ZOO kem yuav yog qhov zoo tshaj plaws thiab feem ntau kev txhawj xeeb los ntawm loj tshiab neeg!
Nram qab no yog loj piav rau ib qho tseem ceeb kev tsis:
Rwb thaiv tsev Kuj los yog IR raws li lub npe pom zoo yog qhov tsis kam
lub rwb thaiv tsev. IR yeej tiv thaiv cov khoom siv hluav taws xob los ntawm luv Circuit Court. IR muaj nuj nqis
feem ntau ntau heev hauv qhov ntau ntawm Mega-ohm lossis Mohm.
Kub Coefficient nyob ntawm seb cov dielectric yog Chav Kawm 1 los yog Chav Kawm 2. Ib qho iav
capacitor (tshwj xeeb tshaj yog cov chav kawm 2) feem ntau muaj qhov kub zoo dissipation factor, high zaus coefficient ntawm dissipation.
Qhov zoo tshaj yuav yaj (tan δ):los yog DF txhais tias yog qhov sib piv ntawm ESR thiab kev pib ua haujlwm tau. Nws yog tus
dissipation factor kuj tseem hu ua kab ntsig ntawm lub kaum ntse ntse poob thiab feem ntau hais tawm hauv feem pua.
Cov qauv paub txog hais tawm txog qhov tawm nyob rau ntawm cov zaus uas nquag muaj li 120Hz rau Aluminium
electrolytic thiab Tantalum capacitors thaum rau cov zaj duab xis capacitors yog 1 kHz thiab 1 MHz rau capacitors ceramic.
Ib nrab tawm (PD): yog ib qho hluav taws xob paug los yog muaj tias bridges ib feem me me ntawm cov rwb thaiv tsev
ntawm ob txoj kev electrodes.PD yuav tshwm sim tom tej taw tes nyob rau hauv lub rwb thaiv tsev system, qhov twg lub fais teb
lub dag lub zog tshaj lub neej puas lub dag lub zog ntawm feem ntawm lub insulating material.PD yuav tshwm sim nyob rau hauv voids hauv
khoom rwb thaiv tsev, nyob rau qhov chaw ntawm insulating cov ntaub ntawv uas vim kab mob los yog irregularities, tsis pub dhau roj npuas
nyob rau hauv cov kua rwb thaiv tsev los yog ib ncig ib electrode nyob rau hauv roj (corona ua si).
Dielectric Khoom siv:
|
Tsab ntawv (tsawg temp) |
Lej (siab temp) |
Tsab ntawv (hloov) |
|
X = −55 ° C (°67 ° F) |
2 = +45 ° C (+113 ° F) |
E = ± 4.7% |
|
Y = −30 ° C (°22 ° F) |
4 = +65 ° C (+149 ° F) |
F = ± 7.5% |
|
Z = +10 ° C (+50 ° F) |
5 = +85 ° C (+185 ° F) |
P = ± 10% |
|
|
6 = + 105 ° C (+221 ° F) |
R = ± 15% |
|
|
7 = + 125 ° C (+257 ° F) |
S = ± 22% |
|
|
8 = + 150 ° C (+302 ° F) |
T = +22 txog −33% |
|
|
|
U = +22 rau −56% |
|
|
|
V = +22 txog −82% |
Piv txwv li, Z5U capacitor yuav ua haujlwm ntawm +10 ° C rau +85 ° C nrog lub zog hloov pauv ntawm feem ntau + 22% mus rau 56%. Ib lub tshuab hluav taws xob X7R yuav khiav lag luam los ntawm −55 ° C mus rau +125 ° C nrog lub zog hloov pauv ntawm feem ntau ± 15%
HVC's N4700 Dielectric Khoom siv: zoo ib yam li lwm lub tuam txhab, electroceramics txiav txim siab cov yam ntxwv tseem ceeb
ntawm lub kaus mom. HVC siv sijhawm 3 xyoo thiab ntau lab daus las los tsim cov ntawv cog lus patent strontium titanate, uas yog N4700 hom.Qhov no
N4700 cov khoom muab zoo heev ntawm cov zaus muaj cov yam ntxwv, zoo heev tiv thaiv rwb thaiv tsev thiab cov quav me me
ceeb thiab super ntev lub neej mus txog rau 20 xyoo.
