I. Basic Definition and Model Designation
Model Breakdown
YJLV22 8.7/15kV
YJ: XLPE (cross-linked polyethylene) insulation
L: Aluminum conductor
V: PVC (polyvinyl chloride) inner sheath
2: Double steel tape armor
2: PVC (polyvinyl chloride) outer sheath
8.7/15kV: Rated voltage (phase voltage 8.7kV, system line voltage 15kV, standard medium-voltage cable for 10kV distribution)
II. Core Technical Parameters and Operating Characteristics
1. Standard: GB/T 12706.2-2020
2. Long-term allowable conductor operating temperature: 90°C
3. Short-circuit limit temperature within 5s: 250°C
4. Minimum ambient temperature for installation: ≥0°C
5. Minimum bending radius: 15 times the cable outer diameter
6. Structural advantages: Steel tape armor provides strong radial compression resistance, withstanding soil gravel, heavy object rolling, and external mechanical damage
7. Limitations: Steel tape cannot withstand axial tensile force; long-distance vertical shaft and underwater drop installations are prohibited
8. Applicable frequency: AC 50Hz three-phase medium-voltage distribution system
III. Main Application Scenarios
1. Suitable for fixed installation in 10kV power grids:
2. Outdoor direct burial in soil (urban power grids, rural distribution lines)
3. Direct burial conduits under roads, green belts, and plant underground areas
4. Cable trenches, tunnels, and cable trays in sections prone to mechanical damage
5. Underground power transmission trunk lines for photovoltaic, wind power, and industrial/mining plants
6. Prohibited scenarios: Vertical cable shafts in high-rise buildings, underwater, and mountainous areas with large drops (for tensile conditions, select YJLV32 fine steel wire armored cable)
IV. Standard Specifications
Mainstream core count: 3 cores (standard three-core structure for 10kV medium voltage)
Common conductor cross-sections (mm²): 50, 70, 95, 120, 150, 185, 240, 300, 400
