Caledonian RS 485 Cables Specification
RS485 Steel Wire Braid LSZH Double Jacket Composite Cable
APPLICATIONS
With low capacitance and high propagation speed properties, and its high immunity against external interference, this cable is suitable for extended distance transmission and applications where low signal distortion is required.
STANDARDS
EIA/TIA 485
CABLE CONSTRUCTION
75Ohm RG59 Coaxial Cable
Conductor: 0.81mm Copper Covered Steel
Insulation: Polyethylene. Diameter 3.65mm.
Shield: Bonded Al screen and braid of Al-Mg wire. Coverage: 80%
Sheath: Black LSZH sheath. Nominal outer diameter is 6.1mm.
24AWG RS485
Conductor: 2 pairs 24AWG (7/0.2mm) Stranded tinned copper to IEC228 Class 2
Insulation: PE material. Thickness 0.6mm.
Shield: Aluminium polyester tape with 24 AWG stranded tinned copper drain wire
Braiding: Tinned copper wire braiding.
Sheath: Black LSZH sheath. Nominal outer diameter is 9.0mm.
2.5mm2 Power Cable
Conductor: 3C 2.5mm2 Stranded tinned copper wire to IEC228 Class 2.
Insulation: XLPE. Thickness 0.7mm.
Sheath: Black LSZH sheath. Nominal outer diameter is 12.0mm
4.18AWG Audio Cable
Conductor: 1 pair 18AWG (16/0.254mm) Stranded tinned copper
Insulation: PE material.
Shield: Aluminium polyester tape with 24 AWG stranded tinned copper drain wire
Sheath: Black LSZH sheath. Nominal outer diameter is 6.5mm.
Element Assembly
Filler:PP, PVC or PE
Wrapping Tape: Polyester tape
Inner Sheath: Black LSZH, thickness 0.8-1.0mm
Overall Shield: Stainless steel wire braid, coverage 95%
Outer Sheath: Black LSZH, thickness 1.6- 1.8mm, nominal outer diameter is 24±2mm, approx. weight: 730kg/km
ElECTRICAL PROPERTIES
1. Coaxial Cable
Impedance: 75±3Ohm (@1MHz)
Nominal Attenuation: 6.72dB/100m @50MHz
2. RS485
Nominal Impedance: 120±10Ω
Nominal Conductor DC Resistance @20℃: 78.7 Ohm/km
Nominal Attenuation: 1MHz 2.3dB/100m
3. Power Cable
Electrical Resistance: 7.41Ohm/km
Insulation Resistance: ≥5500 MOhm x km
4. Audio Cable
Electrical Resistance: 18.1Ohm/km
PHYSICAL AND THERMAL PROPERTIES
Min Bending Radius: 360mm
Operating Temperature: -35℃/+90℃