ZRYJV cable is a versatile and high-performance flame-retardant PVC insulated and sheathed power cable, conforming to the JB/T 10438 standard. Designed for fixed installations, it is extensively used in power transmission and distribution networks, industrial plants, infrastructure projects, and commercial buildings where reliable performance and enhanced safety are paramount.
The "ZR" designation indicates its flame-retardant properties, meaning it is engineered to inhibit the propagation of flame along the cable length, contributing to improved fire safety in case of an electrical fault. This makes ZRYJV an excellent choice for installations in vertical shafts, crowded ducts, and public spaces where fire safety regulations are stringent.
Its robust construction ensures excellent resistance to mechanical stress, abrasion, and common environmental factors, providing long-term reliability and stable electrical performance.
The following tables outline the core technical parameters for standard ZRYJV cable configurations.
| Conductor Type | Material | Standard | Remarks |
|---|---|---|---|
| Class 1 / Class 2 | Plain Annealed Copper | GB/T 3956 | Class 1 for solid, Class 2 for stranded. |
| Component | Material | Color | Thickness |
|---|---|---|---|
| Insulation | Flame Retardant PVC (ZR-PVC) | Phase: Red, Yellow, Blue / Neutral: Blue / Earth: Green-Yellow | As per rated voltage and conductor size. |
| Sheath (Outer Cover) | Flame Retardant PVC (ZR-PVC) | Typically Black or Grey | Nominal: 1.5mm (for example) |
| Parameter | Value / Standard | Test Condition |
|---|---|---|
| Rated Voltage (U0/U) | 0.6/1 kV | - |
| Max. Operating Temperature | 70°C | Conductor in continuous operation. |
| Short-Circuit Temperature | 160°C | Max duration 5 seconds. |
| Min. Bending Radius | 15 x Cable Diameter (Installation) 12 x Cable Diameter (Fixed) |
During installation and in fixed position. |
| Flame Retardancy Test | IEC 60332-1 (Single vertical wire test) | Meets requirements for flame propagation. |
For optimal performance and safety, ZRYJV cables should be installed by qualified electricians in accordance with local electrical codes and regulations, considering factors such as ambient temperature, grouping, and load capacity.