- CABLE CONSTRUCTION
- Conductor: The conductors shall be solid , annealed and bare copper with a diameter of AWG24 and minimum acceptable diameter shall be 0.485mm.
Insulation: Each conductor shall be insulated with solid high density polyethylene. The insulation shall be uniform and shall not have any defects. The diameter over the insulation shall be maximum 1.22mm.
Screen: The aluminum tape coated on one side with plastic film shall be applied over the cable core for screening on jacketing process. A tinned copper wire with the diameter of 0.4mm shall be applied with cable core in jacket.
Inner Sheath: The flame retardant PVC compound colored grey shall be applied over the cable core. The sheath shall be uniform and shall not have any defects.
Outer Sheath: The black colored PVC sheath for outdoor purpose (UV) shall be applied over the inner sheath. The sheath shall be uniform and shall not have any defects.
- ELECTRICAL PERFORMANCE
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Characteristics Units Specification DC Resistance Ω/100m ≤ 9.5 DC Resistance Unbalance % ≤ 2.00 Capacitance Unbalance
(Pair to Ground)pF/km
(800~1000Hz)≤ 1600 Insulation Resistance MΩ-100m ≥ 5000 Dielectric Strength DC kV/sec 2.5 / 2 Impedance (Characteristic mean)
Ω 100 ± 5% (at 100MHz) Return Loss dB/100m ≥ 20 + 5 * log(freq) , 4 ≤ f < 10MHz
≥ 25 , 10 ≤ f < 20MHz
≥ 25 – 7 * log(freq/20) , 20 ≤ f ≤ 250MHzAttenuation
(Insertion Loss)dB/100m ≤ 1.82*√(freq) + 0.0169*(freq) + 0.25/√(freq)
, 4 ~ 250 MHzNEXT Loss dB/100m ≥ 75.3 – 15*log(freq) , 4 ~ 250MHz Power sum NEXT Loss dB/100m ≥ 72.3 – 15*log(freq) , 4 ~ 250MHz ELFEXT Loss dB/100m ≥ 68 – 20*log(freq) , 4 ~ 250MHz Power sum ELFEXT Loss dB/100m ≥ 65 – 20*log(freq) , 4 ~ 250MHz Propagation Delay dB/100m ≤ 534 + 36 / √(Freq) , 4 ~ 250MHz Propagation Delay Skew dB/100m ≤ 45, 4~250MHz
- FLAME REQUIREMENTS
- The PVC/PVC product comply with CPR reaction to fire : Eca