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                           High voltage impulse cable
                                                                                             Trakonta ltd
                                        High voltage impulse cable
     A high-voltage impulse cable (HV cable) is a cable used for electric power pulse transmission at high voltage. A cable includes a conductor and insulation. Cables are considered to be fully insulated. This means that they have a full rated insulation system which will consist of insulation, semi-con layers, and a metallic shield. This is in contrast to an overhead line, which may include insulation but not fully rated for operating voltage (EG: tree wire). High-voltage pulse cables of differing types have a variety of applications in pulse current generators, instruments, ignition systems and another pulse systems. 
      In all applications, the insulation of the cable must not deteriorate  
due to the high-voltage stress, ozone produced by electric discharges in  
air, or tracking. The cable system must prevent contact of the high-  
voltage conductor with other objects or persons, and must contain and  
control leakage current. Cable joints and terminals must be designed to  
control the high-voltage stress to prevent breakdown of the insulation.
     High voltage cables are characterized by:

1. Rated impulse voltage;
2. Cross-section;
3. Geometric characteristics;
4. Specific inductance;
5. Discharge current;
6. Isolation resource;
7. Wave resistance.

     The characteristics of some high voltage impulse cables are shown in the table:
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