230 kV cable buyers in Tennessee
The constructions behind a 230 kV cable lot, why almost every 230 kV circuit is overhead, and what such a lot actually contains once it is opened.
Send us your reel list
Six details are enough for a first review: what the cable is, the metal, the size, the footage or reel count, the condition and where it sits. Photographs can follow by text or email. There is no fee and no obligation, and nothing moves until written terms are agreed.
Two hundred and thirty kilovolt cable belongs to an earlier generation of transmission design. Where it exists it is paper-insulated, either lead-covered and directly buried or drawn into a steel pipe and held under oil pressure, and it was installed when a crossing or a station approach could not be built overhead. Very little of it was made after the 1980s.
A lot at this voltage is therefore a legacy lot. It is heavy, it is often obsolete in design, and it may not be usable at all. What it does have is a large copper conductor and, in the paper-insulated case, a lead sheath, and those two metals are frequently the most reliable part of the valuation.
Lot basics
- Voltage
- 230 kV
- Constructions
- PILC and HPFF
- Conductor
- Copper, large strand
- Typical lengths
- Short station runs
The two constructions you will meet
Paper-insulated lead-covered cable, known as PILC, wraps oil-impregnated paper around a stranded conductor, screens it, and encloses the whole in a lead sheath with a protective oversheath. It is a solid, heavy cable that relies on the sheath to keep moisture out of the paper. At 230 kV the insulation wall is thick and the drum is large.
High-pressure fluid-filled cable takes a different approach. The insulated conductor is drawn into a steel pipe, the pipe is filled with insulating oil under pressure, and the oil both insulates and suppresses voids in the paper. The pipe is the pressure vessel. A 230 kV HPFF installation includes pumps, pressure tanks and oil treatment equipment that have nothing to do with the cable itself.
Why so little 230 kV went underground
Cost and repair time decided it. An overhead 230 kV line is built from steel structures and conductor, and a fault can be found and repaired in days. An underground circuit needs a continuous trench or pipe, terminations at both ends, pressurization equipment and a specialised crew, and a failure can take weeks to locate and splice.
The result is that 230 kV cable exists in fragments: a station exit, a crossing under a waterway or a major road, a short link between two yards. Those fragments are why a 230 kV cable lot is usually short, and why it is often tied to a specific decommissioning project rather than to general store surplus.
What a lot at this voltage actually holds
Expect short lengths, terminations, potheads and fittings. A removed 230 kV circuit may yield several hundred feet of cable in two or three pieces, a set of porcelain or composite terminations, splice kits that were never used, and a quantity of oil-contaminated paper and sheath. The cable is likely to have been cut to remove it, so the lengths are what they are.
Reuse is possible only for a utility running the same design, and those utilities are few. More often the value is in the copper conductor, the lead sheath and the steel pipe, with the paper and oil handled as a waste stream. We quote such lots as recovery material unless there is a documented reason to treat the cable as reusable.
- Short cable lengths, often cut during removal
- Terminations, potheads and unused splice kits
- Oil-contaminated paper and lead sheath for separation
- Steel pipe sections where the circuit was pipe-type
Questions sellers ask
Is 230 kV cable still manufactured?
It can be, but rarely in the constructions described here. Modern underground transmission at this voltage would use XLPE cable made to order, and the older paper and pipe-type designs are supported rather than newly built. A surplus lot is almost always legacy material from an installation of several decades ago.
Can lead-sheathed 230 kV cable be reused?
Only in a narrow set of cases, and never without testing. The paper must be dry, the sheath intact and the terminations rebuildable to the same design. Most utilities will not return aged paper cable to service at this voltage, so the copper and lead are usually the practical value.
How is a pipe-type circuit removed?
The oil is drained and handled first, then the pipe is opened at splice points and the cable pulled in sections. The pipe itself is scrap steel, and the cable goes for conductor and lead recovery. Removal is planned as a fluid-handling job before it is a cable job.
What documentation helps on a legacy cable lot?
Original drawings, cable schedules, the installation year and any test history. They establish the conductor size, insulation type and whether the circuit was in service recently. Even a nameplate photograph from the termination helps, because the fittings often identify the cable design better than the cable itself.
Send us your reel list
Six details are enough for a first review: what the cable is, the metal, the size, the footage or reel count, the condition and where it sits. Photographs can follow by text or email. There is no fee and no obligation, and nothing moves until written terms are agreed.
Legacy 230 kV cable to clear?
Send the construction, cable schedule, lengths and photographs of the terminations and the sheath in place.
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