1, Test musimboti:
a) Kutsungirira voltage bvunzo:
Iyo yakakosha kushanda musimboti ndeye: enzanisa iyo inovuza ikozvino inogadzirwa neyakaedzwa chiridzwa payakakwira voltage yebvunzo yakabuda nevoltage tester ine preset kutonga ikozvino.Kana iyo leakage ikozvino yaonekwa ishoma pane preset kukosha, chiridzwa chinopfuura bvunzo.Kana iyo yekuvuza ikozvino yaonekwa yakakura kupfuura kutonga ikozvino, bvunzo voltage inogurwa uye inonzwika uye yekuona alarm inotumirwa kunze, kuitira kuona kuti voltage inomira simba rechikamu chakaedzwa.
Yekutanga bvunzo yedunhu pasi bvunzo nheyo,
Iyo voltage inomira tester inonyanya kuumbwa ne AC (yakananga) ikozvino yakakwira voltage magetsi, kudzora nguva, yekuona dunhu, chiratidzo chedunhu uye alarm yedunhu.Musimboti wekushanda ndewekuti: chiyero chekuvuza ikozvino chinogadzirwa nechiridzwa chakaedzwa pabvunzo yakakwira voltage inobuda nevoltage tester inofananidzwa neyakagadzikwa kutonga ikozvino.Kana iyo yekuvuza ikozvino yaonekwa iri shoma pane preset kukosha, chiridzwa chinopfuura bvunzo, Kana iyo yekuvuza yaonekwa yakakura kupfuura kutonga kwazvino, magetsi ekuyedza anogurwa kwechinguva uye alarm inonzwika uye yekuona inotumirwa kuti ione magetsi. kutsungirira kusimba kwechikamu chakaedzwa.
b) Insulation impedance:
Isu tinoziva kuti voltage ye insulation impedance test inowanzo 500V kana 1000V, iyo yakaenzana nekuyedza DC inomira voltage test.Pasi pemagetsi aya, chiridzwa chinoyera kukosha kwazvino, uye chobva chawedzera ikozvino kuburikidza nemukati wedunhu kuverenga.Pakupedzisira, inopfuudza mutemo weOhm: r = u/i, uko iwe uri 500V kana 1000V yakaedzwa, Uye ini ndiri iyo yekudonha ikozvino pane iyi voltage.Zvinoenderana neiyo inomira voltage test chiitiko, tinogona kunzwisisa kuti yazvino idiki kwazvo, kazhinji isingasviki 1 μ A .
Zvinogona kuoneka kubva pamusoro apa kuti musimboti weinsulation impedance bvunzo wakangofanana neiyo yekumira voltage test, asi ingori imwe kutaura kweOhm mutemo.Leakage ikozvino inoshandiswa kutsanangura kuita kwekudzivirira kwechinhu chiri kuedzwa, nepo insulation impedance iri kuramba.
2. Chinangwa chevoltage inomira bvunzo:
Voltage inomira bvunzo bvunzo isingaparadze, iyo inoshandiswa kuona kana iyo insulation simba rezvigadzirwa inokodzera pasi peinopfuudza yakakwira voltage.Inoshandisa yakakwira voltage kumidziyo yakaedzwa kweimwe nguva kuti ive nechokwadi chekuti insulation performance yemidziyo yakasimba zvakakwana.Chimwe chikonzero chebvunzo iyi ndechekuti inogona zvakare kuona kumwe kukanganisa kwechiridzwa, senge isina kukwana creepage chinhambwe uye kusakwana kwemagetsi kubvumidzwa mukugadzira.
3, Voltage inomira bvunzo voltage:
Pane mutemo wakajairwa weyeyedzo voltage = magetsi emagetsi × 2+1000V.
Semuenzaniso: kana magetsi emagetsi echigadzirwa chekuyedza ari 220V, iyo bvunzo voltage = 220V × 2+1000V=1480V.
Kazhinji, iyo yekumira voltage yekuyedza nguva iminiti imwe.Nekuda kwehuwandu hukuru hwemagetsi ekupikisa bvunzo pamutsetse wekugadzira, nguva yekuyedza inowanzo kuderedzwa kusvika mashoma mashoma.Pane imwe nheyo inoshanda.Kana nguva yekuyedza yakaderedzwa kusvika 1-2 masekonzi chete, iyo bvunzo voltage inofanirwa kuwedzerwa ne10-20%, kuitira kuti ive nechokwadi chekuvimbika kwekuvharira muyedzo yenguva pfupi.
