YJV and YJY cables are both cross-linked polyethylene insulated power cables, but the difference in sheath material is a key performance difference between the two:
YJV: The outer layer is a polyvinyl chloride (PVC) sheath, which contains halogen and offers high mechanical strength and flame retardancy.
YJY: The outer layer is a polyethylene (PE) sheath, which is halogen-free and low-smoke, offering excellent environmental performance, but slightly lower mechanical strength.
Application Scenario Showdown: Choosing the Wrong Model = Hidden Dangers
1. YJV's "Home Field Advantage"
Industrial Plants: Resistant to oil and mechanical damage (e.g., vehicle cables)
Underground Pipelines: PVC sheathing offers strong acid and alkali corrosion resistance
Non-critical Fire Protection Areas: General power distribution in areas not crowded with people
Risk Warning: Fires release dense smoke and toxic gases, making it prohibited for use in confined spaces such as subways and hospitals!
2. YJY's "Environmental Ace"
Green Buildings: LEED certification projects require low-smoke and halogen-free cables
Tunnels/Shipyards: Confined spaces require smoke and toxic gas dispersion control
Direct Burial: PE sheathing offers superior water resistance to PVC (no additional protective tube required)
Real-World Case Study: A data center using YJY cable reduced smoke density by 80% during a fire, increasing escape time by three times!
Analysis: Which is better, YJV or YJY?
1: Environmental Diagnosis
High Temperature/Corrosive Environments ➔ YJV (Stronger Chemical Resistance)
Wet/Direct Burial Installation ➔ YJY (Waterproof Laminated PVC)
2: Safety Compliance Review
GB/T 19666 stipulates that halogen-free cables must be used in crowded places.
EU Export Project: YJY meets CPR B2ca-s1, d0, a1
3: Full-Life Cycle Costing
Tight Initial Budget ➔ YJV (20% Cost Savings)
Sensitive Operations and Maintenance ➔ YJY (Reduces Fire Cleanup Costs)
4: Suitable Installation Methods
Frequent Bending and Movement ➔ YJV (Tensile Strength of 16 N/mm²)
Fixed Installation + Environmentally Friendly ➔ YJY (Up to 30 Years of Life)
