I. Product-Specific Details
1. Specification Parameters
The 450/750V H07V-K and H05V-K
Electrical Wires are engineered with precise technical specifications to meet the demands of house building and electrical supply, ensuring safety, efficiency, and durability across residential and light commercial applications. These parameters, aligned with EN 50525 standards, define their performance capabilities and suitability for diverse environments.
Conductor Specifications
Both wire types feature stranded
Copper Conductors, with cross-sectional areas of 1.5mm², 2.5mm², and 4mm². The stranded design consists of 7 to 37 individual
Copper Strands (depending on size), each with a diameter of 0.25mm to 0.5mm, twisted helically to enhance
Flexibility. The copper used is 99.9% pure, delivering a conductivity of 580 S/m—minimizing energy loss during transmission.
The conductors exhibit a tensile strength of 220 N/mm² and elongation at break of 15%, ensuring resistance to stretching during installation while allowing minor bending without structural damage.
Insulation Properties
Both wires feature
PVC Insulation, but with variations tailored to their intended environments:
H05V-K: Insulation thickness ranges from 0.6mm (1.5mm²) to 0.8mm (4mm²), with an overall diameter of 3.0mm to 4.5mm. It operates within a temperature range of -15°C to +70°C, with short-term overload tolerance up to +90°C for 5 seconds.
H07V-K: Insulation thickness is 0.7mm (1.5mm²) to 0.9mm (4mm²), resulting in an overall diameter of 3.2mm to 4.8mm. It offers enhanced thermal resistance, operating from -25°C to +90°C, with short-term overload up to +110°C for 5 seconds.
The PVC insulation for both types has a dielectric strength of ≥15 kV/mm, ensuring safe operation at 450/750V (phase-to-ground/phase-to-phase). It also boasts a volume resistivity of ≥1×10¹⁴ Ω·cm, preventing electrical leakage.
Mechanical and Safety Ratings
Chemical Resistance: Resistant to oils, greases, and weak acids (pH 4–9), ensuring stability in kitchens, garages, and utility rooms.
2. Unique Applications
The H07V-K and H05V-K wires cater to distinct environments and power requirements, making them versatile solutions for house building and electrical supply. Their size range and performance traits enable targeted use across residential and light commercial settings.
H05V-K: Dry Indoor Applications
Lighting Circuits: The 1.5mm² variant is ideal for powering LED, incandescent, or fluorescent fixtures in living rooms, bedrooms, and hallways. Its flexibility simplifies routing through ceiling cavities and wall studs, supporting multiple fixtures on a single circuit (e.g., 6–8 LED lights drawing 2A total).
General Power Outlets: 2.5mm² wires serve standard outlets in bedrooms, offices, and living areas, supplying TVs, laptops, and small appliances (e.g., blenders, toasters) with combined loads up to 25A.
Low-Power Appliances: 1.5mm² wires connect devices like chargers, table lamps, and fans, where current demands are minimal (≤16A).
H05V-K excels in concealed wiring behind walls or under floors, where dry conditions and moderate temperatures prevail. Its insulation is optimized for easy termination, reducing installation time for electricians.
H07V-K: Harsh or Damp Environments
High-Power Appliances: 4mm² wires handle electric water heaters, dishwashers, and ovens (30–32A), while 2.5mm² variants power air conditioners and washing machines in utility rooms.
Semi-Outdoor Areas: Suitable for garages, workshops, and covered patios, where exposure to dust, moisture, or temperature fluctuations is common. The 4mm² size can supply power to garage door openers, power tools, or outdoor grills.
Damp Locations: Approved for bathrooms (with proper enclosure) and basements, the 2.5mm² H07V-K wires connect exhaust fans, heated towel rails, and sump pumps, resisting humidity-induced degradation.
H07V-K’s enhanced heat resistance makes it ideal for installations near boilers, radiators, or attics, where temperatures may exceed 70°C.
Cross-Application Versatility
Light Commercial Spaces: Offices and retail stores utilize 2.5mm² and 4mm² wires for workstations, POS systems, and HVAC units, ensuring reliable power for daily operations.
3. Material and Design Features
The performance of H07V-K and H05V-K wires stems from their high-quality materials and intentional design, balancing conductivity, flexibility, and protection to meet EN 50525 standards.
Copper is selected for its exceptional conductivity, ensuring efficient power transmission with minimal energy loss—a critical factor for long wire runs in houses. The stranded design offers superior flexibility compared to solid cores, allowing easy navigation through tight spaces, such as between wall studs or around plumbing pipes. This flexibility reduces installation time and minimizes the risk of conductor damage during routing.
Copper’s natural corrosion resistance, combined with the protective PVC insulation, ensures long-term performance in humid environments. The helical twisting of strands distributes stress evenly, preventing individual strands from breaking under repeated bending or vibration—common in busy households.
PVC Insulation
The insulation is a specially formulated PVC compound, with additives tailored to each wire type:
PVC provides a robust barrier against electrical leakage, with its high dielectric strength preventing short circuits even when in contact with metal studs or moisture. Its flame-retardant properties, achieved through 添加 halogenated additives, slow fire spread and reduce toxic fume emission—critical for residential safety.
Structural Design
The wires feature a compact, uniform profile, with insulation bonded tightly to the conductor to prevent slippage or moisture ingress. This bonding ensures the insulation remains intact during stripping and termination, maintaining electrical safety. The outer surface of the insulation is smooth, reducing friction during installation and allowing easy pulling through conduits.
