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Analysis of electrical insulation tape

by:Kint      2020-03-24
Analysis of electrical insulation tape electrical insulation tape commonly known as electrical tape ( Hereinafter referred to as the insulating tape) , it is used for electrical wiring insulation, such as a kind of special adhesive tape, bag yesterday in the electric circuit is always used in the adhesive type insulation adhesive tape, namely black insulating tape, the base tree ( Back) With immersion have insulation fabric. Follow the progress of science and technology and economic development, now has a variety of types of insulating tape, but common mainly has: PVC and polyolefin insulation tape. Operation method in the process of electricity, although people noticed that the power cord material cross-sectional area of intrusive have influence on the safety of the electric, but tend to be joint use of insulating tape no notice. Power line installation is more and more disorderly, walk under the wood floor, wall, diaphragm and damp underground or in the water. What will happen if the insulation tape used improperly, leakage, endanger personal safety. So we should correct use insulating tape, the power cord connection points '+' connection, '-', 'T' connection. Joint should be bound tightly, smooth and no burr, otherwise, before the thread broken, should press gently with combination pliers, first round to the inlet pressure, then side, thread will break in disconnect joint. If joint in dry place, should be with black tape wrapped around 2 insulation layer, then wrap plastic tape 2 layer, then stretched around 200%, with insulation adhesive belt around 2 ~ 3 layers, finally put 2 layers of plastic adhesive tape. Principle of direct use plastic tape shortcomings more: plastic tape moment does a long easy dislocation, glue; Electrical load weight, fever, joint plastic tape is easy to melt to shorten; Mains connections in the terminal box mutual extrusion, connector have burr, it is easy to plunge into the plastic tape, etc. These risks will directly endanger the personal safety, caused by short circuit, the formation of a fire. And use black insulation tape will not present the above situation, it has a certain strength, flexibility, can long time tight around tapping, affected by time and temperature and compact shape, will not fall off, and flame retardant. Moreover, with black tape wrapped around again after plastic insulation tape to moisture, rust. Of course, has its drawbacks as well as insulating adhesive tape, the waterproof performance is good but it is easy to break, so eventually need to tie up as a protective layer, layer 2 plastic tape on the insulation of the joint and the joint adhesive with each other is not sticky, better performance.
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