Nthawi zambiri, thupi la munthu limatha kumva kuti mtengo wapano wa kukondoweza ndi pafupifupi 1 mA.Thupi la munthu likadutsa 5 ~ 20mA, minofu imagwedezeka ndikugwedezeka, kotero kuti munthuyo sangalekanitsidwe ndi waya.Chopangidwa ndi mphamvu yamagetsi yamakono ndi nthawi yololedwa ndi mayiko ambiri ndi 30mA * S kukana thupi laumunthu Nthawi zambiri 1500 ohms ~ 300000 ohms, mtengo wake ndi 1000 ohms ~ 5000 ohms, mtengo wovomerezeka ndi 1500 ohms
Mtengo wotetezeka wamagetsi ukhoza kupezedwa kuchokera ku zomwe thupi la munthu likuchita mpaka pano komanso kukana kwa thupi la munthu: mtengo wamagetsi otetezeka m'dziko lathu nthawi zambiri ndi 12 ~ 50V.
Kupirira voteji, kutayikira panopa ndi chitetezo cha mphamvu EMI fyuluta:
Kupanikizika ndi chitetezo
1. Ngati Cx capacitor mu fyuluta yathyoledwa, imakhala yofanana ndi kagawo kakang'ono ka gridi ya AC, zomwe zimapangitsa kuti zipangizozo zisiye kugwira ntchito;ngati Cy capacitor yathyoledwa,
Ndizofanana ndi kuwonjezera mphamvu yamagetsi a gridi yamagetsi ya AC ku casing ya zida, zomwe zimawopseza mwachindunji chitetezo chaumwini komanso zimakhudza zida zonse zokhala ndi zitsulo zachitsulo monga malo owonetsera.
Kutetezedwa kwa dera kapena zida, nthawi zambiri kumayambitsa kuwotcha mabwalo kapena zida zina.
2. Miyezo yapadziko lonse lapansi yolimbana ndi zovuta zachitetezo ndi iyi:
Germany VDE0565.2 High Voltage Test (AC) P, N mpaka E 1.5kV/50Hz 1 min
Switzerland SEV1055 High Voltage Test (AC) P, N mpaka E 2*Un+1.5kV/50Hz 1 min
US UL1283 High Voltage Test (AC) P, N mpaka E 1.0kV/60Hz 1 min
Germany VDE0565.2 High Voltage Test (DC) P mpaka N 4.3 * Un 1 min
Switzerland SEV1055 High Voltage Test (DC) P mpaka N 4.3*Un 1 min
US UL1283 High Voltage Test (DC) P mpaka N 1.414kV 1 mphindi
fotokozani:
(1) Chifukwa chogwiritsira ntchito magetsi a DC mu PN test test voltage ndikuti mphamvu ya Cx ndi yaikulu.Ngati mayeso a AC agwiritsidwa ntchito, kuchuluka kwapano komwe kumafunikira ndi tester voltage tester
Zimakhala zazikulu kwambiri, zomwe zimapangitsa kuti zikhale zazikulu komanso zokwera mtengo;vutoli kulibe pamene DC ntchito.Koma kuti mutembenuzire voteji ya AC kuti ikhale yofanana ndi DC yogwira ntchito
Mwachitsanzo, mphamvu yayikulu ya AC yogwira ntchito ndi 250V(AC)=250*2*1.414=707V(DC), motero chitetezo cha UL1283 ndi
1414V(DC)=707*2.
(2) Kupirira kuyesedwa kwa magetsi mu bukhu la fakitale yodziwika bwino padziko lonse lapansi yaukadaulo:
Corcom Corporation (USA) P, N mpaka E: 2250V(DC) kwa mphindi imodzi P mpaka N: 1450V(DC) kwa mphindi imodzi
Schaffner (Switzerland) P, N mpaka E: 2000V(DC) kwa mphindi imodzi P mpaka N: Kupatulapo
Opanga zosefera zapakhomo nthawi zambiri amatchula malamulo achitetezo aku Germany VDE kapena malamulo achitetezo aku America UL
Kutayikira panopa ndi chitetezo
Wamba wamba capacitor Cy wanthawi zonse zosefera zili ndi mapeto amodzi omwe amathetsedwa muzitsulo zachitsulo.Kuchokera pakuwona kugawanika kwamagetsi, chitsulo chachitsulo cha fyuluta chili nacho
1/2 ya voliyumu yovotera, kotero kuchokera kumalo otetezedwa, kutayikira kwapano (kutuluka kwaposachedwa) kuchokera ku fyuluta kupita pansi kudzera ku Cy kuyenera kukhala kochepa momwe kungathekere.
zidzaika pangozi chitetezo chaumwini.
