15kV Dead End Suspension Tongue and Clevis

Utility-grade dead-end / suspension fitting for distribution up to 15 kV. ASTM A36 steel, ≥40 kN tensile, hot-dip galvanized.

Voltage: 15 kV
Tensile: ≥ 40 kN
Material: ASTM A36 steel
Finish: Hot-dip galvanized
Tolerance: ±0.1 mm (critical)

Description

Function in the Field
At the end of a 15 kV insulator string, this tongue‑and‑clevis assembly transfers mechanical load from the conductor to the tower arm. Its design ensures the string remains under proper tension, preventing conductor sway and reducing fatigue on adjacent hardware.

Engineering Highlights

Universal Interface: Designed to mate seamlessly with industry‑standard 15 kV polymer and porcelain insulators—no special adapters needed.
40 kN Tensile Capacity: The hot‑dip galvanized ASTM A36 steel body withstands up to 40 kN of axial load, verified through factory pull‑tests that exceed IEC 61952 and ANSI C135.2 requirements.
Precision Fit: Machined at ±0.1 mm tolerance, the tongue seats perfectly in the clevis, eliminating micro‑movement and minimizing stress concentrations that can lead to hardware fatigue.
Corrosion Defense: Zinc coating to ISO 1461 standards ensures less than 1% mass loss after 1,000 hours of salt‑spray testing—critical for coastal or industrial installations.

Technical Overview

Parameter	Specification
Voltage Rating	15 kV
Tensile Rating	≥ 40 kN
Material	ASTM A36 steel, hot‑dip galvanized
Dimensional Tolerance	±0.1 mm
Certifications	IEC 61952

Why It Matters

Enhanced Reliability: A rigid connection reduces insulator movement, limiting the risk of wear at link points and extending service life.
Faster Installation: Standardized design and lightweight construction (≈ 2.3 kg per set) let crews complete dead‑end terminations up to 20% quicker.
Lower Lifecycle Cost: Robust materials and strict QA (100% pull‑test, magnetic particle inspection) mean fewer replacements and less maintenance downtime.