WDZC-YJY23-3×50+2×25 Low-smoke Halogen-free Flame-retardant Power Cable Technical Analysis
I. Model Definition and Structure
WDZC-YJY23‌：
WDZC: Halogen-free, low-smoke flame-retardant Class C (compliant with GB/T 19666-2019 standard)
YJY: Cross-linked Polyethylene (XLPE) Insulation + Polyolefin Sheath (Y)
23: Double steel tape armoring (2) + polyethylene outer sheath (3), compressive strength ≥ 50 kN/m².
3x50+2x25: 3-core main cross-section 50mm² (power line) + 2-core neutral/ground wire 25mm² (copper conductor diameter approx. 7.1mm).
II. Key Performance Parameters
Parameters Technical Specifications Standard Basis
Rated Voltage 0.6/1kV (phase voltage 600V, line voltage 1kV) GB/T 12706.1-2020
Operating Temperature -40℃ to 90℃ (long-term) GB/T 19666-2019
Flame Retardancy Rating C Class (Bundle Combustion Test) GB/T 18380.3-2008
Bend Radius ≥15 times outer diameter (armored structure) IEC 60502-1:2020
Section 3: Application Scenarios
High-rise Buildings: Fire protection system distribution (low smoke and halogen-free for safe evacuation).
Subway/Tunnel: Power and lighting circuits (armored layer for mechanical damage resistance)
Industrial Facilities: Flammable environments such as petrochemical plants and power stations (fire-retardant Class C in compliance with GB 50217 requirements).