1. Tib-Core Cable Sheath End Grounding Method, Yog vim li cas yuav tsum tau muab ntsia raws lub Cable nteg nyob rau hauv Parallel nrog cov rov qab kab?
Nyob rau hauv cov hlau sheath kawg ntawm grounded cable kab, xyuas kom meej tias qhov induced voltage nyob rau hauv lub sheath tsis tshaj tus qauv tso cai.
Yuav tsum tau muab ntsia rau ntawm kab kab sib txuas ua ke ntawm tus neeg xyuas pib, thiab ob qhov kawg ntawm tus neeg xyuas pib grounded, tus neeg xyuas pib no hu ua kab rov qab.
Thaum ib theem av txhaum tshwm sim, lub grounding luv luv-circuits tam sim no tuaj yeem ntws rov qab mus rau qhov nruab nrab ntawm qhov system los ntawm txoj kab rov qab.
Raws li cov av tam sim no los ntawm cov kab rov qab los ntawm cov hlau nplaum sib nqus offset ib feem ntawm cov hlau nplaum sib nqus tsim los ntawm cable conductor grounding tam sim no, yog li txo qhov induced voltage ntawm sheath thaum lub short-circuit txhaum.
2. Kev ua haujlwm Cable tuaj yeem muab faib ua ntau yam haujlwm?
(1) Kev thauj mus los ntawm qhov chaw: suav nrog kev thauj khoom thiab tshem tawm cov khoom siv engineering los ntawm lub tsev rau khoom mus rau qhov chaw tsim kho, kev mus, thiab npliag backhaul.
(2) Cov hauj lwm hauv zos: suav nrog kev excavation, kev tsim kho tunnel thiab trench, tus lwm yam.
(3)Tso tej hauj lwm: suav nrog tso, nruab nrab lub taub hau ua, nqa lub hau, cev fas, tsev kawm ntawv dej nyab, traction taub hau ua, tus lwm yam.
(4) Ob qhov kawg ntawm qhov project: ev, txuas txuas txuas, thiab nws lub hauv paus tsim thiab installation, terminal taub hau ntau lawm, roj siab, thiab teeb liab ntaus ntawv installation, lub npe hom kev ntsuas hluav taws xob ua haujlwm, tus lwm yam.
(5) Plug engineering: suav nrog kev tsim cov roj-sau cable ntsaws taub hau, lub installation ntawm lub tank muab roj, tsis siv neeg tso dej thiab cov khoom siv teeb liab, tus lwm yam.
(6) grounding engineering: suav nrog cov kab hluav taws xob rwb thaiv tsev, transposition thawv, cov tiv thaiv, grounding lub thawv installation, tus lwm yam.
3. Yuav ua li cas kuaj yuav tsum tau nqa tawm rau kev lees txais ntawm cov kab cable?
(1) Cable specifications yuav tsum yog los ntawm cov kev cai, qhov kev npaj yuav tsum zoo huv si, tsis muaj kev puas tsuaj, thiab ua kom tiav, yog lawm, thiab clear labeling.
(2) Qhov ruaj khov khoov vojvoog ntawm lub cable, qhov kev txhawj xeeb ntawm qhov deb thiab kev xaim ntawm cov hlau sheath ntawm ib leeg-core fais fab cable yuav tsum ua kom tau raws li qhov yuav tsum tau ua.
(3) Kev txiav txim cable, lub taub hau nruab nrab tsis xau roj, ruaj khov, oil-filled cable roj siab thiab meter calibration tus nqi yuav tsum ua tau raws li qhov yuav tsum tau ua.
(4) Zoo hauv av.
(5) Lub cable davhlau ya nyob twg theem xim yog lawm, thiab cov hlau qhov chaw ntawm lub bracket yog pleev xim tsis tu ncua.
(6) cable trench thiab qhov, tus choj yuav tsum tsis muaj khib nyiab, thiab daim npog npog tiav.
