Ceramic Post Insulators
0102030405
ANSI Porcelain Line Post Insulator 57-1 Series Post Porcelain Insulators
| Line post type porcelain insulators | ||||||
| ANSI Class | 57-1 | 57-2 | 57-3 | 57-4 | 57-5 | |
| Dimensions | ||||||
| Creepage distance | mm | 356 | 559 | 737 | 1015 | 1145 |
| Dry arcing distance | mm | 165 | 241 | 311 | 368 | 438 |
| Mechanical Values | ||||||
| Cantilever strength | kn | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 |
| Cantilever strength routine test | kn | 5 | 5 | 5 | 5 | 5 |
| Electrical Values | ||||||
| Type application voltage | kv | 25 | 35 | 45 | 55 | 66 |
| Low frequency dry flashover voltage | kv | 80 | 110 | 125 | 150 | 175 |
| Low frequency wet flashover voltage | kv | 60 | 85 | 100 | 125 | 150 |
| Critical impulse flashover voltage,positive | kv | 130 | 180 | 210 | 255 | 290 |
| Critical impulse flashover voltage,negative | kv | 155 | 205 | 260 | 340 | 380 |
| Radio influence Voltage Data | ||||||
| Test voltage RMS to ground | kv | 15 | 22 | 30 | 44 | 44 |
| Maximum RIV at 1000kHz | μv | 100 | 100 | 200 | 200 | 200 |
| Packing and Shipping Data | ||||||
| Net weight,approximate | kg | 5.2 | 9.0 | 11.0 | 16.0 | 18.0 |
FAQ
1. What's the payment term?
We accept TT, a 30% deposit, and a 70% balance before delivery.
2. How long is the production time?
Normally, it will take about 35-40 days for production.
3. What is the standard of the package?
For small capacity, we use carton, but for big capacity, we will use a strong wooden case for protection or double inner packs in a master carton.