukosha yakayerwa neAC inomira voltage bvunzo uye iyo DC inomira voltage bvunzo ichave yakasiyana.
A: Insulators haisi-conductive, asi chaizvoizvo inenge isina insulating zvinhu hazvina-conductive zvachose.Kune chero insulating material, kana voltage ikaiswa pairi, imwe yazvino inogara ichiyerera.Chinhu chinoshanda cheichi chazvino chinonzi leakage ikozvino, uye chiitiko ichi chinonziwo kuvuza kweiyo insulator.Kuyedzo yemidziyo yemagetsi, kuvuza ikozvino kunoreva iyo ikozvino inoumbwa neyakapoteredzwa yepakati kana insulating nzvimbo pakati pezvikamu zvesimbi zvine kusungirirana, kana pakati pezvikamu zvipenyu uye zvikamu zvakadzika pasi mukushaikwa kwevolti yakashandiswa.ndiyo leakage current.Zvinoenderana neUS UL standard, kuvuza ikozvino ndiyo yazvino inogona kuitiswa kubva munzvimbo dzinosvikika dzemidziyo yemumba, kusanganisira capacitively yakabatana mafungu.Iyo leakage ikozvino inosanganisira zvikamu zviviri, chimwe chikamu ndeye conduction ikozvino I1 kuburikidza nekudzivirira kwekudzivirira;chimwe chikamu ndechekutamisa ikozvino I2 kuburikidza neyakagoverwa capacitance, iyo yekupedzisira capacitive reactance ndeye XC = 1 / 2pfc uye inopindirana nemagetsi emagetsi frequency, uye iyo yakagoverwa capacitance ikozvino inowedzera ne frequency.kuwedzera, saka iyo yekudonha ikozvino inowedzera nehuwandu hwemagetsi ekupa.Semuenzaniso: kushandisa thyristor kune magetsi, zvikamu zvaro zve harmonic zvinowedzera kubuda kwezvino.
A: Iyo yekumira voltage bvunzo ndeyekuona iyo leakage ikozvino inoyerera kuburikidza neiyo insulation system yechinhu chiri kuedzwa, uye kushandisa voltage yakakwira kupfuura yekushanda voltage kune iyo insulation system;ukuwo simba rekubuda kwemagetsi (contact current) kuri kuona kubuda kwechinhu chirikuedzwa pasi pekushanda kwakajairika.Edza kudonha ikozvino kwechinhu chakayerwa pasi pemamiriro asina kunaka (voltage, frequency).Zvichitaurwa zviri nyore, iyo yekuvuza ikozvino yestanding voltage bvunzo ndeyekudonha kwazvino kuyerwa pasi pesimba rekushanda, uye simba rekudonha razvino (kusangana nazvino) ndiko kuvuza kwazvino kuyerwa pasi pekushanda kwakajairwa.
A: Kune zvigadzirwa zvemagetsi zvezvimiro zvakasiyana, kuyerwa kwekubata ikozvino kunewo zvakasiyana zvinodiwa, asi kazhinji, kubata ikozvino kunogona kukamurwa kuita yepasi yekubata ikozvino Ground Leakage Yazvino, pamusoro-kusvika-pasi kusangana ikozvino Surface kune Line Leakage Yazvino uye pamusoro. -ku-line Leakage Yazvino Matatu kubata ikozvino Surface kune Surface Leakage Yazvino bvunzo
A: Zvikamu zvesimbi zvinosvikika kana zvakavharirwa zvezvigadzirwa zvemagetsi zveKirasi I midziyo inofanirawo kuva nedunhu rakanaka rekugadzika sechiyero chekudzivirira pakuvhundutswa kwemagetsi kunze kwekuvharisa.Nekudaro, isu tinowanzo sangana nevamwe vashandisi vanoshandisa zvisina tsarukano midziyo yeKirasi I semidziyo yeKirasi II, kana kuburitsa zvakananga nzvimbo yepasi (GND) panoperera magetsi emidziyo yeKirasi I, saka pane njodzi dzekuchengetedza.Kunyange zvakadaro, ibasa remugadziri kudzivirira njodzi kumushandisi inokonzerwa nemamiriro ezvinhu aya.Ichi ndicho chikonzero chekubata ikozvino bvunzo inoitwa.
A: Munguva ye AC inomira voltage test, hapana chiyero nekuda kwemhando dzakasiyana dzezvinhu zvakaedzwa, kuvepo kweakarasika capacitances muzvinhu zvakaedzwa, uye akasiyana bvunzo voltages, saka hapana mwero.
A: Nzira yakanakisa yekuona iyo test voltage ndeyekuimisa zvinoenderana nezvinodiwa pabvunzo.Kazhinji kutaura, isu tichaseta voltage yekuyedza zvinoenderana ne2 nguva yekushanda voltage pamwe ne1000V.Semuenzaniso, kana magetsi ekushanda echigadzirwa ari 115VAC, tinoshandisa 2 x 115 + 1000 = 1230 Volt semhepo yekuedza.Ehe, iyo bvunzo voltage ichavawo neyakasiyana marongero nekuda kwemagiredhi akasiyana e insulating layer.
A: Aya mazwi matatu ese ane chirevo chakafanana, asi anowanzo shandiswa zvakasiyana muindasitiri yekuyedza.
