VLF Cable Testing: Qhov kawg qhia kom tiv thaiv Underground tsis
VLF Cable Ntsuam Xyuas Yog Dab Tsi?
VLF (tsawg zaus) Kev sim ua CABLE siv rau ntawm 0.1 hz lossis qis dua los ntsuas lub rwb thaiv tsev / siab voltage fais fab cable. Tsis zoo li 50 / 60HZ kev ntsuam xyuas, VLF tus nqi qeeb qeeb thaum siv hluav taws xob tsis muaj zog xws li cov ntoo dej, cov khoom tsis huv, lossis kev laus puas. Nws yog kev lag luam txheem rau kev kuaj mob kuaj xyuas thiab commissioning ntawm clesles li 35kv +.
Vim li cas siv 0.1hz es tsis txhob muaj lub zog zaus?
Science {- Tsav lub zog tau txais txiaj ntsig:
Ntawm ultra - qhov tsawg zaus, rwb thaiv tsev puas coj txawv:
Dej ntoo (tus # 1 ua rau ntawm XLPE Cable tsis ua hauj lwm) loj hlob sai dua hauv qis- zaus kev ntxhov siab
Ib nrab tawm haujlwm ua haujlwm tau yooj yim dua los xyuas
Cov khoom kuaj yog 80% me dua li yav dhau los 60Hz cov tub rog
Piv Txwv Piv Txwv:Tus nqi hluav taws xob zam tau $ 150 kv cable hloov tom qab VLF kuaj pinpointed ib cheeb tsam ua txhaum hauv ib 15kV submarine cable.
3 Cov ntawv thov tseem ceeb uas VLF cov kev txawj ntse
Txais Kev Ntsuam Xyuas
Qhia txog kev txhim kho kev sib xyaw tshiab CABLE COUNTER Wallations walling voltage ua ntej ua kom muaj zog.
Kev tiv thaiv kev saib xyuas
Txheeb xyuas cov laus hauv cov raj hauv av ua ntej kev puas tsuaj.
Txhaum Qhov Chaw
Ua ke nrog TDR (lub sijhawm sau txog kev xav txog kev txawv txav ntawm sprice qhov tsis xws luag nyob rau hauv ± 1 meter.
Xaiv Koj Tus Vlf Tester: 4 Kev Txiav Txim Siab
Muaj ntau ntau
Phim tus tester's Max KV rau koj cov cable ua haujlwm voltage (piv txwv li, 35kv testers rau 15kv {{}} rated cables).
WaveTorm Hom
Sinusoidal thiab cosine {- duab sib dhos: cuam tshuam cov rhiab rau vsoids vs. dej los nrhiav.
Xav Tau Feem Ntau Xav Tau
Manhole vs. Hloov kev sim: Cov Chav Ua Kom Zoo (<20kg) for field crews.
Kev Kho Mob Sib Koom Tes
Chav nyob nrog tan Δ (poob kaum sab xis) ntsuas kwv yees lub neej nyob ntxiv.
Top 3 Ntiaj Teb VLF Tester manufacturers piv
| Yam zoo | Tier 1 Hom | Tier 2 Hom | Cov Kev Xaiv Nyiaj Siv |
|---|---|---|---|
| Peak Voltage | Mus txog 50kv | Txog 35KV | Tsawg dua los yog sib npaug rau 25kv |
| Advanced Analytics | Tan Δ mapping | Nrhiav tau pd yooj yim | Dhau / poob nkaus xwb |
| Yam ruaj khov | Ruggedized ip54 | Teb - qib | Lub teeb - duty |
Tiag -} Lub Ntiaj Teb Kev Npaj:Qeb 1 cov neeg kuaj xyuas cov neeg soj xyuas lub sijhawm rau tus neeg teb xov tooj European los ntawm 70% nrog kev soj ntsuam kab mob kom tsis txhob muaj kev phiv.
Thaum VLF tsis txaus: kev ntsuam xyuas tau yooj yim
Khub nrog cov no kom ua kom tiav kev ntseeg siab:
Kev Tawm Tsam Ib Feem (PD)Nrhiav cov khoom plig microscopic rwb thaiv tsev
IR ThermographyPom overheathated terminations
DC HIPOT TWHING(Rau ntawv -} Insulated legacy cable tsuas)
PRO Kev Nyab Xeeb Kev Nyab Xeeb:Nco ntsoov txoj kev tawm mus rau 4x tas mus li ntawm kev sim ua tom qab VLF HIPOT cov ntawv xeem - tseem tshuav lub zog ua rau muaj kev phom sij.
