Low Smoke Cable 1Cx240mm² IEC 60502 – Airport & Critical Infrastructure Power

When a fire breaks out in an airport terminal or a congested underground tunnel, dense toxic smoke kills long before flames do. Evacuation routes dissolve into zero-visibility mazes. Sensitive control electronics corrode from acidic fumes days after the incident concludes. These are the exact failure points our Low Smoke Cable 1Cx240mm² is designed to eliminate. Engineered to the physical and electrical requirements of IEC 60502 and manufactured under a strictly audited quality system, this single-core power cable shifts the risk calculus on your BOM. It reduces life-safety liability while delivering the massive current-carrying capacity that airport operations, back-up power buses, and heavy traction power processing demand.

Low Smoke Zero Halogen Jacket – Safety That Doesn’t Compromise Installation Budget
The outermost layer uses a thermoplastic LSZH (Low Smoke Zero Halogen) compound, not standard PVC.
This eliminates the release of dense black smoke and corrosive hydrogen chloride gas during combustion.
Your project gets full compliance with IEC 61034 smoke density limits and IEC 60754-2 corrosivity standards. More importantly, during a smoke-event, exit signs remain visible for at least 60 minutes—often the threshold local fire codes demand. You avoid the cost of retrofitting dedicated smoke extraction fans just to compensate for inferior cable materials.

Annealed Plain Copper Conductor – Class 2 Stranded, 240mm²
We specified plain annealed copper with Class 2 stranding for a reason.
The 240mm² cross-section combines low resistive loss with mechanical flexibility suitable for pulling through cable trays and below-ground duct banks. A solid conductor at this gauge would be unworkable.
The advantage translates directly into lower heat build-up inside densely packed terminal risers. Your field engineers spend fewer hours wrestling with bending radius compliance, and the electrical team records a lower voltage drop across long runway lighting circuits—reducing the need for oversized upstream transformers.

Dielectric Strength Built to IEC 60502-1
The insulation system uses cross-linked polyethylene (XLPE) with a 90°C continuous operating temperature rating.
Compared to PVC-insulated equivalents, XLPE permits higher ampacity for the same conductor size under steady-state conditions.
This derisking matters when you are revising an emergency generator circuit. You can push more apparent power—measured in kVA—through a cable tray that’s already at capacity, delaying or entirely avoiding an expensive infrastructure expansion.

Robust Mechanical Integrity for Pulling and Commissioning
An extruded bedding layer and a tightly applied LSZH oversheath resist the kind of scuffing common when cable is hauled through conduits at Portacabin-based temporary site offices.
The jacket is UV-stabilized and resistant to mineral oils occasionally found in hangar maintenance bays.
Phase testing and sheath integrity tests pass on the first attempt. This predictability cuts mean commissioning time per feeder.

Technical Specifications & Dimensions
The table below lists the nominal design parameters for the standard 0.6/1 kV grade. All values conform to the testing categories within IEC 60502-1. Custom voltage grades up to 1.8/3 kV are available on request. Slight dimensional variation occurs based on ambient temperature and sheath color masterbatch, and final drawings will be issued with the order acknowledgment.

Industry Applications & Scenario Validation
– Airport Terminal LV Distribution: Feeds from secondary unit substations to gate lounges and baggage handling conveyors. The LSZH jacket ensures that lighting control cabinets remain free from chloride contamination in a fire event, avoiding a complete switchgear replacement claim.
– Airfield Ground Lighting (AGL): Primary distribution feeders for elevated runway edge and threshold lights. The 240mm² copper conductor minimizes ground leakage current blinks that often falsely trigger series circuit isolation transformers.
– Underground Metro & Rail Power Feeder: Pulled parallel along tunnel walls in traction power substations. Negligible smoke emission in the confined bore maintains pump station visibility long enough for exhaust fans to purge the space.
– Hospital Life-Safety Branches: Supplies bypass isolation transformers in operating theaters. Zero halogen evolution prevents micro-pitting on exposed stainless steel medical device contacts down the cleanroom corridor.
– Cogen & Data Center Campus Ring: Links modular diesel generators to paralleling switchgear outdoors. The UV-stabilized sheath resists cracking through winter freeze-thaw cycles without a separate conduit sleeve, saving on civil works.

International Compliance & QA Standards
Production lots undergo batch testing against the following norms. We include in-process test reports and a final factory acceptance test dossier with every shipment.

✅ IEC 60502-1 – Cables with extruded insulation for rated voltages from 1 kV up to 30 kV
✅ IEC 60332-1-2 – Test for vertical flame propagation for a single insulated wire or cable
✅ IEC 61034-2 – Measurement of smoke density of cables burning under defined conditions
✅ IEC 60754-1/2 – Test on gases evolved during combustion of materials from cables (Halogel content & acidity)
✅ CE Marking compliant with the Low Voltage Directive 2014/35/EU
✅ Restriction of Hazardous Substances (RoHS) 2.0 compliant
✅ Manufactured in an ISO 9001:2015 audited production facility
✅ Material traceability available through in-house logistics for all supplied lengths

FAQ
We need an IEC 61034 smoke transmittance above 80% for this data center package. Can you ship with a certified batch test report?
Yes. Our LSZH compound regularly achieves transmittance values between 85% and 92% in an 8-pc bundle sample per the IEC 61034-2 methodology. We ship a 3.1 type material certificate and a consolidated batch test report with the bill of lading. Transmittance numbers are stamped on the cable legend at one-metre intervals for field verification.

Our site is in a coastal airport with high moisture and salt spray. Does the XLPE insulation degrade in these conditions?
No. The XLPE insulation is inherently hydrophobic and is not subject to hydrolysis. Combined with the extruded LSZH outer sheath, the cable does not wick moisture radially. For submersible sections or manholes that regularly flood, we can up-spec the bedding to include a longitudinal aluminum moisture barrier with a bonded PE layer under the LSZH outer jacket.

What is the standard delivery packaging, and what ramp-up lead time applies for a 15-kilometer order?
Standard packaging for 240mm² single-core is a treated wooden reel rated for a gross weight of 7.5 tonnes. Reel dimensions are 2.4m diameter x 1.2m width. For a repeat standard 0.6/1kV design, the current ex-works lead time is 4 weeks for the full 15 km. First delivery slot can be secured with a 30% advance payment against proforma invoice.

Call to Action
To compare harmonic current ratings or confirm your feeder voltage drop over the exact site route length, request complete X, R, and capacitance per-unit-length values from our application engineering desk. Send your single-line diagram and installation conditions through the contact form below for a formal datasheet pack and a project-bound quotation within one working day.