Many customers ignore the voltage level parameter when choosing ADSS cable. When ADSS cable first put into use, my country was still in the undeveloped stage for ultra-high voltage and ultra-high voltage fields. The voltage level commonly used for conventional distribution lines was also stable in the range of 35KV to 110KV. The PE sheath of ADSS optical cable was enough to play a certain protective role.
However, in recent years, my country's requirements for power transmission distance have been greatly improved, and the corresponding voltage level has also been improved a lot. Distribution lines above 110KV have become a common choice for design units, which has put forward higher requirements for the performance (anti-electric tracking) of ADSS fiber optic cable. As a result, AT sheath (anti-electric tracking sheath) has been officially widely used.
The use environment of ADSS cable is very harsh and complex. First of all, it is laid on the same tower as the high-voltage line and runs near the high-voltage transmission line for a long time. There is a strong electric field around it, which makes the outer sheath of ADSS cable very easy to be damaged by electrocorrosion. Therefore, in general, when customers understand the price of ADSS cables, we will ask about the voltage level of the line in order to recommend the most suitable ADSS cable specifications.
Of course, the performance requirements of AT sheath (anti-electrical tracking) also make its price slightly higher than PE sheath (polyethylene), which also leads some customers to consider the cost and think that it can be installed normally, and will not consider the impact of voltage level more.
At the end of September, we received an inquiry from a customer who wanted to purchase a batch of ADSS optical cables from us in October. The specification is ADSS-24B1-300-PE, but the line voltage level is 220KV. Our suggestion is to use the specification of ADSS-24B1-300-AT. The designer also suggested using AT sheath (anti-electrical tracking) optical cable. The 23.5KM line, plus the matching hardware, was finally selected due to budget issues. A small factory with a low price was finally selected. At the end of October, the customer came to us again to inquire about the price of ADSS hardware accessories. At the same time, he told us that the ADSS fiber cable purchased from that company before was now broken in several places. From the photos, it can be seen that it was obviously caused by electrical corrosion. This was also a temporary bargain that affected the normal use in the later period. After a detailed understanding, we finally gave a solution, which was to reconnect at the breakpoint and equip several junction boxes. Of course, this is only a temporary solution (if there are many breakpoints, it is recommended to replace the line).
Hunan GL Technology Co., Ltd has been in the fiber cable industry for more than ten years and has formed a good brand effect in the industry. Therefore, when we handle customer inquiries, from quotation to production, to testing, delivery, and then to construction and acceptance, we try to think from the perspective of customers. What we sell is brand, guarantee, and reason for long-term development.