SA-YZ70 Hydraulic Cable Tensioner for Overhead Conductor Stringing The SA-YZ70 is a hydraulic cable tensioner for stringing conductors and ground wires on overhead transmission lines. Infinitely variable tension control allows constant-tension stringing of one or two bundled conductors, and two hydraulic power output interfaces connect hydraulic conductor reel stands for a complete tension-stringing setup. Technical Specifications Model SA-YZ70 Hydraulic Tensioner (SA-YZ2x35)