Corridor Scenario
A 110kV single-circuit corridor in Phnom Penh can be modeled as roughly 9km of line using about 57 steel tubular poles. That count follows the specified 150m average span, with urban and suburban routing constraints limiting how far each structure can be pushed. For procurement teams, this is not a 10-35kV distribution pole package, and it is not a 220kV bulk-transmission structure set. It fits the sub-transmission layer that links substations, supports ring supply around load centers, and feeds industrial zones.
The city context matters because the alignment sits near 11.56, 104.92, close to the Mekong-Tonle Sap confluence and low-elevation terrain. A 2019 population figure of about 2.13 million also explains why corridor width, installation sequence, and maintenance access become design inputs rather than afterthoughts.
Engineering Configuration
| Parameter | Spec |
|---|---|
| Line class | 110kV single circuit |
| Route and structures | About 9km with approximately 57 poles |
| Pole geometry | 35m tapered steel tubular pole, above the usual 18-30m range for standard 66-110kV lines |
| Structure mass | About 21t per pole; 600kg/m structural linear mass |
| Material | Hot-dip galvanized Q345 steel |
| Conductor | ACSR 240, about 920kg/km, 70kN maximum tension |
| Electrical clearance | 4m phase spacing, 1.5m insulator length, 6m ground clearance |
| Loading and standards | Wind Class 2 at 30m/s; IEC 60826 wind load design, GB 50545, DL/T 5092 |
| Foundation and accessories | Anchor-bolt cage foundation, bird guards, vibration dampers |
| Service life | 30 years |
The 35m height and roughly 21t pole weight place this configuration in a heavy-duty backbone category. In a constrained urban corridor, a steel tubular power transmission pole 35m layout can reduce right-of-way pressure compared with lattice structures, while still keeping phase spacing and ground clearance explicit in the drawings.
Procurement Notes
For Phnom Penh’s alluvial and reclaimed-soil conditions, the anchor-bolt cage foundation is part of the technical scope, not a site-detail placeholder. The 30m/s Wind Class 2 basis should be checked together with conductor tension, pole mass, and foundation design because these items interact structurally.
A buyer comparing tubular poles with lattice towers should evaluate right-of-way width, erection time, visual impact in urban districts, and access for inspections. Steel tonnage alone is not enough: the specified Q345 steel, hot-dip galvanizing, ACSR 240 conductor, vibration dampers, and bird guards define a complete asset package with a 30-year service target.
For SOLARTODO, the relevant procurement question is whether the selected package can hold the 110kV corridor geometry while fitting land, soil, and maintenance constraints. Review the detailed configuration here: Phnom Penh Power Transmission Tower
