Langsung ke:,Kabel listrik adalah media untuk menyalurkan energi. Contents. Historymade of multiple strands of natural fibers such as, andhave been used for millenia for hoisting, hauling. By the 19th century,deepening of mines and construction of large ships increased demand forstronger cables.
Modem juga dapat dibedakan berdasarkan cara modem menyalurkan koneksi. Dalam hal ini modem bisa dibedakan menjadi modem kabel dan wireless. Modem kabel, ya seperti namanya, modem ini menggunakan kabel untuk menyalurkan koneksi ke komputer client. Sedangkan wireless atau nirkabel, tidak membutuhkan kabel untuk menyalurkan jaringan internet. Intermediate Distribution Frame (IDF) Unit IDF adalah unit dengan fungsi yang sama denga MDF dan RK. IDF akan membagi lagi kelompok kabel telepon dari RK ke dalam kelompok yang lebih kecil. Yang membedakan dari bentuk fisik IDF ini adalah IDF memiliki ukuran yang lebih kecil lagi dibandingkan dengan MDF dan RK. IDF banyak kita temukan berada.
Invention of improvedtechniques made high quality steel available at lower cost, and so wireropes became common in mining and other industrial applications. By themiddle of the 19th century, manfacture of large was done using machiners similar to that used for manufacture of mechanical cables.In the 19th century and early 20th century, electrical cable wasoften insulated using cloth, rubber and paper. Plastic materials aregenerally used today, except for high reliability power cables. So thatis how it became cable.
Electrical cablesElectrical cables may be made flexible by stranding the wires. Thetechnical issue is to reduce the skin effect voltage drop while usingwith alternating currents.In this process, smaller individual wires aretwisted or braided together to produce larger wires that are moreflexible than solid wires of similar size. Bunching small wires beforeconcentric stranding adds the most flexibility. A thin coat of aspecific material (usually -which improved striping of rubber, or for low friction of moving conductors, but it could be,and another materials and of course the wire can be bare - with nocoating material) on the individual wires. Tight lays during strandingmakes the cable extensible (CBA - as in telephone handset cords).Bundling the conductors and eliminating multi-layers ensures auniform bend radius across each conductor.
Pulling and compressingforces balance one another around the high-tensile center cord thatprovides the necessary inner stability. As a result the cable coreremains stable even under maximum bending stress.Cables can be securely fastened and organized, such as using cable trees with the aid of. Continuous-flex or used in moving applications within can be secured using strain relief devices or cable ties. Copper corrodes easily and so should be layered with Lacquer. Fire protectionIn building,electrical cable jacket material is a potential source of fuel for afire. To limit the spread of fire along cable jacketing, one may usecable coating materials or one may use cables with jacketing that isinherently fire retardant.
The plastic covering on some metal cladcables may be stripped off at installation to reduce the fuel sourcefor accidental fires. Inin particular, it is often customary to place inorganic wraps and boxesaround cables in order to safeguard the adjacent areas from thepotential fire threat associated with unprotected cable jacketing.To provide fire protection to a cable, there are two methods:a) Insulation material is deliberately added up with fire retardant materialsb) The copper conductor itself is covered with mineral insulations( MICC cables) Interference protectionIn applications powering sensitive electronics, keeping unwantedfrom entering circuits is important.
This can be accomplished passivelywith shielding along the length of the cable or by running the cable inan enclosure separate from any other wires which may induct noise.