Galvanized Angle Steel Transposition Tower

Qingdao Anbang New Energy’s Galvanized Angle Steel Transposition Tower selects high-strength national standard galvanized angle steel as the core load-bearing component. The overall structure has been optimized through professional mechanical calculations and design, mainly for 110kV to 500kV high-voltage and ultra-high-voltage AC transmission line scenarios, specifically used to achieve orderly phase shifting of three-phase conductors.

It effectively addresses issues caused by asymmetric conductor arrangement during long-distance transmission, such as unbalanced capacitive current, excessive line loss, voltage fluctuations, and relay protection anomalies, thus improving power grid transmission efficiency from the source and ensuring the long-term safe, stable, and reliable operation of the transmission system.

The product uses a mature hot-dip galvanizing anti-corrosion process throughout, with a uniform and dense zinc layer that adheres strongly, greatly enhancing corrosion and aging resistance, and adapting to harsh and complex environments such as coastal high-salt fog, industrial pollution areas, and cold snowy climates.

Leveraging Qingdao Anbang New Energy’s modern production base, standardized and factory-precision manufacturing is achieved, with strict quality control processes applied from raw material cutting, punching, and welding to galvanizing and trial assembly, effectively ensuring component accuracy and consistency.

This galvanized angle steel phase-shifting tower can fully adapt to different voltage levels, terrain conditions, and line design requirements, and while offering excellent structural strength and wind and earthquake resistance, it also considers on-site assembly convenience and future maintenance ease, making it a safe, efficient, and cost-effective preferred solution for various transmission line phase-shifting renovations and new construction projects.

Core Advantages

Corrosion Resistance, Long Service Life

Uses hot-dip galvanizing with a zinc layer thickness ≥85μm, forming a dense protective layer that provides both physical barrier and electrochemical protection.

Outdoor maintenance-free life exceeds 30 years, suitable for harsh environments such as coastal and industrial areas.

Stable Structure

Made of high-strength Q235/Q345 galvanized angle steel as the base material, with a lattice design.

Wind resistance ≥30 m/s, ice coverage resistance ≥8 mm, seismic intensity 8, meeting load requirements in complex terrains and extreme climates.

Convenient Maintenance

Galvanized Angle Steel Transposition Towers use a modular phase-separation design, enabling precise three-phase conductor switching without jumper wires.

The structure is simple, significantly improving construction and maintenance efficiency.

Factory Manufacturing and Quality Control

Qingdao Anbang New Energy owns its factory, with fully standardized production. From raw material inspection to finished galvanizing and assembly, the process strictly follows national standards, ensuring consistent performance of each galvanized angle steel phase-switching tower.

Flexible Customization

Tower type, height, and phase-switching method can be customized according to line voltage level, span distance, and terrain conditions, suitable for various power transmission line phase-switching projects.

Product Working Principle

The galvanized angle steel phase-shifting tower is a specialized tower used in power transmission lines to achieve phase interchange of three-phase conductors.

In long-distance AC transmission lines, three-phase conductors can cause unbalanced capacitive currents due to asymmetric arrangement, leading to increased grid losses, false operation of relay protection, and other issues.

The tower arranges conductor suspension points at different heights and positions on the tower body, allowing A, B, and C phase conductors to orderly swap positions as they pass through the tower.

This achieves periodic phase shifting, balances the three-phase capacitive currents, reduces line losses, and improves transmission efficiency and operational stability of the power grid.

Its core relies on the high strength and stability of galvanized angle steel to ensure that conductor tension and spacing meet safety standards during the phase-shifting process.

Product Details

Component Processing

All angle steel components of the Galvanized Angle Steel Transposition Tower are precisely cut, punched, and bent, with dimensional tolerances in accordance with GB/T 9787 to ensure assembly accuracy.

Corrosion Protection

After rust removal, the components are immersed in molten zinc at 450-460°C, forming a zinc-iron alloy layer with uniform coverage without missed plating or zinc bulges. Dead corners such as bolt holes and welds are fully protected.

Tower Structure

The tower uses a lattice truss structure, with a reasonable layout of main members, diagonals, and crossarms, clearly defined stress paths, and precise placement of phase-shifting suspension points to ensure safe spacing of conductors during phase shifting.

Accessory Configuration

Equipped with hot-dip galvanized bolts, washers, foot nails, ladders, and other accessories with corrosion resistance consistent with the tower, preventing electrochemical corrosion.

Factory Inspection

Each galvanized angle steel phase-shifting tower undergoes dimensional inspection, mechanical testing, galvanizing thickness measurement, and trial assembly verification, and can only leave the factory after passing these tests.

Product Specifications