Comparison between national standard cables and non-standard cablesIssuing time:2021-04-10 16:10 The service life of national standard cables and non-standard wires and cables is undoubtedly longer than that of national standard cables. Next, we will briefly analyze the difference in service life between the two types of cables. The service life of national standard wires and cables is also closely related to the usage environment. Even if the quality of national standard cables meets the national requirements, the corresponding service life will be reduced according to the severity of the environment in harsh environments. Generally, the service life of national standard cables, such as YJV cables or YJV22 armored buried cables, will be between 10 and 30 years when laid in the air or underground. Of course, buried cables If there are protective measures such as pipelines and bridges outside the overhead cables, their lifespan will also be extended accordingly. There will be a gap in copper wire for non-standard wires and cables. Firstly, the purity of the copper wire is not enough to meet national standards. The use of inferior copper wire will significantly reduce costs, and the diameter of the copper wire will definitely not reach (less than square meters). Once the user uses it, it will become "overloaded" and its lifespan will be greatly reduced. In addition, the outer insulation of "non-standard" cables is also not up to the standard, and the decrease of anti-aging degree will easily lead to the rupture of the outer skin, and the service life will be within a few years. The price of national standard cables is relatively higher, but they can be guaranteed to be genuine and reliable for long-term use. Non standard cables are cheap, but they cut corners and are prone to accidents. Fires caused by wires are not uncommon. |