Malamulo oteteza kutayikira kwanthawi yayitali m'maiko ena akuluakulu ogulitsa padziko lapansi ndi awa:
Zindikirani: 1. Kutayikira komweku kumayenderana mwachindunji ndi magetsi a gridi ndi ma frequency a grid.Kutayikira komweku kwa fyuluta ya gridi ya 400Hz ndi kuwirikiza ka 8 kuposa gridi ya 50Hz (ie
Zosefera zomwe zimagwirizana ndi malamulo achitetezo mu ma grid frequency mphamvu yamagetsi mwina sizingakwaniritse malamulo achitetezo pamagetsi apamwamba kwambiri)
2. Poyang'ana kutayikira kwa fyuluta, dera loyezera lomwe likugwirizana ndi miyezo yapadziko lonse liyenera kugwiritsidwa ntchito (monga momwe tawonetsera pa chithunzi pansipa).Poyezera, chitsulo chachitsulo sichingathe
Zowonongeka, ziyenera kuimitsidwa.
Chojambula chotchinga cha fyuluta yaposachedwa yoyeserera yoyeserera:
Mapulogalamu
1: Zipangizo zapakhomo - kupirira mayeso amagetsi a firiji:
Yesani mphamvu yopirira pakati pa gawo lamagetsi ndi pansi.Zoyeserera: AC1500V, 60s.Zotsatira za mayeso: palibe kuwonongeka ndi flashover.Chitetezo chachitetezo: Wogwiritsa ntchito amavala magolovesi oteteza, benchi yogwirira ntchito imayikidwa ndi zotchingira zotchingira, ndipo chidacho chimakhazikika bwino.Ubwino wa opareta: kuchita maphunziro asanayambe ntchito, odziwa bwino zida zogwirira ntchito, ndipo amatha kuzindikira ndi kuthana ndi kulephera kwa zida.
Zida zomwe mungasankhe:Zithunzi za RK2670/71/72/74, RK7100/RK9910/20 mndandanda woyendetsedwa ndi pulogalamu.
Zolinga zoyesera
Pangani mphamvu ya chipangizocho kukhala yokhazikika, ndikuyesa kupirira kwamagetsi a chinthucho.
Njira yoyesera
1.Lumikizani kutulutsa kwamagetsi kwamphamvu kwa chipangizocho kugawo lamagetsi lolowera mufiriji (LN imalumikizidwa palimodzi) kugawo lamagetsi la grid.Malo otsetsereka (kubwerera) kwa chidacho amagwirizanitsidwa ndi malo apansi a firiji.
2. Alamu yokhazikitsidwa kale imayikidwa molingana ndi muyezo wa wosuta.Khazikitsani nthawi kukhala 60s.
3. Yambani chida, sinthani voliyumu kuti muwonetse 1.5Kv, ndikuwerenga mtengo wapano.Panthawi yoyesera, chidacho sichikhala ndi alamu yowonjezereka, zomwe zimasonyeza kuti mphamvu yopirira yadutsa.Ngati alamu ikuchitika, mankhwalawa amawerengedwa kuti ndi osayenera.
Kusamalitsa
Pambuyo pa mayesowo, mphamvu ya chidacho iyenera kuzimitsidwa isanayambe mankhwala ndipo mzere woyesera ukhoza kutengedwa kuti zisawonongeke ndi ngozi zachitetezo.
2.Kutayikira kwatsopano kuyesa kwa zida zapanyumba - makina ochapira
Mayesero: Pamaziko a nthawi 1.06 ya voteji yogwira ntchito, yesani mtengo womwe ukutuluka pakati pa magetsi ndi malo oteteza ma netiweki oyeserera.Cholinga choyesera: Kaya zitsulo zowonekera pabokosi zili ndi mafunde osatetezeka pomwe chida chamagetsi chomwe chikuyesedwa chikugwira ntchito.
