Station Post Insulator
Support Insulator,Engineered for the Grid
A critical component for insulation and mechanical support of live parts in outdoor substations — built to IEC 60273 / 60168 and ANSI C29.8, from 10kV to 500kV.
Post Insulator for Substation & Transmission Support
Post Insulator (also known as Support Insulator or Outdoor Solid Core Post Insulator) is a critical component in high-voltage electrical systems, designed for both insulation and mechanical support of live parts in outdoor substations.
Complete Range by Standard & Voltage Class
IEC Support Insulators per IEC 60273 / IEC 60168, from 10kV to 500kV with BIL up to 1800kV. ANSI series per ANSI C29.8 for North American grids.
Key Technical Advantages
Wide Voltage Range
Operational ratings from 10kV to 500kV with BIL withstand up to 1800kV for every grid class.
High Mechanical Strength
4kN – 30kN cantilever load capacity engineered for demanding substation installations.
Advanced Material
C130-grade porcelain with higher strength and lighter weight for long service life.
Anti-Pollution Design
Large creepage distance options for high-pollution and coastal environments.
Optimized Design Features
- ✓Full product line covering TR205 to TR391 series, 15+ standard types
- ✓Porcelain insulating body paired with cast iron fittings for durability
- ✓Compliant with IEC & ANSI, customizable to GOST, Mexican & South African standards
- ✓Operates reliably from -50°C to +40°C; suitable up to 4,000m altitude
- ✓Corrosion-resistant composite materials for coastal / harsh environments
Industry Applications
- ✓Substation bus supports & switchgear mounting systems
- ✓Transformer bushing connections
- ✓Overhead transmission line insulation & support
- ✓Renewable energy grid interfaces
- ✓Indoor and outdoor switchyards across 50+ countries
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Get a Custom Quote in 24 Hours
Send us your specifications — voltage class, BIL, drawings or standards — our engineering team will respond within one business day with pricing and technical recommendations.
- Direct communication with engineers, not sales reps
- Free technical consultation & sample support
- FOB / CIF / DDP terms — we handle the logistics