220 kV OVERHEAD LINE UNIT DATA Line conductor: 1 x Canary Required Offered 9.0 TOWER DESIGN PARTICULARS 9.1 Maximum tension per for purposes of tower design a. Suspension towers b. Tension towers c. Downleads per conductor bundle 9.2.1 Maximum tension per earth conductor for purpose of tower design and application: ACS Earthwire a. Suspension towers b. Tension towers c. Earth conductor downleads 9.2.2 Maximum tension per earth conductor for purpose of tower design and application: OPGW a. Suspension towers b. Tension towers c. OPGW downleads 9.3 Minimum clearance between live metal and tower steelwork:- a. with suspension insulator set swing, at 65º mm 500 b. with suspension insulator set swing, 0 - 10º mm 2150 c. with suspension insulator set swing 10 - 35º mm 1500 9.4 Minimum Clearance to steelwork on which a man may stand m 3.9 for live line maintenance (crossarm floor) 9.5 Downleads minimum clearances: – phase to phase clearance in still air mm 3500 to phase clearance under conditions of maximum mm 2650 (opposing) swing and sag 9.6 Earth conductor suspension clamps, unobstructed transverse degrees 0 50 – swing angle from vertical 9.7 Earth conductor maximum shielding angle from vertical at degrees 3 tower attachment point over outer line conductors 9.8 Maximum ratio of unsupported length of steel compression member to their least radius of gyration: a. Main members 120 b. Stressed bracings 200 c. Unstressed bracings 250 d. Tension only members, detailed with draw 500 9.9 Maximum ultimate stresses, for checking tower designs not subjected to test (unless otherwise approved):- 9.9.1 Mild Steel:
220 kV OVERHEAD LINE UNIT DATA Line conductor: 1 x Canary Required Offered 9.0 TOWER DESIGN PARTICULARS 9.1 Maximum tension per for purposes of tower design a. Suspension towers b. Tension towers c. Downleads per conductor bundle 9.2.1 Maximum tension per earth conductor for purpose of tower design and application: ACS Earthwire a. Suspension towers b. Tension towers c. Earth conductor downleads 9.2.2 Maximum tension per earth conductor for purpose of tower design and application: OPGW a. Suspension towers b. Tension towers c. OPGW downleads 9.3 Minimum clearance between live metal and tower steelwork:- a. with suspension insulator set swing, at 65º mm 500 b. with suspension insulator set swing, 0 - 10º mm 2150 c. with suspension insulator set swing 10 - 35º mm 1500 9.4 Minimum Clearance to steelwork on which a man may stand for live line maintenance (crossarm floor) m 3.9 9.5 Downleads – minimum clearances: phase to phase clearance in still air mm 3500 to phase clearance under conditions of maximum (opposing) swing and sag mm 2650 9.6 Earth conductor suspension clamps, unobstructed transverse swing angle from vertical degrees 0 – 50 9.7 Earth conductor maximum shielding angle from vertical at tower attachment point over outer line conductors degrees 3 9.8 Maximum ratio of unsupported length of steel compression member to their least radius of gyration: a. Main members 120 b. Stressed bracings 200 c. Unstressed bracings 250 d. Tension only members, detailed with draw 500 9.9 Maximum ultimate stresses, for checking tower designs not subjected to test (unless otherwise approved):- 9.9.1 Mild Steel:
Appendix_13_Schedules_of_Technical_Information_LILO_to_KOMAROCK.docx