Posts

Showing posts with the label Fused

Fuse Construction and Operation

Image
The typical fuse consists of an element which is surrounded by a filler and enclosed by the fuse body. The element is welded or soldered to the fuse contacts (blades or ferrules). The element is a calibrated conductor. Its configuration, its mass, and the materials employed are selected to achieve the desired electrical and thermal characteristics. The element provides the current path through the fuse. It generates heat at a rate that is dependent upon its resistance and the load current. Mersen (Gould Ferraz Shawmut) Fuse Construction The heat generated by the element is absorbed by the filler and passed through the fuse body to the surrounding air. A filler such as quartz sand provides effective heat transfer and allows for the small element cross-section typical in modern fuses. The effective heat transfer allows the fuse to carry harmless overloads. The small element cross section melts quickly under short circuit conditions. The filler also aids fuse performance by abs...

DDM Service Utilises Fused Deposition Modelling

At the core of the Laser Lines Direct Digital Manufacturing (DDM) service is the Stratasys Fused Deposition Modelling (FDM) technology. FDM is an additive manufacturing technology that produces strong accurate parts in functional thermoplastic materials. This technology is able to produce durable parts, offering a level of performance similar to injection-moulded components and providing an alternative to traditional manufacturing. Direct Digital Manufacturing takes data from 3D CAD and turns it into a functional part to provide a fast economical method for producing low volume parts. As additive manufacturing can produce any shape required, the designer can concentrate on function without having to worry about how it can be made. What would have been a complex assembly can now be produced as one part. Components can be produced as and when required eliminating the need for inventory or spares. As different versions of a part can be produced or re-produced at will, designs can be ...