shemar-8181801威尼斯

composite cross-arm tower

line composite insulators

line composite insulators

the line composite insulators of shemar has realized the international advanced level of the performance, through innovation of design, materials and process, especially the in-depth and systematical research on high-temperature vulcanized silicone rubber materials of external insulation shed, which has met the application under the worst environmental conditions, and taken the lead in the application in ehv ac/dc strain tower. the line composite insulators of shemar covers all ac/dc voltage class, ac 35kv~1000kv, dc ±400kv~±1100kv, and market shares rank top in global ehv ac/dc field.

product value
development trend

1.meet the use requirements in life cycle in the worst environmental conditions

the line composite insulators of shemar have realized the international advanced level of aging-resistant performance of shed material through in-depth research on high-temperature vulcanized silicone rubber shed, which can withstand rigorous examination of operation in life cycle under the worst environmental conditions.

2.more competitive cost

the line composite insulators of shemar can meet the use requirements in life cycle, and provide quality assurance for 20 years, with lifetime same as overhead lines. even if under the worst environmental conditions, reliable operation of line composite insulators can be guaranteed, and maintenance free can be realized in life cycle, thus converted to average annual use cost, the line composite insulators of shemar is more competitive.

3.meet the operation requirements of the strain tower

the line composite insulators of shemar meets the operation requirement of ehv ac/dc strain tower that represents the highest technology requirement, and first used in ehv ac/dc strain tower in the world. it is of important demonstration significance to full composition of external insulation of overhead lines, and improvement of economy and reliability of external insulation of overhead lines.

1.development trend in china

after more than 30 years of development, users of china power grid have fully recognized and accepted the immense value of line composite insulators, and started the process of all-composite external insulation of overhead lines. in the past decade, in the newly construction project of overhead lines of china power grid, the composition rate of line insulators is above 75%; in ehv ac/dc project, this rate is higher. the porcelain and glass insulators are mostly applied in the strain tower at present, while the strain tower will be covered with line composite insulators soon.

the users ofchinapower grid have continuously improved research and test standard for materials of line composite insulators at the same time of recognizing line composite insulators, which make line composite insulators better meeting the engineering demand. it is estimated that the application proportion of line composite insulators inchinawill continue to increase inchina, and higher requirements will be put forward for performance and quality of the product.

2.international development trend

with a long history of using line composite insulators, europe and theunited stateshave fully recognized the value of line composite insulators. because line composite insulators have outstanding advantage in anti-pollution flashover accident, and purchasing and operation and maintenance costs are low, the line composite insulators of euro-american countries occupy a large proportion, usually over 50%. it is estimated that euro-american countries will put forward higher technical requirements of line composite insulators in the future, to guarantee the reliable operation of line composite insulators in life cycle. since environmental pollution inindiais increasingly serious, the pace of application of line composite insulators inindiais accelerated. at the same time,indiahas fully absorbed and learned experience and training fromchina, and paid more attention on the quality of line composite insulators.