CAAI-S cables are a type of low-voltage aerial bundled cable designed for overhead power distribution networks. What makes the 'S' variant unique is that its neutral messenger conductor is made of galvanized steel instead of an aluminum alloy, offering higher tensile strength for self-supporting applications. This cable is an updated take on the traditional CAAI cable.
Key Specifications & Construction
- Voltage: 0.6/1kV
- Conductor Materials:
- Phase & Lighting Conductors: Stranded round, hard-drawn aluminum (class 2)
- Neutral Messenger Conductor: Galvanized steel conductor for high strength
- Insulation: XLPE (Cross-linked polyethylene)
- Core Configuration: Available in 2-5 cores, including phase, neutral, and optional lighting conductors.
- Packaging: Export wooden drum & iron wooden drum or as per customer requirements.
Applications & Advantages
This cable is a modern solution for overhead power transmission lines. It's particularly useful for:
- Improving the safety and reliability of power grids.
- Increasing span lengths between support poles due to its high-strength steel messenger wire.
- Simplifying installation and reducing the need for multiple support structures.
The XLPE insulation provides excellent resistance to environmental factors like heat, moisture, and UV light, ensuring long-term durability.
Standards Compliance
CAAI-S cables are manufactured to meet several international standards, including:
- IEC 60228 / NTP-IEC 60228: Specifies the requirements for conductors of insulated cables.
- ASTM A 475: Pertains to zinc-coated steel wire strand, relevant to the galvanized steel messenger.
- NTP 370.254: A standard for self-supporting XLPE insulated cables for overhead distribution networks up to 0.6/1 kV.