1. What is TRVVP Cable?
TRVVP stands for Copper Conductor, PVC Insulated, PVC Sheathed, Shielded Flexible Drag Chain Cable. It is a medium-flexibility, double-sheath shielded drag chain cable. The cable is specifically engineered for moving installations that involve frequent bending and repeated flexing, and it is typically placed inside cable carriers (drag chains) for protection and guided movement.
A critical distinction must be made between TRVVP and the commonly used RVVP shielded cable. While both feature shielding for EMI protection, they serve fundamentally different purposes:
RVVP is a standard shielded cable designed for fixed installations only. It cannot be used in moving applications, as the conductors will eventually break under repeated flexing.
TRVVP, by contrast, is purpose-built to solve the challenge of "shielding in motion" -maintaining signal integrity while the cable undergoes continuous movemen.
3. Key Technical Parameters
| Parameter | Specification |
|---|---|
| Rated Voltage (U₀/U) | <0.5mm²: 300/300V; ≥0.5mm²: 300/500V |
| Test Voltage | 2000V (for ≥0.5mm²) |
| Conductor Standard | VDE 0295 / IEC 60228 Class 6 |
| Shield Coverage | 70% – 85% braided density |
| Bending Radius (Fixed) | 5 × Cable Outer Diameter |
| Bending Radius (Moving, <10m travel) | 7.5× – 8× Cable Outer Diameter |
| Bending Radius (Moving, ≥10m travel) | 10× Cable Outer Diameter |
| Operating Temp (Fixed) | -30°C to +70°C |
| Operating Temp (Moving) | -15°C to +70°C |
| Maximum Travel Speed | 5 m/s |
| Maximum Acceleration | 20 m/s² |
| Maximum Travel Distance | 50 m |
| Bending Cycle Life | >4 million to >5 million cycles |
| Flame Retardancy | IEC 60332-1 / VDE 0482 |
| Core Identification (<0.5mm²) | Color-coded (brown, black, blue, purple, pink, orange) |
| Core Identification (≥0.5mm²) | Black with white numbers; 3+ cores include green/yellow earth |
4. Application Scenarios
TRVVP cable is designed for continuous motion and frequent bending in industrial environments. Typical applications include:
Industrial Machinery & Automation
CNC machine tools
Robotic systems and manipulators
Servo and encoder systems
Packaging machinery
Woodworking and stone processing equipment
Injection molding machines
Material Handling & Logistics
Conveyor systems and logistics equipment
Automated warehouses
Crane and hoist systems
Other Industrial Applications
Automotive manufacturing plants
Heavy machinery and construction equipment
Port and terminal equipment
Building and metal stamping machinery
The cable is suitable for both indoor and outdoor environments, including damp or wet conditions, thanks to its water-resistant and UV-resistant properties.
5. Selection and Installation Guidelines
Conductor Size and Core Count
TRVVP cables are available in conductor sizes from 0.08mm² to 35mm² and core counts from 2 to 65 cores. Select based on current-carrying requirements and the number of signals or circuits to be transmitted.
Shielding Requirements
For environments with high electromagnetic interference (e.g., near motors, drives, or welding equipment), the 80%+ braided shield provides effective protection. For less demanding environments, unshielded variants (TRVV) may be sufficient.
Installation Best Practices
Avoid twisting: Cables should be unrolled from the drum by rotating the drum, not by pulling from the side.
Respect minimum bending radii: Exceeding the specified minimum bending radius will significantly reduce cable life.
Proper fixing: The cable should be secured at both ends of the drag chain, with the middle section free to move.
No external tension: The cable should not bear tensile loads; the drag chain itself should absorb mechanical forces.
Key Differentiator – TRVVP vs. RVVP
When specifying cables, remember: TRVVP is for moving applications; RVVP is for fixed installations. Using RVVP in a drag chain will result in premature conductor failure, while using TRVVP in a fixed installation is unnecessarily costly.
6. Conclusion
TRVVP cable represents a specialized solution for the demanding requirements of modern industrial automation. Its combination of ultra-fine stranded copper conductors, flexible PVC insulation, high-coverage braided shielding, and durable oil/water/UV-resistant sheath makes it the cable of choice for drag chain systems, robotic applications, and any environment requiring reliable signal transmission under continuous motion.
When selecting cables for your next automation project, ensure you choose TRVVP for moving, shielded applications-and leave RVVP for fixed installations where it belongs.
FAQ
1. What does TRVVP stand for, and how is it different from RVVP?
TRVVP stands for Copper conductor, PVC insulated, PVC sheathed, shielded flexible drag chain cable. The key difference from RVVP is that TRVVP is designed for moving applications (drag chains, robots) with Class 6 ultra‑fine stranded conductors, while RVVP is for fixed installations only and cannot withstand continuous bending.
2. What are the voltage and temperature ratings?
Rated voltage: 300/300V for conductors <0.5mm²; 300/500V for ≥0.5mm².
Operating temperature: -15°C to +70°C (moving); -30°C to +70°C (fixed).
Test voltage: 2000V for ≥0.5mm².
3. What bending radius and cycle life can I expect?
Minimum bending radius (moving): ≥7.5× cable OD for travel <10m; ≥10× for ≥10m.
Bending cycle life: typically over 4 million cycles (up to 5 million+), depending on installation conditions.
4. What applications is TRVVP cable used for?
It is ideal for continuous motion environments, including:
CNC machine tools and robotic arms
Automated material handling and conveyor systems
Servo and encoder connections
Packaging, woodworking, and injection moulding machinery
Any application requiring reliable signal transmission under repeated flexing.
5. What is the shielding construction and what does it protect against?
The shield is a braided copper or tinned copper mesh with 70–85% coverage density. It effectively blocks electromagnetic interference (EMI) from motors, drives, and welding equipment, ensuring signal integrity in electrically noisy industrial environments.
If you have any needs, please feel free to contact us
cable@sxwqgb.com
+86 13892838980
Room 3404, Runfeng Building, Sanqiao Street, Fengdong New City, Xi 'an, Shaanxi Province
