Research And Development Of Strain Clamp And Connecting Tube Of 1520mm(2) Large-Section Conductor

+/- 1100kV Ultra-high Voltage DC Engineering will adopt JL1X/G2A-1520/125-481 large-section aluminum twisted line of steel core, 1520 mm(2) large-section aluminum twisted line of steel core is of four-layer structure and has the same aluminum strand layers of 900 mm(2) and 1000 mm(2) large-section aluminum twisted lines of steel core applied in the previous engineering, but the armor clamp grip cannot be easily guaranteed due to its large aluminum section. By virtue of design optimization, trial-manufacture and test & research of strain clamp and connecting tube, the grip of researched & developed supporting strain clamp and connecting tube of 1520mm(2) aluminum twisted line of steel core in this Paper meets 95% RTS.