TRVVSP Composite shielding Drag Chain Cable

Designed Specifically for Modern Elevator Communication:  
Physically optimized for modern elevator control system communication protocols such as CAN bus, Ethernet, RS-485, etc., reducing bit error rates and improving communication reliability.  
Maintaining the Mechanical Characteristics of Elevator Cables:  
Features ultra-flexible conductors, tensile elements, and a design resistant to reciprocating bending, adapting to vertical motion.  
Application Scope: Used as traveling cables for transmitting critical control bus signals and sensitive data in mid-to-high-end elevator and lift systems equipped with digital, networked control systems, where communication reliability and real-time performance are strictly required.

Conductor: Class 6 annealed copper conductor (multi-strand ultra-fine copper wires). Cross-sectional range: 0.5 mm² to 2.5 mm² (signal/control/communication), 4 mm² to 25 mm² (power).  
Insulation: Special flexible PVC, color-coded.  
Core Structure (Core Feature): Multi-core integration, including twisted pairs:  
• Power lines: May be a parallel structure.  
• Control/signal/communication lines: At least one or multiple groups use twisted pair structure (e.g., twisted pair), such as for:  
 - RS-485/CAN bus  
 - Encoder feedback  
 - Ethernet (requires specific category)  
 - Analog audio/intercom  
Tensile Element: Central or integrated aramid yarn or fiber rope, providing tensile strength.  
Filling: Non-hygroscopic filling material.  
Shielding Structure: Layered shielding:  
1. Individual shielding (possible): Critical twisted pairs may use independent aluminum foil shielding.  
2. Overall shielding: Uses tinned copper braided mesh or aluminum-plastic composite tape + braided mesh, coverage ≥85%.  
Sheath: High-strength, abrasion-resistant PVC, typically black or gray.  
Rated Voltage:300/500V.  
Long-term Operating Temperature:-15°C to +70°C (mobile installation).  
Minimum Bending Radius: Mobile installation: 10 × D (D: cable outer diameter).