138kV Horizontal Composite Post Line Insulator
138kV System Voltage Level
Belongs to high-voltage transmission lines
Insulator Installation Direction
Horizontal installation
Generally used for: Line corners, lateral conductor support, compact tower designs, Composite (Silicone Rubber)
Insulation Material
Outer layer: Silicone rubber (anti-flashover, rainproof)
Inner core: Epoxy fiberglass rod
Features: Lightweight, significantly lower than porcelain and glass insulators.
Strong anti-flashover capability; Relatively low maintenance cost. Post Line Insulator
Function Type: "Post" = Post type
Used to:
Support conductors + Maintain electrical insulation
Different from "Suspension Insulator":
Post = Rigid support
Suspension = Suspended and stressed
Its Actual Function:
Used on transmission lines:
Support conductors
Bear mechanical forces (tension/wind force)
Provide insulation isolation
Horizontal composite post insulators are mainly used in high-voltage transmission and substation systems where horizontal arrangement and mechanical force bearing are required. They serve both to support conductors and to provide insulation.
I. Main Application Scenarios
High-Voltage Transmission Lines (Most Common)
Used for:
Line angle towers (towers with large angles), tension section terminals, conductor transposition locations
Functions:
Horizontal support for conductors
Bear conductor tension + wind loads
Provide phase-to-phase insulation distance
Compact Transmission Lines (Urban/Corridor)
Used for:
Busbar support
Disconnect switch support
GIS/AIS external connection support
Functions:
Fix conductor position
Maintain safe insulation distance
Tension Structures (Lower Mechanical Stress Locations)
Used for:
Conductor tension concentration points
Large-span (river, valley) lines
High-wind areas
Power plants and industrial power systems
Power plant output lines
Large industrial park power distribution
Our factory & quipment
Customized Size Available
Customized type Available
FAQ
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