4. Dab tsi yog qhov yuav tsum tau muaj ntawm Cable Kab Zoo Sequence Impedance Measurement Process?
Tus AC tsis kam ntawm cable conductor thiab theem sum ntawm peb qhov zoo tib yam inductances ntawm lub cable yog hu ua qhov zoo sib lawv liag impedance.
Qhov zoo ua ntu zus impedance ntawm cov kab cable feem ntau tuaj yeem ntsuas ncaj qha rau ntawm lub tais cable, thiab ib qho hluav taws xob qis feem ntau yog siv rau kev ntsuas.
Yog li ntawd, ib kauj ruam-down transformer yuav tsum tau nqis los ntawm qhov voltage, lub kauj ruam-down transformer siv lub hnub qub thaiv, thiab lub peev xwm feem ntau yog 10kVA lossis ntau dua.
Muaj ntau yam kev cai voltage, Kev ntsuas ntawm AC fais fab mov yuav tsum ruaj khov kom ntseeg tau tias qhov ntsuas tam sim no ua tau raws li qhov yuav tsum tau ua.
Qhov tseeb voltage meter nyeem tus nqi yuav tsum yog qhov voltage ntawm qhov kawg ntawm cable, qhov ntsuas tam sim no zoo nyob ze rau lub sij hawm ntev tso cai cable tam sim no, ntsuas thiab nyeem tus nqi ntawm txhua lub 'meter', kaw qhov tam sim no thaum nyeem tus nqi ntawm peb lub rooj.
5. Raws li Lub “Hluav taws xob ntau lawm kev nyab xeeb”, Cov neeg ua haujlwm hluav taws xob yuav tsum muaj cov xwm txheej ntawm dab tsi?
Yuav tsum muaj cov xwm txheej hauv qab no.
(1) txheeb xyuas los ntawm tus kws kho mob lub cev kev noj qab haus huv, tsis muaj kev kho mob uas tiv thaiv kev ua haujlwm.
(2) muaj kev paub txog hluav taws xob tsim nyog, raws li qhov xwm txheej ntawm lawv txoj haujlwm, thiab ua haujlwm kom paub txog cov kev cai uas cuam tshuam, cov txheej txheem kev tshaj lij, thiab cov txheej txheem kev ua haujlwm kev nyab xeeb, thiab dhau qhov kev xeem.
(3) txawj nyob rau hauv thawj txoj kev pab rau electrocution.
6. Dab tsi yuav tsum tau ceeb toom nyob rau hauv tus txheej txheem ntawm kev thauj mus los thiab unloading ntawm Cables?
(1) hauv kev thauj khoom thauj thiab tshem tawm cov txheej txheem, yuav tsum tsis txhob ua rau lub cable thiab cable tais puas, nws yog nruj me ntsis txwv tsis pub thawb lub cable tais ncaj qha los ntawm lub tsheb, cov cable zoo li yuav tsum tsis txhob thauj khoom ncaj nraim lossis chaw cia.
(2) ua ntej thauj los yog dov lub cable tais, yuav tsum xyuas kom meej tias lub tais cable yog ruaj khov, cable winding nruj, roj-filled cable rau lub tank siab ntawm cov roj yeeb nkab yuav tsum tau kho, yuav tsis puas, lub siab tank yuav tsum yog khoom, qhov ntsuas siab yuav tsum ua tau raws li qhov yuav tsum tau ua.
7. Dab tsi yog Kev Ntsuas Kev Tiv Thaiv Hluav Taws Xob Cable?
(1) Kev siv ntawm hluav taws-retardant cables.
(2)Txais yuav hluav taws xob cable bracket.
(3) Kev siv cov hluav taws kub-resistant coatings.
(4) kab tunnel, mezzanine tawm, tus lwm yam. teem hluav taws faib phab ntsa, hluav taws baffle.
(5) overhead cables yuav tsum zam cov kav dej, thiab tawg-pov thawj qhov rooj, txwv tsis pub yuav tsum tau siv cov kav dej hauv zos lossis kev tiv thaiv hluav taws kub tiv thaiv.
