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MEGATRO 1000kV 10A1 JC3 SC tension transmission tower
This photo refers to our 1000kV 10A1 JC3 SC 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-500/35 | JLB20A-170 | ||
construction | AL | 45×3.76 | |
Steel(Al wrap steel ) | 7×2.51 | 19×3.4 | |
Cross-section (mm2) | Al | 500.00 | 43.13 |
Steel | 34.60 | 129.37 | |
Total | 535.00 | 172.5 | |
Diameter | 30.11 | 17.01 | |
Length mass (kg/km) | 1650.2 | 1152.0 | |
Elastic module (MPa) | 63000 | 147200 | |
coefficient of linear expansion (1/℃) | 20.9×10-6 | 13.0×10-6 | |
Rated broken (N) | 119410 | 203380 | |
3 tower design data
Tower type | Nominal Height Scope (mm) | Horizontal span (m) | Vertical Span (m) | Angle º | Nominal height tower weight Kg |
10A1 JC3 | 42 | 550 | 800 | 0～20 | 93551 |
4 type and force of conductor and OPGW
Power voltage |
1000KV
| Conductor type | 8×JL/ GIA-500/35 | Max. operation Tension force (KN/phase) |
363.006 |
Un-balance Stress value(%) |
30 |
OPGW Type | JLB20A-170 | Max. operation Tension force (KN/pc) | 56.827
| Un-balance Stress value(%) |
40
|
5 Operation data
Item
| Horizontal span (m) | Vertical Span (m) | Representative Span (m) | Angle º | Height (m) |
KV
|
data | 550 | 800 | 650/350 | 40~70 | 45 | / |
6 loading data
Site condition | Normal operation condition | Accident condition | Installation condition | ||||||
Basic wind speed | Ice | Mini. temperature | Non- broken | broken | |||||
Climate condition (t/v/b) | -5/27/0 | -5/10/10 | -20/0/0 | 0/0/0 | 0/0/0 | -10/10/0 | |||
Horizontal loading | conductor | 8367 | 17723 | 0 | 0 | 0 | 10402 | ||
Insulator Power fitting | 7439 | 777 | 0 | 0 | 0 | 648 | |||
Jump & string | 16180 | 3410 | 0 | 0 | 0 | 2000 | |||
OPGW | 6850 | 1980 | 0 | 0 | 0 | 870 | |||
Vertical loading
| conductor | 176374 | 257349 | 176374 | 162879 | 162879 | 176374 | ||
Insulator Power fitting | 76666 | 90161 | 76666 | 90161 | 90161 | 76666 | |||
Jump & string | 24510 | 33350 | 24510 | 24510 | 24510 | 24510 | |||
OPGW | 13090 | 21210 | 13090 | 13090 | 13090 | 13090 | |||
Climate condition (t/v/b) | -5/27/0 | -5/10/10 | -20/0/0 | 0/0/0 | 0/0/0 | -10/10/0 | |||
Stress force | conductor | One side | 328370 | 379690 | 279430 | 259310 | 0 | 309500 | |
The other side | 293920 | 351910 | 2212230 | 259310 | 0 | 309500 | |||
Stress differences | 34450 | 27780 | 58200 | 0 | 259310 | 90410 | |||
OPGW | One side | 42970 | 48050 | 46220 | 47410 | 47410 | 47460 | ||
The other side | 47460 | 57360 | 38760 | 47410 | 0 | 38160 | |||
Stress differences | 4490 | 9310 | 7460 | 0 | 47410 | 930 | |||
7 Foundation distance size
Nominal Height (m) | Foundation distance (mm) | Anchor bolt | |||
Front distance | Side distance | Type and quantity | Distance /radius (mm) | Material | |
36 | 15360 | 15360 |
8×M68
| S1=360 S2=210 |
Chinese type 35 steel |
39 | 16200 | 16200 | S1=360 S2=210 | ||
42 | 17040 | 17040 | S1=360 S2=210 | ||
45 | 17880 | 17880 | S1=360 S2=210 | ||
8 Foundation force
Nominal Height (m) | Tx | Ty | T | Nx | Ny | N |
36 | 754 | 613 | 3927 | 922 | 698 | 4825 |
39 | 733 | 589 | 3984 | 907 | 705 | 4901 |
42 | 752 | 616 | 4025 | 924 | 714 | 4970 |
45 | 745 | 616 | 4069 | 911 |
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