LSZH Twin Datalink Cable A-2Y2Y(L)H

What is LSZH Twin Datalink Cable [A-2Y2Y(L)H]?

The LSZH Twin Datalink Cable [A-2Y2Y(L)H] is a low-voltage, single-pair railway signaling and data transmission cable rated at 0.65/1.1kV, constructed with Class 1 solid copper conductors, PE insulation, polyester wrapping tape, an extruded PE inner sheath, an AL-PET electrostatic screening tape, and an LSZH outer protective jacket conforming to British rail standard BR 1932. It is specifically designed to provide reliable signal interconnectivity for Solid State Interlocking (SSI) architectures deployed across rail networks.

Because critical railway interlocking communications must function reliably in the presence of high-voltage traction fields, the cable integrates an impermeable polyethylene inner jacket combined with an AL-PET foil screen to suppress inductive noise and electrostatic interference. In enclosed areas such as subway tunnels and railway stations, its low-smoke zero-halogen outer protective layer ensures that no hazardous halogen acid gases or thick smoke are released during fire incidents, preserving life safety and protecting electronic assets from corrosive degradation.

LSZH Twin Datalink [A-2Y2Y(L)H] Cable Construction

• Conductor: Class 1 solid plain copper conductor delivering stable electrical loop resistance and durable terminal terminations.
• Insulation: Polyethylene (PE) compound delivering high dielectric strength and an insulation resistance of 40 Gohm/km.
• Wrapping: Polyester synthetic binder tape wrapped around the core pair to ensure mechanical stability.
• Inner Sheath: Extruded Polyethylene (PE) compound with a nominal radial thickness of 0.6mm functioning as an effective barrier against moisture penetration.
• Screen: AL-PET (Aluminium-Polyethylene) tape shield providing continuous electrostatic attenuation against external electromagnetic fields.
• Outer Sheath: Low Smoke Zero Halogen (LSZH) compound extruded to a 2.5mm radial thickness for mechanical defense and fire performance.
• Core Identification: 1 Pair: Red and Blue conductors.
• Sheath Colour: Black or Blue.

Applications

LSZH Twin Datalink Cables [A-2Y2Y(L)H] are designed for railway infrastructure signaling networks, serving as primary data transmission paths linking control centers, Solid State Interlocking (SSI) logic processors, and trackside functional modules. Their zero-halogen construction makes them well suited for enclosed transit environments.

• Solid State Interlocking (SSI) Systems: High-reliability data communication between interlocking computers and trackside execution modules.
• Rail & Transit Tunnels: Routing along tunnel raceways, cable hangers, and conduits where non-toxic fire safety is required.
• Enclosed Passenger Stations: Underground concourses, platforms, and equipment rooms demanding low smoke emissions.
• Trackside Concrete Troughs: Protected outdoor ground trenches and trunking installations exposed to high humidity.

Specifications & Dimensions

The LSZH Twin Datalink Cable [A-2Y2Y(L)H] is manufactured as a 1-pair configuration with Class 1 solid copper conductors, a nominal insulated core diameter of 2.6mm, an inner PE sheath thickness of 0.6mm, and an outer LSZH sheath thickness of 2.5mm, resulting in a nominal overall diameter of 12.5mm and a nominal weight of 190 kg/km. Designed for an operating voltage of 0.65/1.1kV, the cable features a maximum conductor DC resistance of 14 ohms/km at 20°C, an insulation resistance of 40 Gohm/km, and stable mutual capacitance measured at 10kHz, in complete compliance with BR 1932 manufacturing specifications.

Standards

Design Standard: BR 1932
Fire Safety Performance: Low Smoke Zero Halogen (LSZH) characteristics
Voltage Rating (Uo/U): 0.65/1.1kV
Electrical Values: Conductor Resistance: 14 ohms/km at 20°C; Insulation Resistance: 40 Gohm/km
Conductor Class: Class 1 solid copper
Regulatory Directives: RoHS Directive 2015/65/EU, REACH Directive EC 1907/2006

Frequently Asked Questions

Q: What is the main function of the [A-2Y2Y(L)H] cable in rail infrastructure?
A: It is designed specifically as the interconnecting transmission cable for Solid State Interlocking (SSI) systems, providing reliable data communication between control centers and trackside interlocking devices in stations and tunnels.

Q: Why does the cable design feature both an inner PE sheath and an outer LSZH sheath?
A: The inner PE jacket acts as a robust moisture barrier that maintains low dielectric loss around the insulated conductors, while the outer LSZH sheath provides mechanical durability and zero-halogen fire safety.

Q: What is the operational purpose of the AL-PET screen?
A: The AL-PET foil creates an electrostatic screening barrier that deflects inductive noise and high-frequency interference generated by passing trains and traction power lines.

Q: What payment terms does Huadong Cable accept for international export orders?
A: We accept standard international commercial payment 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.

Twin Datalink Cable – Why Choose Huadong?

Huadong Cable Group manufactures LSZH Twin Datalink Cable [A-2Y2Y(L)H] in strict compliance with the BR 1932 rail signaling standard. Using high-conductivity Class 1 solid plain copper conductors, our extrusion lines apply uniform PE insulation to ensure an insulation resistance of 40 Gohm/km and a consistent 14 ohms/km conductor resistance. Layered with an extruded PE moisture barrier, an AL-PET screening tape, and an external 2.5mm LSZH jacket, our cables provide dependable data integrity and flame safety in tunnels and enclosed stations.

With more than 20 years of dedicated cable manufacturing experience, Huadong Cable Group operates modern extrusion lines, precision taping equipment, and test laboratories certified to ISO 9001, RoHS, and REACH protocols. By supplying direct from our manufacturing plant, we provide competitive factory pricing, 100% Mill Test Certificates (MTC), customized drum lengths on ISPM 15 heat-treated export wooden reels, and seamless global logistics for rail authorities, contractors, and signaling integrators worldwide.