Chii chinonzi ANSI Ceramic Bushing?

ANSI ceramic bushingszvigadzirwa zveceramic bushing zvinoenderana nezvinodiwa nehunyanzvi zvakatarwa neAmerican National Standards Institute (ANSI). Zvakagadzirirwa kusangana nezvinodiwa zve insulation, mechanical support, uye kuchengetedza kuchengetedzwa kwemidziyo yemagetsi ine voltage yakawanda muNorth America nemusika wepasi rose. Zvinosanganisa hunhu hwakanaka hwezvinhu zveceramic nemaitiro akasimba eANSI standards. Ndiyo imwe yemhando huru dzezvikamu zve insulation ine voltage yakawanda musystem yemagetsi.
I. Tsanangudzo Yepakati: Chii chinonziANSI Ceramic Bushing?
Mabushing e ANSI ceramic haarevi chimiro chaicho, asi akagadzirwa, anogadzirwa, uye anoedzwa zvinoenderana nezvinodiwa neANSI (zvakadai seANSI C37 series “High Voltage Switchgear Standards”, ANSI/IEEE C57 series “Transformer Standards”, nezvimwewo). Chinhu chikuru ndechekuona kuvimbika kwe insulation, kugadzikana kwe mechanical, uye kuchinjana kwechigadzirwa munzvimbo ine voltage yakawanda kuburikidza nehukuru hwakajairika, ma performance parameters, uye maitiro ekuyedza, kunyanya akakodzera ma North America power grids nemapurojekiti epasi rose anoshandisa ANSI standards.
II. Mitemo mikuru yeANSI inoteverwa
Kugadzira nekugadzira mabushing eANSI ceramic kunofanirwa kutevedzera mitemo yakawanda yakatarwa. Mitemo mikuru inosanganisira:
​ANSI C37.04​: Inotsanangura maparamita akayerwa, mwero wekudzivirira, uye nzira dzekuyedza (dzakadai semagetsi anomira nefrequency, magetsi anomira nemheni) ye switchgear ine voltage yakakwira (kusanganisira bushings);
​ANSI C37.34Zvinodiwa zvehunyanzvi zvemabushing ane voltage yakawanda, zvinosanganisira kushivirira kwakaenzana, mitoro yemakanika (tensile, bend, torsion), uye mashandiro ekugadzikana kwekupisa;
​ANSI/IEEE C57.19.01​: Mitemo ye transformer bushings, inotsanangura zvakajeka voltage yakayerwa, current yakayerwa, muganho wekukwira kwetembiricha, uye mashandiro ekuvhara bushings;
ANSI C29 nhevedzano​: Simba remakanika uye mwero wekuyedza mashandiro emagetsi ezvinodzivirira zvekunze (kusanganisira mabushing epashure/pamadziro) (senge simba rekukombama, bvunzo yekusvibiswa kwemhepo);
Mitemo iyi inovimbisa kuti ANSI ceramic bushings inoenderana (sekunge saizi dzekuisa dzinoenderana) uye kuvimbika (kuburikidza nekuyedzwa kwakasimba) pakati pevagadziri vakasiyana-siyana nemabhechi.
III. Hunhu hweMaumbirwo uye Zvinhu (Zvakagadziridzwa Zvichienderana neMaitiro eANSI)
Maumbirwo emabushing e ANSI ceramic akafanana neemabushing e ceramic akajairika. Zvisinei, nekuda kwezvinodiwa zvakadzama zveANSI standards, kusarudzwa kwezvinhu uye dhizaini yakadzama zvinonyanya kukoshesa kugona kuchinjika kwakajairika:
1. Chinodzivirira Duramazwi
Sarudzo Yezvinhu​: Shandisa zvakanyanya aluminium oxide ceramic (Al₂O₃ content ≥ 95%) kana silicon dioxide ceramic (sezvinotsanangurwa neASTM C609 standard se "electrical ceramic") kuti uve nechokwadi chekuti insulation resistance (≥ 10¹³ Ω·cm), dielectric strength (≥ 15 kV/mm), uye mechanical strength (bending strength ≥ 150 MPa) zvinosangana nezvinodiwa.
Dhizaini Yechivakwa:
* Mabushing emhando yekunze anowanzova nehuwandu uye nzvimbo yemasiketi eamburera yakatarwa neANSI standards (senge musiyano wedhayamita uye kureba kwekuwedzera kweamburera kwechikamu chimwe nechimwe), kuti zvienderane nezvinodiwa zvedaro rekufamba (senge 10 kV bushing creepage ratio ≥ 25 mm/kV);
* Mabushing emukati anowanzova ma cylinders akapfava kana ane masiketi eumbrella asina kudzika, anotarisa pahukuru hwakaoma (zvichienderana nezvinodiwa zveANSI C37.34 dimensional tolerance, zvakaita sekutsauka kwedhayamita ≤ ± 0.5 mm).
2. Zvishongedzo zveSimbi
Zvivharo/mafilamenti esimbi kumativi ese anoshandisa zvinhu zvesimbi kana zvemhangura zvichienderana nezvinodiwa neANSI B16.5 (zvakadai sesimbi yakagadzika, simbi isina tsvina 304), zvichiita kuti irambe ichidzivirira ngura.
Saizi yema connection terminals inotevedzera zvinodiwa neANSI (sekunge dhayamita yebolt hole, thread specification), zvichiita kuti pave nekuchinjika zvakananga nema busbars anoshandiswa zvakanyanya uye cable connectors kuNorth America (hapana chikonzero chekuwedzera kugadziriswa).
3. Kuvhara uye Kudzivirira(yenzvimbo dzekunze/dzine hunyoro) Zvichienderana nezvinodiwa neANSI C57.19.01, dhizaini yakavharwa kaviri inotorwa (ine silicone rabha inodziya zvakanyanya kana epoxy resin ichizadza mukaha uri pakati pemuviri weceramic nechisungo chesimbi), uye "kuyedzwa kwekunyudzwa mumvura" (senge kudzivirira kuputira kwasara ≥ 100 MΩ mushure memaawa makumi maviri nemana ekunyudzwa mumvura) kunoitwa kuti ive nechokwadi chekuti hainyorove mumvura ine hunyoro hwakawanda uye munzvimbo dzine hunyoro hwakawanda.