楼房接地注意（Building grounding notice）.docVIP

楼房接地注意（Building grounding notice） Machine room grounding There are generally four kinds of grounding forms in the computer room: Computer direct current logic: the layout of the DC work site in the computer room of the building is the equipotential grounding network (or logic ground grounding network) of the digital circuit. The network used for copper in floor, according to the layout of the equipment of computer, and a grid, with a dedicated ground terminal, by weaving the soft copper wire to the length of the shortest is connected to the computer equipment. The computer needs to be grounded directly to the ground terminal by direct current. Communication work: in computer systems, a large number of AC equipment is equipped and used in addition to the use of direct current equipment. AC work grounding is the use of alternating current equipment in the computer system 2 times grounding, or by special equipment and metal connection to the earth, its role is to ensure the safety of personal and equipment. The implementation of the exchange work can be divided into communication equipment communication equipment and computer system of the computer system using the two kinds of circumstances, should be independently according to the standard electrical grounding, to prevent the risk of electric shock due to insulation and damage. Safe place: a metal enclosure or frame which is insulated from the live part of the electrical equipment is made a good grounding, called safety protection ground. If the casing is not grounded, the casing has a higher potential, the contact of the human body will have the risk of electric shock. When the insulation is broken down, the ground short circuit current will flow along the grounding wire and the two channels of the human body into the ground. Normally, the chassis of AC equipment used in the computer room (such as: air conditioner, frequency stabilizing device, transformer, UPS backup power supply, etc.) shall also be grounded in ac