H07V-R Cable: 450/750V Stranded Single Core Wire From Haiyan ADS

  In industrial electrical engineering and large-scale infrastructure projects, wiring integrity determines operational safety, energy efficiency, and regulatory compliance. The H07V-R cable represents a harmonized European standard (HAR) single-core building and conduit wire engineered specifically for secure, permanent, and semi-rigid electrical installations.

Standardized under EN 50525-2-31 and IEC 60227, the alphanumeric code designates precise technical properties:

• H: Harmonized standard approval (CENELEC).
• 07: Rated voltage of 450/750V (U0/U).
• V: Polyvinyl Chloride (PVC) insulation rated for continuous operation up to 70°C.
• -R: Class 2 stranded round plain copper conductor (conforming to IEC 60228).

  Unlike flexible Class 5 fine-wire conductors or single-strand solid conductors, H07V-R occupies a critical midpoint: it delivers superior form-retention inside conduits while providing the necessary mechanical compliance for pulling through complex commercial duct systems.

  For electrical contractors, switchgear builders (OEMs), and cable distributors, choosing a validated manufacturer ensures electrical stability and eliminates field failures. Haiyan ADS Special Cable Co., Ltd. delivers 30 years of advanced cable manufacturing expertise, producing precision-engineered H07V-R wires tailored to stringent international standards.

  Technical Specifications & Engineering Advantages

  The H07V-R wire is engineered to maintain electrical integrity under mechanical pulling stress, continuous thermal load, and commercial building environments.

  1. Class 2 Stranded Conductor Performance

       The core of the H07V-R consists of high-purity, oxygen-free bare copper wires stranded together according to IEC 60228 Class 2.

• Form Retention: Unlike high-flexibility cables that sag, H07V-R holds its bent shape within electrical panels, cable trays, and enclosures, resulting in clean, structured, and permanent cabinet wiring.
• Optimized Termination: The stranded geometry provides a large contact surface for heavy-duty screw terminals, mechanical lugs, and crimp connectors without strand breakage, ensuring minimal contact resistance and avoiding hot-spot formation.
• Lower Skin Effect: At commercial AC power frequencies, the multi-wire strand layout optimizes cross-sectional current distribution compared to heavy solid conductors.

  2. Dielectric & Electrical Ratings

• Rated Operating Voltage (U0/UU_0/UU0​/U): 450/750 V AC (suitable up to 1000 V AC or 750 V DC for fixed, protected installations inside equipment).
• Test Voltage: 2,500 V AC for 5 minutes without dielectric breakdown.
• Conductor Operating Temperature: Maximum continuous service temperature of +70°C; maximum short-circuit temperature of +160°C (duration ≤5\le 5≤5 seconds).
• Insulation Resistance: ≥10 MΩ⋅km\ge 10\ \text{M}\Omega \cdot \text{km}≥10 MΩ⋅km at 20°C, delivering total insulation security against transient overvoltages.

  3. Flame Retardant & Mechanical Outer PVC Compound

       Insulated with custom-compounded, heavy-duty lead-free PVC:

• Flame Retardancy: Self-extinguishing and flame-retardant according to IEC 60332-1-2 and EN 60332-1-2.
• Abrasion Resistance: High mechanical shear resistance, preventing insulation cut-through when pulled through corrugated plastic conduits or metal trunking.
• Environmental Stability: Formulated to resist light oils, airborne contaminants, and humidity degradation in enclosed commercial pathways.

  Key Industrial & Commercial Applications

     H07V-R is specified where mechanical stability, long-term durability, and electrical protection inside conduit systems are non-negotiable.

1. Building Wire inside Conduits & Trunking: Installed in surface-mounted, embedded, or enclosed conduit networks across high-rise residential, commercial hubs, and manufacturing facilities.
2. Switchgear & Distribution Assemblies: Ideal for wiring power distribution boards, low-voltage control cabinets, and switchboards where rigid wire dressing is necessary for traceability and thermal clearance.
3. Internal OEM Machinery Wiring: Applied inside machine tools, industrial ovens, and processing plants where the cable is shielded from direct movement, vibration, and environmental UV exposure.
4. Lighting & Power Infrastructure: Serves as the primary feeder cable for architectural lighting circuits, industrial high-bay fittings, and single-phase/three-phase branch circuits.

  Why Source from Haiyan ADS Special Cable Co., Ltd.?

  Selecting an experienced manufacturing partner ensures stable electrical resistance, precise copper weight, and regulatory compliance. Haiyan ADS Special Cable Co., Ltd. provides distinct supply advantages for EPC contractors, industrial wholesalers, and OEMs worldwide:

• 30-Year Manufacturing Legacy: Operating continuously for three decades, Haiyan ADS integrates European standard design with mature manufacturing execution. Our engineering team oversees every conversion step from copper rod drawing to final extrusion.
• Certified Quality Architecture: Our manufacturing operations are ISO 9001:2015 certified. We hold international product credentials, including UL listings, CE compliance, and verified adherence to RoHS and REACH environmental directives.
• In-House Quality Control Laboratory: Every production batch undergoes strict quality gates:
  • In-line continuous laser spark testing (up to 10 kV) for 100% pinhole-free insulation.
  • Direct-current (DC) conductor resistance benchmarking via digital micro-ohm bridges.
  • Thermal aging tests, elongation measurements, and automated tensile testing.