| U70 146/320 |
U160
146/400 |
|
| ( mm ) Diameter D | 255 | 280 |
| ( mm ) Spacing H | 146 | 146 |
| ( mm ) Creepage L | 320 | 400 |
| ( mm ) Socket soupling | ||
| ( kN ) Specified mechanical load | 70KN | 160KN |
| ( kN ) routine test load | 35KN | 80KN |
| ( kV ) Wet power frequency withstand voltage | 40 | 45 |
| ( kV ) Dry lightning impulse withstand voltage | 100 | 110 |
| ( P.U ) Impulse puncture voltage | 2.8 | 2.8 |
| ( kV ) Power frequency puncture voltage | 130 | 130 |
| ( µV ) Radio influence voltage | 50 | 50 |
| ( kV ) Corona visual test | 18/22 | 18/22 |
| Power frequency electric arc voltage | 0.12s/20kA | 0.12s/20kA |
| Applied Standard | IEC120 | IEC120 |