Flexible Rubber Insulated Cable H05rn-F H07rn-F 2 3 4 5 6 Core 4mm2 6mm2 10mm2 16mm2 25mm2

1. Product Specifications and Core Attributes

Electrical and Mechanical Specifications

• Voltage Ratings:

• H05RN-F: 300/500V, suitable for low-voltage power distribution in portable equipment and temporary installations.

• H07RN-F: 450/750V, designed for higher-power applications such as industrial machinery and three-phase systems.

• Temperature Range: Continuous operation from -30°C to 90°C; short-term tolerance up to 130°C for 5 seconds (e.g., during overloads).

• Core Configurations: 2, 3, 4, 5, or 6 cores, with each core individually insulated and bundled within an outer Rubber Sheath.

• Conductor Sizes and Current Capacity:

• 4mm²: 21A (H05RN-F) / 26A (H07RN-F)

• 6mm²: 27A (H05RN-F) / 34A (H07RN-F)

• 10mm²: 40A (H05RN-F) / 50A (H07RN-F)

• 16mm²: 54A (H05RN-F) / 68A (H07RN-F)

• 25mm²: 70A (H05RN-F) / 88A (H07RN-F)
  Note: Current ratings based on free-air installation; derating applies for conduit or high-temperature environments.

• Flexibility: Minimum bend radius of 6× the cable diameter (e.g., 36mm for a 6mm diameter cable), enabling tight routing in confined spaces.

• Flame Resistance: Meets EN 60332-1-2 for vertical flame propagation, self-extinguishing within 60 seconds of ignition source removal.

2. Material Composition and Design

Conductors: Fine-Stranded Copper

• Enhances flexibility by distributing mechanical stress during bending, twisting, or coiling—critical for dynamic applications like construction tools or portable generators.

• Ensures low electrical resistance (≤0.0172Ω·mm²/m at 20°C), minimizing energy loss during power transmission.

• Resists fatigue from repeated movement, extending service life in applications requiring frequent repositioning.

Insulation: Rubber Compounds

• Chloroprene Rubber: Offers superior resistance to oils, greases, and ozone, making it ideal for industrial environments with chemical exposure.

• EPDM Rubber: Provides excellent weatherability, UV resistance, and flexibility at low temperatures (-30°C), suitable for outdoor use in harsh climates.

Reinforcement and Sheathing

• Braided Reinforcement: A textile (polyester) or steel braid is applied over the Insulated Cores to enhance tensile strength, preventing stretching or tearing during heavy handling. Steel braids add extra durability for mining or construction applications.

• Outer Sheath: A tough rubber (CR or EPDM) sheath encases the braided core, providing abrasion resistance, water resistance (IP65-rated when properly terminated), and protection against mechanical impact. The sheath is colored black as standard, with options for orange (high-visibility) in hazardous areas.

3. Specialized Applications

Construction and Infrastructure

• Temporary Power Distribution: Used on building sites to connect generators to tools (jackhammers, concrete mixers) and temporary lighting. The 4mm² and 6mm² 3-core H05RN-F cables are common for 230V tools, while 10mm²–25mm² H07RN-F variants power 400V three-phase machinery.

• Cranes and Hoists: Flexible enough to withstand the constant movement of crane booms, with 5-core or 6-core configurations integrating power and control signals.

• Tunnel Construction: Resistant to dust, moisture, and mechanical damage, these cables power boring machines and ventilation systems in confined spaces.

Industrial Manufacturing

• Factory Machinery: Connect motors, conveyors, and robotic arms in automotive, aerospace, and packaging plants. The oil-resistant sheath protects against lubricants, while flexibility allows routing around moving parts.

• Food Processing: EPDM-Sheathed Cables resist cleaning chemicals (acids, alkalis) used in hygiene-critical areas, ensuring compliance with FDA standards.

• Steel Mills and Foundries: Withstand high ambient temperatures (up to 90°C) near furnaces, using 16mm²–25mm² H07RN-F cables for heavy-duty power supply.

Outdoor and Event Management

• Festivals and Concerts: Temporary power grids rely on 3-core or 4-core H05RN-F cables to connect stages, lighting rigs, and sound systems. Their UV resistance prevents degradation in direct sunlight.

• Marine and Offshore: Moisture-resistant sheathing makes them suitable for docks, piers, and small boats, where exposure to saltwater is common (paired with corrosion-resistant terminations).

• Agriculture: Power irrigation systems, grain dryers, and farm machinery. The rugged sheath resists damage from soil, fertilizers, and animal contact.

Emergency Services

• Firefighting Equipment: Used in mobile command centers and rescue vehicles, with flame-retardant properties critical for high-risk environments.

