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Preformed Guard Wires (SHL) (4).jpg
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China Preformed Guard Wires (SHL) - High-Quality Suppliers & Factory for Conductor Protection

Purpose and Structure of Preformed Guard Wires

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Preformed guard wires (SHL) are essential components designed to protect conductors from various threats such as vibration, clamp pressure, abrasion, arcing, and other external damages. These specialized products are manufactured in China, by leading suppliers and factories dedicated to high-quality electrical components.

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When conductors experience mild abrasion, preformed guard wires effectively shield the damaged sections from arcing, further abrasion, and additional harm. They also serve as excellent repair strips, mending injured conductors and restoring their original mechanical strength and electrical conductivity.

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Moreover, these guard wires offer critical protection to branch clamps, preventing damage at conductor branch points that can occur due to bending and abrasion. The preformed guard wires and preformed short guard wires feature a straightforward structure: a set of preformed wires is shaped into a hollow tube, creating a gripping force when wrapped around the conductor—ensuring robust protection.

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    Product Details

    Selection Table of Preformed Armor Rods for Steel - Reinforced Aluminum Stranded Wire

    Company Product Model Industry Standard Model Applicable Conductor Type (GB1179 - 83)
    Steel - Reinforced Aluminum Stranded Wire LGJ/LGJF    		 Reference Length (mm) Wire Diameter (mm) Wire Weight (Kg) Color Code
    Conductor Model Outer Diameter
    HL - 35/6 HL - 35/6 Jun-35 8.16 1100 3 0.22 Red
    HL - 50/8 HL - 50/8 Aug-50 9.36 1270 3 0.3 Black
    HL - 95/15 HL - 95/15 95/15 13.37 1400 3.6 0.55 Yellow
    HL - 95/20 HL - 95/20 95/20 13.57 0.58 Yellow - green
    HL - 95/55 HL - 95/55 95/55 16.8 1500 3.6 0.7 Red
    HL - 120/7 HL - 120/7 120/7 14.5 1400 3.6 0.58 White
    HL - 120/20 HL - 120/20 120/20 15.07 0.63 Blue - white
    HL - 120/25 HL - 120/25 120/25 15.74 4.6 0.63 Brown
    HL - 150/8 HL - 150/8 150/8 16 1800 3.6 0.75 Red
    HL - 150/20 HL - 150/20 150/20 16.67 1500 0.7 Red
    HL - 150/25 HL - 150/25 150/25 17.1 3.6 0.75 Blue
    HL - 150/35 HL - 150/35 150/35 17.9 Blue - green
    HL - 185/10 HL - 185/10 185/10 18.5 1.28 Yellow
    HL - 185/25 HL - 185/25 185/25 18.8 1800 1.31 White
    HL - 185/30 HL - 185/30 185/30 19.38 1.3 Blue - green
    HL - 185/45 HL - 185/45 185/45 19.4 4.6 White
    HL - 210/10 HL - 210/10 210/10 19.9 1.3 White
    HL - 210/25 HL - 210/25 210/25 20.38 1.31 Brown
    HL - 210/50 HL - 210/50 210/50 20.86 Purple
    HL - 240/30 HL - 240/30 240/30 21.6 1900 4.6 1.53 Blue
    HL - 240/55 HL - 240/55 240/55 22.6 Blue - green
    HL - 300/15 HL - 300/15 300/15 23.01 2000 6.3 2.26 Black
    HL - 300/20 HL - 300/20 300/20 23.43 2.44 White
    HL - 300/25 HL - 300/25 300/25 23.76
    HL - 300/50 HL - 300/50 300/50 24.26 2.46 Brown
    HL - 300/70 HL - 300/70 300/70 25.2 2.48 Blue
    HL - 400/20 HL - 400/20 400/20 26.91 2200 6.3 2.98 Blue - green
    HL - 400/35 HL - 400/35 400/35 26.73 3 Green
    HL - 400/50 HL - 400/50 400/50 27.82 Yellow
    HL - 400/95 HL - 400/95 400/95 28.14 3.1 White
    HL - 500/35 HL - 500/35 500/35 30 2500 6.3 3.77 Brown
    HL - 500/45 HL - 500/45 500/45 30.3 Orange
    HL - 500/65 HL - 500/65 500/65 30.6 Purple
    HL - 630/45 HL - 630/45 630/45 33.4 7.8 5.1 Yellow - green
    HL - 630/80 HL - 630/80 630/80 34.32 5.4 Black
    HL - 630/100 HL - 630/100 630/100 35.42 6 Red
    HL - 800/55 HL - 800/55 800/55 38.4 7.8 6 Red
    HL - 800/70 HL - 800/70 800/70 38.58 6.1 Blue
    HL - 800/100 HL - 800/100 800/100 38.98 6.2 Blue - green

    Frequently Asked Questions (FAQ)

    1. What is the primary function of preformed armor rods?

    Preformed armor rods are designed to protect conductors against bending, compression, abrasion, and arc-over. They also help reduce wind-induced vibration (aeolian vibration) and protect the wire from mechanical fatigue, extending the overall lifespan of the overhead lines.

    2. How do I choose the correct model of armor rods from the selection table?

    You should match the model based on your conductor type (e.g., LGJ/LGJF stranded wire), the outer diameter of the conductor, and the required reference length. Ensure the color code matches the industry standard for easy installation verification.

    3. What do the color codes represent?

    Color codes on the preformed armor rods serve as a quick identification mark to ensure the correct rod set matches the outer diameter of the specific conductor model during field installation, preventing mismatch errors.

    4. Can these preformed armor rods be used for repair purposes?

    Yes, preformed armor rods can be used as a repair rod sleeve to restore mechanical strength and electrical conductivity when the outer aluminum strands of the conductor are damaged (typically up to 25% of the outer strands).

    5. Are these rods compatible with both LGJ and LGJF stranded wires?

    Yes, the preformed armor rods listed in the selection table are compatible with both Steel-Reinforced Aluminum Stranded Wire (LGJ) and anti-corrosive Steel-Reinforced Aluminum Stranded Wire (LGJF) complying with the GB1179-83 standard.

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