Thaum sib piv ibVLF (tsawg zaus) Hipot testernrog lwmVLF Cable Testers, nws yog ib qho tseem ceeb kom nkag siab tias txhua VLF Cable ua tes ua haujlwm ntawm qhov ntsuas ntau heev (feem ntau yog 1} voltage ntsuas ntawm nruab nrab thiab siab voltage fais fab cable. Txawm li cas los xij, lo lus "HIPOT Tester" feem ntau yog hais txogIb hom kev sim ntawm VLF siv rau kev tiv thaiv, thaumLwm cov neeg VLF Cable ua cov neeg ua haujlwm suav nrog kev kuaj mob ntxiv.
Ntawm no yog cov ncauj lus piav qhia:
{{0 {}} hom phiaj & muaj nuj nqi
| Yam zoo | Vlf Hipot Tester | Lwm cov neeg VLF Cable |
|---|---|---|
| Lub Chaw Ua Haujlwm Tseem Ceeb | Withst (pass / swb) xeem nyob rau hauv lub siab voltage | Muaj peev xwm suav nrog withstand + kuaj mob kuaj |
| Kev siv | Ntsuas Cable Rwb Thaiv Tsev | Sim + tshawb xyuas ib nrab tawm (PD), Dissipation Qhov (Tan δ), thiab lwm yam. |
| Khoom uas tsim tau lawm | AC Voltage ntawm qhov tsawg heev | Zoo ib yam, tab sis yuav suav nrog kev txhawb nqa Waveform (sine, square, trapezoid) |
2. Kev kuaj mob lub peev xwm
| Kev txawj | Vlf Hipot Tester | Advanced VLF testers (e . g ., vlf + pd Δ) |
|---|---|---|
| Dhau / swb (tiv taus) | ✔ Yog | ✔ Yog |
| Partial paug (PD) Kuaj | ❌ Tsis yog | ✔ Yog |
| Tan dhta (dissipation yam) | ❌ Tsis yog | ✔ Yog |
| Kev Ntsuam Xyuas Kev Mob Raws Li | ❌ Txwv | ✔ Yog |
| Cable Kev Tshawb Fawb | ❌ Tsis yog | ✔ Yog |
3.} comllexity & nqi
| Kev ua | Vlf Hipot Tester | Kev Tshaj Tawm VLF Cable Tester |
|---|---|---|
| Nyuaj | Yooj yim | Ntau txoj kev nyuaj |
| Tus Neeg Siv Qib Qib | Qi dua | Siab dua (yuav tsum nkag siab txog PD lossis ziab Δ txheeb xyuas) |
| Tus nqi | Qi dua | Siab dua (vim tias ntxiv nta) |
| Qhov loj me / Portility | Feem ntau cog qoob loo | Tej zaum yuav loj dua thiab hnyav dua |
4.}}} Siv cov xwm txheej
| Siv cov ntaub ntawv | Vlf Hipot Tester | LwmVLF Cable Testers |
|---|---|---|
| Kev Kuaj Xyuas Haujlwm | ✔ Yog | ✔ Yog |
| Niaj hnub tu | Kuj Raug Txwv | ✔ Yog (nrog kuaj mob) |
| Kev daws teeb meem | ❌ Tsis yog | ✔ Yog |
| Cable COMPING | ❌ Tsis yog | ✔ Yog |
5. Txheem Ua Raws
Ob hom feem ntau ua raws li cov qauv zoo li:
IEEE 400.2 (Qhia rau kev ntsuas ua teb ntawm cov ntaub thaiv npog hluav taws xob cable tshuab siv vlf)
Iec {60502-2
Cenelec HD 620 S1
Tab sis Advanced VLF cov tub ceev xwm kuj tseem tuaj yeem ua raws li:
Ieee 400.3 (rau pd)
Ieee 400.4 (Rau tan delta)
Ntsiab lus xaus
| Yam zoo | Vlf Hipot Tester | Huab Tiaj Vlf Tester |
|---|---|---|
| Hov ntau | 0.1 hz lossis tsawg dua | 0.1 hz lossis tsawg dua |
| Test Hom | Withstand nkaus xwb | Withstand + Datostics |
| Kev Ntsuas Pd / Tan Δ | ❌ | ✔️ |
| Nyuaj | Yooj yim | Tau siab kawg |
| Tus nqi | Qi dua | Siab dua |
| Zoo tshaj plaws rau | Kev Ntsuas Hla Hla / Ua tsis tiav | Hauv kev ntsuas kev ntsuas qhov tob |
Tag
Xaiv ibVlf Hipot TesterYog tias koj tsuas xav tau aPAS / TSIS TAS NRHO TOM QABThaum lub sij hawm commissioning lossis tom qab kho .
Xaiv ibKev Tshaj Tawm VLF Cable TesterYog tias koj xav tauKev Kho Mob Raws Li Kev Kho Mob, Kev Tso Tawm Ib nrab, lossisTan Delta Testingrau kev tiv thaiv kev kuaj mob thiab cov cuab tam tswj .