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22kV pin insulator is manufactured, tested and designed and delivery in accordance with 22kV pin insulators specification. The insulators shall be porcelain / composite type pin insulators
IEC pin insulator specification
The 22kV pin insulator specification shall require that bidder must be an indigenous manufacturer and supplier of porcelain/composite type insulators of ratings 33 kV or must have developed proven in house technology and manufacturing process for porcelain/composite type insulators of above rating or possess technical collaboration/association with a manufacturer of porcelain type insulators of ratings 33 kV or above.
22kV pin insulator used in service conditions:
| Maximum ambient temperature, ℃ | 50 |
| Minimum ambient temperature, ℃ | 3.5 |
| Relative humidity, % | 10 to 100 |
| Maximum annual rainfall, mm | 1450 |
| Maximum wind pressure, kg/m sq. | 150 |
| Maximum wind velocity, km/h | 45 |
| Maximum altitude above mean sea level, m | 1000 |
| Isoceraunic level, (days/year) | 50 |
| Seismic level (horizontal acceleration), g | 0.3 |
22kV pin insulator shall be tested by insulator manufacturers in accordance the 22kV pin insulator specification or international standards.
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Orient Power is a pin insulator manufacturer of porcelain pin type insulator and composite pin insulators.