Constructed as a highly pliable copper-based cable, LSZH (Low Smoke Zero Halogen) variants are engineered to deliver both flexibility and enhanced fire protection. In combustion scenarios, these cables generate very little smoke and emit zero halogenated toxins-such as chlorine or fluorine-thereby safeguarding both personnel and sensitive electronic equipment.

Application

Public Infrastructure

Deployed in subways, railway terminals, airports, and high-rise structures-environments where large numbers of people require unobstructed evacuation routes.

Data Centers & Server Rooms

Utilized for equipment power delivery, as conventional PVC insulation releases an acidic haze during combustion that can damage sensitive electronic assemblies.

Marine & Offshore Installations

Found on cargo ships and petroleum platforms, where escape from fire incidents is inherently constrained by the enclosed nature of these settings.

Key Materials and Construction

Class 5/6 Copper Conductors: Constructed from dozens of ultra-fine stranded copper wires-either bare or tin-plated. This dense strand configuration provides exceptional flexibility, enabling the cable to accommodate tight bends and repeated twisting without risk of conductor breakage.

LSZH Insulation & Sheath: Formulated from thermoplastic polyolefins blended with inherent flame-retardant mineral fillers, such as aluminum trihydrate. This compound offers self-extinguishing characteristics and releases no corrosive acid gases when subjected to flame exposure.

Comparison: LSZH vs. Standard Flexible Cable

Feature	LSZH Flexible Cable	Standard PVC Flexible Cable
Smoke Emission	Very low; keeps escape routes clear.	Thick, black smoke; blocks vision.
Toxicity	Zero halogens; safe for enclosed spaces.	Releases toxic Hydrogen Chloride (HCl) gas.
Flexibility	High (Class 5/6 conductors).	High (Class 5/6 conductors).
Acid Corrosion	None; will not destroy computer servers.	High; forms hydrochloric acid with moisture.

Packaging

Finished product + wooden barrel packaging

902915

Technical index

Item	Specification
Model Type	WDZ-RYY (LSZH Flexible Cable)
Rated Voltage (U₀/U)	300/500V
Test Voltage	2000V
Conductor	Plain Annealed Bare Copper (IEC 60228 Class 5)
Insulation & Sheath	Low Smoke Zero Halogen Polyolefin (Grey RAL 7001)
Max. Operating Temp.	+90°C (Conductor continuous)
Min. Ambient Temp.	-15°C
Min. Bending Radius	Fixed: ≥ 6 × OD / Mobile: ≥ 15 × OD
Safety Compliance	IEC 60754-2, IEC 61034, IEC 60332-1, RoHS