5KV Termination

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ledsd

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I have 4160 primary 500 3/c to stress cone and the cable has no coating over the copper tape sheild.
I have recomended (as i have done on other jobs) that a heat shrink be placed over the copper tape shield for protection from damge of copper tape.
my boss says no...cheap...o
is there a code on this or as with me just good pratice to do as a qualified electrician should always do a craftsman quality job.

as we know when bends are place in the conductor this shield will want to rupture and seperate from the conductor.
i quess i could phase tape the remainder of the conductors before bending into place after stress cone

since the stress cone will take up close to 9", that would leave about 20" uncovered copper tape shield...i personally don't like to see copper in any HV/LV area

so what yout tought on this....
 
the conductor has no coating over the copper tape shield...once the outer armor of the 3/c cable is removed
unless he order the wrong kit...there was not an included heat shrink tube to apply to the conductor to cover the copper tape shield.

so you have the 2 1/2" for the lug + cut back of 6 1/2": 1 1/2" for copper tape shield, 1/2" for semi con, leaving 4 1/2" of insulator (pinkie).

unless you apply heak shrink over the condutor first the copper tape shield will not be covered and subject to damage and corrosion
 
ledsd said:
the conductor has no coating over the copper tape shield...once the outer armor of the 3/c cable is removed
unless he order the wrong kit...there was not an included heat shrink tube to apply to the conductor to cover the copper tape shield.

so you have the 2 1/2" for the lug + cut back of 6 1/2": 1 1/2" for copper tape shield, 1/2" for semi con, leaving 4 1/2" of insulator (pinkie).

unless you apply heak shrink over the condutor first the copper tape shield will not be covered and subject to damage and corrosion
Click to expand...

Not to mention that the uneven coverage will produce uneven stresses and results in development of failure points. Apply evenly wound semi-con tape over it or HS-it.
 
ledsd said:
the conductor has no coating over the copper tape shield...once the outer armor of the 3/c cable is removed
unless he order the wrong kit...there was not an included heat shrink tube to apply to the conductor to cover the copper tape shield.

so you have the 2 1/2" for the lug + cut back of 6 1/2": 1 1/2" for copper tape shield, 1/2" for semi con, leaving 4 1/2" of insulator (pinkie).

unless you apply heak shrink over the condutor first the copper tape shield will not be covered and subject to damage and corrosion
Click to expand...

WIth those measurements, I believe he bought the wrong terminations as Bama suggested.

I am not saying this is the right termination, but take a look here:http://energy.te.com/rrg/raychem_rrg/724189.pdf

Also, look here:http://www.transnet.co.nz/media/pdf/epkt_guide.pdf

http://www.te.com/catalog/pn/en/044191-000?RQPN=MOD-3X-HVT
 
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