Product Overview
NYY cables are PVC-insulated, PVC-sheathed power cables rated at 600/1000V for fixed installations. Designed for versatility across indoor, outdoor, underground, and submerged applications, they offer robust electrical performance with flame-retardant properties compliant with IEC 60502-1.
Key Standards
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Primary: IEC 60502-1
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Additional: VDE 0276, VDE 0271, HD 603 S1
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Flame Retardancy: IEC 60332-1
Construction
| Layer | Specification |
|---|---|
| Conductor | • Class 1 solid copper (re) or Class 2 stranded copper (rm) per IEC 60228 |
| Insulation | PVC (Polyvinyl Chloride) |
| Sheath | Flame-Retardant PVC (FR/PVC) • Color: Black |
| Core ID | • ≤5 cores: Color-coded (Brown/Blue/Black/Grey/Green-Yellow) • ≥7 cores: Numbered |
Technical Parameters
| Parameter | Specification |
|---|---|
| Voltage Rating | 0.6/1kV (U₀/U) |
| Temp. Range | Fixed: -40°C to +70°C • Flexing: -5°C to +50°C |
| Min. Bending Radius | Single-core: 15×OD • Multicore: 12×OD |
| Fire Performance | IEC 60332-1 compliant (Flame retardant) |
Key Features
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Environmental Resistance: Suitable for direct burial, concrete embedding, and freshwater immersion.
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Mechanical Protection: FR/PVC sheath resists abrasion, oils, and UV degradation.
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Electrical Stability: PVC insulation maintains dielectric strength in humid conditions.
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Installation Flexibility: Compatible with conduits, cable trays, and open-air runs.
Application Scenarios
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Power Distribution: Building mains, industrial plants, renewable energy systems.
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Infrastructure: Street lighting, subway systems, water treatment facilities.
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Fixed Installations:
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Underground networks
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Concrete-embedded circuits
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Control panels in damp environments
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Exclusions: Dynamic applications with continuous movement.
Engineering Selection Data
Single-Core Cables (rm):
| Size (mm²) | OD (mm) | Size (mm²) | OD (mm) |
|---|---|---|---|
| 2.5 | 6.15 | 95 | 17.6 |
| 16 | 9.6 | 240 | 26.2 |
Multicore Cables:
| Cores × mm² | Type | OD (mm) | Cores × mm² | Type | OD (mm) |
|---|---|---|---|---|---|
| 2 × 1.5 | re | 10.0 | 4 × 150 | rm | 48.5 |
| 3 × 6.0 | rm | 15.0 | 5 × 25 | rm | 26.6 |
| 4 × 95 | rm | 40.4 | 7 × 2.5 | re | 14.1 |
Full Size Range Excerpt:
| Configuration | Min Size | Max Size |
|---|---|---|
| 1-core | 1.5mm² | 300mm² |
| 2–5-core | 1.5mm² | 240mm² |
| 7–27-core | 1.5mm² | 2.5mm² (19-core) |
Complete dimensional tables available in technical datasheet.
Installation Guidelines
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Bending Radius:
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Single-core: ≥15× overall diameter
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Multicore: ≥12× overall diameter
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Ambient Temperature: ≥ -5°C during installation.
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Pulling Tension: Use cable grips – avoid conductor stress.
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Corrosion Protection: For acidic soils, use additional conduit.
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Grounding: Multicore cables require armor grounding per IEC 60364-5-52.
⚠️ Critical: Not suitable for dynamic flexing or tension-loaded applications.