5.7 Cable sheath protection of high-voltage cables
For thermal reasons and to reduce losses along a cable, the cable sheath or screen of highvoltage
single-core cables is mostly earthed at one end only. The unearthed end must then be
protected with arresters against transient overvoltages.
The...
Magoo2,
What cuky2000 is traing to explain is ok, but I think it is for the selection of surge arresters. I am attaching a a file from my librarie.
About cross bonding, what you are writting is right, but usualy in those points the cable sheath is grounded through a surge arrester. It is this...
I would like to know if there is a methot to determinate the kV of a cross bonding surge arrestor.
The standard method as used by NGTS in the UK is to select an arrester with a Ur of 1kV per 10kA RMS through fault current at the point of installation. So if the fault level is 40kA, then the...
