SIP-5ng (AsXSn) is a self-supporting insulated wire featuring a round aluminum conductor and flame-retardant, UV-resistant cross-linked polyethylene (XLPE) insulation. It is designed for 0.6/1kV overhead power distribution lines, especially in dense urban environments. This wire does not include a load-bearing messenger, making it suitable where the conductor bundle itself carries the mechanical load.
The SIP-5ng wire provides enhanced safety and installation flexibility compared to traditional bare conductors, with significantly reduced risk of short circuits, lower transmission losses, and compatibility with space-constrained layouts.
Key Applications
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Overhead low-voltage distribution networks (0.6/1kV, 50Hz)
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Urban and residential power transmission
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Facade-mounted installations
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Areas requiring flame-retardant and sunlight-resistant cables
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Modern replacements for bare aluminum conductors in existing lines
Advantages Over Bare Conductors
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No short circuits between phases due to solid insulation
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Reduced mechanical failures from wire crossing or external contact
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Smaller support structures can be used (e.g., wooden poles or compact concrete masts)
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Closer installation near buildings thanks to insulated core
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Lower energy losses due to reduced inductive reactance
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Supports facade or wall-mounted layouts for urban installation
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Fire-resistant XLPE insulation ensures higher safety
Construction Details
| Component | Description |
|---|---|
| Core Material | Compact round aluminum, multi-stranded (16–120 mm²) |
| Twisting | Conductors twisted with a pitch ≤ 450 mm; right-hand lay up to 25 mm² |
| Insulation | UV-resistant, flame-retardant XLPE (cross-linked polyethylene) |
| Messenger Wire | None (self-supporting design) |
| Armor / Shield | None |
Technical Specifications
| Parameter | Value |
|---|---|
| Rated Voltage | 0.6/1 kV |
| Frequency | Up to 50 Hz |
| Operating Temperature Range | -60°C to +50°C |
| Minimum Installation Temperature | -20°C |
| Max Continuous Operating Temp. | 90°C |
| Permissible Overload Temp. (8h/day) | 130°C |
| Short-Circuit Temp. (≤5 sec) | 250°C |
| Minimum Bending Radius | 10 × cable diameter |
| Service Life | ≥ 25 years |
Common Sizes and Mechanical Properties
| Wire Type | Nom. Conductor Dia (mm) | Outer Dia (mm) | Weight (kg/km) | Breaking Load (kN) | Insul. Thickness (mm) |
|---|---|---|---|---|---|
| SIP-5ng 2×16 | 4.8 | 16.8 | 138.1 | 5.0 | 1.2 |
| SIP-5ng 4×16 | 4.8 | 20.2 | 276.2 | 9.8 | 1.2 |
| SIP-5ng 4×25 | 6.0 | 23.4 | 400.5 | 15.4 | 1.2 |
| SIP-5ng 4×35 | 7.0 | 26.1 | 521.2 | 21.5 | 1.2 |
| SIP-5ng 4×50 | 8.4 | 30.9 | 730.8 | 30.7 | 1.4 |
| SIP-5ng 4×70 | 9.8 | 34.6 | 983.1 | 43.0 | 1.6 |
| SIP-5ng 4×95 | 11.6 | 39.9 | 1304.6 | 58.4 | 1.7 |
| SIP-5ng 4×120 | 13.0 | 43.6 | 1624.4 | 73.7 | 1.7 |
Abbreviation Breakdown
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SIP – Self-supporting Insulated Wire
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ng – Non-flame-propagating insulation
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AsXSn (European equivalent):
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A – Aluminum conductor
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s – Self-supporting
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XS – XLPE insulation, UV resistant
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n – Flame retardant insulation
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Contact Us
TOT Wire & Cable provides reliable SIP-5ng (AsXSn) wires for overhead distribution systems. For technical support, certifications, or bulk pricing, contact us today — we’re ready to help with your next power distribution project.