Raws li peb txhua tus paub tias xob laim yog qhov tso tawm ntawm cov hluav taws xob atmospheric uas tshwm sim los ntawm kev tsim cov nqi sib txawv hauv huab.Qhov tshwm sim yog tam sim ntawd tso tawm ntawm lub zog uas ua rau ib tug txawv ci ntsa iab flare, ua raws li los ntawm ib tug thunderclap.
Piv txwv li, nws yuav tsis tsuas cuam tshuam rau tag nrho DWDM fiber ntau raws hauv luv luv tawg, tab sis kuj cuam tshuam rau kev sib kis cov lus qhia ib txhij raws li kev tshawb fawb ntau.Nws tseem yuav ua rau hluav taws kub thaum muaj hluav taws xob tawm hluav taws xob siab.Txawm hais tias cov teeb liab hauv fiber ntau yog cov teeb liab kho qhov muag, feem ntau ntawm cov kab hluav taws xob sab nraum zoov siv cov cores reinforced los yog armored optical cables yooj yim rau kev puas tsuaj nyob rau hauv xob laim vim yog cov hlau tiv thaiv txheej hauv lub cable.Yog li ntawd, nws yog ib qho tseem ceeb los tsim kom muaj kev tiv thaiv xob laim los tiv thaiv cov kab hluav taws xob kho qhov muag.
Ntsuas 1:
Kev tiv thaiv xob laim rau cov kab hluav taws xob ncaj nraim: ① Hauv chaw ua haujlwm hauv av, cov hlau hauv cov khoom siv kho qhov muag yuav tsum tau txuas nrog ntawm cov pob qij txha, kom cov tub ntxhais muaj zog, cov txheej txheem dej noo thiab cov cuab yeej ntawm cov khoom siv kho qhov muag. cable tau khaws cia rau hauv lub xeev kev sib txuas.② Raws li cov kev cai ntawm YDJ14-91, cov txheej txheem ya raws, txheej armor thiab reinforcing core ntawm optical cable sib koom yuav tsum tau hluav taws xob txiav, thiab lawv tsis yog av, thiab lawv yog insulated los ntawm hauv av, uas yuav zam tau cov tsub zuj zuj ntawm induced xob laim tam sim no nyob rau hauv optical cable.Nws tuaj yeem zam tau tias xob laim tam sim no nyob rau hauv lub ntiaj teb yog nkag mus rau hauv cov khoom siv kho qhov muag los ntawm cov khoom siv hauv av vim qhov sib txawv ntawm impedance ntawm cov hluav taws xob tiv thaiv cov xaim hluav taws xob thiab cov khoom siv hlau ntawm cov khoom siv kho qhov muag rau hauv av.
| Av Texture | Kev Tiv Thaiv Kev Tiv Thaiv Hluav Taws Xob Rau Cov Ncej General | Cov Kev Xav Tau Rau Cov Ncej Teeb ntawm Kev Sib Txuas Ntawm Cov Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob | ||
|---|---|---|---|---|
| tsis kam (Ω) | extension (m) | tsis kam (Ω) | extension (m) | |
| Boggy Av | 80 | 1.0 | 25 | 2 |
| Cov av dub | 80 | 1.0 | 25 | 3 |
| Av nplaum | 100 | 1.5 | 25 | 4 |
| Gravel Av | 150 | 2 | 25 | 5 |
| Sandy Av | 200 | 5 | 25 | 9 |
Ntsuas 2:
Rau cov khoom siv hluav taws xob siv hluav taws xob: cov xov tooj hluav taws xob siv hluav taws xob yuav tsum tau txuas nrog hluav taws xob thiab hauv av txhua 2 km.Thaum grounding, nws tuaj yeem ncaj qha hauv av los yog hauv av los ntawm ib qho khoom siv tiv thaiv surge.Nyob rau hauv no txoj kev, lub ncua kev kawm ntawv hlau muaj kev tiv thaiv ntawm lub overhead av hlau.
| Av Texture | Hom Av | Gravel Av | Av nplaum | Chisley Av |
|---|---|---|---|---|
| Hluav taws xob tiv taus (Ω.m) | ≤100 | 101-300 Nws | 301-500 Nws | > 500 |
| Resistance ntawm Suspension Wires | ≤ 20 | ≤ 30 | ≤35 | ≤ 45 |
| Kev Tiv Thaiv Kev Tiv Thaiv Hluav Taws Xob | ≤80 | ≤100 | ≤150 | ≤200 |
Ntsuas 3:
Tom qab luboptical kabnkag mus rau hauv lub thawv davhlau ya nyob twg, lub thawv davhlau ya nyob twg yuav tsum tau grounded.Tom qab cov hluav taws xob tam sim no nkag mus rau hauv cov hlau txheej ntawm cov khoom siv kho qhov muag, lub hauv paus ntawm lub thawv davhlau ya nyob twg tuaj yeem tso tawm cov hluav taws xob tam sim no sai thiab ua lub luag haujlwm tiv thaiv.Cov kab hluav taws xob faus ncaj qha muaj cov txheej txheem armor thiab cov tub ntxhais muaj zog, thiab lub plhaub sab nraud yog PE (polyethylene) sheath, uas tuaj yeem tiv thaiv corrosion thiab nas tom.
