What is Electrical Stress

Please download to get full document.

View again

of 9
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Categories
Published
Without an insulation shield, you can see how the voltage leaves the conductor travelling through the insulation, very erratically and effectively seeking ground/earth, creating hot spots and eventually cable failures.
  Electrical Stress      Electrical Stress Explained  Without an insulation shield, you can see how the voltage leaves the conductor travelling through the insulation, very erratically and effectively seeking ground/earth, creating hot spots and eventually cable failures. The creation of an “insulation shield” allows the stress/flux to travel very efficiently and evenly, along the cable, dissipating the “stress” evenly.     The problem arises when we remove the insulation shield for cable splicing and terminating. The abrupt end to the shield allows the different percentages of voltage to escape the insulation at a concentrated point, creating an area of extreme stress, as the voltage seeks ground/earth. This electrical stress again creates intense heat and eventually failure. In a cable splice, we are not trying to eliminate the stress, but rather control it. In some cable splice ki ts gradient mastic, and “heat shrink stress control tubes” are used to contain and control the  deflection of the flux lines. In other cable joint kits it could be push-on single mass control tubes. In hand tape kits, it is all built with different types of tape, put on in specific order, to very specific measurements. With cable terminations it is different. We are not trying to control and contain, we are trying to control and dissipate as much electrical stress as possible. Again this can be achieved in various ways. Mastic and heat shrink stress control tubing, a solid push-on mass, or again hand taping.    The type of cable termination doesn’t matter, they are all trying to achieve the same result. Control and dissipate electrical stress through deflection.
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks