Xa EmailConcentric cable yog siv los ua hluav taws xobkev pabcuam nkaglos ntawm cov hluav taws xob faib hluav taws xob mus txog rau lub 'meter' vaj huam sib luag (tshwj xeeb yog qhov yuav tsum tau tiv thaiv "dub" poob lossis hluav taws xob hluav taws xob), thiab raws li cov khoom siv hluav taws xob los ntawm cov ntsuas vaj huam sib luag mus txog rau lub vaj huam sib luag lossis vaj huam sib luag, ib yam li nws tau teev tseg hauv National Electrical Code.Hom neeg xyuas no tuaj yeem siv rau hauv qhov chaw qhuav thiab ntub dej, ncaj qha faus lossis sab nraum zoov.Nws qhov kub siab tshaj plaws ntawm kev ua haujlwm yog 90 ºC thiab nws qhov kev pabcuam hluav taws xob rau txhua daim ntawv thov yog 600V.
Cov txiaj ntsig:
Tshwj xeeb tshaj yog tsim rau kev sib txuas ib-theem los ntawm pre-assembled overhead kab uas tsis muaj hluav taws xob, txo qhov kev pheej hmoo ntawm tub sab ntawm lub zog.Kev txhim kho yuav tsum muaj kev ua haujlwm ntawm kev tiv thaiv huab cua uas tau qhib rau hauv qhov kev tshwm sim luv luv vim qhov kev sib txuas ntawm kev sim tsis txaus ntseeg, cuam tshuam kev pub mis thiab nthuav tawm qhov sim tub sab.
Txheem:
UL 854 --- UL Txuj rau Kev Pabcuam Kev Nyab Xeeb-Kev Nkag Nkag Cables
UL44 --- UL Standard for Safety Thermoset-Insulated Wires thiab Cables
Kev tsim kho:
Tus neeg xyuas pib: Chav 2aluminium conductor or aluminium alloy conductor
Rwb thaiv tsev: XLPE rwb thaiv tsev
Cable sab hauv sheath: PVC
Concentric txheej: aluminium lossis aluminium alloy
Cable wrapping daim kab xev: Cov khoom tsis nqus dej
Cable sheath: PVC (XLPE / PE) sheath
Daim ntawv qhia
| Core thiab Nominal Cross Section | Tus coj | Rwb thaiv tsev Thickness | Concentric tus neeg xyuas pib | Thickness ntawm Cable Shield | Cable Diameter | Cable hnyav | Max.DC Resistance ntawm tus neeg xyuas pib (20 ℃) | |||
| Wire Gauge / AWG | Tus lej | Txoj kab uas hla mm | mm | Tus lej | Txoj kab uas hla mm | mm | mm | kg/km | Ω/km (Phase) | Ω/km (Concentric) |
| Aluminium Alloy Conductor | ||||||||||
| 2 X#12 | 7 | 0.78 ib | 1.14 | 39 | 0.321 ib | 1.14 | 7.74 ib | 67 | 8.88 ib | 8.90 ib |
| 2 X#10 | 7 | 0.98 ib | 1.14 | 25 | 0.511 ib | 1.14 | 8.72 ib | 85 | 5.59 ib | 5.60 ib |
| 2 x nr8 | 7 | 1.23 | 1.14 | 25 | 0.643 ib | 1.14 | 9.74 ib | 110 | 3.52 ib | 3.60 ib |
| 2 X#6 | 7 | 1.55 ib | 1.14 | 25 | 0.813 ib | 1.14 | 11.04 Nws | 148 | 2.21 | 2.30 Nws |
| 2 X#4 | 7 | 1.96 ib | 1.14 | 26 | 1.020 Nws | 1.14 | 12.68 Nws | 206 | 1.39 ib | 1.40 Nws |
| 3 x:8 | 7 | 1.23 | 1.14 | 65 | 0.405 ib | 1.14 | 11.3 X 17.3 | 262 | 3.52 ib | 3.60 ib |
| 3 x:6 | 7 | 1.55 ib | 1.14 | 65 | 0.511 ib | 1.52 ib | 13.2 X 20.2 | 370 | 2.21 | 2.30 Nws |
| 3 X nr 4 | 7 | 1.96 ib | 1.14 | 65 | 0.643 ib | 1.52 ib | 14.7 X 22.9 | 488 ib | 1.39 ib | 1.40 Nws |
| 3 X#2 | 7 | 2.47 ib | 1.14 | 65 | 0.823 ib | 1.52 ib | 16.6 X 26.3 | 640 | 0.88 ib | 0.89 ib |
