Fire Resistant Flexible STA Copper LSZH Cable

The Fire-Resistant Flexible STA Copper LSZH Cable represents a robust specialty solution that integrates fire-retention capability, crush-resistant mechanical protection, and halogen-free safety-all while maintaining installation-friendly flexibility. Within the industry, this specific multi-layer construction is commonly designated by identifiers such as WDZN-R-YJV22 or WDZN-KVVR22.

Subway & Underground Transit: Vital power distribution cables installed within crowded passenger tunnels.

High-Rise Emergency Supply Lines: Delivering electricity to fire-fighting pumps, smoke ventilation fans, and vertical service feeders in tall buildings.

Industrial Sites & Wastewater Treatment Plants: Facilities subject to substantial mechanical activity, demanding robust resistance against crushing forces.

Continuous Thermal Rating: Under standard operating cycles, the maximum allowable conductor temperature is typically capped at 90°C for sustained service.

Voltage Specification: Nominal voltage ratings generally span from 300/500V up to 0.6/1kV, with the precise value determined by whether the cable is deployed for control circuitry or primary power transmission.

Installation Suitability: Especially appropriate for spaces with restricted airflow, poor ventilation, or high occupant density-including data centers, airport terminals, healthcare facilities, and underground transit tunnels.

Performance Under Fire Exposure

Circuit Integrity (FE180)

Products that comply with IEC 60331-21 are capable of maintaining electrical continuity for up to 180 minutes when subjected to direct flame exposure.

Combined Stress Resistance (PH120)

Advanced-grade versions meeting PH120 criteria continue to power vital safety circuits for 120 minutes while enduring simultaneous fire exposure, mechanical shock, and water jet testing.

Flame Containment (E30–E90)

Fire spread is efficiently limited to a localized area. Systems verified to DIN 4102-12 (performance classes E30 through E90) sustain full operability for evacuation and fire-fighting purposes within a 30 to 90 minute timeframe.

Smoke & Emission Profile

Generates only low-density white smoke to preserve visual clarity, and emits no corrosive or poisonous halogenated substances-including chlorine or fluorine-during combustion.

Exceptional Circuit Integrity Under Fire: Engineered to endure extreme heat or direct flame contact, this cable preserves electrical conduction for a predetermined period in accordance with IEC 60331 and equivalent international standards-guaranteeing that life-safety systems remain functional during emergency situations.

Reduced Smoke Output: Heavy smoke represents a major threat in fire scenarios, frequently causing confusion and obstructing evacuation routes. This cable's formulation yields very low smoke emissions with minimal optical density, enhancing visibility and aiding safer occupant escape.

Halogen-Free & Environmentally Conscious: Unlike traditional PVC-insulated cables that discharge corrosive and noxious gases-including hydrogen chloride-upon burning, this halogen-free design releases no acidic or toxic combustion byproducts, complying with green construction standards and rigorous material safety regulations.

Strong Mechanical & Electrical Properties: In addition to its fire-protection and environmental advantages, this cable demonstrates excellent resistance to physical impact, surface wear, and aging, coupled with outstanding dielectric performance. These features render it highly appropriate for severe or challenging service conditions.

Finished product + wooden barrel packaging