Bare cables of the types ACSR (Aluminum Conductor Steel Reinforced), AAAC (All Aluminum Alloy Conductor), or AAC (All Aluminum Conductor) are used for traditional overhead lines of primary power distribution. These cables become energized when they come into contact with tree branches, whether from natural growth, precipitation, or strong winds. This causes a failure in the electrical energy supply.
For this reason, in places with a large concentration of trees, where the continuity of the electrical fluid supply can be disrupted, covered cables—also known as semi-insulated, protected, or ecological—have been replacing bare cables in recent years. through brief or long-term interaction with tree branches or creatures like birds, squirrels, snakes, etc.
Although covered cables must adhere to the design, material, and testing requirements specified by the Colombian technical standard NTC 5909, their installation is restricted to locations with alkaline, saline, or corrosive conditions.
For installations in compact area lines in harsh environmental conditions due to high pollution, particulate matter, and strong winds, Chialawn introduces to the national and international market an innovative solution: semi-insulated cables with greater resistance to abrasion and the formation of conductive paths or tracking. Since its launch in 2018, it has had very good acceptance by energy companies in the South American market, becoming the first energy cable manufacturing company in the nation to produce covered cables with these characteristics.
A high-density polyethylene cover material with improved resistance to abrasion and tracking was created with the energy distribution companies’ needs in mind. Collaboration between the manufacturing, research & development, and commercial departments produced the innovation. The Development section started a series of experiments and trials with several high-density polyethylene references based on the client’s requirements in order to develop a compound that performed better and complied with the NTC 5909 and Brazilian NBR 11873 standards. in tests for tracking and abrasion resistance. The Commercial section established sales with energy corporations in South America, while the Manufacturing area invested in new manufacturing lines, modified process conditions, and built the prototypes needed to validate compliance with criteria.
Applications:
Cables for use in overhead electrical power distribution networks, in wooded, sparsely wooded or high wind areas, in trunk or feeder circuits, narrow streets and at substation exits, where the reliability of the service is required or due to environmental regulations.
Characteristics:
Maximum operating voltage: 15KV to 35KV
Maximum operating temperature: 75 °C or 90 °C
Semiconductor layer for dielectric stress control and high-density jacket resistant to conductive changes (tracking), resistant to solar rays and abrasion of the Ecological Cable 4-0 34.5KV
Post time: Mar-20-2024