A: Insulation kuramba bvunzo uye kumira voltage bvunzo dzakafanana.Isa magetsi eDC anosvika 1000V kumapoinzi maviri anoedzwa.Iyo IR bvunzo inowanzopa kukosha kwekupokana mumamegohms, kwete iyo Pass/Fail inomiririra kubva kuHipot bvunzo.Kazhinji, magetsi ekuedza ndeye 500V DC, uye kukosha kwekudzivirira (IR) hakufaniri kuva pasi pema megohms mashoma.Iyo insulation yekudzivirira bvunzo ndeye isingaparadze bvunzo uye inogona kuona kana iyo insulation yakanaka.Mune mamwe maratidziro, iyo insulation yekudzivirira bvunzo inoitwa kutanga uyezve inomira voltage bvunzo.Kana iyo insulation resistance test ikatadza, iyo stand voltage test inowanzotadza.
A: Muedzo wekubatanidza pasi, vamwe vanhu vanoudaidza kuti pasi kuenderera mberi (Ground Continuity) bvunzo, inoyera iyo impedance pakati peDUT rack uye pasi positi.Muyedzo wevhu rebhondi unoona kana dunhu redziviriro reDUT richikwanisa kubata chikanganiso chiripo kana chigadzirwa chikakundikana.Iyo yepasi bond tester inoburitsa huwandu hwe30A DC hwazvino kana AC rms ikozvino (CSA inoda 40A kuyerwa) kuburikidza nepasi redunhu kuona kusamira kwepasi redunhu, iro rinowanzova pasi pe0.1 ohms.
A: Iyo IR bvunzo bvunzo yemhando inopa chiratidzo chehukama hwemhando yekudzivirira system.Kazhinji inoedzwa neDC voltage ye500V kana 1000V, uye mhedzisiro inoyerwa nemegohm kuramba.Iyo yekumira voltage bvunzo inoshandisawo yakakwira voltage kumudziyo uri muyedzo (DUT), asi iyo yakashandiswa voltage yakakwira kupfuura iyo yeIR bvunzo.Inogona kuitwa pa AC kana DC voltage.Mibairo inoyerwa mumamirioni kana mamicroamps.Mune mamwe maratidziro, iyo IR bvunzo inoitwa kutanga, ichiteverwa neyekumira voltage bvunzo.Kana mudziyo uri muyedzo (DUT) ukatadza bvunzo dzeIR, mudziyo uri mukuyedzwa (DUT) unotadzawo kushingirira bvunzo dzevoltage pamhepo yakakwira.
A: Chinangwa cheiyo grounding impedance bvunzo ndeyekuona kuti tambo yekudzivirira yepasi inogona kumira nekuyerera kwechikanganiso chazvino kuti ive nechokwadi chekuchengetedzwa kwevashandisi kana mamiriro asina kujairika aitika muchigadzirwa chemidziyo.Iyo yekuchengetedza mwero yekuyedza voltage inoda kuti iyo yakanyanya kuvhurika-inotenderera voltage haifanirwe kudarika muganho we12V, iyo inoenderana nekuchengetedza kwemushandisi kufunga.Kamwe kutadza kwekuyedza kunoitika, mushandisi anogona kuderedzwa kusvika panjodzi yekuvhunduka kwemagetsi.Iyo yakajairika chiyero inoda kuti kuramba kwepasi kunofanirwa kunge kuri pasi pe0.1ohm.Zvinokurudzirwa kushandisa AC ikozvino bvunzo ine frequency ye50Hz kana 60Hz kusangana nemamiriro ekushanda chaiwo echigadzirwa.
A: Pane mimwe misiyano pakati peyekumira voltage bvunzo uye yekuvuza kwesimba bvunzo, asi kazhinji, misiyano iyi inogona kupfupikiswa sezvinotevera.Iyo yekumira voltage bvunzo ndeye kushandisa yakakwira voltage kudzvanya kuvharirwa kwechigadzirwa kuti uone kana simba rekudzivirira rechigadzirwa rakakwana kudzivirira yakawandisa kuvuza ikozvino.Iyo leakage ikozvino bvunzo ndeyekuyera iyo leakage ikozvino inoyerera kuburikidza nechigadzirwa pasi peyakajairwa uye imwechete-chikanganiso mamiriro emagetsi kana chigadzirwa chiri kushandiswa.
A: Musiyano wenguva yekubuda unoenderana necapacitance yechinhu chakaedzwa uye dunhu rekubuda reiyo stand voltage tester.Iyo yakakwirira capacitance, iyo yakareba nguva yekubuda inodiwa.
A: Midziyo yeKirasi I inoreva kuti zvikamu zvinosvikika conductor zvakabatana kune inodzivirira conductor pasi;kana iyo yekutanga kuvharirwa ikatadza, iyo inodzivirira inodzivirira conductor inofanirwa kumirisana nekukanganisa ikozvino, ndiko kuti, kana iyo yekutanga insulation ikatadza, zvikamu zvinosvikika hazvigone kuve mhenyu zvikamu zvemagetsi.Zvichitaurwa zviri nyore, midziyo ine pini yekumisa yetambo yemagetsi midziyo yeKirasi I.Kirasi II michina haingovimbi ne "Basic Insulation" kudzivirira kumagetsi, asi inopawo mamwe matanho ekuchengetedza akadai se "Double Insulation" kana "Reinforced Insulation".Iko hakuna mamiriro ane chekuita nekuvimbika kwevhu rekudzivirira kana kuisa mamiriro.