Zotsatira zoyesa: werengani mtengo womwe ukutuluka, ngakhale ukuposa mtengo wotetezeka, chidacho chidzamveka phokoso ndi kuwala.Chitetezo Chidziwitso: Pakuyesa, chida ndi DUT zitha kulipiritsidwa, ndipo ndizoletsedwa kuchigwira ndi manja kuti mupewe kugwedezeka kwamagetsi ndi ngozi zachitetezo.
Zosankha zosafunikira:Zithunzi za RK2675, Mtengo wa RK9950mndandanda, malinga ndi mphamvu ya mankhwala oyesedwa.Gawo limodzi ndilosankha kuchokera ku 500VA-5000VA, ndipo gawo lachitatu ndiMtengo wa RK2675WT, yomwe ili ndi ntchito ziwiri za magawo atatu ndi gawo limodzi.
Njira zoyesera:
1: Chidacho chimayatsidwa, ndipo magetsi amakhala okhazikika.
2: Yatsani chosinthira mphamvu cha chida, zenera lowonetsera chida lidzayatsa.Dinani batani loyesa / lokonzekera, sankhani mtundu wamakono wa 2mA / 20mA, sinthani potentiometer ya PRE-ADJ, ndikukhazikitsa alamu.Kenako tumphuka batani preset / kuyesa kuyesa dziko.
3: Lumikizani chinthu chamagetsi choyesedwa ndi chidacho, yambitsani chidacho, kuyatsa koyesa kuyatsa, sinthani chowongolera chamagetsi kuti chiwonetsero chamagetsi chikwaniritse zofunikira zoyeserera, ndipo mutawerenga kuchuluka kwaposachedwa, yambitsaninso chidacho ndikusintha. mphamvu yamagetsi mpaka yochepa.
Zindikirani: Pakuyesa, musakhudze chipolopolo cha chida ndi DUT.
Chachitatu: kuyesa kwapansi
Zoyeserera: 25A yamakono, kukana zosakwana 100 milliohms.Yesani kukana pakati pa malo oyika mphamvu ndi zitsulo zowonekera pamlanduwo.
Zida zomwe mungasankhe:Zithunzi za RK2678XM (panopa 30/32/70 ampere mwasankha),Mtengo wa RK7305 makina oyendetsedwa ndi pulogalamu,Mtengo wa RK9930 mndandanda (panopa 30/40/60 ampere mwasankha), mndandanda wolamulidwa ndi pulogalamu wokhala ndi chizindikiro cha PLC, RS232, ntchito zoyankhulirana za RS485.
mayeso masitepe
1: Lumikizani chingwe champhamvu cha chidacho kuti muwonetsetse kuti chidacho chakhazikika bwino.
2: Yatsani mphamvu ndikukhazikitsa malire apamwamba a kukana kwa alamu.
3: Lumikizani waya woyesera ku terminal ya chida chachitsulo molingana ndi mtundu ndi makulidwe (waya wandiweyani umalumikizidwa ndi positi yayikulu, ndipo waya woonda umalumikizidwa ndi positi yaying'ono).
4: Zigawo zoyeserera zimalumikizidwa pansi pa chipangizocho poyesedwa (waya wapansi wa mphamvu yolowera kumapeto) ndi malo oteteza a casing (zigawo zopanda zitsulo) kuwonetsetsa kuti malo oyeserera atsegulidwa, apo ayi mayeso apano sangathe kusinthidwa.
5: Yambitsani chida (dinani KUYAMBA kuti muyambe), chowunikira choyesera chida chilipo, sinthani zamakono (zotsatira zoyendetsedwa ndi pulogalamu ziyenera kukhazikitsidwa poyamba) pamtengo wofunikira pa kuyesa, ndikuwerenga mtengo wotsutsa.
6: Ngati mayesowo akulephera, chidacho chidzakhala ndi alamu ya buzzer (phokoso ndi kuwala), ndipo mndandanda wa zotsatira zoyesedwa ndi pulogalamuyo udzakhala ndi PASS, FAIL zizindikiro zowunikira ndi ma alarm ndi ma alarm.
Nthawi yotumiza: Oct-19-2022
