33 KV Polymer Pin Insulator

Price 250.00 INR/ Piece

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MOQ : 100 Pieces

33 KV Polymer Pin Insulator Specification

Power Rating
High-voltage distribution class (breakdown voltage threshold 120 KV )

Product Type
Pin Polymer Insulator

Welding Standard
Compression crimping (no welding to core; metal casting per IS/ASTM standards)

Capacity
50 Kg

Application
Overhead 33KV distribution lines, substations, and polluted/coastal zones

Galvanization Standard
Hot-dip galvanized to IS 2629/ IS 2633 or ASTM A153

Out Coating
Molded high-voltage grade HTV silicone rubber housing

Standard
IEC 61109, IS 14254, IS 15487, IEC 60815, and IS 13134

Shape
Concentric, alternating weather sheds molded over a central cylindrical core

Usage & Applications
Overhead 33KV distribution lines, substations, and polluted/coastal zones

Surface Treatment
UV-stabilized, hydrophobic, smooth, semi-gloss tracking-resistant finish

Rated Voltage
33 KV Ampere (A)

Height
320 Millimeter (mm)

Cable Type
Bare overhead ACSR/AAAC conductors or covered distribution line cables

Operating Temperature
-40 TO + 50 Celsius (oC)

Voltage
33 KV Ampere (amp)

Display Type
None (Passive device with indelible physical markings stamped on metal fittings)

Design
Long-rod composite design with alternating sheds, SGCI end-caps, and pin-mount

Phase
Single-phase component; installed in three-phase distribution configurations

Frequency
50 Hertz (HZ)

Material
Core: Boron-free FRP rod; Housing: Silicone rubber; Fittings: Galvanized steel

Features
Lightweight, non-brittle, hydrophobic, UV-resistant, low-maintenance, high-strength

Thickness
5 Inch

Rated Current
200 Ampere (amp)

Conductor
Aluminum Conductor Steel Reinforced (ACSR) up to $200 MM cross-section

Color
Light Grey or Red / Maroon

Warranty
24 Months from commissioning or 36 months from supply (whichever is earlier)

33 KV Polymer Pin Insulator Trade Information

Minimum Order Quantity
100 Pieces

Delivery Time
2 Days

About 33 KV Polymer Pin Insulator

The 33 KV polymer pin insulator is an advanced, multi-component electrical isolation device designed for primary distribution lines and sub-transmission systems. This product represents a significant technological shift from traditional porcelain or glass insulators to high-performance polymer composites in high-voltage utility networks. The primary function of this pin insulator is to support overhead line conductors on pole-top crossarms during straight-line runs, maintaining critical electrical clearance and mechanical isolation under continuous voltage stress Traditional overhead lines rely on rigid, heavy porcelain blocks to prevent phase-to-ground short circuits. However, these ceramic structures are brittle, prone to cracking under dynamic loads, and require frequent cleaning to prevent flashovers in polluted environments. The composite pin insulator resolves these limitations by using a lightweight, non-brittle, multi-layered design.

The structural core of the insulator is a high-strength fiberglass rod that handles mechanical loads, while the outer housing is made of a hydrophobic silicone rubber polymer that provides electrical insulation. This composite structure is highly resilient against physical impacts and environmental stress, making it a reliable solution for modern, low-maintenance high-voltage distribution networks.

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