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MEGATRO 1000KV 10GB1 SJ3 double circuit tension Transmission tower
This photo refers to our 1000KV 10GB1 SJ3 double circuit tension Transmission tower, it is widely used in our Chinese market. Some of technical features of this tower as follow:
1 climate condition
Item |
Temperature (℃) |
Wind speed (m/s) |
Ice thickness (mm) |
Max. temperature |
40 |
0 |
0 |
Mini. temperature |
-20 |
0 |
0 |
Ice thickness |
-5 |
10 |
10 |
Basic wind speed |
-5 |
27 |
0 |
Installation condition |
-10 |
10 |
0 |
Annual temperature |
15 |
0 |
0 |
Lightning overvoltage |
15 |
10 |
0 |
Operation overvoltage |
15 |
16 |
0 |
2 Technical specification of conductor and OPGW
|
Item |
Conductor |
OPGW |
|
JL/G1A-630/45 |
JLB20A-240 |
||
|
construction |
AL |
45×3.76 |
--- |
Steel(Al wrap steel ) |
7×2.81 |
19×4.0 |
|
|
Cross-section (mm2) |
Al |
630.00 |
59.69 |
Steel |
43.6 |
179.07 |
|
Total |
674.00 |
238.76 |
|
Diameter |
33.80 |
20.01 |
|
Length mass (kg/km) |
2079.20 |
1595.5 |
|
Elastic module (MPa) |
63000 |
63000 |
|
coefficient of linear expansion (1/℃) |
20.9×10-6 |
13.0×10-6 |
|
Rated broken (N) |
150450 |
260010 |
|
3 tower design data
|
Tower type |
Nominal Height (mm) |
Horizontal span (m) |
Vertical Span (m) |
Angle º |
Nominal height tower weight Kg |
10GB1-SJ3 |
54 |
400 |
500 |
0 |
111569 |
4 type and force of conductor and OPGW
|
Power voltage |
1000KV |
Conductor type |
8×JL/ GIA-630/45 |
Max. operation Tension force (KN/phase) |
457.368 |
Un-balance Stress value(%) |
30 |
|
OPGW Type |
JLB20A-240 |
Max. operation Tension force (KN/pc) |
68.424 |
Un-balance Stress value(%) |
40
|
5 Operation data
|
Item
|
Horizontal span (m) |
Vertical Span (m) |
Representative Span (m) |
Angle º |
Height (m) |
KV |
data |
500 |
650 |
300/600 |
20-30 |
45 |
---- |
6 loading data
|
Site condition |
Normal operation condition |
Accident condition |
Installation condition |
Uneven icing |
|||||
Basic wind speed |
Ice |
Mini. temperature |
Non- broken |
broken |
|||||
|
Climate condition (t/v/b) |
-5/27/0 |
-5/10/10 |
-20/0/0 |
-5/0/10 |
-5/0/10 |
-10/10/0 |
-5/10/10 |
||
Horizontal loading |
conductor |
298728 |
263881 |
174812 |
236742 |
0 |
297441 |
263881 |
|
|
Insulator Power fitting |
5898 |
809 |
0 |
0 |
0809 |
809 |
|||
OPGW |
38611 |
38351 |
28875 |
33648 |
0 |
3303 |
38351 |
||
conductor |
231290 |
306929 |
228875 |
306929 |
306929 |
526880 |
230197 |
||
|
Vertical loading
|
Insulator Power fitting |
53936 |
64723 |
53936 |
53936 |
53936 |
53936 |
64723 |
|
OPGW |
15764 |
23902 |
15944 |
23902 |
23902 |
33906 |
17926 |
||
Stress force |
conductor |
One side |
388673 |
443842 |
363219 |
315281 |
0 |
25753 |
450401 |
The other side |
376691 |
450401 |
301942 |
315281 |
0 |
22754 |
315281 |
||
Stress differences |
11982 |
6559 |
61277 |
315281 |
2999 |
135120 |
|||
Stress force |
OPGW
OPGW |
One side |
59238 |
64015 |
60811 |
64015 |
0 |
4104 |
64015 |
The other side |
54564 |
64015 |
48987 |
64015 |
0 |
3418 |
38409 |
||
Stress differences |
4674 |
0 |
11824 |
64015 |
686 |
25606 |
|||
7 Foundation distance size
|
Nominal Height (m) |
Foundation distance (mm) |
Anchor bolt |
|||
|
Front distance |
Side distance |
Type and quantity |
Distance /radius (mm) |
Material |
|
36 |
18200 |
18200 |
16×M60 |
470.5 |
Chinese type 45 steel |
39 |
19040 |
19040 |
|||
42 |
19880 |
19880 |
496 |
||
45 |
20720 |
20720 |
|||
48 |
21560 |
21560 |
|||
51 |
22400 |
22400 |
|||
54 |
26240 |
26240 |
|||
8 Foundation force
|
Nominal Height (m) |
Tx |
Ty |
T |
Nx |
Ny |
N |
36 |
884 |
864 |
5536 |
1204 |
1190 |
7664 |
39 |
884 |
864 |
5580 |
1204 |
1187 |
7707 |
72 |
880 |
820 |
5556 |
1205 |
1134 |
7835 |
45 |
882 |
824 |
5598 |
1207 |
1138 |
7877 |
48 |
884 |
828 |
5637 |
1208 |
1142 |
7916 |
51 |
881 |
827 |
5657 |
1216 |
1143 |
7999 |
54 |
883 |
833 |
5691 |
1218 |
1151 |
7994 |
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