... intermediate-voltage crosslinked cable for 3-core, 4-core, 5-core, “4+1”core, “3+2”core with a cross-section range of ... -grade of speed change, has a linkage with major transmission shaft Undergrond, with functions of right & left directions and in ... drive system includes main motor, major speed reducer, transmission shaft underground, shaft coupling, protective housing, etc.8. Electric control system ...