Characteristics of Rainfall in Wind Field of a Downburst and Its Effects on Motion of High-Voltage Transmission Line

Table 2

Main structural parameters of the typical tower-lines structures.

No	(1)	(2)	(3)	(4)
L (m)	2580	3401	2718	1985
Sp (m)	500-1580-500	840-1750-856	509-1733-476	518-2052-415
T (m)	191	201	201	246
Su (kN)
St (kN)
M (m)	18	18	18	18
D (mm)/(kg/m)	39.58/4.1	39.58/4.1	39.58/4.1	39.58/4.1

Note. L: length between two strain towers; Sp: span; T: tower height; Su: suspension insulator string; St: strain insulator string; M: minimum clearance; D: diameter/mass per unit length.