Overview
| Model NO. | NYY-Flex / VVR | Application | Industrial Machinery Connection，Switchboards & Power Panels，Building & Infrastructure |
| Voltage | Low Voltage | Conductor | Bare Copper |
| Insulation Material | PVC | Jacket | PVC |
| Material Shape | Round | Temperature |
-15°C~70°C
|
| Certification | ISO, CCC, CE, RoHS, VDE | Conductor Type | Class 5 Flexible Stranded |
| Brand | ZhongYI | Voltage Type | 0.6/1 kV |
| Company Name | ZHONGYI Cable Co., Ltd | CORE | 1,2,3,4,5 |
| Transport Package | Plastic Packaging and Cardboard Boxes | Specification | 1.5mm² – 400mm² |
| Origin | HEBEI China | Color | black |
NYY-Flex / VVR Cable Core Technical Specifications & Data Sheet
| Nominal cross-sectional area (mm²) | Common AWG | Conductor structure (No./single wire diameter mm) | Nominal insulation thickness (mm) | Average outer diameter (mm) | Max DC resistance of conductor at 20 ℃ (Ω/km) | Approx. weight kg/km |
|---|---|---|---|---|---|---|
| 1.5 | 16 | 30/0.25 (Class 5) | 0.8 | 6.2 | 13.3 | 65 |
| 2.5 | 14 | 49/0.25 (Class 5) | 0.8 | 6.8 | 7.98 | 82 |
| 4 | 12 | 56/0.30 (Class 5) | 1.0 | 8.2 | 4.95 | 118 |
| 6 | 10 | 84/0.30 (Class 5) | 1.0 | 9.0 | 3.30 | 154 |
| 10 | 8 | 80/0.40 (Class 5) | 1.0 | 10.8 | 1.91 | 235 |
| 16 | 6 | 126/0.40 (Class 5) | 1.0 | 12.4 | 1.21 | 342 |
Features
NYY-Flex / VVR vs RV-K Cable Comparison Table
| Model Code | International Standard Name | Conductor Type (IEC 60228) | Insulation Material & Temp | Best Use Cases & Advantages |
|---|---|---|---|---|
| VVR | Flexible PVC Power Cable (NYY-Flex Equivalent) | Class 5 (Fine Stranded Soft Wire) | PVC Insulation (70°C) | Highly flexible, economical choice for internal wiring of electrical machinery, cabinets, and light industrial circuits. |
| VV | Standard PVC Power Cable (NYY Equivalent) | Class 1 (Solid) or Class 2 (Rigid Stranded) | PVC Insulation (70°C) | Rigid structure, tailored for permanent fixed installations like underground burial, brick walls, and concrete channels. |
| YJVR | Flexible XLPE Power Cable (RV-K Equivalent) | Class 5 (Fine Stranded Soft Wire) | XLPE Insulation (90°C) | Premium grade. High flexibility combined with 90°C thermal resistance. Delivers higher current-carrying capacity for heavy industries. |
Cost-Effective Durability: Built with high-grade dual PVC layers (insulation and jacket), offering a highly durable and economical power solution.
High Flexibility: Employs Class 5 fine-stranded pure copper conductors, allowing effortless bending and routing in restricted electrical channels.
Flame Retardant: Formulated with self-extinguishing PVC materials to prevent secondary fire hazards during operation.
Easy Installation: Flexible structure drastically reduces installation time and effort compared to rigid PVC power cables (like VV).
Application
Industrial Machinery Connection: Perfect for flexible power supply links inside heavy plant equipment, factory production lines, and machinery rooms.
Switchboards & Power Panels: Widely used for dynamic electrical wiring within low-voltage control cabinets and power distribution boards.
Building & Infrastructure: Ideal for indoor electrical trunking, cable trays, and ducts in commercial buildings, hotels, and warehouses.
General Power Extensions: Suitable for temporary or fixed power hookups where easy handling and reliable 0.6/1kV power delivery are critical.
Certification
Factory
FAQ
1. What is the explicit technical distinction between VVR (NYY-Flex) and standard VV (NYY) cables?
Core Flexibility & Structural Mechanics:
While both variants are engineered as 0.6/1kV PVC insulated and sheathed power wires, they serve entirely different deployment pathways. The standard VV (or NYY) cable utilizes a rigid Class 1 solid or Class 2 rigid stranded conductor, tailored strictly for static, permanent fixed wiring inside brick walls or concrete channels. Conversely, our VVR (NYY-Flex) cable is designed exclusively with high-strand Class 5 fine bare copper, rendering it exceptionally pliable and highly resistant to mechanical vibration inside automated factory production systems.
2. Why is a Class 5 fine-stranded conductor configuration crucial for industrial machinery connection?
Dynamic Stress Reduction & Effortless Routing:
Industrial electrical panels and heavy-duty machinery enclosures are intensely congested, requiring complex, tight-radius routing. Our NYY-Flex / VVR cable utilizes a high count of thin, annealed copper wires (such as 30/0.25 for 1.5mm²) to form a Class 5 flexible conductor matrix. This structural layout significantly decreases the internal minimum bending radius and eliminates spring-back rebound during construction, preventing localized mechanical fatigue at termination terminals and cutting on-site installation hours by half.
3. What type of polymer engineering safeguards the NYY-Flex cable against factory oil and chemicals?
Dual PVC Layer Shielding & Thermal Limits:
Industrial factory floors are highly prone to chemical runoffs, grease, and continuous ambient moisture. To secure a long-term operational lifespan exceeding 30 years, our VVR cables feature an advanced dual-layer composition of high-grade Polyvinyl Chloride (both for the internal core insulation and the outer protective jacket). This heavy-duty compound provides excellent resistance against non-corrosive oils and industrial chemicals, operating seamlessly within a continuous thermal range of -15°C to 70°C, and managing emergency short-circuit temperatures up to 160°C.
4. Does ZHONGYI CABLE guarantee 99.99% pure copper conductivity for heavy-current power loops?
Premium Metallurgical Metallurgy & Low Resistance:
Yes. Unlike low-grade recycled copper or CCA alternatives that lead to excessive voltage drops and catastrophic thermal build-up under full load, our NYY-Flex cables are manufactured using exclusively 99.99% pure, oxygen-free electrolytic copper. Meeting rigid IEC 60228 resistance benchmarks (such as ≤ 13.3 Ω/km for 1.5mm² at 20°C), our conductors ensure maximum ampacity, zero hot-spots, and optimized electrical safety for high-load industrial distribution networks.
5. What wholesale cross-sections and project packaging logistics options do you support?
Industrial Supply Capacity & Global Compliance:
As a dedicated direct factory supplier, we manufacture VVR / NYY-Flex cables in multi-core clusters (spanning 1 to 5 cores) across standard cross-sectional profiles from 1.5 mm² up to 400 mm². To shield the delicate, high-flexibility jacket from structural tearing during maritime shipping transit, bulk orders are coiled in easy-pull plastic film and heavy-duty cardboard boxes, or wound on reinforced steel-wooden reels, fully backed by complete Type Test Reports, CE, and ISO certificates for seamless destination port clearance.
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