Wisdom Cat7 Cable - Ningbo Wisdom Electronics Co.,Limited

Cat7 cable multi-core and single-core What is the difference

2014-07-09

Cat7 cable along the wire surface currents mainly PCB Screw Terminal Block is called the skin effect. Current large diameter internally by little, in order to obtain a sufficiently large carrying capacity, but also to have USB extension cable softness wire, large diameter are used strands wound together, the small diameter is not generally used in ... View Details

cat7 cable cable structure

2014-07-01

1. F / FTP 2.0.57mm (23 AWG) solid bare copper wire 3.barrier terminal strip maximum sheath diameter 4 pair foil shield 5 overall tinned copper braid shield wrapped 6 reverse length dimension 7. Meet the cat6 patch panel and specifications • ISO / IEC 11801:2002 (7 classes) • ISO / IEC 11801 Amendment 1 (7A class) • IEC 61156-5:2002 (7 classe... View Details

cat7 cable Introduction

2014-06-17

With the rapid development of optical communication technology, communication between our wired backbone network and local trunk line has been widely used fiber optic cable, optical fiber into the access network has become an inevitable trend. However, the high cost of laying fiber optic cable, connector and terminal cost light - electricity conver... View Details

cat7 cable Basic Introduction

2014-05-19

cat7 cable is typically a few or several groups of at least two conductors each] made of twisted rope-like cable insulation between each network cabinet and often twisted around a central core, the outer package is highly an insulating cover layer. Multi-erected or installed in the ground in the air, underwater, for telecommunications or 3d hdmi ca... View Details

Low voltage plastic insulated power cat7 cable insulation damage repair methods

2014-04-29

Power cable is a transmission or distribution of electric power system with a high-power electric cables. With the great development of the petrochemical industry worldwide, plastic insulated power cable manufacturing process due to its simple construction, easy maintenance, low voltage power cables become important species. However, in the course ... Power cable is a transmission or distribution of electric power system with a high-power electric cables. With the great development of the petrochemical industry worldwide, plastic insulated power cable manufacturing process due to its simple construction, easy maintenance, low voltage power cables become important species. However, in the course of extruded plastic insulation will inevitably produce bumps, scratches, bruised, defects breakdown point, in order to ensure fixed-length production, reduce waste, while ensuring that the finished cable electrical performance to meet the standard requirements, the need to find suitable insulation method of repairing a damaged thermal heat welding repair welding method is to use a suitable power electric iron, cat7 cable with a soldering iron heat insulating integration. 1.1 Low Voltage PVC insulated cable, PVC materials are thermoplastic materials, should be used as cable insulation using heat welding repair damaged forms. In order to ensure and strengthen the electrical and mechanical properties of the repair, using insulating tape for repairs can be single overlap wrapped around the package to be flat. 1.2 low voltage XLPE insulated cable XLPE materials are thermosetting materials, insulating molecular silane crosslinked network cured. Insulated core boil water before cross-linking process, thermal insulation damage repair welding repair method, and then use transparent tape for repairs can be wrapped to prevent mend off; insulated core boils water after cross-linking process, damaged insulation thermal welding method should be repaired, then the pressure rating of 35kV high-pressure self-adhesive tape wrapped overlap and to ensure high-voltage tape around the package must be flat. 2 repair method shrink tube heat shrinkable tube repair method is suitable to the size of heat shrink tubing on the defective points, plus heat shrink and tight defect. cat7 cable insulation material either thermoplastic or thermosetting material PVC XLPE material, nominal cross section of less than 10mm2 insulated cores should be repaired using heat shrink tubing, heat shrinkable tube repair is completed, be wrapped with insulating tape. 3 repair method is relatively hot electric iron welding repair method through tools such as repair, insulation performance can be achieved complete cable level, but repair process is relatively complex, requiring the operator to have a higher level of technology. For smaller core cross-section, the use of a thermal welding repair, difficult to guarantee the quality of repair, repair method should be used to shrink tube. View Details

Causes cat7 cable insulation uneven surface, drum kits and solutions

2014-04-29

Polyethylene (PE) non-polar material with good electrical properties, but its molecular structure is linear, easy to crack into the extruded insulation. Crosslinking is one of the main means of modified PE, PE after crosslinking may significantly improve the resistance to environmental stress, temperature, and mechanical properties at high temperat... Polyethylene (PE) non-polar material with good electrical properties, but its molecular structure is linear, easy to crack into the extruded insulation. Crosslinking is one of the main means of modified PE, PE after crosslinking may significantly improve the resistance to environmental stress, temperature, and mechanical properties at high temperatures. As the silane crosslinked PE crosslinking methods, so that PE molecules to form a crosslinked network C-Si-O-Si-C, now in its simple, economical and superior performance in the production of low voltage cables are manufactured cable Manufacturers are respected. Due to different manufacturers using silane crosslinked cable extrusion temperature, extrusion speed and the speed of cross-linking process is different, cat7 cable insulation core extrusion surface quality on low-impact as well. In this paper, the production of silane XLPE insulated cores occurred during the uneven surface, drum kits to analyze problems and propose solutions to reason and control measures 1 .1 produced raw rubber insulated core phenomenon of cross-linking in the production process sometimes raw rubber phenomenon appears also become stiff insulation blocks or lumps. The main reasons for this phenomenon are: (1) local temperature enough neck or head, causing internal cold glue local produce; (2) As the body temperature or partial plasticizing shear caused bad enough; ( 3) When the filter pad in place, and ultimately affect the cross-linked insulation material extrusion pressure, will produce raw rubber, the surface of the insulating core uneven lumps. 1.2 old plastic phenomenon Crosslinked insulated cores in the production process sometimes old plastic phenomenon, has become a pre-crosslinked, crosslinked material is due to the timing of the extrusion head temperature is too high or crosslinked material long-term stay in the flow path of the dead caused by the Old plastic amber, stay longer, the deeper the color, the higher the temperature the darker color. Generally produce the old glue reasons: (1) extrusion speed is too fast, the faster the screw speed, screw barrel crosslinked material more intense shear forces, so make partial body temperature, leading to the old glue phenomenon; (2) cross-linked insulation material long residence time in the barrel, some insulation material to produce premature crosslinking, so that when the mold core and causing uneven surface. (3) the displacement caused by the filter rubber gasket manifold pressure at the uneven distribution of the flow channel formed corners, this case will produce the old glue, it is also likely due to the loss of part of the filtration filter effects, cat7 cable through After a long time of production, but also make the accumulation of old glue in the screw head is brought out during extrusion, mixing the old glue miscellaneous grains in the insulating layer, causing the insulation core quality problems. View Details

cat7 cable

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SFTP CAT5E PATCH CORD

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