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1.High reliability through accumulated technology
2.Excellent long-term performance
As the name suggests, the pin type insulator is mounted on a pin on the cross-arm on the pole. There is a groove on the upper end of the insulator. The conductor passes through this groove and is tied to the insulator with annealed wire of the same material as the conductor. Pin type insulators are used for transmission and distribution of electric power at voltages up to 33 kV. Beyond operating voltage of 33 kV, the pin type insulators become too bulky and hence uneconomical.
| ANSI Class | Creepage Distance (inch) (mm) |
Dry Arcing Distance (inch) (mm) |
Cantilever Strength (kN) (lb) |
Flashover voltage(kV) | Power Frequency Puncture Voltage (kV) |
RIV Data | Weight (kg) |
||||
| Power frequency | Impulse | Test to ground (kV) |
Max.RIV at 1MHz (μV) |
||||||||
| Dry | Wet | Pos | Neg | ||||||||
| 20455 | 13 (330) | 7 (178) | 11 (2500) | 95 | 60 | 150 | 190 | 130 | 15 | 100 | 3.8 |
| 20486 | 17 (432) | 8 1/4 (210) | 13 (3000) | 110 | 70 | 175 | 225 | 145 | 22 | 100 | 5.5 |
| 20515 | 21 (533) | 9 1/2 (241) | 13 (3000) | 125 | 80 | 200 | 265 | 165 | 30 | 200 | 7 |
| 20546 | 27 (686) | 11 1/4 (286) | 13 (3000) | 140 | 95 | 225 | 310 | 185 | 30 | 200 | 11.1 |
| 20576 | 34 (864) | 14 (356) | 13 (3000) | 175 | 125 | 270 | 340 | 225 | 44 | 200 | 13.5 |
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