4. Alarm current
Kuiswa kwearamu ikozvino kuchatemwa maererano nezvigadzirwa zvakasiyana.Nzira yakanakisa ndeyekuita yekuvuza ikozvino bvunzo yebhechi yemasampuli pamberi, tora avhareji kukosha, wobva waona kukosha kwakakwira zvishoma pane iyi avhareji kukosha seyazvino yakatarwa.Nekuti kuvuza ikozvino kwechiridzwa chakaedzwa kuripo, zvinodikanwa kuve nechokwadi chekuti alarm yazvino seti yakakura zvakakwana kudzivirira kukonzereswa nekukanganisa kwazvino, uye inofanirwa kunge iri diki zvakakwana kudzivirira kupfuudza isina kukodzera sampuli.Mune zvimwe zviitiko, zvinogonekawo kuona kana sampuli ine kusangana neyekubuda kweiyo voltage tester nekuisa iyo inonzi yakaderera alarm ikozvino.
5, Kusarudzwa kweAC uye DC bvunzo
Eyedzo voltage, mazhinji emazinga ekuchengetedza anobvumira kushandiswa kwe AC kana DC voltage mukumira bvunzo dzemagetsi.Kana AC test voltage ikashandiswa, kana iyo peak voltage yasvikwa, iyo insulator yekuedzwa inotakura iyo yakanyanya kudzvanywa kana iyo yepamusoro kukosha yakanaka kana yakaipa.Naizvozvo, kana zvikasarurwa kusarudza kushandisa DC voltage bvunzo, zvinodikanwa kuve nechokwadi kuti iyo DC bvunzo voltage yakapetwa kaviri AC test voltage, kuitira kuti DC voltage ienzane nepamusoro kukosha kwe AC voltage.Semuenzaniso: 1500V AC voltage, kuti DC voltage ibudise huwandu hwakafanana hwekushushikana kwemagetsi hunofanirwa kuita 1500 × 1.414 iri 2121v DC voltage.
Imwe yemabhenefiti ekushandisa DC test voltage ndeyekuti muDC modhi, yazvino inoyerera kuburikidza nearamu ikozvino yekuyeresa mudziyo wevoltage tester ndiyo chaiyo ikozvino inoyerera kuburikidza nesample.Imwe mukana wekushandisa DC kuyedzwa ndeyekuti voltage inogona kuiswa zvishoma nezvishoma.Kana iyo voltage ichiwedzera, mushandisi anogona kuona ikozvino inoyerera kuburikidza nemuenzaniso kusati kwaitika.Izvo zvakakosha kuti uzive kuti kana uchishandisa DC voltage withstand tester, sampuli inofanirwa kuburitswa mushure mekunge bvunzo yapera nekuda kwekuchaja kwecapacitance mudunhu.Muchokwadi, zvisinei kuti yakawanda sei voltage inoedzwa uye hunhu hwechigadzirwa, yakanakira kuburitsa usati washandisa chigadzirwa.
Izvo zvakashata zveDC voltage standstand test ndezvekuti inogona kungoisa test voltage mune imwe nzira, uye haigone kuisa kushushikana kwemagetsi pane maviri polarity seAC bvunzo, uye zvigadzirwa zvemagetsi zvakawanda zvinoshanda pasi pemagetsi eAC.Uye zvakare, nekuti iyo DC test voltage inonetsa kuburitsa, mutengo weDC bvunzo wakakwira kupfuura iwo weAC bvunzo.
Chakanakira AC voltage standstand bvunzo ndechekuti inogona kuona ese voltage polarity, iri padyo nemamiriro anoshanda.Uye zvakare, nekuti AC voltage haizobhadharisa iyo capacitance, kazhinji, iyo yakagadzikana kukosha kwazvino inogona kuwanikwa nekuburitsa zvakananga voltage inoenderana pasina nhanho-kumusoro.Uyezve, mushure mekunge bvunzo yeAC yapera, hapana sampuli yekuburitsa inodiwa.
Kushaikwa kwe AC voltage kushingirira bvunzo ndeyekuti kana paine hombe y capacitance mumutsara uri pasi pekuyedzwa, mune dzimwe nguva, iyo AC bvunzo inozotongwa zvisizvo.Mazhinji ekuchengetedza mwero anobvumira vashandisi kusabatanidza Y capacitors vasati vayedzwa, kana kuti panzvimbo pacho kushandisa DC bvunzo.Kana iyo DC voltage inomira bvunzo ichiwedzerwa paY capacitance, haizofungirwe zvisizvo nekuti iyo capacitance haibvumire chero ikozvino kuti ipfuure panguva ino.
Nguva yekutumira: May-10-2021
