9842-SWA LSZH 300V Alternative Cable

What is 9842-SWA LSZH 300V Alternative Cable?

The 9842-SWA LSZH 300V Alternative Cable is an armoured, double-screened low-capacitance multi-pair data transmission cable featuring Class 2 stranded tinned copper conductors, PE insulation, an Al/PET foil with a drain wire, a tinned copper wire braid (TCWB) screen, a PE inner bedding sheath, steel wire armour (SWA), and a grey LSZH outer jacket complying with EN 50575 CPR fire safety standards. It is designed for noise-immune, high-speed signal and data transmission up to 300V in industrial RS485 serial fieldbus networks requiring robust mechanical defense and direct burial capability.

Engineered to ensure uncorrupted signal integrity under harsh physical and electromagnetic operating conditions, the cable combines low-loss polyethylene core insulation with dual-layer Al/PET foil and braided tinned copper shielding to isolate delicate differential signals from high-power machinery noise. Beneath its flame-retardant, halogen-free outer jacket, helical galvanised steel wire armour provides high radial crush resistance and tensile strength against heavy backfill pressures and mechanical impact, while emitting zero corrosive acid gases to safeguard personnel and sensitive electronics during fire incidents.

9842-SWA LSZH 300V Alternative Cable Construction

• Conductor: 2 Pairs 24 AWG (7/0.20mm) Class 2 stranded tinned copper conductors offering superior conductivity and corrosion resistance.
• Insulation: Low-dielectric Polyethylene (PE) compound delivering low mutual capacitance and minimal signal attenuation.
• Pair Assembly: 2 twisted pairs laid up to suppress intra-cable crosstalk and ensure balanced differential communication.
• Screen / Shield: Double screening system consisting of an Aluminium/Polyester foil (Al/PET) tape providing 100% electrostatic coverage plus an overall Tinned Copper Wire Braid (TCWB) for maximum magnetic interference immunity.
• Drain Wire: Stranded tinned copper drain wire for rapid, low-resistance ground bonding.
• Bedding / Inner Sheath: Extruded Polyethylene (PE) inner sheath providing a stable mechanical cushion over the screened assembly.
• Armour: Galvanised Steel Wire Armour (SWA) applied helically to provide heavy-duty crush resistance and mechanical impact protection.
• Outer Sheath: Thermoplastic Low Smoke Zero Halogen (LSZH) compound delivering flame-retardant, halogen-free fire safety.
• Core Identification: Pair 1: Blue/White and White/Blue; Pair 2: Orange/White and White/Orange.
• Sheath Colour: Grey.

Applications

The 9842-SWA LSZH 300V Alternative Cable is engineered for mission-critical RS485 communication lines, process telemetry, and digital sensor interconnections where heavy mechanical protection and zero-halogen fire safety are mandatory.

• Petrochemical Plants & Refineries: Direct underground burial in outdoor cable trenches exposed to ground pressures, gravel, and shifting soils.
• Industrial Automation & Manufacturing: Multi-drop RS485 serial communication networks linking distributed PLCs, motor control centres (MCC), and variable speed drive systems.
• Building Management Systems (BMS): Centralized building automation networks, HVAC control telemetry, and fire alarm integration across enclosed commercial complexes.
• Public Infrastructure & Transportation Hubs: Rail tunnels, airport terminals, and data centers requiring LSZH materials to eliminate toxic acid emissions during fire events.

Specifications & Dimensions

The 9842-SWA LSZH alternative cable is produced in a 2-pair 24 AWG (7/0.20mm) geometry with a nominal overall diameter of 13mm and a nominal cable weight of 210 kg/km, engineered to withstand substantial tensile stress and external impact. Operating at a rated voltage of 300V across a fixed temperature spectrum of -40°C to +80°C, it features a maximum conductor DC resistance of 86.2 Ω/km at 20°C, with all dimensional tolerances, steel wire armouring tensile standards, and electrical performance benchmarks strictly aligned with applicable international instrumentation and harmonized European norms.

Standards

Voltage Rating: 300V
Temperature Spectrum: Fixed installation: -40°C to +80°C
Conductor Standard: Class 2 stranded tinned copper per IEC/EN 60228 / ASTM specifications
Fire Safety & CPR: European Construction Products Regulation EN 50575 (CPR Compliant)
Regulatory Directives: CE Marked, Low Voltage Directive 2014/35/EU, RoHS Directive 2015/65/EU, REACH Directive EC 1907/2006

Frequently Asked Questions

Q: What is the key advantage of Steel Wire Armour (SWA) on the 9842 alternative cable?
A: Steel Wire Armour (SWA) provides high tensile strength and superior radial crush resistance, allowing the cable to be directly buried in underground plant trenches and installed in exposed outdoor raceways without requiring auxiliary protective conduits.

Q: Why does the cable utilize both an Al/PET foil screen and a TCWB braided shield?
A: The Al/PET foil provides 100% physical coverage against high-frequency electrostatic interference, while the tinned copper wire braid offers low-frequency magnetic noise suppression and enhanced mechanical durability.

Q: What life-safety benefits does the LSZH outer sheath provide compared to standard PVC?
A: The LSZH outer sheath emits minimal non-toxic smoke and zero corrosive halogen acid gases during combustion, preserving emergency escape visibility and preventing secondary acid damage to sensitive control room electronics.

Q: What commercial payment terms does Huadong Cable Group offer for export contracts?
A: We provide standard international commercial terms, including Telegraphic Transfer (T/T, with 30% advance deposit and 70% against shipping documents) and 100% Irrevocable Letter of Credit (L/C) at sight for engineering procurement contractors and overseas distributors.

9842-SWA LSZH 300V – Why Choose Huadong Cable?

Huadong Cable Group manufactures 9842-SWA LSZH 300V alternative cables in strict compliance with international instrumentation and RS485 communication protocols, verified through comprehensive laboratory testing for impedance consistency, attenuation limits, and halogen-free compliance. Utilizing high-conductivity Class 2 stranded tinned copper conductors drawn from 99.99% high-purity electrolytic copper, our precision extrusion lines apply low-dielectric polyethylene insulation and dual Al/PET plus TCWB shielding to maintain uncorrupted signal integrity. Reinforced with an extruded PE bedding, heavy galvanised steel wire armour, and an advanced flame-retardant LSZH outer jacket, our cables deliver outstanding mechanical durability and thermal stability from -40°C to +80°C in the most challenging industrial environments.

With more than 20 years of precision cable engineering expertise, Huadong Cable Group operates fully automated multi-pair stranding, planetary steel wire armouring, and specialized zero-halogen compounding facilities certified to ISO 9001, CE, CPR (EN 50575), RoHS, and REACH protocols. By eliminating intermediaries, we deliver competitive factory-direct pricing, 100% Mill Test Certificates (MTC) tested in accredited testing facilities, tailored continuous drum lengths on ISPM 15 heat-treated export wooden reels, and dependable door-to-port global logistics for EPC contractors and industrial instrumentation builders worldwide.