22m 35kV Steel Lattice Distribution Tower — Double Circuit Tangent

The SOLARTODO 22m 35kV Distribution Double Circuit Power Tower is a high-performance steel lattice structure engineered for suburban power distribution networks. Standing at 22 meters tall, this tangent suspension tower supports two circuits of 35kV medium-voltage transmission lines, connecting substations to local distribution grids. Constructed from hot-dip galvanized Q420/Q460 steel angle bars, it delivers a 50-year design life compliant with IEC 60826, GB 50545, and ASCE 10-15.

The lattice framework features an open triangular/square cross-section that is wider at the base (~4.5 m) and tapers toward the top, distributing vertical conductor loads and transverse wind loads efficiently. Two sets of horizontal cross-arms at the apex support six ACSR conductor strings (three per circuit) via suspension insulator I-strings, allowing natural conductor swing under wind loading. An OPGW ground wire at the tower peak provides simultaneous lightning protection and fiber-optic communication capability. Tower footing resistance is maintained below 10 ohms standard, or below 4 ohms for high-lightning-activity zones.

Clients may select porcelain disc insulators (proven reliability, 50+ year service) or composite polymer insulators (30% lighter, vandal-resistant, superior pollution flashover performance). The standard design span is 120 m, optimized for suburban distribution corridors. The double-circuit configuration doubles power delivery capacity within a single right-of-way, reducing land acquisition costs by up to 40% compared to two separate single-circuit lines. Compared to concrete distribution poles of equivalent height, the steel lattice design reduces structural material volume by approximately 30% while achieving superior load ratings.

A regional utility operator in Southeast Asia deployed a 15-tower SOLARTODO 35kV double-circuit network to upgrade sub-transmission infrastructure serving 12,000 new residential connections. The modular bolted assembly allowed erection of each tower in under two days without heavy crane equipment, reducing total construction time by 25% versus cast-in-place concrete alternatives.

EPC Investment Analysis and Pricing Structure

SOLARTODO's EPC Turnkey package covers engineering design, all structural and electrical equipment, international shipping, concrete foundation construction, tower erection, conductor stringing, commissioning, testing, and a 1-year comprehensive warranty. Three pricing tiers are available:

Volume discounts: 50-99 units = 5%; 100-249 units = 10%; 250+ units = 15%. Payment: 30% T/T advance + 70% T/T against B/L copy, or 100% L/C at sight. Financing available for projects exceeding $1,000,000 via SINOSURE. Contact: cinn@solartodo.com | solartodo.com