WDZB1N--YJY23 Environmental protection and safety XLPE Insulated and Sheathed Power Cable

Conductor

 Copper, specially stranded. Covered with double-layer mica tape or equivalent mineral-insulated fire-resistant layer.

Insulation

 Cross-linked polyethylene (XLPE), long-term operating temperature 90°C.

Inner sheath

 Polyolefin (halogen-free).

Armor layer

 Double-layer galvanized steel tape, providing extremely high compressive strength.

Outer sheath

 Polyethylene (PE) or polyolefin (halogen-free).

Rated voltage

 0.6/1 kV (mainstream).

Long-term operating temperature

 +90°C (Note- Due to the thermal insulation of the fire-resistant layer, the actual current-carrying capacity requires correction, typically multiplied by a factor of 0.7–0.85).

Short-circuit temperature

 +250°C (5 seconds).

Fire resistance performance

 Core. Complies with GB/T 19216.21 (IEC 60331-1) testing, common rating- continuous power supply for 90/180 minutes under 950°C flame (e.g., NH-IA90).

Combustion performance rating

 B1 grade (GB 31247). Must pass a full set of stringent tests, including combustion calorific value, heat release rate, smoke density, smoke toxicity, etc.

Halogen-free and low-smoke performance

 pH ≥ 4.3, conductivity ≤ 10 μS/mm; smoke density and light transmittance meet B1 grade requirements.

Minimum bending radius

 Very large (multi-core ≥ 12D–15D, varies with structure).