| cat.no | A1066 | A1067 | A1068 | A1069 | A1070 |
| fig | 1 | 1 | 2 | 2 | 3 |
| class ANSI | 56-1 | 56-2 | 56-3 | 56-4 | 56-5 |
| main dimensions | H | 146 | 165 | 191 | 241 | 318 |
| h | 50.8 | 50.8 | 50.8 | 50.8 | 63.5 |
| D | 191 | 228 | 267 | 305 | 343 |
| d | 34.9 | 34.9 | 34.9 | 34.9 | 34.9 |
| d1 | 19 | 19 | 19 | 19 | 19 |
| R2 | 14 | 14 | 14 | 14 | 14 |
| creepage distance(mm) | 23 | 23 | 35 | 46 | 69 |
| power-frequency puncture voltage(kv) | 330 | 430 | 533 | 685 | 865 |
| Average flashover voltage | power-frequency | dry | 95 | 110 | 125 | 140 | 175 |
| wet | 60 | 70 | 80 | 95 | 125 |
Critical-impulse
15x14 μs wave | positive | 150 | 175 | 200 | 225 | 270 |
| negative | 190 | 225 | 265 | 310 | 340 |
| Radio-influence-voltage data | test voltage to ground(kv) | 15 | 22 | 30 | 30 | 44 |
| maximum riv at 1000khz (μv) | 100 | 100 | 200 | 200 | 200 |
| Low-frequency puncrture voltage average(kv) | 130 | 145 | 165 | 186 | 225 |
| dry arcing distance(mm) | 178 | 210 | 241.3 | 285 | 356 |
| cantilever failing load(kn) | 1134 | 1360 | 1360 | 1360 | 1360 |
| weight(kb) | 3.7 | 5.3 | 7 | 10.8 | 13.5 |
