Overview
| Model NO. | RVS Twisted Pair Cable | Application | Fire protection detector line, Automatic alarm system cable, Broadcasting, and Speaker wire |
| Voltage | LOW Voltage | Conductor | Copper |
| Insulation Material | PVC | Jacket | None |
| Material Shape | Round | Temperature |
-15 °C to 70 °C
|
| Certification | ISO, CCC, CE, RoHS, VDE | Conductor Type | Class 5 |
| Brand | ZhongYI | Voltage Type | 450/750V |
| Company Name | ZHONGYI Cable Co., Ltd | CORE | 2 |
| Transport Package | Plastic Packaging and Cardboard Boxes | Specification | 0.5–6 mm² |
| Origin | HEBEI China | Color | black and red |
| Nominal cross-sectional area (mm²) | Common AWG | Conductor structure (No./single wire diameter mm) | Nominal sheath thickness (mm) | Average outer diameter (mm) | Max DC resistance of conductor at 20 Ω/km |
Approx.weight kg/km |
| 2×0.5 | 24 | 28/0.15 | 0.8 | 5.5 | 40.1 | 23.5 |
| 2×0.75 | 22 | 24/0.20 | 0.8 | 6 | 26.7 | 30.2 |
| 2×1.0 | 20 | 32/0.20 | 0.8 | 6.8 | 19.5 | 37 |
| 2×1.5 | 18 | 42/0.20 | 0.8 | 7.5 | 13.3 | 49 |
| 2×2.5 | 16 | 78/0.20 | 0.8 | 8.8 | 7.98 | 71 |
Features
RVS Cable, officially known as Copper Conductor PVC Insulated Stranded Flexible Cord, is a classic twisted pair wire (often referred to as “fire cable” or “flower wire” in specific markets)
Comparison Table: RVS RVV BVR RVVB BV
| Model (CN) | International Name | Conductor Type | Shape & Structure | Best For (Buying Guide) |
|---|---|---|---|---|
| BV | Single-core Non-sheathed Rigid Cable | Class 1 Solid Copper (Single thick wire) | Round, Single Insulation layer, NO outer sheath | Fixed permanent conduit installation, house masonry wiring. |
| BVR | Single-core Flexible Conduit Wire | Class 2 Stranded Copper (Medium flex) | Round, Single Insulation layer, NO outer sheath | Switchboards, distribution boxes, and building wiring with slight curves. |
| RVV | Light/Ordinary PVC Sheathed Flexible Cord | Class 5 Fine-stranded (Highly flexible) | Round, Multi-core, Inner Insulation + Double Outer Sheath | Home electric appliances, power cords, CCTV security cameras, mobile tools. |
| RVVB | Flat PVC Sheathed Flexible Cord | Class 5 Fine-stranded (Highly flexible) | Flat parallel shape, Inner Insulation + Outer Sheath | Under-carpet wiring, surface extension cords, lightweight open installation. |
| RVS | Twisted Pair Flexible Wire (Fire/Audio Wire) | Class 5 Fine-stranded (Highly flexible) | Two insulated single wires twisted together, NO outer sheath | Fire alarm broadcasting systems, public audio, PA speaker cables. |
Twisted Structure: Effectively cancels out electromagnetic interference (EMI) for stable signal transmission.
High Flexibility: Stranded oxygen-free copper cores allow easy bending and routing in tight spaces.
Excellent Insulation: Premium flame-retardant PVC sheath ensures electrical safety and longevity.
Cost-Efficient: Highly economical solution for low-voltage power and control connections.
Application
Fire Alarms: RVS Cable Critical connections for automatic fire alarm and smoke detection systems.
Audio & PA Systems: Wiring for public address loudspeakers and home audio broadcasting.
Home Appliances: Power connection cords for small household appliances and lighting fixtures.
Control & Signaling: Low-voltage signal transmission in smart home and security systems.
Certification
Factory
FAQ
1. What is the explicit technical advantage of the twisted-pair structure in RVS cables?
Inherent EMI & Crosstalk Cancellation:
Our RVS cable features a precision-engineered helical twisted-pair configuration without an outer jacket. In fire automation networks and public broadcasting fields, parallel wires act as antennas, easily picking up severe electromagnetic interference (EMI) and radio frequency noise. By twisting the two insulated cores with a uniform pitch, external magnetic noise loops are mathematically cancelled out across alternating sections. This guarantees flawless, noise-free signal telemetry for critical smoke detectors and smart home automation arrays.
2. Why is a Class 5 fine-stranded copper conductor specified for fire alarm and speaker wiring?
Dynamic Pliability & Signal Integrity:
Fire alarm routing and complex public address (PA) speaker installations involve threading wires through intricate wall conduits, tight junction boxes, and ceiling voids. Our RVS fire cable resolves internal pathing fatigue by grouping 99.99% pure, oxygen-free electrolytic copper into high-strand Class 5 configurations. This ultra-fine structural layout dramatically minimizes the structural bending radius and eliminates rigid spring-back rebound, preventing localized snapping and lowering overall on-site deployment labor hours.
3. What does 'RVS' stand for under standard manufacturing coding nomenclature?
Nomenclature Structural Breakdown:
Under standard international cross-referenced wire coding frameworks (matching GB/T 5023 and equivalent low-voltage IEC guidelines), each character defines a specific engineering layer: ‘R’ signifies a highly flexible stranded soft conductor (Ruan); the first ‘V’ represents premium flame-retardant Polyvinyl Chloride (PVC) compound used for individual core insulation; and ‘S’ explicitly designates a twisted-pair parallel configuration (Shuangjiao). This unjacketed design maximizes handling flexibility for static fixed conduits.
4. How does the flame-retardant PVC formulation protect critical public emergency circuits?
Self-Extinguishing & Thermal Safety:
Because RVS cables connect automatic smoke detection loops and evacuation broadcasting grids, fire safety is the primary benchmark. Our PVC insulation compound is chemically embedded with high-grade fire suppressants, achieving strict compliance with IEC 60332-1 flame-retardant evaluation parameters. In a fire hazard, the wire insulation will not sustain combustion, is inherently self-extinguishing within seconds, and emits low, non-toxic translucent smoke to preserve visibility during dynamic building evacuations.
5. What wholesale core sizes and B2B logistics packaging choices does ZHONGYI CABLE guarantee?
Rigorous B2B Supply Logistics & Project Support:
As an established direct factory supplier, we engineer RVS twisted pair flexible cords across standard cross-sectional profiles from 0.5 mm² up to 6 mm² (covering standard 24 AWG to 10 AWG specifications). To shield the supple flexible insulated wire from mechanical fraying or stretching during international maritime sea freight transit, bulk wholesale orders are packed cleanly in 100-meter easy-pull plastic film coils boxed inside heavy-duty cartons or wound onto robust wooden reels, backed by complete Type Test Reports.
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