YGZB Cable | Flat Silicone Rubber Cable | Technical Datasheet

Thermal runaway in a cable tray doesn’t announce itself. It builds silently, in the confined spaces between conductors, until insulation vitrifies and a production line stops dead.
The YGZB flat silicone rubber cable is engineered to neutralize this specific risk. Its geometry strips heat away faster than any round-jacketed equivalent, and its silicone body refuses to ignite under conditions that would carbonize PVC in minutes. This translates directly to reduced derating calculations and fewer forced shutdowns in high-density power distribution environments.

Conductor Temperature Range: Why -60°C to +180°C Matters

Feature: Tinned copper conductors encased in a proprietary high-consistency silicone rubber (HCR) compound, rated for continuous service at +180°C and short-circuit excursions to +220°C.
Advantage: No progressive embrittlement at the boundary where copper meets insulation, even under cyclic thermal loading.
What this means for your site: You eliminate a common failure mode in furnace wiring and steel mill transfer cars. No cold-flow cracking during winter shutdowns at -60°C. One cable specification covers your full climatic envelope.

Flat Profile Geometry: Pack More Conductors into Less Volume

Feature: A precision-extruded flat construction where individual cores run parallel, separated by a measurable web of silicone. Core spacing is held to a tolerance of ±0.2 mm across the ribbon.
Advantage: Heat dissipation follows a linear path perpendicular to each core’s surface, rather than a radial path through concentric layers. Ampacity retention is predictable.
What this means for your panel build: Shallow tray depths and narrow cable chains stop being a constraint. You reduce the cross-sectional height of a 4-core power loom by up to 60 percent compared to an equivalent circular cable. Less volume means less heat accumulation. Less heat accumulation means longer uninterrupted run life.

No Halogen, No Drip, No Secondary Damage

Feature: The insulation and outer sheath contain zero halogens and are formulated with a high Limiting Oxygen Index (LOI) exceeding 30 percent. Combustion byproducts consist primarily of silica ash and non-corrosive gases.
Advantage: In a fire event, no conductive hydrochloric acid fumes form. Adjacent switchgear, PLC racks, and structural steel escape corrosive secondary damage.
What this means for your insurance and compliance posture: Tunnel ventilation systems, underground metro substations, and offshore platform e-houses can remain serviceable longer during evacuation. Site hazard assessment reports reflect a lower risk profile when specifying silicone-insulated flat cable.

Extended Flex Life in Linear Motion Applications

Feature: The flat ribbon structure distributes bending stress across a wide neutral axis. Each core undergoes identical bend radius during spooling or C-track traversal.
Advantage: No single core bears torsional strain disproportionately. The silicone jacket maintains tensile strength and elongation above 300 percent after 100,000 motion cycles at a bend radius of 10 x cable height.
What this means for your maintenance schedule: Bridge cranes, automated retrieval systems, and stage machinery demand cable that doesn’t twist internally. This one doesn’t. You pull fewer replacement permits. Your inventory carries fewer spare drum lengths.

Technical Specifications & Dimensions

Industry Applications & Scenario Validation

• Steel & Non-Ferrous Smelting: Feeds power to ladle preheating stations and slag door actuators. Sustains flexibility at ambient melt-shop temperatures that carbonize EPDM jackets within weeks.
• Marine & Offshore Platform E-Houses: Connects emergency shutdown (ESD) panels to ventilation dampers. The zero-halogen formulation prevents corrosive smoke damage to busbar compartments during hydrocarbon fires.
• Overhead Crane & Hoist Systems: Supplies power transmission along I-beam festoon loops. The flat construction resists kinking and twisting when trolleys bunch together at minimum separation in the park position.
• Data Center Busway Tap-Offs: Links overhead busway distribution to server rack PDUs where under-floor space is absent. High LOI and low smoke density align with fire engineering performance-based waivers.
• Plastics & Rubber Processing Machinery: Wired directly to band heaters and extruder barrel zones. The 180°C continuous rating eliminates the need for protective ceramic bead sleeving, speeding up heater replacement cycles.

International Compliance & QA Standards

• ✅ IEC 60228 – Conductor construction and resistance verification (Class 5 flexible tinned copper)
• ✅ IEC 60332-1-2 – Flame propagation resistance for a single vertical cable
• ✅ EN 50363-1 – Sheathing compound specification for low-smoke zero-halogen materials
• ✅ RoHS Directive 2011/65/EU – Free of restricted heavy metals, including cadmium and hexavalent chromium
• ✅ CE Marking – Declared conformity under the Low Voltage Directive 2014/35/EU
• ✅ ISO 9001:2015 – Cable design, extrusion, and continuity testing traceable directly to your contract number
• ✅ IEC 60754-2 – Absence of corrosive gas emission during combustion (pH ≥ 4.3, conductivity ≤ 10 µS/mm)

FAQ

Q: At what continuous ambient temperature should we begin derating conductor ampacity, and do you supply derating tables specific to flat silicone cables?

The YGZB is thermally stable to 180°C at the conductor, but derating factors must be applied above 35°C ambient, as per IEC 60364-5-52 tabulations for thermosetting cables. Unlike PVC, silicone does not soften pre-maturely, so the correction starts gradually. We do supply proprietary derating curves plotted specifically for flat ribbon geometry, not generic round-cable tables. This distinction matters: the improved heat dissipation of our flat profile yields a 3-7 percent advantage in current-carrying capacity under identical ambient and grouping conditions versus a bundled circular silicone cable.

Q: Can you embed a metallic braided screen directly beneath the silicone sheath for VFD motor connections, and does this affect the minimum bend radius?

Yes, we integrate a tinned copper braid with optical coverage between 75 and 90 percent, seated over a polyester separator tape and directly under the outer silicone jacket. This configuration suppresses common-mode electrical noise without introducing an extra PVC bedding layer that would compromise thermal rating. The dynamic bending radius increases from 10x to 12x cable height with screening present, which we specify clearly at quote stage. We test every screened drum for braid continuity and partial discharge before shipment.

Q: What is your standard documentation package, and do you keep mill test reports on file for the specific silicone compound batch used in our order?

Every shipment includes a 3.1 inspection certificate per EN 10204 detailing raw compound lot numbers, conductor resistance measurements on the finished reel, spark test voltage results (typically 6 kV AC for 450/750 V grade), and dimensional compliance against agreed tolerances. We archive a full mill test report for each silicone batch for 10 years post-despatch. Should your project’s qualified person need to trace a specific reel back to compound rheology data, the report is retrievable within 48 hours.

Request a Sample Reel and Full Derating Data

Most catalogue cables fail inside the first thermal cycle an oven transfer cart makes. You know this because you’ve seen the blackened copper and the brittle insulation remnants.

Send us your operating ambient temperature range, the number of cores, and the total installed length. Our application engineers will return a technical proposal with the correct conductor cross-section, a derating table specific to your tray or chain layout, and a 5-metre sample reel cut directly from your next production allocation.

Contact [your email/contact form] to start that specification discussion. No distributor delay. No generic stocklist. Direct from extruder to your receiving dock.