Caledonian RS 485 Cables Specification
RS485 Cable-Cu/FPE/OS/TCWB/FRPVC
Cu/FPE/OS/TCWB/FRPVC
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
Conductor: Stranded tinned copper wire to BS 6360
Insulation: Foam Polyethylene
Core Identification: White/Brue, White/Oringe
Filler: PP if necessary
Overall Screen 1: Aluminium/ p.e.t.p. Laminated tape (100%).
Drain Wire: 24AWG Tinned copper wire, 7/0.2mm.
Overall Screen 2: Tinned copper wire braid (90%).
Sheath: 80°C FRPVC
Sheath Colour: Black
Packing: The cables are delivered on non-returnable wooden drums.
RoHs compliance Yes
Flame retardance: IEC60332
ElECTRICAL PROPERTIES
| Rated Voltage | 80V |
| Voltage withstand test: | AC 0.5KV/1min |
| Impedance | 120 Ohms +/- 15 Ohms |
| Conductor resistance at 20 ℃ | ≤ 79Ohm/Km |
| Nominal Velocity of Propagation | 66 % |
| Nominal Delay: | 5.25ns/m |
| Nom. Capacitance conductor to conductor | 42.5 pF/ m |
| Nom. Capacitance conductor to other conductor & shield | 76 pF/ m |
| Nominal Attenuation: 1MHz | 1.97dB/100m |
PHYSICAL AND THERMAL PROPERTIES
Operating Temperature: -5℃ to 80℃
Nominal Voltage: 30V
CONSTRUCTION PARAMETERS
| Conductor Size | Number of Pairs | Nominal Thickness of Sheath (mm) | Nominal Overall Diameter (mm) | Nominal Weight (kg/km) |
|---|---|---|---|---|
| 24AWG (7/0.2mm) | 2 | 1.25 | 8.3 | 100 |