Post Type Insulator parameters
|
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 (Wet) (kV) |
Lightning Impulse Withstand Voltage (kV) |
| 69 | 676±15 | 517 | 1453 | 12 | 6.2 | 175 | 370 |
| Item | Requirement | Measured Valued |
| Visual examination | Fuchsine,grey or white, no obvious mechanical admixture. Vulcanized sillion rubber with dense and smooth cutting surface. |
Ok |
| Hardness (shore A) | ≮50 | 65~70 |
| Tensile strength (Map) | ≮4 | 4~6 |
| Failure elongation (%) | ≮150 | ≮180 |
| Tearing strength (kN/m) | ≮10 (right angle sample) | 12~15 |
| Volume resistivity (Ω.m) | 1X1012 | 3~8X1012 |
| Puncture strength (kV/mm) | Alternating current ≮22 | ≮30 |
| Tracking and erosion | TMA4.5,erosion depth≯2.5mm | TMA4.5, erosion depth <0.8mm |
| Flammability (Grade) | FV-0 | FV-0 |
raw materials
| End Fittings | Core | Sheds and Housing |
| Hot dip galvanized cast iron or cast steel | Epoxy & Glass fiber (ECR is available) |
HTV Silicone Rubber |
| Min. thickness of the galvanization: 86μm | Diameter(mm): Φ38, Φ40, Φ55, Φ70, Φ90, Φ120 | Color: Grey, Red |
Notes:
1. All post type insulator section lengths are based on vertical & base or bolt end fittings.
2. Below 220kV electrical data shown for composite line post insulators without corona rings and mounted vertically. Wuhan Line Power recommends corona rings to be installed at 220kV and above.
3. Additional section lengths and creepage distances are available. Contact sales agency for details.
4. All dimensions, tolerances and tests are within allowable IEC standards or ANSI standards.
5. All dimensions are in millimeters(mm). If in inches and pounds, please specify.
6. We can design according to the end user's requirements.
Description
Post type insulator with flange and horizontal clamp is a high-quality insulator used in electrical power transmission and distribution systems. It is made from a combination of materials, typically glass fibers and resin, which provide exceptional electrical insulation properties while also being lightweight and durable.
This insulator is designed with a flange and horizontal clamp for easy installation and secure attachment to support structures. The flange provides additional mechanical strength and allows for easy adjustment of the insulator's position. The horizontal clamp ensures a secure connection between the insulator and the support structure, reducing the risk of damage or failure.
Composite insulator 66kv with flange and horizontal clamp is suitable for use in medium-voltage power systems, typically at 66kV. It offers superior performance in high-humidity and corrosive environments, making it an excellent choice for outdoor applications.
Overall, composite insulator 66kv with flange and horizontal clamp is a reliable and durable insulator that provides exceptional electrical insulation and mechanical strength for use in medium-voltage power systems.
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