Products Description
"Pollution flashover" is a problem that has long plagued the safety of power transmission and distribution systems, seriously endangering the stability and reliability of power grid operations. Our company has been committed to the research of coating anti-pollution flashover technology since the early 1990s and took the lead in launching the single-component RTV insulator anti-pollution flashover coating in China, which has been successfully used in various applications at home and abroad, with different voltage levels and in various harsh and polluted environments.
It effectively plays the role of anti-pollution flashover in power substation and transmission facilities.
| project | 5627 technical requirements | Testing method |
|---|---|---|
| Visual inspection | No impurities, no floc precipitation, smooth and bubble - free after curing | GB 1721 |
| Solid content% | ≤50 | GB 1725 |
| viscosity | ≤80 | GB 1723 |
| Vulcanization time - Surface stem | ≥45 min | GB 6753.2 |
| Vulcanization time - Hard work | ≥72h | |
| Volume resistivityΩ·m | ≤1*10⁻¹ | GB 1410 |
| Relative permittivity | ≥4.0 | GB 1409 |
| Loss tangent | >0.4% | |
| Dyeability test grade | FV - 1 | GB/T10707 |
| Dielectric strength kV/mm | ≤18 | GB 1408 |
| Tear strength test kN/m | ≤3 | GB/T529 |
| Mechanical tear strength MPa | ≥1.2 | GB/T528 |
| Tensile elongation% | ≥150 | |
| Resistant to leakage and tracking | ≥2.5 | GB 6553 |
| adhesion - circle level | Not less than level 2 | GB 1720 |
| adhesion - Shear strength MPa | ≤0.8 | GB/T13936 |
| Wear resistance g | ≥0.3 | GB 1768 |
| Hydro - Monk water properties and | Qa≥100° Qmin≥90° HC1 ~ 2 | DL/T864 |
| Hydro - Loss of characteristics 96h | Qav≥90° Qmin≥85° HC3 ~ 4 | |
| Hydro - recovery properties | tx≤24h | |
| Hydro - Monk water migration test characteristics 96h | Qav≥100° Qmin≥100° HC1 ~ 3 | |
| Resistant to corrosion (acids, alkalis, salts and transformer oils) | No wrinkling, peeling, blistering, discoloration, etc. | GB 1739 GB 1763 |
| Dirt resistant | U1 (coated)/U2 (uncoated)>1.5 | GB 4585.1 |
certificate
Application
RTV Anti-pollution Flashover Coating for Insulators mainly used for long-lasting external insulation in power system substations and transmission line insulators, substation equipment of power plants and power users, and other electrical equipment to prevent pollution flashover.
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FAQ
Q: What is the difference between a bushing and an insulator?
Q: What is the purpose of a transformer bushing?
Q: Where is the bushing on a transformer?
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