Imported 500kv dry-type cable expert advice

Countries such as America, Japan, Italy, the home is crosslinked polyethylene flexible cable production, after crosslinking cable temperature can reach 90 ℃, transmission capacity increased a lot.But in a high degree of purification of polyethylene material must be added crosslinking agent, etc., affect the insulation performance.
1. the French sole advocate using low density polyethylene insulated cable, up to 400 kv voltage level, to meet the requirements of the order, has already produced 500 kv cable.The cable without crosslinking, although the highest operating temperature is 70 ℃, but guarantee the insulation with high purity, excellent electrical properties, both strengths, but also complement each other. Below level
2. the French think 200 kv power cable using crosslinked type is advisable.But still adhere to a higher voltage grades of cable claims with low density polyethylene insulation, because it has excellent electrical performance.At the same time, foreign experts have suggested that the crosslinking cable temperature drop down, down to 80 ℃, for the directly buried underground.So the differences of the two, gradually shrinking.In this case, we believe that imports which kind of cable can be in the future.

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