Taw qhia
8 Hauv cov tshuab hluav taws xob niaj hnub no, kev ruaj ntseg rwb thaiv tsev yog qhov tseem ceeb rau kev nyab xeeb ntawm kev ua haujlwm. Cov kws tsim hluav taws xob thiab cov pab pawg saib xyuas tau nce siab ntxiv rau cov cuab yeej ntsuas qib siab kom ntseeg tau tias cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob muaj kev ncaj ncees. VLF hipot tester tau dhau los ua cov cuab yeej tseem ceeb tshaj plaws rau tsis yog -kev ntsuas hluav taws xob puas tsuaj hauv thaj teb.
H2: Dab tsi yog VLF Hipot Tester?
2 VLF sawv cev rau Tsawg Zaus, feem ntau ua haujlwm ntawm 0.01 Hz txog 0.1 Hz, ua VLF Hipot testers zoo tagnrho rau kev ntsuas nruab nrab thiab siab -voltage fais fab cables tsis muaj kev ntxhov siab ntau dhau ntawm rwb thaiv tsev. 11 A VLF hipot tsuas yog AC tso zis tester tab sis nrog qhov tso zis tsawg dua 6 Hz lossis 0.0 Hz. Txawm hais tias qhov zaus tsawg heev, nws tseem yog qhov hloov pauv tam sim no nrog polarity reversals txhua ib nrab lub voj voog.
H2: VLF Hipot Tester Ua Haujlwm Li Cas? (Txoj Cai Ua Haujlwm)
1 VLF hipot thev naus laus zis siv 0.1Hz sinusoidal waveforms los kuaj kev rwb thaiv tsev yam tsis muaj hluav taws xob ntau dhau -li 1/5th lub peev xwm ntawm 50/60Hz AC hipot testers. 1 Cov zaus hloov dua siab tshiab thiab ARM7 microcontrollers pab tswj qhov voltage, HV sab tam sim no / voltage 10 sampling{0} sampling 1. Hz tso zis, ntau dua li 60Hz, nws yuav siv sij hawm 600 zaus tsawg dua tam sim no thiab lub zog siv AC voltage rau lub peev xwm thauj khoom, zoo li lub cable ntev. Qhov no ua rau VLF kev sim ua tau zoo rau cov ntawv thov hauv thaj chaw uas qhov chaw siv hluav taws xob loj tsis muaj . 1 Advanced units feature kaw-loop tawm tswv yim rau kev hloov pauv- tawm tawm dawb, tshem tawm cov teeb meem paug tawm hauv cov tshuaj boosters.
H2: VLF Hipot Tester Applications
H3: 1. Kev Ntsuas Hluav Taws Xob Hluav Taws Xob (Pib Daim Ntawv Thov)
2 Kev ntsuas hluav taws xob nrog VLF Hipot testers pom qhov tsis muaj zog xws li voids, paug, lossis ya raws hauv XLPE lossis EPR rwb thaiv tsev ua ntej kev tawg tshwm sim . 7 Tsawg zaus siab voltage generator (VLF) tuaj yeem siv tag nrho rau cable tiv thaiv qhov ntsuas hluav taws xob thiab tau dhau los ua ib qho kev pom zoo thoob ntiaj teb rau kev ntsuas hluav taws xob ntawm nruab nrab thiab qis voltage 6 (V k 6) DC tiv thaiv qhov ntsuas hluav taws xob.
H3: 2. Kev kuaj lub cev muaj zog thiab lub tshuab hluav taws xob
12 Voltage tis nyob rau hauv stator rwb thaiv tsev ntawm VLF sib raug zoo nrog lub cev muaj zog lub cev ua hauj lwm tej yam kev mob dua li nws ua nyob rau hauv DC xeem. Lwm qhov txiaj ntsig tseem ceeb yog vim qhov qis dua reactive zog yuav tsum tau rau kev ntsuam xyuas ntawm VLF piv nrog rau cov kev ntsuam xyuas ntawm kev khiav hauj lwm zaus, VLF qhov chaw me me, sib dua thiab yog li ntawd ntau mobile. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas cov cuab yeej ntsuas qhov hnyav thiab qhov loj me tuaj yeem ua rau kev sim tsis zoo, xws li thaum ua haujlwm ntawm cov cua turbines.
H3: 3. Transformer rwb thaiv tsev kuaj
5 VLF hipot testers feem ntau yog siv rau qhov ntsuas hluav taws xob tiv thaiv kev ntsuas hluav taws xob hluav taws xob, thiab tuaj yeem siv rau cov hluav taws xob hluav taws xob tiv thaiv kev ntsuas hluav taws xob loj.
H3: 4. Tan Delta thiab Partial Discharge Diagnostics
2 VLF tester rau kev kuaj cable kuj txhawb cov kev kuaj mob xws li tan delta ntsuas thiab ib feem ntawm qhov paug tawm, qhia txog kev laus thaum ntxov . 15 Tan delta test ntsuas rwb thaiv tsev noj qab haus huv, thaum PD txheeb xyuas cov teeb meem tshwj xeeb thiab ntsuas lawv qhov hnyav.
H3: 5. Kev siv tsheb ciav hlau thiab kev lag luam
1 Railway traction systems siv 50kV ultra low zaus VLF AC hipot cov cuab yeej los xyuas qhov teeb meem kev ncaj ncees, tiv thaiv kev tawm tsam muaj nqis ntau lab.
H2: VLF Hipot Test Standards Koj Yuav Tsum Paub
23 Cov Qauv Ntsuas Tsawg Heev (VLF) Hipot cov qauv, feem ntau tswj hwm los ntawm IEEE 400, IEEE 400.2, thiab IEC 60502-2, qhia meej voltage, zaus, sijhawm, thiab cov txheej txheem rau kev ntsuam xyuas cable rwb thaiv tsev.
Cov qauv tseem ceeb suav nrog:
IEEE 400.2-2024: 21IEEE 400.2-2024 tsom rau kev sim teb ntawm cov hluav taws xob tiv thaiv hluav taws xob txog li 69 kV thiab suav nrog kev taw qhia txog kev ntsuas ntsuas.
IEC 60502-2: 2014TS EN 21IEC 60502-2: 2014 nyob rau hauv kev sim cov kev cai rau cov cables ntsuas ntawm 6 kV txog 30 kV tom qab kev teeb tsa.
Daim ntawv pov thawj: IEEE 400.3 / IEC 60270: 22 Thov VLF txhawm rau txheeb xyuas thiab ntsuas qhov tso tawm ib nrab. IEEE 400.3 qhia txog cov txheej txheem rau kev soj ntsuam thiab IEC 60270 muab keeb kwm yav dhau los rau kev ntsuam xyuas ib nrab ntawm cov khoom siv hluav taws xob siab.
