Dead end Y polymer insulator

The Dead End Y Polymer Insulator is designed for high-voltage transmission and distribution systems. Its advanced silicone rubber housing provides superior hydrophobicity, UV resistance, and pollution performance. Lightweight, corrosion-resistant, and maintenance-free, it ensures reliable operation under extreme conditions.

Rated Voltage: 33 kV
Mechanical Load: 120 kN
Material: Silicone Rubber + FRP Core
Application: Dead-end connections in overhead lines

Description

What It Is & Where It Fits

A Dead‑End “Y” Polymer Insulator anchors the end of an overhead conductor run. Its Y‑shaped profile locks the insulator string in place and transfers tensile loads from the conductor into the tower arm or cross‑arm, preventing conductor sag and sway.

Key Engineering Features

Advanced Silicone Housing
- Hydrophobic Surface: Water beads off, preventing leakage paths and flashovers in polluted or coastal environments.
- UV‑Stabilized: Retains elasticity and electrical strength after prolonged sun exposure.
High‑Strength Fiberglass Core
- 70 kN Tensile Rating: Certified to handle heavy conductor tensions, ice loading, and wind forces with a safety margin.
- Sealed End‑Fittings: Integral molding bonds polymer housing directly to end fittings—no exposed metal-to-polymer gaps to corrode.
Y‑Shaped Geometry
- Optimized Load Distribution: The dual‑arm design channels force evenly into two points on the tower arm, reducing localized stress.
- Compact Footprint: Fits neatly under cross‑arms with minimal overhang, ideal for tight‑clearance substation bays.

Technical Snapshot

Parameter	Specification
Voltage Class	15 – 35 kV
Minimum Breaking Load (MBL)	≥ 70 kN
Housing Material	Silicone rubber, UV‑resistant
Core Rod Material	E‑glass reinforced epoxy resin
End Fittings	Hot‑dip galvanized carbon steel
Leakage Distance	550 – 650 mm (depending on model)
Standard Compliance	IEC 61109

Why It Matters for Your Network

Long‑Term Reliability
The sealed polymer-to‑metal bond prevents moisture ingress and corrosion—common failure modes in porcelain units.
Reduced Maintenance
Self‑cleaning silicone sheds dirt and salt; inspection intervals can often be extended by 25–30%.
Faster, Safer Installation
Lighter weight (30–40% less than ceramic equivalents) means one‑person handling and quicker stringing, cutting labor costs.

Installation & Best Practices

Torque Control: Apply specified torque to clevis/bolt connections to maintain sealing pressure.
Alignment Check: Ensure the Y‑arms sit flush against the tower arm to avoid uneven loading.
Routine Visuals: Even with hydrophobic housing, schedule annual inspections to verify seal integrity and core‑rod exposure.

By combining the latest polymer technology with proven mechanical design, our Dead‑End Y Polymer Insulator delivers the durability and performance your grid demands—backed by years of field data and independent lab tests. Let me know if you’d like sample performance curves, case studies, or a quote!