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The Synthetic Arc Quenching Fuse Tube replaces the Type C cutout fusetube lined with ”°bone fiber”±. This new fuse tube has a coremade from a proprietary formula-tion, in part, consisting of polyester fiber, epoxy and Aluminum Tri Hydrate (ATH).Features and benefits:
1. The moisture needed to achieve arc 2.0£„ extinction comes from the molecular water of the ATH mixed into the tightly con-0.0£„trolled epoxy matrix. Therefore, the release 02468101214 of moisture and resulting gases are much Weeks better controlled than in the case of the fuse COMPARISON CHART tubes lined with bone fiber.
2. The epoxy matrix used in the core has a high resistance to moisture absorption from humidity, particularly when compared withbone fiber. The moisture content and therefore the interrupting ability of this system are not affected by ambient humid-ity. Bone fiber does absorb atmospheric moisture to a much greater extent as shown on the comparison chart. The valuesrepresent percent gain in weight when the samples of the fuse tubes made with bone fiber and the synthetic arc quenching materials are left immersed in water. An added advantage is that if the fuse tube is left hanging upside down, the core will not swell. It is known that when a fuse tube lined with bone fiber is left hanging upside down and if the bore gets filled with rainwater, the bone fiber will swell. In many instances it will
close the fuse tube bore making it inoperable. While the synthetic arc quenching material will not swell, it is not recommended to leave the fuse tube hanging upside down as the collected water can cause corrosion of fuse link, cap and castings.
3. The structure of a fuse tube consists of an arc-quenching core surrounded by a glass-reinforced shell for in-creased mechanical strength. The matrices of materials used for the core and shell of a BONE FIBER LINER SYNTHETIC LINER synthetic arc quenching fuse tubes are epoxy resins. Since the shell is wound over an uncured core, the two epoxy matrices bond with each other forming a chemical bond. The chemical bond prevents the delamina- tion of the core and the shell with aging and the thermal cycling. In case of fuse tubes with a bone fiber core, the core with its high moisture content makes it difficult to achieve a chemical bond and, therefore, the interface between them relies mainly on a mechanical interlock. With age and thermal cycling, this interface can and does delami- nate. Decades of experience with bone fiber indicate that the performance of a bone fiber lined fuse tube is not compromised by such delamination. The pictures at left compare the synthetic and bone fiber fuse tubes after a thermal cycling test.
WE are a largest make vulcanzied fiber tube ,bone fiber liner tube ,Synthetic Arc Quenching Fuse Tube factory in china .Our product supply GE,LITTLEFUSE ,HUBBER ,COOPER ,ABB etcs .more news please look at http://www.youngmancn.om , http://www.chinavft.com , http://www.allinsulating.com or contact Ms .zou sale@weielectric.com
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