3+2 Core Cable NYY 70 Mm2 Unarmored Outdoor Underground Electrical Wire

3+2 Copper Core PVC Sheathed Unarmored NYY Underground Electrical Cable

Introduction:

NYY cable is a very commonly used power cable. Its function is the same as N2XY cable most of the time. Although the overall performance is not as good as N2XY cable, and it is gradually replaced by N2XY cable, it is still available in many fields due to its relatively low price. Wide range of applications.

Product Structure:

The components from the inside to the outside are conductor, insulating layer, filling layer, (steel belt layer), and sheath layer. The most commonly used conductor material on the market today is of course copper conductor; the insulating layer and outer sheath material are both polyvinyl chloride, that is, PVC plastic; the filling layer is generally some softer nylon material, in order to prevent the internal conductor of the cable The steel tape armored NYY cable is a NYBY cable. The steel tape armored function is compression resistance and can be used for underground burying.

Specificaiton:

The difference between NYY cable and N2XY cable:

The full name of N2XY cable is copper (aluminum) core XLPE insulated and PVC sheathed power cable;
The full name of NYY cable is copper (aluminum) core PVC insulated and PVC sheathed power cable;
1. Different insulation materials
The insulating material used in N2XY cable is cross-linked polyethylene, while NYY cable is made of polyvinyl chloride. Since the insulation of the N2XY cable does not contain chlorine, it will not produce a large amount of chlorine gas (chlorine is a toxic gas) during combustion. In comparison between the two, cross-linked polyethylene insulation has stronger high temperature resistance, is more environmentally friendly, and has better performance than ordinary PVC.
2. Different working temperature
Conventional N2XY cable allows the maximum operating temperature of 90°C, and the maximum temperature does not exceed 250°C when short-circuited (within 5 seconds); conventional NYY cables allow the maximum operating temperature to be around 65°C, and the maximum temperature does not exceed 160°C when short-circuited (within 5 seconds) . The difference in maximum operating temperature determines that N2XY has a higher current carrying capacity, and also determines that N2XY cable is better than NYY cable in terms of overall performance.
3. Different working voltage range
Normally, the working voltage range of N2XY cable is 6～500KV, while NYY cable is 1～6KV. Therefore, NYY cables are generally used in low-voltage environments, while N2XY covers high, medium and low-voltage environments. This is why the N2XY cable manufacturing process requires higher levels.
4. Price and longevity
With the same specifications and models, the price of N2XY cable is slightly more expensive than that of NYY, which may be the reason why NYY cable is still alive. However, N2XY has a longer service life, and is more resistant to high temperatures and safer. In terms of long-term and safety factors, it is more cost-effective to use N2XY cables.
Finally, residential projects are recommended to choose N2XY cable, which is safer and more environmentally friendly. If the budget is really limited, you can choose to use NYY cables in places where non-human settlements and voltage and temperature requirements are not high. All in all, the general trend is that N2XY cables gradually replace VV cables.

Underground Electrical Cable