Porcelain Post Insulator for High Voltage (ANSI57-2) , Ceramic Insulator
Porcelain Post Insulator for High Voltage (ANSI57-2) , Ceramic Insulator image
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Quick Details
Product Details
1.Porcelain material
2.ANSI,DIN,AS,BS,SA
| ANSI Class | 57-1 | 57-2 | 57-3 | 57-4 | 57-5 | |
| Creepage Distance,mm | 356 | 559 | 737 | 1015 | 1145 | |
| Dry Arcing Distance,mm | 165 | 241 | 311 | 368 | 438 | |
| Cantilever Strength,kN | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | |
| Low Frequency Flashover Voltage |
Dry,Kv | 80 | 110 | 125 | 150 | 175 |
| Wet,Kv | 60 | 85 | 100 | 125 | 150 | |
| Critical Impulse Flashover Voltage |
Pos.,kV | 130 | 180 | 210 | 255 | 290 |
| Neg.,kV | 155 | 205 | 260 | 340 | 380 | |
| Radio Influence Voltage Data |
Test Voltage to Ground,kV | 15 | 22 | 30 | 44 | 44 |
| Max.RIV at 1000 KHz,uV | 100 | 100 | 200 | 200 | 200 | |
| Net Weight,Each,Approx.,kg | 5.2 | 9 | 11 | 16 | 23 | |
| ANSI Class | 57-2 | ||
| Usual line voltage/kV | 35 | ||
| Height" A" /in(mm) | 12 (305) |
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| Diameter " B " /in(mm) | 5-3/4 (146) |
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| Diameter " C " /in(mm) | 4 (102) |
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| Thread " D " /in(mm) | 3/4-10UNC | ||
| Min. leakage distance/in(mm) | 22 (559) |
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| Dry arcing distance/in(mm) | 9-1/2 (241) |
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| Cantilever strength/lb(kN) | 2800 (12.5) |
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| Average flashover voltage |
Low Frequency | Dry/kV | 110 |
| Wet/kV | 85 | ||
| Critical Impulse | Pos. /kV | 180 | |
| Neg. /kV | 205 | ||
| Withstand voltage |
Low frequency | Dry/kV | 90 |
| Wet/kV | 65 | ||
| Impulse/kV | 150 | ||
| Radio influence voltage data |
Test voltage/kV | 22 | |
| Max. RIV at 1,000kHz/uV |
100 | ||
| Net weight/lb(kg) | 17 (7.7) |
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