Hello,
I am seeking guidance on when and where to use cable surge arresters for buried 33kV cable.
The situation is as follows:
1. The HV cable is buried for its entire length except at each end where it is fully enclosed inside a switchroom. There is no exposure to a direct lightning...
Thanks guys,
I would just like to make note that the cables are direct buired and are not shielded.
Regarding the final comment from DanDel, I am not trying to avoid a crossover (that would be impossible). The problem (the way i see it) is that a large portion of the cable run is in 'same...
Thanks electricuwe.
I already have a recommended layout (from AS3008) which alternates the R-Y-B arrangment (it keeps Red on top, and alternates the Yelllow and Blue for each trefoil group). This is what I intend on doing, but naturally they will cross at termination. The entire run is...
Has anyone come across a simple formula or rule of thumb for calculating the derating of cables when the same phases are grouped together? For example, I am running 3 x 400mm2 single core cables per phase from switchboard to generator. To avoid derating the cables they can be run in...
Can someone give me a crash course on problems associated with paralleled generators having a Neutral earth resistor or reactor which is oversized. Also, whats the purpose of using a reactor rather than a resistor?
