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PVC Insulated Japanese Flat Twin Wire
For electrical wiring applications requiring a reliable, space-saving solution, the PVC Insulated Japanese Flat Twin Wire offers a proven and versatile option. This cable type is widely recognized for its compact, flat design, which facilitates neat installation in conduits and tight spaces where traditional round cables might be problematic. The design, commonly referred to in specifications as Japanese VFF Flat Twin Core Wire, features two parallel conductors insulated with durable PVC and bonded side-by-side. This construction, also known as Japanese VHF PVC Insulated Flat Cable, provides excellent electrical isolation and mechanical protection. The popularity of this Japanese Style Double Core Flat Wire stems from its efficiency in internal building wiring, lighting circuits, and appliance connections. As a specific standard, the VFF Double Core PVC Insulated Cable denotes a product built to meet rigorous performance criteria for voltage rating and safety.
The core advantage of the PVC Insulated Japanese Flat Twin Wire lies in its detailed construction and material specifications, which ensure consistent performance. The twin conductors are typically made from high-conductivity annealed copper, ensuring minimal electrical resistance and efficient power transmission. These are individually insulated with a layer of polyvinyl chloride (PVC) formulated for specific electrical and environmental properties. The insulated conductors are then fused together in a parallel flat formation using a second layer of PVC sheathing. This final outer jacket provides overall mechanical strength, protection against abrasion, and resistance to moisture, oils, and common chemicals. The flat profile of the <产品名字> is not just for space efficiency; it also prevents twisting during installation and allows for better heat dissipation compared to some bundled round cables.
Key Specifications & Technical Data
- Conductor: Plain annealed copper, compliant with relevant standards.
- Insulation: PVC compound, color-coded for phase identification.
- Jacket/Sheath: Overall PVC sheath bonding the insulated cores.
- Voltage Rating: Typically 300/500V for general-purpose applications.
- Temperature Rating: Operational range usually from -10°C to +70°C.
- Standards: Manufactured to meet JIS C 3306, VFF, or equivalent specifications.
- Applications: Internal wiring for lighting, power outlets, control panels, and domestic appliances.
| Nominal Cross-Sectional Area (mm²) | Approx. Overall Dimensions (Width x Thickness) mm | Approx. Conductor Resistance at 20°C (Ω/km) | Max. DC Resistance at 20°C (Ω/km) |
|---|---|---|---|
| 0.75 | 4.2 x 2.0 | 24.5 | 24.8 |
| 1.25 | 5.0 x 2.2 | 14.8 | 15.0 |
| 2.0 | 5.8 x 2.6 | 9.39 | 9.51 |
Performance & Testing Parameters
| Test Parameter | Standard Requirement / Typical Value | Test Method / Condition |
|---|---|---|
| Insulation Resistance | > 0.0067 MΩ·km | Measured at 20°C, immersed in water |
| Voltage Test | 2000V AC for 1 minute (or 2500V for 1 min) | Between conductors and from conductor to water |
| Insulation & Sheath Thickness | Meets nominal and minimum values per standard | Measured by micrometer at multiple points |
| Tensile Strength & Elongation | PVC Insulation: > 12.5 MPa & > 125% PVC Sheath: > 10.0 MPa & > 150% |
Tested on dumb-bell specimens |
| Heat Shock Test | No cracks or visible damage | Conditioned at 150°C for 1 hour, mandrel test |
| Flame Retardancy | Self-extinguishing | Vertical flame test as per applicable standard |
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