c)
Standard weight (Kg/km)
432(7/3.15) and 583(7/3.66)
d)
Location of ground wire
One continuous ground wire
Wire to run horizontally on the
top of the towers for 132 and
220 KV and two ground wire for
400 KV lines.
e)
Tensile load in each ground wire
(to be furnished by the Bidder)
i) At min. temp. of 5˚ C and in still
air (kgs)
ii) At every day temp. of 32˚ C and
still air (kgs)
iii) At 5˚ C and 2/3rd of full wind
(kgs)
1.1.8.1 Towers
a)
Span lengths in metres
i) Ruling design span
b)
Wind load (kg/sqm) on conductor
ACSR
Zebra
300
52
ACSR
Moose
300
52
ACSR
Panthe
r
250
52
c)
Shielding angle with vertical
20˚
20˚
20˚
d)
Towers to be designed for heavy V-zone
wind zone
V-zone
v-zone
1.1.8.2 Insulator Strings(Disc)(Antifog type)
Sl. Particulars
Single
No.
Suspensi
on string
1.
No. of standard Discs
(nos)
1)
400 KV
1X25
2)
220 kV
1X15
3)
132 Kv
1X10
2.
Size of Disc
(400kv/220kV/132 kv) 280x145/
255X145/
255X145
3.
Electromechanical
120/90/9
strength (KN)
0
(400 KV/220 kV/132
VOL-III (TS)
Double
suspension
string
2X25
2X15
2X10
Single
Tension
string
1X25
1X15
1X10
305x170/
305x170/
255X145/ 280x145
280x145/
255X145
120/90/90
Double
Tension
string
2X25
2X15
2X10
305x170/3
05x170/28
0x145
160/160/ 160/160/12
120
0
E26-TRANSMISSION LINE- Page 21 of 84