Structure of NYY cable
Conductor: Copper (Cu) or aluminum (Al) is used as the conductor material, with copper conductors being more common. The conductor can be a single-core or multi-core structure.
Insulation: Polyvinyl chloride (PVC) is used as the insulating material, with good electrical insulation properties and mechanical strength.
Sheath Layer: Polyvinyl chloride (PVC) is also used for the outer sheath, providing additional mechanical protection and environmental resistance.
Filler layer (multi-core cables): In multi-core cables, there is usually filler material between the conductors to maintain the roundness and mechanical stability of the cable.
NYY Cable Product Performance
| Conductor Structure | Single or multi-core, round or fan-shaped conductors |
| Sheath Color | Black or other standard colors (on request) |
| Operating Temperature | -5°C to +70°C |
| Laying Ambient Temperature | not lower than -5°C |
| Minimum Bending Radius | Single-core cables: 20 times the outer diameter of the cable multi-core cables: 15 times the outer diameter of the cable |
| Flame-Retardant Performance | Conforms to IEC 60332-1 (flame-retardant type NYY-O or NYY-J available on request) |
| Oil Resistance | Ordinary type is not oil-resistant (oil-resistant type is available upon request) |
| Application Scenario | Indoor, tunnel, pipeline, underground direct burial and other fixed laying occasions. |
NYY Cable Technical Specification
| Model | Number of Cores | Cross-Sectional Area (mm2) | Voltage Level (kV) | Outer Diameter (mm) | Weight (kg/km) |
| NYY-J 1×1.5 | 1 | 1.5 | 0.6/1 | 5.5 | 35 |
| NYY-J 2×1.5 | 2 | 1.5 | 0.6/1 | 9 | 70 |
| NYY-J 3×2.5 | 3 | 2.5 | 0.6/1 | 11 | 120 |
| NYY-J 4×4 | 4 | 4 | 0.6/1 | 13.5 | 200 |
| NYY-J 3×6+1×4 | 4 | 6 (3 cores) + 4 (1 core) | 0.6/1 | 14.5 | 250 |
| NYY-J 5×10 | 5 | 10 | 0.6/1 | 18 | 400 |
| NYY-J 1×25 | 1 | 25 | 0.6/1 | 10.5 | 150 |
| NYY-J 3×35+1×16 | 4 | 35 (3 cores) + 16 (1 core) | 0.6/1 | 22 | 600 |
| NYY-J 4×50 | 4 | 50 | 0.6/1 | 25 | 800 |
| NYY-J 1×95 | 1 | 95 | 0.6/1 | 16.5 | 350 |
| NYY-J 3×120+1×70 | 4 | 120 (3 cores) + 70 (1 core) | 0.6/1 | 32 | 1200 |
NOTE: NYY cables are typically only used in low voltage power systems (0.6/1 kV) and are not suitable for medium or high voltage scenarios. Medium and high voltage cables are often made of different designs and materials than NYY to meet higher voltage levels and insulation requirements. Such as cross-linked polyethylene (XLPE) insulation and copper tape shielding.
Hot Models of NYY Cables
| Number of Cores | Models | Example | Voltage |
| Single Core Cable | NYY-J 1x… | NYY-J 1×50 (denotes single core with a cross sectional area of 50mm²). | 0.6/1kV low voltage cable |
| Multi Core Cable | NYY-J 2x… NYY-J 3x… NYY-J 4x… NYY-J 5x… | NYY-J 3×25+1×16 (means 3 phase wires of 25mm² plus 1 ground wire of 16mm²). | |
| Special Models: NYY-O Round cable; NYY-J Cable with an earth conductor. | |||
Main Applications of NYY cables
| Power transmission | used in low-voltage power systems to transmit electrical energy. Suitable for fixed laying, such as indoor power distribution, industrial equipment power supply. |
| Building Electrical Installation | Used in the power distribution system inside the building, such as lighting, sockets, etc. |
| Industrial equipment | suitable for electric power connection in industrial environments such as factories and workshops. |
| Underground Laying | can be used for direct burial or pipe laying, suitable for tunnels, underground facilities and other occasions. |
| Public Facilities | used for power supply in public buildings, hospitals, schools and other places. |
Features of NYY Cables Produced by ZMS
| Weather Resistance | PVC sheath has good weather resistance, suitable for indoor and outdoor environments. |
| Mechanical Strength | the sheath layer provides good mechanical protection and is suitable for fixed laying. |
| Electrical Performance | the insulation layer provides reliable electrical insulation to ensure safe operation. |
| Convenient Installation | cable structure is stable, easy to lay and install. |
ZMS Advises You How to Choose
1. Current Loading: Select the appropriate conductor cross-section area according to the actual load current to avoid overloading.
2. Laying Environment: When laying directly buried, choose the sheath type with higher mechanical strength according to the radiation environment.
3. About Multi-Core Cables: select the number of cores according to the demand of the equipment, for example, three-phase equipment usually needs 3-core or 4-core cables.