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MEGATRO 500KV 5A2 ZBC4 suspension transmission tower
This photo refers to our 500KV 5A2 ZBC4 suspension 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 | -40 | 0 | 0 |
Ice thickness | -5 | 10 | 10 |
Basic wind speed | -5 | 27 | 0 |
Installation condition | -15 | 10 | 0 |
Annual temperature | -5 | 0 | 0 |
Lightning overvoltage | 15 | 10 | 0 |
Operation overvoltage | -5 | 15 | 0 |
Hot-line work | 15 | 10 | 0 |
2 tower design data
Tower type | Nominal Height scope (mm) | Nominal Height (mm) | Horizontal span (m) | Vertical Span (m) | Allowed Angle º | Insulator Type
| Horizontal Span at angel condition |
5A2 ZBC4 | 27～42 | 39 | 440 | 550 | / | I type and (long rod insulator ) | / |
42 | 420 | 550 | |||||
Conductor type: 4×LGL-400/35 | OPGW: JLB-150 | ||||||
3 Tower estimated weight and foundation force
Tower Type | Tower weight scope (kg) | Foundation force scope (KN) | |||||
Tmax | Tx | Ty | Nmax | Nx | NY | ||
5A2 ZBC4 | 19605～31425 | 134～148 | 109～140 | 100～140 | 1060～1296 | 132～168 | 123～160 |
4 Here is the design strength of Chinese tower steel
Steel material | tensile, bending and press strength (N/mm2) | shear strength (N/mm2) | |
Grade | Thickness or diameter (mm) | ||
Q235 Steel | ≤16 | 215 | 125 |
>16～40 | 205 | 120 | |
>40～60 | 200 | 115 | |
>60～100 | 190 | 110 | |
Q345 Steel | ≤16 | 310 | 180 |
>16～35 | 295 | 170 | |
>35～50 | 265 | 155 | |
>50～100 | 250 | 145 | |
Q420 Steel | ≤16 | 380 | 220 |
>16～35 | 360 | 210 | |
>35～50 | 340 | 195 | |
>50～100 | 325 | 185 | |
Q460 Steel | ≤16 | 415 | 240 |
>16～35 | 395 | 230 | |
>35～50 | 380 | 220 | |
>50～100 | 360 | 210 | |
MEGATRO is a full service engineering company with a global reputation for delivering excellence and innovation in power transmission, transformation, distribution, and telecommunications systems. Our MEGATRO provide and design this type 500KV 5A2 ZBC4 suspension transmission tower mainly for our Chinese and overseas client. Since 2004, MEGATRO focus mainly international market and had export many kind of transmission structures to overseas clients. MEGATRO has been manufacturing lattice transmission tower & tapered steel poles for lighting, traffic control, communication and utility applications. MEGATRO pioneered the development of transmission tower, telecom tower, substation, and other steel structure and was also at the forefront in the design of Transmission tower.
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