You'll see the words "YJVR" on the outer sheath of some cables. We all know that the printed designations on products indicate product information, and these four letters also carry information about the cable. So what does "YJVR" cable mean? What kind of cable is "YJVR"? Here's a brief introduction that we hope will be helpful.
In cables, "YJVR" stands for the cable model. Each letter carries different information, so breaking it down into its parts will provide a clearer understanding.
YJ: The cable's insulation material is "cross-linked polyethylene," the plastic material that wraps the copper wire. Cables with cross-linked polyethylene insulation have higher heat resistance than polyvinyl chloride (PVC). They can operate for long periods at 90°C and withstand short-circuit temperatures up to 250°C. They also have high insulation resistance, a low dielectric loss tangent, and are essentially invariant to temperature fluctuations. They also offer excellent wear resistance and resistance to environmental stress.
V: The cable's outer sheath is made of "polyvinyl chloride," commonly known as PVC. PVC cables offer excellent electrical properties, corrosion resistance, mechanical strength, and abrasion resistance. It's inexpensive, easy to install, and offers excellent signal transmission performance, while also being environmentally sustainable.
r: R stands for soft-core cable, meaning the cable's conductor is made of fine, soft copper wires twisted together (like the multiple strands in your phone charging cable). This makes the cable flexible and allows for bendability and mobility.
yjvr stands for copper-core, cross-linked polyethylene-insulated, PVC-sheathed power cable. Since the model number doesn't include a letter indicating the conductor, copper is assumed. yjvr cable is used for power transmission and is suitable for AC transmission and distribution lines with rated voltages U0/U of 0.6/1kV and below, requiring very high flexibility. The cable conductor has a maximum rated temperature of 70°C. During a short circuit (lasting no longer than 5 seconds), the maximum temperature of the cable conductor does not exceed 160°C. The ambient temperature during cable installation must be at least 0°C, and the bending radius should be at least 10 times the cable's outer diameter.
