Whether the weight of the power cable per meter is calculated
the network patch panel is now more mainstream network system patch panels, generally every 1U height can accommodate 24 8-core network port, back line, front jumper plug in addition, look at the Google Encyclopedia on the 110 patch panel instructions, found a little problem, that is 110 patch panel documents, but the picture is not 110 patch panels, that should be called Kelon, we also Called this thing for the VDF, it should be noted that the 110 system is AT & amp; T, that is, Lucent (Lucent) company's standards, and Kelon is the German Kelon (kelone) company's standard, not the same thing, Dragon frame is generally used in large-scale voice wiring system, and generally fixed for the wall, if placed in the standard cabinet will have to install the backplane, the Kelon frame steel frame fixed on the backplane The 110 patch panel is a standard 19-inch equipment, can be directly fixed in the standard 19-inch cabinet As the 19-inch standard cabinet has been widely used in the civilian areas, so Kelon is now less application, mainly in the use of operators these with a number of tattoo and fat ancient mix of full-chip cable is integrated wiring system in the most basic connector, the product range is also very much on the market, of course, there are many changes in the form On the use of network patch panels and 110 patch panels, Google Encyclopedia and the library have a detailed description, you can refer to
AC power is a two-phase exchange of the power system, itself is positive and negative exchange, the electromagnetic effect can almost count the daily life of the free radiation are more than this number, and can rest assured that the general life supplies, the larger electromagnetic radiation from the DC Of electrical supplies, which only need to pay more attention
12 meters below the road should be used to protect the tube, the use of rigid PVC pipe protection of course, but not necessarily have to wear armored cable
