We buy surplus 345 kV cable

Cable at 345 kV is bought in a small number of places for a small number of jobs: a major substation tie, a long crossing under a waterway or a highway, or an urban section where an overhead line cannot go. Each pull is engineered, each length is measured, and each reel arrives with paperwork attached to it.

That makes surplus at this level unusual and easy to mishandle. A reel that has lost its documentation is not the same asset as one that still has it. We review the construction, the sheath system and the storage record before anything is said about the lot, and a site visit comes before a firm position.

Where 345 kV cable actually comes from

Major substation ties and long underground crossings are the two sources. Both involve conductor sizes at the top of the range, insulation built up in layers, a metallic sheath and an oversheath, and often a moisture barrier that has to stay intact for the cable to be usable at all.

Because the quantities are small, a cancelled or deferred project can leave one or two reels sitting for years. Those reels are the ones worth a careful review. A single drum at this level carries more review time than a full rack of distribution cable, and it deserves it.

Sheath, armour and the moisture barrier before any offer

The sheath system is the whole game at this voltage. A metallic sheath, an armour layer where the design calls for one, and an oversheath over the top. Any breach lets moisture reach the insulation, and moisture in this class of cable does not announce itself until the cable fails a test.

So the checks are physical and documented. Look for scuffs through the oversheath, dents where a roller or a clamp pressed too hard, corrosion at a sheath joint and water inside an open end. Then match what you find against the test record, if there is one.

Coordinating a pickup that needs a lowboy and a crane

A full reel in this class is heavy enough that handling is a project of its own. It needs a lowboy or a step deck, a crane or a large forklift at each end, and a route that can take the load. Lifting points on the drum, not the lagging, and a spreader bar if the reel is wide.

Tell us the ground conditions at your end before a pickup is planned. A yard with a soft base after rain, a low overhead line or a gate too narrow for a trailer changes the equipment list. Getting that right in advance is the difference between one visit and three.

The 345 kV work around Austin sits at the outer substations, reached by the SH-130 loop and the county roads east of it, with river crossings that put cable underground for short stretches. Laydowns for those jobs are large, fenced and usually some distance from the city center.

A reel that has been at one of those sites for a season will have seen heat and dust. That is normal and it is not disqualifying. What matters is whether the drum was kept off the ground and the ends stayed capped. Say how it was stored and the review can proceed on facts.