Kev Specification Piv:
Txhawm rau qhia cov neeg siv khoom HVC cov khoom hauv kev sib sib zog nqus, peb qhia HVC cov cuab yeej kev cai piv nrog cov sib txawv uas twb muaj lawm
hom ntawm cov teb chaws Europe thiab qaum teb Amercia.
Amercian Hom E *****
muab tsuas yog ceramic disc kaus mom, muab tib yam rau HVC dielectric cov khoom siv X5F.
Dissipation zoo tshaj rau X5F yog 1.5%;
HVC tus X5F tivthaiv tuaj yeem yog Qhov Kev Xa Tawm Tus Nqi xa mus rau 1%.
Maximun Voltage qhia rau catalog 30Kv, 2200pf;
HVC cov yeeb yam ntawm cov khoom lag luam (cov khoom tsis tu ncua) 50Kv, 3300pf.
Flash Xeem 130% ntawm Nyob Voltage, zoo li 30Kv, Nyem xeem yuav 40KvDc.
HVC lub zog dielectric tuaj yeem yog 150% rau 200%, txhais tau tias thaum hais cov xov ntsuas hluav taws xob yog 30Kv, kev kuaj hluav taws xob tuaj yeem tiv taus
45Kv rau 60KvDc.
Kub yam ntxwv: (NP0 rau Z5U)
HVC tus cwj pwm kub siab :(N4700, Y5T, Y5U)
European Hom G ******:
muaj tsuas doorknob capacitor.
10Kv max capacitance 8000pf, thaum HVC tau tib yam 8000pf, tib N4700 hom ntaub ntawv;
20kv max capacitance 4000pf, thaum HVC yuav ua tau 10000pf;
30kv max capacitance 2700pf, thaum HVC yuav ua tau 3300pf;
40kv max capacitance 2000pf, thaum HVC tau tib yam 2000pf;
50kv max capacitance 1700pf, thaum HVC yuav ua tau 15000pf (Y5V) thiab 5000pf (Y5T).
G ******:siv N4700 khoom, dissipation zoo tshaj yuav 0.3% max, thaum HVC yeej yuav nyob ib ncig ntawm 0.1% thiab yeej tsis siab dua
tshaj 0.2%
G ******:Rwb thaiv tsev kuj 10,000mOhm (N4700) min, thaum HVC feem ntau lub sij hawm yuav ua tau 200,000mOhm (N4700) min.
American Nrov Hom H **:
muaj tsuas qhov rooj capacitor pob qhov rooj, wildly siv nyob rau hauv North Amercian ua lag luam.
Tsis paub lub dielectric khoom, dissipation tshaj tus nqi yuav max 0.5%, thaum HVC majorly siv N4700 dielectric
khoom, dissipation tshaj yuav tsuas 0.1% mus rau 0.2%, feem ntau lub sij hawm 0.1% xwb.
North American Famous Brand H **:
dav muag hauv North America, Russia, Nyij Pooj etc.offer ob qho tib si disc disc
lub peev xwm thiab qhov rooj pob qhov rooj capacitor.
Rau ceramic disc lub kaus mom, tsuas yog Y5P, Y5U dieletric cov khoom muaj, cov tsis muaj qhov zoo tsis sib xws kub txias, thaum
HVC kev N4700 rau tej hub disc kaus mom.
Qhov siab tshaj qhov muaj peev xwm tshaj plaws, H *** qhia tau yog 20Kv 4700pf (Y5U), hos HVC muab 50KV 3300pf (Y5T).