• Disaster Relief: Deployed in temporary shelters and medical camps, where durability and quick installation are essential.

4. Manufacturing Process

Conductor Preparation

• Copper Drawing: Raw copper rods are drawn through diamond dies to produce fine wires (0.1mm–0.3mm diameter), then annealed at 400°C to soften the metal for flexibility.

• Stranding: Wires are twisted into conductors using a high-speed stranding machine, with lay lengths (twist spacing) optimized for flexibility—shorter lays (10mm–20mm) for smaller cores.

Insulation Extrusion

• Rubber Compounding: CR or EPDM rubber is mixed with additives (flame retardants, antioxidants) and cured into a malleable compound.

• Extrusion: Conductors are fed through an extruder, where molten rubber is applied at 120°C–150°C to form insulation layers (0.6mm–1.5mm thick, depending on core size).

• Vulcanization: Insulated cores are heated to 160°C–180°C in a pressure chamber to cross-link rubber molecules, enhancing heat resistance and elasticity.

Cabling and Reinforcement

• Core Assembly: Insulated cores are twisted together with filler materials (polypropylene rope) to form a round bundle, ensuring uniform sheath thickness.

• Braiding: A textile or steel braid is wrapped around the bundle using a braiding machine, with coverage density (≥90%) specified to meet tensile strength requirements.

Sheath Extrusion and Testing

• Sheath Application: The braided bundle is passed through a second extruder to apply the outer rubber sheath, which is then vulcanized to bond with the braid.

• Quality Testing:

• Electrical Tests: Dielectric strength (5kV for 1 minute), insulation resistance (>100MΩ at 500V DC).

• Mechanical Tests: Flex testing (20,000 cycles at 90° bends), abrasion resistance (using a rotating drum with sandpaper).

• Environmental Tests: Immersion in water (24 hours) to verify water resistance; exposure to -30°C and 90°C to test flexibility retention.

5. General Product Information

Packaging

• Reels: Standard lengths (50m, 100m, 200m) are wound onto steel or plywood reels with flanges (30cm–1.2m diameter). Reels are labeled with product code (H05RN-F/H07RN-F), core count, conductor size, length, and batch number.

• Coils: Short lengths (10m–30m) are coiled and wrapped in heavy-duty plastic film, with a cardboard sleeve for rigidity.

• Protection: All packages include a moisture barrier (kraft paper or plastic) to prevent water damage, and reels are secured with steel straps to avoid unwinding during transit.

Transportation and Handling

• Shipping Modes: Available via road (trucks with reel lifts), sea (container shipping for international orders), or air (for urgent deliveries).
• Handling Guidelines:

• Reels must be moved with forklifts or cranes using reel hooks—never dragged or dropped, as this can damage the sheath or conductors.

• Cables should be stored horizontally in a dry, ventilated area, away from direct sunlight and temperatures exceeding 50°C.

• Unused cable must be rewound tightly to prevent kinking, which can degrade insulation over time.

• Storage Conditions: Ideal storage temperature is 10°C–30°C with relative humidity ≤70%. Avoid contact with oils, solvents, or sharp objects that could pierce the sheath.

Sample Provision

• Sample Availability: Free 1m–5m samples are available for standard configurations (e.g., 3-core 6mm² H05RN-F), shipped within 2–3 business days.

• Custom Samples: Specialized variants (e.g., steel-braided H07RN-F) incur a fee and require 5–7 days for production.

• Sample Documentation: Each sample includes a datasheet with specifications, test results, and compliance certificates (EN 50525, RoHS).

Ordering and Delivery

• Minimum Order Quantity (MOQ): 50m for standard configurations; 100m for custom variants (e.g., high-visibility orange sheaths).

• Lead Times: Standard orders ship within 3–5 business days. Bulk orders (1000m+) may require 7–10 days.

• Pricing: Varies by core count, conductor size, and reinforcement type (steel-braided cables cost 15–20% more than textile-braided). Volume discounts apply for orders over 500m.

• Payment Terms: T/T, L/C, or credit card for international orders; net-30 terms for established clients.

After-Sales Support

• Warranty: 5-year warranty against manufacturing defects (e.g., insulation cracking, braid failure under normal use). Excludes damage from improper installation, chemical exposure beyond specifications, or mechanical abuse.

• Technical Assistance: A team of engineers provides guidance on installation (e.g., proper termination methods using rubber-compatible connectors), derating factors for high-temperature environments, and compliance with local electrical codes.

• Returns and Replacements: Defective products can be returned within 30 days for a full refund or replacement, provided the issue is verified with photos and the CoC.

• Maintenance Tips: Regular inspections for sheath damage; cleaning with a damp cloth (avoid harsh solvents); and avoiding prolonged exposure to temperatures above 90°C.