| ANSI CLASS | ANSI 57-2L-1 | PIN POST | |
| Creepage distance mm | 559 | 520 | |
| Protected Creepage distance (mm) | 200 | 260 | |
| Dry arcing distance mm | 240 | 260 | |
| Cantilever strength kN | 12.3 | 12.5 | |
| Low frequency flashover voltage | Dry kV | 90 | 90 |
| Wet kV | 65 | 65 | |
| Impulse Withstand Voltage, KV | 150 | 150 | |
| Radio influence voltage data | Test voltage to ground kV | 22 | 22 |
| At 1000kHz Max.RIV μ V | 100 | 100 | |
| Net Weight, Each, Approx, Kg | 9.2 | 10 | |
1.Purpose:
1)ANSI line post insulators are used to support electrical conductors (such as overhead power lines) and isolate them from the supporting structure (such as a pole or tower).
2)They prevent electrical current from flowing through the supporting structure, ensuring safety and efficient power transmission.
2.Design and Features:
1)ANSI line post insulators are typically made of porcelain or composite materials (like silicone rubber).
2)They consist of a central rod (usually made of metal) and a series of insulating discs stacked along the rod.
3)The insulating discs provide creepage distance to prevent flashover due to pollution, moisture, or contaminants.
4)The top and bottom ends of the insulator have metal fittings (such as threaded studs or flanges) for attachment to the conductor and supporting structure.
3.Applications:
1)These insulators are commonly used in distribution lines, substation equipment, and transformer stations.
2)They can withstand high mechanical loads and are suitable for both vertical and horizontal installations.
4.Voltage Ratings:
1)ANSI line post insulators are available in various voltage ratings, such as 15 kV, 25 kV, and 35 kV.
2)The specific voltage rating depends on the application and system requirements.
