what is rvv cable

_{RVV Cable is also a kind of cable, commonly known as sheathed wire. The full name of RVV wire is copper core PVC insulated PVC sheathed flexible electrical wire, also known as light PVC sheathed flexible wire, commonly known as soft sheathed wire, which consists of two or more rv wires in a sheath constitute. Mainly used in electrical appliances, instruments and electronic equipment and automation devices with power lines, control lines and signal transmission lines, specifically for anti-theft alarm systems, building intercom systems, etc.}

_{2. the meaning of the letters:}

_{(1). The letter R stands for soft wire;}

_{(2). The letter V stands for insulator polyvinyl chloride (PVC)}

_{(3). RVV wires are the most commonly used cables in weak current systems. The number of core wires is indeterminate, two or more, and there is a PVC sheath on the outside. There is no special requirement for the arrangement between the core wires.}

_{3. the role of the sheath}

_{For example: rvv 2*0.5 is two 0.5 square millimeter lines plus a layer of outer sheath. The function of the sheath is:}

_{(1). Protect the inner sheath of the cable from mechanical damage and chemical corrosion;}

_{(2). Enhance the mechanical strength of the cable.}

_{4. Types of sheathed electrical wires: flame retardant type, low smoke and low halogen type, fire resistant type.}

_{(1). The characteristics of the flame retardant type are that the cable is not easy to catch fire or the combustion will be limited to a small range, which is suitable for occasions with high flame retardant performance requirements.}

_{(2). The fire-resistant type can maintain normal operation for a certain period of time in the state of fire in addition to working in normal environment.}

_{(3). The low-smoke and low-halogen type has the characteristics of low-smoke and low-halogen. Specifically, it means that it releases very little harmful gas and black smoke during combustion, which can improve the safety rate of fire escape and firefighting.}

_{5. Application}

_{RVV cables are mainly used in flexible use places such as medium and light mobile appliances, instrumentation, household appliances, and power lighting. They can transmit control signals and power signals, and are also suitable for laying in bridges and hoses.}