Isulation tsis kam yog min 1000mOhm, thaum HVC IR tuaj yeem yog 10 000mOhm
Kev rho tawm yog 5% max (Y5P), thaum HVC qhov siab DF yog 2% (Y5U, Y5V)
European Hom M *****:
Cov tuam txhab nto moo hauv ntiaj teb, muab lub qhov rooj pob qhov rooj capacitor nyob rau ntau qhov sib txawv, cov khoom siv dieletric hauv Y5U thiab
N4700 qib.Qhov lub npe loj no cov khoom muaj kev txhawj xeeb rau qee tus nqi paug tawm ib nrab, lawv cov khoom tuaj yeem yog pc tsawg kawg ntawm kev ntaus nqi
AC voltage, Thaum HVC muab ze ze tib theem zoo ntawm pC qis.
Cov nqi them qee feem yuav <5pC @ AC ratedVoltage.while HVC tuaj yeem sib npaug <5pC ntawm cov xwm txheej zoo sib xws.
N4700 cov khoom nrog rwb thaiv tsev Rhiab> = 1011ohm, Thaum HVC tus kheej N4700 cov khoom siv yog ob npaug, min 2x1011ohm
Japanese ntiaj teb nto moo Hom T **:
qhov chaw tsim tshuaj no yog lub ntiaj teb chav kawm passive tsim chaw tsim tshuaj paus, nrog ntau heev ntau lawm
cog rau hauv lub ntiaj teb, lawv kuj tsim lub qhov rooj pob qhov rooj capacitor, thiab txua lawv tus kheej cov khoom siv ceramicielielibric
yog Z5T, Y5P thiab Y5S, cov uas tsuas yog cov ntsuas kub ntawm soso, lawv tsis muaj N4700 qib khoom, uas
muab lub loj loj thiab siab dielectric lub zog ua haujlwm. Txawm ntau Y5S yog ib hom khoom tsis PB pub dawb.
Tab sis ua raws RHHS “EU tswj 2002 / 95 / EC, hmoov txhuas, cadmium, mercury, hexavalent chromium, thiab tej
bromine-raws li nplaim taws retardants, PBB thiab PBDE,tsis tau muab los siv, tsuas yog rau zam daim ntaub ntawv”Rau siab
daim ntawv thov hluav taws xob, tsis tas yuav muaj hmoov txhuas dawb.Tiam sis tsis ua cov khoom pub dawb tsis tuaj yeem ua kom zoo txaus los ntawm qee tus neeg siv khoom loj. Qhov loj tshaj plaws
voltage capacitance tus nqi tsuas yog 50kv 2100pf, tab sis tuaj yeem pom 20kvAC 1080p, qhov 20kvAC tuaj yeem kwv yees sib npaug li 80kvDC.
Thaum HVC tam sim no muaj peev xwm ua 150kvDc (50kvAC), 800pf khoom, peb HVC muaj peev xwm ntau lawm rau qhov kev thov siab kawg.
Rwb thaiv tsev Ua hauj yog 100,000mOhm min, thaum HVC lub max IR yog ob npaug, min hauv 200,000mOhm.
Nqe Sib Piv rau HVC thiab Lwm tus:
Los ntawm saum toj no peb paub HVC qib zoo yog siab heev, peb yog cov tib theem zoo ntawm lub ntiaj teb nto moo hom
Vishay, TDK, Murata, Morgan thiab lwm yam ... Thiab peb paub meej tias 20% txog 30% tus nqi qis dua nyob rau hauv dav dav.
Leadtime Sib Piv rau HVC thiab Lwm tus:
HVC cov qauv kev tsim khoom txhuas lub sijhawm rau lub qhov rooj pob qhov rooj muaj peev xwm yog 60 hnub (8 lub lis piam), thaum ib txwm muaj kev xav tau sab saum toj
14 lub lis piam.
Yooj Yim Sib Piv rau HVC thiab Lwm tus:
HVC lub zog coj kuj tseem muaj cov qauv hloov tau yooj yim, zoo li GIS (Gas Insulated Switchgear) cov qhua tuaj noj mov, lawv
feem ntau xav tau qhov loj me me ntawm lub hau loj, peb offernon-encapsulation cap kom tau raws li cov cai nruj. Thaum
lwm cov chaw tsim tshuaj paus tsis yoog raws li peb, lossis hais rau MOQ loj heev.
