Underground distribution - cross-bonding, multi-point grounding
Underground distribution - cross-bonding, multi-point grounding
(OP)
Hello,
We are working on a wind farm project. The collector system is underground. We use TRXLPE 1/3CN 34.5kV cable with LLDPE jacket that are placed in a flat configuration without spacing. We do install a bare copper conductor in the trench along the cable.
The post http://www .eng-tips. com/viewth read.cfm?q id=160969& amp;page=1 adress the cross bonding subject.
My question is : Do we need multi-point grounding along the conductor for the concentric neutral knowing that IEEE 575 have been withdraw? If so, is cross bonding preferable and what are the benefit of such an installation.
The IEEE 575 «Guide for the application of sheath-bonding methods for single-conductor cables and the calculation of induced voltages and currents in cable sheaths» have been withdraw by IEEE. Is there another standard that we can rely on that cover that point?
Thanks
Maxime Fleury
We are working on a wind farm project. The collector system is underground. We use TRXLPE 1/3CN 34.5kV cable with LLDPE jacket that are placed in a flat configuration without spacing. We do install a bare copper conductor in the trench along the cable.
The post http://www
My question is : Do we need multi-point grounding along the conductor for the concentric neutral knowing that IEEE 575 have been withdraw? If so, is cross bonding preferable and what are the benefit of such an installation.
The IEEE 575 «Guide for the application of sheath-bonding methods for single-conductor cables and the calculation of induced voltages and currents in cable sheaths» have been withdraw by IEEE. Is there another standard that we can rely on that cover that point?
Thanks
Maxime Fleury






RE: Underground distribution - cross-bonding, multi-point grounding
The installation of a bare copper grounding conductor raises other questions - is it intended to provide structure grounding for lightning protection or is it intended to be a part of the power circuit?
RE: Underground distribution - cross-bonding, multi-point grounding
It's a 34.5 kV 3 wire delta, the bare copper is effectively installed to provide structure grounding connecting every wind turbine grid.
RE: Underground distribution - cross-bonding, multi-point grounding
Alan
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