Car charging pile cable market will develop rapidly

Due to the lack of understanding of the product standards or customer's special requirements of the export wire and cable port manufacturers, especially those new wire and cable products, the phenomenon of export products being returned is not uncommon, causing serious economic losses for export companies.

According to China's National Times, a cable manufacturer in Changzhou, Jiangsu Province, suffered continuous returns from Australian customers. Following the return of a batch of 88,000 meters of solar photovoltaic cable in March, a batch of 66,000 meters of returns was returned in April. Accidental tearing of the cable jacket during installation.

The reason for this return event is still caused by the blind delivery of product inspection standards and customer specific requirements that are not fully understood. Wire and cable companies across the country have repeatedly experienced similar situations in other types of export products. For example, an ABC insulated aerial cable exiting a cable plant in a locality has caused a large number of returns due to insufficient height of the ridge on the phase line.

For photovoltaic cables, according to the analysis of experts, as a key component for connecting photovoltaic modules and inverters in solar energy systems, they are often used under harsh environmental conditions and must withstand high temperatures, ultraviolet radiation, ozone, severe temperature changes, and chemical attack. During installation and maintenance, it is also subjected to pressure, bending, tension, cross tensile load, and strong impact. Therefore, photovoltaic cables should not only have good electrical properties, but also require higher thermal, chemical, and mechanical properties of the jacket. These superior characteristics are mainly determined by the quality of the insulation material and sheath material used in the cable and the processing technology. . If the strength of the cable sheath is not enough, the cable insulation layer is vulnerable to damage, which will affect the service life of the cable and even the entire photovoltaic system. In severe cases, short circuits may occur, even causing fire and personal injury.

It is understood that in order to ensure that export cable quality meets the standard requirements, Changzhou photovoltaic cable production company has sent cable samples exclusively to an internationally-recognized testing agency designated by the customer for full-scale inspection according to international standards before export. The electrical performance of the product The weather-resistant environmental performance and mechanical performance indicators meet the standards and the products have also passed relevant certifications. However, end users in Australia found that in the construction wiring, the two ends of the cable must be separated from each other by a certain distance before connecting with the terminals in the system. The connection between the two parallel cores of the cable is poorly designed. Too thick and too narrow, if there is no professional tool to assist the operation during actual operation, it is easy to tear the sheath along one side of the connection point when the two cores are separated, so that the insulation layer of the cable core wire is accidentally exposed, resulting in a safety hazard during use. Therefore, the entire shipment was returned.

In response to the event that this certified and tested product will eventually be returned, the Changzhou Inspection and Quarantine Bureau in Jiangsu found that the testing standards will not exhaust all product requirements, especially for special occasions and special requirements for the environment. . The connection points between the cores of the above cables are not mentioned in the standard, and of course there are no corresponding items and requirements in the tests.

The inspection and quarantine department believes that various manufacturers at home and abroad have different process requirements for connecting points, and the thickness and width are not the same. However, most of them do not take into account the specific environment and installation conditions of on-site engineering wiring, so it is inevitable. There have been detections and certifications of "qualified" products that cannot be used and eventually encounter returns.

In order to minimize product export risks, the inspection and quarantine authorities once again reminded cable exporters to: in addition to strictly complying with the relevant importing countries or international standards for production and testing of products, they should also communicate with foreign customers in advance before signing contracts to learn more about the products. The use of the environment and use, it is best to send samples in advance trial by the customer, the user trial and then batch production and delivery, so that the product can meet both the standard requirements, but also meet customer requirements, so as to avoid "qualified" products encounter return The embarrassing situation reduces unnecessary economic losses.