RF Cable Assembly fault is the most direct cause insulation to reduce breakdown. Guide min insulation to reduce many factors, according to the practical operation experience, sums up several basic conditions. 
 
1) the external force damage. By RF connector  he analysis of the running of the recent years, especially in the high-speed economic development of Shanghai pudong, now a considerable amount of cable fault are caused by mechanical damage. Such as: non-standard cable laying installation construction, easy to cause mechanical damage; On the buried cable to cable damage in civil engineering construction is extremely easy to operation, etc. If the injury is not serious, sometimes for months or even years to thoroughly breakdown form failure can lead to injury, may sometimes destroying short-circuit fault, directly affects the safety of the power unit production. 
 
2) insulation be affected with damp be affected with damp. It is also very common, generally occur in the directly buried or exhaust pipe of cable joint. Such as: cable joint production of unqualified and do joint in humid climate conditions, can make the joint water or mixed with water vapor, r long time under the action of electric field to form water branch, gradually damage the cable insulation strength and cause failure. 
 
3) chemical corrosion. Cable directly buried in a region with acid-base function, often can cause cable armoring, lead or outer protective layer of corrosion, protective layer due to the long suffering chemical corrosion and electrochemical corrosion, the coating failure, the insulation is reduced, can also lead to cable fault. : unit cable corrosion situation is quite serious. 
 
4) for a long time overload running. Overload operation, due to the heating effect of the current, load current through the conductor cable will cause fever, at the same time charge of skin effect and eddy current loss of steel armoured, additional heat insulation dielectric loss also can produce first, so that the cable temperature. Long-term overload operation, the high temperature will accelerate the aging of the insulation, and insulation breakdown. Especially in the hot summer months, the rise of temperature of the cable often resulted in the breakdown of cable insulation is weak at first, so in the summer, cable fault is also much more special. 
 
5) cable joint failure. Cable joint is the weakest link in the cable line, directly by the staff negligence caused by bad (construction) cable joint failure often occurs. Construction personnel in the process of making cable joint, if there is a connection is not tight pressure, inadequate heating, such as the original mesh, can lead to insulation cable head is reduced, so as to cause an accident. 
 
6) environment and temperature. Cable of the external environment and heat can Custom Cable Assembly  ause cable high temperature, insulation breakdown, even burst into flames. 
 
7) the cable body normal aging or other reasons such as natural disasters.



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