Cable experts guidence please ....

[elecsun]

One of the cable manufacturers catalogue specification says 3C,Cu?XLPE/SC/Cu-tape screen/SWA/PVC rated 18/30kV(36kV) manufactured as per IEC-60502.Can i use this cable for 34.5kV rated system. What does their specified 18/30kV rating means? What does the above IEC standard says? Can some experts brief me in details?

 

[TMD]

I'm not an expert, elecsun, but I'll give you some info.

The first bit describes the construction:
3C = 3 conductors
Cu = copper conductor
? = not sure, but it should be a semi-conducting layer
XLPE = crosslinked polyethylene
SC = semi-conducting screen
Cu-tape screen = copper tape screen ;-|
SWA = steel wire armour
PVC = polyvinyl chloride overall jacket

10/30(36) kV = 10 kV phase to ground, 30 kV phase to phase, 36 kV maximum system phase to phase.

For use in a 34.5 kV system, I can't say for sure, but I suspect 'no' because the cable is rated at only 30 kV l-l.

The IEC standard is lengthy. You can buy it at

http://www.iec.ch.

 

[ScottyUK]

Hi elecsun,

I understand why you posted this in two fora, but please try to minimise it - imagine the mess if everyone double posted! Many of us who read the electrical power forum also read this one, so you would get you answer.



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