So just what do you do in a case like that? Blast? Design to have most of the bend above ground? Do an offset bend or a mostly horizontal bend and come in from the side? The world wants to know.
Cables had to be vertical as possible to fit the pre-manufactured stress cones/ terminators with no forces or weight hanging on the termination or the warranty was void. The contractor had to raise the transformer end terminations by extending the lattice work support structure enough to fit in an S bend in the cable. They added some gimbal mounted clamps to secure the cable in that shape. Fortunately, the transformers did not have enclosed 230 kV termination boxes (oil-filled or SF6) and just had ACSR jumper cables through the air from the top mounted HV bushings to the cable terminations? air terminals. There was enough clearance to handle the extra height, just needed longer jumpers. We were also fortunate that there was enough cable sticking up to provide the needed length.
The solution at the switchyard end was to relocate the structure more in line with the conduit which allowed the bend to finish above ground and line up vertically. That end was skewed in more than one axis before the fix.
The original design solution would have been to blast deeper to slope the conduit down deep enough before starting the upward sweep, or to design the termination structure and surrounding structures so the conduit bend could come out of the ground at a 45 degree angle and finish the sweep in the air with suitable cross brace anchor points.
Many installations of this type of cable don?t use conduit and direct bury the HV cable in a trench with thermal backfill.
They also get plenty of room at the terminations.
