Description
ANSI 52-3 Porcelain Disc Insulator Technical Specifications
| ANSI Class | 52-3 | 52-5 | 52-8 | 52-11 | |
| Coupling size | Type B | Type J | Type K | Type K | |
| Diameter(D) | mm | 254 | 254 | 254 | 280 |
| Spacing(H) | mm | 146 | 146 | 146 | 155 |
| Creepage distance | mm | 320 | 320 | 320 | 380 |
| Dry arcing distance | mm | 197 | 197 | 197 | 216 |
| Combined M&E strength | kN | 67 | 111 | 178 | 222 |
| Dry arcing distance | mm | 197 | 197 | 197 | 216 |
| Impact strength | N.m | 6.2 | 10 | 11.3 | 11.3 |
| Routine proof test load | kN | 33.3 | 55.5 | 89 | 111 |
| Time load test value | kN | 44.5 | 67 | 107 | 134 |
| Maximum working load | kN | 33.3 | 55.5 | 89 | 111 |
| Low frequency dry flashover voltage | kV | 80 | 80 | 80 | 80 |
| Low frequency wet flashover voltage | kV | 50 | 50 | 50 | 50 |
| Critical impulse flashover voltage, positive | kV | 125 | 125 | 125 | 125 |
| Critical impulse flashover voltage, negative | kV | 130 | 130 | 130 | 130 |
| Low frequency puncture voltage | kV | 110 | 110 | 110 | 110 |
| Test voltage RMS to ground | kV | 10 | 10 | 10 | 10 |
| Maximum RIV at 1000kHz | μv | 50 | 50 | 50 | 50 |
| Net weight,approximate | kg | 5.0 | 5.3 | 7.8 | 9.7 |
