In low‑voltage power distribution projects, VV cables and YJV cables are the two most commonly used types of power cables. Their core difference lies in insulation material, which directly affects heat resistance, safety, service life, and suitable application scenarios. Below is a comprehensive comparison to help you choose the right cable for your project.
1. Basic Definitions & Material Differences (Core Distinction)
Both cable types share the same outer sheath material: Polyvinyl Chloride (PVC). The only fundamental difference is the insulation layer.
|
Feature |
VV Cable |
YJV Cable |
|---|---|---|
|
Full Name |
Copper (or aluminum) conductor, PVC insulated, PVC sheathed power cable |
Copper (or aluminum) conductor, cross‑linked polyethylene insulated, PVC sheathed power cable |
|
Insulation Material |
Standard PVC (thermoplastic) |
Cross‑Linked Polyethylene (XLPE) |
|
Molecular Structure |
Ordinary, less stable |
Chemically cross‑linked, more stable |
|
Performance Impact |
Average electrical performance, lower thermal stability |
Enhanced insulation, higher durability |
2. Key Performance Parameters
|
Parameter |
VV Cable |
YJV Cable |
|---|---|---|
|
Max Long‑Term Operating Temp. |
65°C |
90°C |
|
Short‑Circuit Withstand Temp. |
140–160°C |
Up to 250°C |
|
Voltage Range |
Low voltage only (1–6 kV) |
Wide range (1–500 kV) |
|
Insulation Stability |
Softens at high temp., ages faster |
Stable under heat, long‑term reliability |
|
Current Carrying Capacity |
Lower |
Higher (same size carries more current) |
3. Safety & Environmental Characteristics
VV Cable
-
PVC insulation contains chlorine.
-
Releases toxic hydrogen chloride gas when burned.
-
Produces heavy smoke and toxic fumes; poor flame retardancy.
-
Melts and drips at high temperatures, increasing fire hazard.
YJV Cable
-
XLPE insulation is halogen‑free.
-
Low smoke, no toxic or corrosive gases during combustion.
-
Excellent flame‑retardant properties.
-
Much safer in fire situations, compliant with modern building fire codes.
4. Service Life & Cost Efficiency
|
Aspect |
VV Cable |
YJV Cable |
|---|---|---|
|
Service Life |
~10–15 years |
~20–30 years |
|
Price |
Lower (simple process, cheaper raw materials) |
~10–20% higher (advanced process, better performance) |
5. Application Scenarios
VV Cable Applications
-
Low‑voltage, normal temperature environments.
-
Temporary wiring in older factories.
-
Outdoor simple low‑voltage lines.
-
Non‑crowded areas with minimal fire safety requirements.
-
Rarely recommended for new projects.
YJV Cable Applications
-
Mainstream choice for most formal power distribution works.
-
Ideal for residential buildings, offices, shopping malls, industrial plants, urban grids, underground utility tunnels.
-
Especially suited for densely populated spaces with strict fire safety standards.
6. Selection Summary
Choose VV if you need a low‑cost, temporary solution in mild conditions.
Choose YJV for permanent installations, higher safety demands, and compliance with modern fire regulations.
About Minfeng Cable Group
Founded in 2006, Minfeng Cable Group ranks among China’s Top 500 Machinery Manufacturers. With decades of expertise, we produce an extensive range of cable products covering hundreds of thousands of specifications, including but not limited to:
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KVVP shielded control cables
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ZR‑YJV22 armored power cables
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ZR‑BVR, RVS, RVV PVC insulated household wires
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YJLHV aluminum alloy cables
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BTTZ mining cables
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Overhead cables
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Fire‑resistant specialty cables
All products are manufactured in strict compliance with national standards, ensuring consistent quality and reliable performance. For safe, certified, and durable cable solutions—choose Minfeng Cable.
