Conductor
Material: Multi-stranded tinned copper wire, such as Belden’s 9844NH model, uses 7×32 24Awg twisted tinned copper wire as the conductor.
Insulation
Material: Usually polyethylene (PE) or cross-linked polyethylene (XLPE)
Outer diameter: The outer diameter of the insulation layer of 9844NH is 1.73mm, with a tolerance of ±0.05mm.
Shielding layer
Type: Generally, a double shielding method combining aluminum foil/polyester composite tape shielding and tinned copper braided mesh shielding is used, and the shielding coverage is usually around 90%.
Grounding: An independent TC grounding conductor is often attached to enhance the shielding effect.
Sheath
Material: Mostly low-smoke zero-halogen (LSZH) material or polyvinyl chloride (PVC),
Outer diameter: 9.9mm, 8.9mm, 6.8mm.
Electrical characteristics
DC resistance: There are slight differences in products from different manufacturers, 57.5Ω/km, 94.2Ω/km.
Capacitance: 42pF/m, 75.5pF/m; 46pF/m, 82pF/m.
Characteristic impedance: 120Ω
Maximum current: Generally, the maximum recommended current for a single conductor is 2.1A
Professional Manufacturer 2×0.5mm² 24Awg Bare Copper Pe Pvc Copper Foil Rs485 Twisted Shield Cable catv amplifier
RS485 cables are used in
Industrial automation: networking of production equipment, remote I/O module control
Building automation: HVAC system control, lighting system control, security system integration
Traffic management: traffic light control, electronic police system
Energy management: solar power generation system, smart grid
Medical equipment: networking of medical instruments, ward equipment monitoring
Agricultural automation: environmental monitoring and irrigation control, aquaculture environment monitoring
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