69kV Horizontal Line Post Insulator (Polymer Type) – With Aluminum Gain Base

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Designed for overhead transmission systems, the 69kV horizontal line post insulator is a durable polymer line post insulator.
It is made up of hot-dip galvanized steel end fittings, an excellent silicone rubber housing, and a bearing solid fiberglass core rod. In addition to being lightweight and simple to install, the design provides excellent mechanical and electrical performance.

This polymer-type insulator is excellent for applications needing high stability and long-term reliability because it is specifically designed to handle cantilever, tensile, and compressive loads.

Technical Description

Core Rod Diameter	70 mm solid fiberglass core
Structure	silicone rubber housing, end fittings, and a cylindrical insulating core
End Fittings	Hot-dip galvanized cast or forged steel
Base Type	Aluminum gain base
Orientation	Horizontal clamptop design, standard leak distance
Application	69 kV transmission lines installed on the cross-arms of poles or towers

Strong attachment on steel or wood cross-arms is ensured by the Aluminum Gain Base, which provides precise position and durable mechanical support.

69kV222-950-20180303-ZJ ZD1-70-21

Composite Line Post -

High-voltage transmission lines are suitable for dirty areas

Color: red, gray, blue, yellow according to customer requirements

Implementation standards;IEC 61109 GB/T 19519-2014

Different end fittings for Composite horizontal line post insulator

1. Horizontal Trunnion

2. Drop Tongue

3. Flange

4. Flat Base

5. Gain Base / Round Base (Suitable for different diameter of pole)

Rigid flat base

Rigid gain base

More information

Typical Line Voltage (kV)	Section Length (mm)	Dry Arcing Distance (mm)	Leakage Distance (mm)	Specified Cantilever Load (SCL, kN)	Max. Design Cantilever Load (MDCL, kN)	1min. Power Frequency Withstand Voltage (Dry/Wet) (kV)	Lightning Impulse Withstand Voltage (kV)
69	950±30	717	2030	22.2	11.1	205/185	410
115	1090±30	870	2450	18	9	260/240	445
132	1274±30	1042	3202	17.5	7.4	325/275	560
145	1435±30	1210	3720	12	6	325/275	650
161	2130±30	1920	5800	9	4.8	504/464	1050
220	2926±40	2660	8680	6	3	466/420	1050
230* (core ±90mm)	2616±30	2280	7730	12	6.3	684/578	1131