RVS Twisted PVC Insulated Cable 2-Core Stranded Copper, 250V/300V Rated for Pendant Light
RVS stands for R-Flexible Cord, V-PVC Insulation, S-Twisted Pair. It is commonly known as a 'twisted pair' flexible cable. The cores are twisted together rather than laid in parallel, which is a key distinguishing feature.
Specifications & Product Features
1. Conductor:
- Material: Plain annealed copper.
- Type: Finely stranded (Class 5/Class 6), making it highly flexible.
2. Insulation & Structure:
- Individual Core Insulation: PVC, typically in white/red, black/red, or other contrasting color pairs.
- Key Structural Feature: The two insulated conductors are twisted together (stranded) at a regular pitch. There is no outer protective sheath covering the pair.
- This 'twisted pair' design is the defining characteristic of RVS.
3. Voltage Rating:
- Standard Rating: 300/300V. It is designed for extra-low voltage and control/signal circuits, not for main power distribution.
4. Temperature Rating:
- Operating Temperature: Usually -30°C to +70°C.
5. Common Cross-Sectional Areas:
- Common sizes: 0.5mm², 0.75mm², 1.0mm², 1.5mm², 2.5mm².
6. Standards:
- Primary Standard: JB/T 8734.3 (China) – often replacing the older RVS standard.
- Functionally similar to harmonized codes like H03VH-H in European standards.
Key Advantages
Excellent Flexibility: The fine stranding and lack of a rigid outer sheath make it extremely pliable and easy to route in tight spaces.
- Twisted Pair Benefits: The twisting provides a degree of resistance to external electromagnetic interference (EMI) and helps reduce crosstalk between the pair, which is crucial for signal integrity.
- Cost-Effective: Its simple construction (no sheath, no shielding) makes it a very economical choice for low-voltage signaling.
- Easy Identification & Termination: The two cores are distinctly colored and twisted, making polarity identification and connection straightforward. The lack of a sheath also makes stripping and termination quick.
- Lightweight: Ideal for applications where cable weight is a consideration.
Primary Applications
RVS is exclusively used for low-voltage control, signaling, and communication circuits. It is NOT a power cable for mains electricity (e.g., sockets, lighting).
1. Fire Alarm Systems:
- The most classic and critical application. Used extensively for connecting smoke detectors, manual call points, sounders, and control panels within fire alarm loops. The twisting helps maintain signal integrity.
2. Intercom & Doorbell Systems:
- Standard wiring for connecting doorbell buttons, audio speakers, and video modules in residential and building intercom systems.
3. Building Automation & Control Wiring:
- Used for connecting sensors, thermostats, and actuators in HVAC, lighting control, and other low-voltage control systems.
4. Simple Public Address (PA) / Background Music Systems:
- For connecting speakers in low-power, constant-voltage (e.g., 70V/100V line) audio systems.
5. Low-Speed Data/Communication:
- Can be used for simple on/off signaling, burglar alarm contacts, or other two-wire communication where basic noise immunity is sufficient.
Crucial Comparison: RVS vs. RVV
Feature | RVS Cable (Twisted Pair) | RVV Cable (Sheathed Cord) |
|---|
Structure | Two insulated cores twisted together. NO outer sheath. | Multiple parallel cores bundled inside a PVC outer sheath. |
Protection | Minimal; for protected, dry indoor environments only. | Good mechanical protection from the outer sheath. |
Primary Use | Low-voltage signaling & control (Fire alarms, intercoms). | Light-duty power & control (Appliance cords, internal wiring). |
Voltage | 300/300V (Signal/Control Level). | 300/500V or 450/750V (Power Level). |
Flexibility | Extremely high. | Flexible, but sheath adds some stiffness. |
Environment | Must be installed inside conduit, trunking, or control panels. | Can be used in lightweight exposed runs (clipped to surface). |
Important Limitations & Warnings
NOT A POWER CABLE: RVS is absolutely not suitable for mains voltage power connections (e.g., 120V/230V AC for appliances or lighting). Using it for such purposes is a serious fire and safety hazard.
- No Outer Sheath: The lack of a sheath means it must be installed inside a protective conduit, trunking, or enclosed control panel. It cannot be run exposed on walls or surfaces.
- Indoor Use Only: It is not waterproof, UV resistant, or suitable for outdoor, damp, or harsh environments.
- Unshielded: While twisting helps, it is not a shielded cable. For environments with high EMI (e.g., near large motors, VFDs), a shielded data cable (e.g., RVVP) is required.
Summary: RVS is a specialized, unsheathed, twisted-pair cable designed specifically for reliable, low-voltage signal transmission in control and alarm systems. Its hallmark is the twisted pair construction, and its most critical application is in fire alarm system wiring. Always ensure it is installed in protected pathways and used only for its intended low-voltage purposes.
Package and Shipment
FAQS:
Q1: Are you a factory or trading company?
A1: We are a manufacturer.
Q2: Where is your factory located? How can I visit there?
A2:Our factory are located in jieyang city. You can fly to Shenzhen or Guangzhou international airport. And tell us your flight No. We will arrange to pick you up.
Q3: How can I get a sample to test your quality?
A3:We can provide free samples for your test and checking, you just need to bear the freight charge.
Q4:What payment method do you accept?
A4:T/T(Bank transfer), Western Union, Money Gram, Paypal, etc.
Q5: Can you put my brand name (logo) on these products?
A5: Yes! The professional OEM services will be welcomed to us. Our factory accepts to make the logo free for bulk orders.
Q6: May I know the status of my order?
A6: Yes .The order information and photos at different production stage of your order will be sent to you and the information will be updated in time.
Q7: What’s the leading time? (How long do you need to prepare my goods?
A7: Delivery (no more than 1000pcs) will be arranged within 10-15 days after payment, and arrive you within about 1 month via sea shipping.
Q8: How will you deliver my goods to me?
A8 Your purchases will be delivered by DHL, UPS, FedEx, TNT, EMS your door. Air Cargo and Sea Cargo, Direct line, Air Mail also be accepted according to clients' request.
Q9: Can you provide us more other products to us to help us to save more shipping costs?
A9: Yes. There’re kinds of Indoor Cables, Outdoor Cables, Coaxial Cables, Telephone Cables, Fiber Optic Cables and Accessories will be the main products line of Factory.
The OEM bulk order will be accept as well.
0086-755-23002989
info@hotonlink.com
hotonlink
0086-18123718803
Room 506, 5th floor No.48 Huaide South Road,Cuigang Industrial Zone 4,Fuyong Street,Baoan Shezhen China 
