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In construction and manufacturing, CXV cable is an essential electrical solution. According to Ngoc Lan Cable’s survey, over 60% of technicians, students, and new investors in the electrical industry struggle to choose suitable cables due to lack of in-depth knowledge.
This article will address the following questions:
- What is CXV cable and how is it constructed?
- What are its technical specifications?
- How is it applied in practice?
1. What is CXV cable?
CXV cable (abbreviation for Cu/XLPE/PVC) is a commonly used cable type in low and medium voltage electrical systems. Here’s what each letter in CXV represents:
- C stands for Cu (Copper): The conductor core is made of pure copper (~99.99%)
- X stands for XLPE: The insulation layer is made from XLPE plastic.
- V stands for PVC: The outer sheath is made from PVC plastic.
CXV cables are classified into several types including 1-core, 2-core, 3-core, and 4-core. Below is the detailed structure of each low and medium voltage cable group by number of cores:
1.1 For single-core low voltage CXV cables (0.6/1kV):
- Class 2 copper conductor, circular compacted or concentric stranded.
- XLPE insulation layer
- PVC outer sheath
1.2 For 2, 3, 4-core low voltage CXV cables (0.6/1kV):
- Class 2 copper conductor, circular compacted or concentric stranded
- Phase identification color tapes:
- 2-core: Red, black
- 3-core: Red, yellow, blue
- 4-core:
- Phase cores: Red, yellow, blue.
- Neutral core: Black or no color marking.
- XLPE insulation layer.
- Round filler made of PP filling, binding tape or PVC.
- PVC outer sheath.
1.3 For single-core medium voltage CXV cables 1.8/3(3.6)kV:
- Class 2 copper conductor with concentric stranding
- XLPE insulation layer
- PVC outer sheath
1.4 For 3-core medium voltage CXV cables 1.8/3(3.6)kV:
- Class 2 copper conductor with concentric stranding
- Phase identification color tapes: Red, yellow, blue
- XLPE insulation layer
- Round filler made of PP filling, binding tape or PVC
- PVC outer sheath
For cables with 2 or more cores, an additional filler layer is added between the cores. This layer is typically made from PP plastic fiber along with wrapping tape or extruded PVC to give the cable a more rounded shape. Additionally, colored stripes (red, yellow, blue) are used to differentiate between phase cores, while black marking or no marking is used to identify the neutral core.
2. Technical characteristics and physical properties of CXV cable
In the wire and cable manufacturing industry, CXV cable is recognized as a superior technical solution with notable technical and physical characteristics:
2.1 Technical characteristics
CXV cables are designed to meet rigorous international technical standards:
- Clear nominal voltage classification: 0.6/1kV for low voltage and 1.8/3(3.6)kV for medium voltage, ensuring precise application for each voltage level
- High electrical endurance demonstrated by 50Hz voltage test capability for 5 minutes at 3.5kV (low voltage) and 6.5kV (medium voltage)
- Maximum nominal operating temperature of 90°C and short-circuit thermal resistance of 250°C for 5 seconds, showing excellent thermal performance
2.2 Physical properties
The physical characteristics of CXV cables provide significant competitive advantages:
- Red copper core (~99.99%) ensures optimal and stable electrical conductivity under all operating conditions
- High-grade heat-resistant PVC sheath provides comprehensive protection against environmental impacts
- Fire-retardant additive technology in certain product lines enhances safety
- Excellent mechanical durability with good impact resistance in harsh environments
These technical and physical properties establish CXV cable as a professional, reliable, and safe electrical solution.
3. Applications of CXV cable in the electrical industry
In the context of modern technological development, CXV cable has established its essential role across many important sectors, from construction to industrial manufacturing:
- Installation of electrical systems in civil construction projects including residential buildings, offices, commercial centers, factories, and industrial facilities
- Used in construction projects, cable trays, cable troughs, wall-mounted or concealed conduits, sealed cable boxes, and underground ducts
- Applied in electronic and refrigeration equipment such as refrigerators, air conditioners, washing machines, and electric stoves
- Implementation in industrial manufacturing for machinery, production equipment, and assembly systems
With its superior technical advantages, CXV cable has become an indispensable solution in power and automation applications, contributing to improved efficiency and reliability of electrical systems across all sectors.
4. Important considerations when purchasing CXV cable
To select quality CXV cable, please consider the following factors:
- Choose appropriate cross-sectional areas based on the rated current of the equipment and power consumption. This is the most critical factor to prevent overload and ensure safety
- Rated voltage must be greater than or equal to the system’s operating voltage
- Select CXV cable with pure copper conductor core to ensure excellent electrical conductivity
- Choose cables with quality certifications that comply with national or international standards such as TCVN 6612, TCVN 5935-1, TCVN 5933, IEC 60228, IEC 60502-1…
- Carefully inspect the cable’s exterior before purchase. Check the cable sheath for damage, verify its condition, and ensure there are no cracks or deformations.
Through this analysis, Ngoc Lan Cable helps you understand that CXV cable is a widely applied product from low to medium voltage electrical systems, covering both industrial and civil applications.
For those new to the field, CXV cable is not just an ordinary electrical wire, but a technical solution ensuring safety and efficiency for all electrical systems. Ngoc Lan Cable commits to delivering quality products, providing users with confidence in durability and performance.
If you’re seeking a reliable electrical wire solution, CXV cable is the perfect choice to start with.
