摘要 :
The major requirement of telecommunications outside network products is to satisfy the performance requisites concerning the various environments in which they are applied. Countries such as Brazil, with large extensions located i...
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The major requirement of telecommunications outside network products is to satisfy the performance requisites concerning the various environments in which they are applied. Countries such as Brazil, with large extensions located in tropical regions, have demanded products designed to specific needs, adjusted technologically to the diverse environments, in order to provide telecommunications network reliability and optimized durability in terms of the cost-benefit ratio. Considering climatic factors such as temperature, relative humidity and atmospheric pollutants, three localities from the five described by Koeppen [1] were selected: Manaus, Fortaleza and Sorocaba. The cables were exposed for 18 months in field. Every three months the samples were removed and submitted to laboratory tests for electric resistivity, tensile test, and visual examination. Salt spray, sulphur dioxide and temperature and humidity assays were carried out in order to simulate the field conditions. In these accelerated ageing assays, the visual and mechanical performance was evaluated. For the environmental characterization, there was a follow-up of parameters of temperature, humidity and pollutants derived from chlorine and sulfur.
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摘要 :
The major requirement of telecommunications outside network products is to satisfy the performance requisites concerning the various environments in which they are applied. Countries such as Brazil, with large extensions located i...
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The major requirement of telecommunications outside network products is to satisfy the performance requisites concerning the various environments in which they are applied. Countries such as Brazil, with large extensions located in tropical regions, have demanded products designed to specific needs, adjusted technologically to the diverse environments, in order to provide telecommunications network reliability and optimized durability in terms of the cost-benefit ratio. Considering climatic factors such as temperature, relative humidity and atmospheric pollutants, three localities from the five described by Koppen [1] were selected: Manaus, Fortaleza and Sorocaba. The cables were exposed for 18 months in field. Every three months the samples were removed and submitted to laboratory tests for electric resistivity, tensile test, and visual examination. Salt spray, sulphur dioxide and temperature and humidity assays were carried out in order to simulate the field conditions. In these accelerated ageing assays, the visual and mechanical performance was evaluated. For the environmental characterization, there was a follow-up of parameters of temperature, humidity and pollutants derived from chlorine and sulfur.
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摘要 :
The adequate performance of outside telecommunications network products depends on their capacity of best answering to performance requisites demanded by the operational environments. Countries located in tropical regions, such as...
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The adequate performance of outside telecommunications network products depends on their capacity of best answering to performance requisites demanded by the operational environments. Countries located in tropical regions, such as Brazil, have more and more required customized products. However, its particular environmental features demand quick answers in terms of technology, in order to provide reliability and optimized durability for such products according to the best cost/benefit ratio. Considering climatic factors such as temperature, relative humidity and atmospheric pollutants, two localities from the five described by Koppen were selected: Manaus e Fortaleza, The cables were exposed for 18 months in field. Every three months the samples were removed and submitted to laboratory tests for electric resistivity, tensile test, and visual examination. For the environmental characterization, there was a follow-up of parameters of temperature, humidity and pollutants derived from chlorine and sulfur.
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摘要 :
The adequate performance of outside telecommunications network products depends on their capacity of best answering to performance requisites demanded by the operational environments. Countries located in tropical regions, such as...
展开
The adequate performance of outside telecommunications network products depends on their capacity of best answering to performance requisites demanded by the operational environments. Countries located in tropical regions, such as Brazil, have more and more required customized products. However, its particular environmental features demand quick answers in terms of technology, in order to provide reliability and optimized durability for such products according to the best cost/benefit ratio. Considering climatic factors such as temperature, relative humidity and atmospheric pollutants, two localities from the five described by Koeppen were selected: Manaus e Fortaleza. The cables were exposed for 18 months in field. Every three months the samples were removed and submitted to laboratory tests for electric resistivity, tensile test, and visual examination. For the environmental characterization, there was a follow-up of parameters of temperature, humidity and pollutants derived from chlorine and sulfur.
收起
摘要 :
The adequate performance of outside telecommunications network products depends on their capacity of best answering to performance requisites demanded by the operational environments. Countries located in tropical regions, such as...
展开
The adequate performance of outside telecommunications network products depends on their capacity of best answering to performance requisites demanded by the operational environments. Countries located in tropical regions, such as Brazil, have more and more required customized products. However, its particular environmental features demand quick answers in terms of technology, in order to provide reliability and optimized durability for such products according to the best cost/benefit ratio. Considering climatic factors such as temperature, relative humidity and atmospheric pollutants, two localities from the five described by Koeppen were selected: Manaus e Fortaleza. The cables were exposed for 18 months in field. Every three months the samples were removed and submitted to laboratory tests for electric resistivity, tensile test, and visual examination. For the environmental characterization, there was a follow-up of parameters of temperature, humidity and pollutants derived from chlorine and sulfur.
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