4. Manufacturing Process
The production of H07V-K and H05V-K wires adheres to strict quality controls, following EN 50525 standards to ensure consistency and reliability. The process involves several precision stages:
Conductor Formation
High-purity copper cathodes are melted and cast into rods, which are drawn through diamond dies to form thin strands (0.25mm–0.5mm). These strands are then twisted in a stranding machine, with the number of strands varying by wire size. The twisting process is computer-controlled to ensure uniform tension, preventing strand breakage and ensuring flexibility.
Insulation Extrusion
The
Stranded Conductor is fed into an extrusion line, where molten PVC (heated to 180–200°C) is applied uniformly around it. The extrusion die is calibrated to achieve precise insulation thickness—0.6mm to 0.9mm, depending on wire type and size. H07V-K insulation undergoes additional processing with heat stabilizers, while H05V-K receives plasticizers for flexibility.
The
Insulated Wire is cooled in a water bath to solidify the PVC, then dried to remove surface moisture. Online laser gauges monitor insulation thickness and diameter, ensuring compliance with specifications.
Quality Testing
Each batch undergoes rigorous testing:
Wires passing all tests are spooled onto reels for distribution.
II. General Product Information
1. Packaging
The wires are packaged to protect against damage during storage and transportation, while facilitating easy handling for builders, electricians, and distributors.
Reel Packaging
Wires are wound onto plastic or wooden reels, available in lengths of 100m, 250m, 500m, and 1000m:
Reels feature flanges (200mm–400mm diameter) to prevent wire slippage, with a central core compatible with
Standard Cable dispensers. Each reel is labeled with:
Protective Wrapping
Reels are wrapped in transparent polyethylene film to shield against dust, moisture, and UV light. For outdoor storage, an additional layer of waterproof kraft paper is applied, with a moisture indicator strip to alert users to water exposure. Large reels (500m+) are shrink-wrapped onto pallets to prevent movement during transit.
2. Transportation
The wires are transported using methods that ensure they reach customers in optimal condition, with protocols tailored to their size and destination.
Road Transport
For domestic shipments, reels are transported by trucks with enclosed trailers to protect against weather. Small reels (100m–250m) are packed into cartons with foam inserts, while large reels are secured to pallets with ratchet straps. Drivers receive training to handle heavy loads, ensuring reels are not dropped or tilted beyond 30°—preventing wire tangling.
Sea and Air Transport
International shipments use 20ft or 40ft containers. Reels are stacked vertically, with wooden dunnage between layers to prevent friction. Desiccants (1kg per 10m³) absorb moisture, and temperature loggers maintain conditions between -5°C and +35°C. Air freight is used for urgent orders, with small reels (≤250m) packed into crates weighing ≤30kg to meet airline restrictions.
Handling Guidelines
Upon delivery, recipients should inspect reels for damage (e.g., cracked flanges, torn wrapping). Wires must be stored in a dry, ventilated area, with reels elevated on pallets to avoid ground moisture. When unwinding, reels should rotate on a dispenser to prevent twisting, which could damage insulation.
3. Shipping and Delivery
The company offers flexible shipping options to meet project deadlines, with streamlined processes for order processing and tracking.
Order Processing
Wholesale and retail orders are processed within 24 hours. In-stock items (e.g., 1.5mm² H05V-K) ship immediately, while custom lengths require 3–5 business days. A dedicated account manager provides order confirmations with details, estimated delivery dates, and tracking numbers.
Delivery Timeframes
Expedited shipping is available for a 30% premium, with domestic delivery within 24 hours and international air freight within 48 hours.
Shipping Costs
Costs vary by weight, destination, and method:
Orders over $5,000 qualify for free domestic shipping, with volume discounts for contractors (10% off orders over 10,000m).
4. Sample Provision
To assist customers in evaluating quality, free samples are available, with nominal shipping fees.
Sample Request Process
Customers can request samples via the website, email, or phone, specifying wire type, size, and length (up to 5m). Samples are processed within 24 hours, with a \(20–\)50 shipping fee (refundable on first order over 100m).
Sample Contents
Each sample package includes:
Samples ship via DHL/FedEx, with tracking provided.
5. After-Sales Service
Comprehensive after-sales support ensures customer satisfaction, with services tailored to builders, electricians, and homeowners.
Technical Support
A team of EN 50525-certified engineers offers 24/7 assistance:
Warranty Coverage
A 20-year warranty covers manufacturing defects:
The warranty excludes damage from improper installation (e.g., exceeding temperature limits) or external factors (e.g., rodent bites, chemical exposure beyond specifications).
Claims Process
To file a claim, customers provide proof of purchase, photos of defects, and installation details. Claims are reviewed within 48 hours. Approved claims receive replacements or refunds, with expedited shipping for urgent cases.
Feedback and Improvement
Customer feedback is collected via surveys and account reviews. Insights drive improvements, such as enhancing H07V-K’s UV resistance or simplifying reel labeling for faster identification.
Conclusion
The 450/750V H07V-K and H05V-K electrical wires stand as high-quality solutions for house building and electrical supply, combining precise engineering, versatile performance, and strict compliance with EN 50525 standards. Their stranded
Copper Conductors, durable PVC insulation, and tailored temperature resistance make them suitable for diverse indoor and semi-outdoor applications, from lighting circuits to high-power appliances.
Supported by robust packaging, flexible shipping, and comprehensive after-sales service, these wires offer reliability and efficiency for builders, electricians, and homeowners. Whether in new construction or renovations, they ensure safe, long-lasting power distribution—solidifying their role as essential components in modern electrical infrastructure.
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