كليات توليد مقره شيشه اي
Dielectric shell material | |||||||||||||||||||
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The ability of SEDIVER Suspension Insulators to indefinitely withstand the effects of time and the elements is directly related to the structural purity of their glass dielectric shells, and to the permanent surface pre-stresses imparted by the SEDIVER toughening process. No other ceramic dielectric shell material possesses this ideal combination of desirable characteristics. | |||||||||||||||||||
The importance of homogeneity | |||||||||||||||||||
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In the case of cap & pin dielectric materials - both porcelain and glass - their long term mechanical performance depends on their ability to resist the initiation and propagation of surface and/or internal cracks due to stress in service. | |||||||||||||||||||
Structural purity of SEDIVER glass | |||||||||||||||||||
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Because the first step of the glass manufacturing process is the total fusion of raw materials, the homogeneity and purity of glass structure is without comparison with other materials.
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| Design-Toughening Process | |||||||||||||||||||
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Over the years SEDIVER engineers have developed and optimised different types of toughened glass dielectric shells, each having the special combination of characteristics described and illustrated bellow. All shell types have been designed in accordance with the insulator profile parameters stated in IEC 60815, used as a guide for the selection of insulators in respect of polluted conditions. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Design-Metal Parts | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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order to avoid unforeseen failures. Inspecting insulators has been recognized to be very difficult to do with porcelain (buzzing each unit...), and is sometimes impossible with composite insulators. For both these types of insulator a visit to each pylon by a ground crew is necessary, using specialised equipment. On the other hand with toughened glass insulators, which cannot be punctured nor be internally cracked, a simple glance at the string gives a complete and reliable assessment of the condition of the insulation. This means that a crew in a helicopter can inspect 100 kilometres of line, or more, per hour.
مقره
نویسنده: حمید کیامیری
