Frequently Asked Questions from TANO CABLE

Steel Tape Armor(STA) is only used for laying of directly buried cables or ordinary pipes, ordinary ground, tunnels, etc. The Steel Wire Armor(SWA) can withstand general longitudinal tension, so it is suitable for short-distance overhead laying or vertical laying.

(1) High breakdown strength; (2) Low dielectric loss; (3) Very high insulation resistance; (4) Excellent discharge resistance; (5) It has certain flexibility and mechanical strength; (6) Long-term insulation performance is stable.

Placing the cables in metal conduit, plastic ducting, or where directly buried, through steel wire armouring can protection from direct sunlight or other external influences.Cables for external use have been designed to survive the adverse conditions in the outdoor environment. The outer layers of the cable must serve to protect the cable from external influences such as mechanical damage, water, extremes of temperatures, rodent or insect attack, UV exposure from sunlight, and ozone in the atmosphere.

The main component of cable is copper and aluminum. Whatever copper or aluminum is a commodity which is traded on the open market, just like gold or silver. Prices of copper and aluminum rise and fall with supply and demand.

Polyethylene is an ideal insulating material and can be used for telephone and high speed transmission, high frequency signal and control cable, low, medium and high voltage power cables, overhead line wire and service drop cables. Polyethylene is a semi-crystalline polymer in many forms, with different chemical structures, molecular weights and densities determined by various polymerization methods. Has excellent dielectric properties-high dielectric strength, low dielectric constant and low loss factor at all frequencies. Although PE naturally has poor fire resistance, it can be significantly improved by adding fillers (halogenated or halogen-free). PE can also be mixed to include additives that enhance other properties (such as resistance to sunlight, weather resistance, and chemical degradation). PE is a hard and wear-resistant material, which makes it useful as a sheath material in various applications, but when a more flexible material is required, adding a small amount of butyl rubber or ethylene propylene rubber (EPR) can Improve flexibility. The toughness of PE also makes it suitable for direct burial in the ground. This temperature range is usually -65°C to +75°C, but cross-linked polyethylene (to make XLPE) can extend this temperature range to +90°C.

Normally, cables are tested for compliance against parameters which have been designed to determine their particular suitability. Based on the applicable standards, work out a corresponding test schedule. These tests include electrical tests, mechanical tests and chemical tests. Among them, absence of faults, voltage testing and overall dimension tests was described as non-destructive tests which was operated during production process, and tensile strength and elongation testing, vertical flame testing, acid gas emission tests, and impact tests at cold temperature was called as invasive destructive testing on samples. Also various ageing tests to simulate how the cables are likely to perform over time, such as air ageing, compatibility testing, continuous flexing tests and UV stability tests. In short, TANO CABLE has a strong QA and QC team, and complete experimental work instructions to ensure that the products provided are 100% tested and 100% qualified.