Energy & Environment
Electric Post Insulators
Certifications
ANSI C29.7
Description
This product is a post insulator for power transmission systems, made of porcelain, glass, or composite materials, with high mechanical strength and electrical performance. Suitable for high-voltage transmission lines, compliant with ANSI, voltage range 1kV~220kV, mechanical failing load 8kN~16kN.
Specifications
| Type | ANSI 57-2 electric post insulators |
| Material | porcelain, glass, composite |
| Standard | ANSI C29.7 |
| Application | Overhead lines and transmission lines |
| Related type | 57-1,57-2,57-3,57-4,57-5,57-6 |
| Voltage Range | 1kV~220kV |
| Mechanical failing load | 8kN, 10kN, 12.5kN, 16kN and as per client's request |
| Bending Strength (Composite) | 10-60kN |
| Creepage Distance (57-1 S/L) | 356 mm |
| Creepage Distance (57-2 S/L) | 559 mm |
| Creepage Distance (57-3 S/L) | 737 mm |
| Creepage Distance (57-4 S/L) | 1016 mm |
| Creepage Distance (57-5 S/L) | 1143 mm |
| Tensile Strength (Composite) | 50-300kN |
| Cantilever Strength (57-1 S/L) | 12.5 kN |
| Cantilever Strength (57-2 S/L) | 12.5 kN |
| Cantilever Strength (57-3 S/L) | 12.5 kN |
| Cantilever Strength (57-4 S/L) | 12.5 kN |
| Cantilever Strength (57-5 S/L) | 12.5 kN |
| Dry Arcing Distance (57-1 S/L) | 165 mm |
| Dry Arcing Distance (57-2 S/L) | 241 mm |
| Dry Arcing Distance (57-3 S/L) | 311 mm |
| Dry Arcing Distance (57-4 S/L) | 368 mm |
| Dry Arcing Distance (57-5 S/L) | 438 mm |
| Mechanical Strength (Porcelain/Glass) | 70-210kN |
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