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LXP-550
| Current/General/IEC designation | U550B/240 |
| Jinlihua designation | LXP-550 (530) |
| Diameter D ( mm ) | 380 |
| Spacing H ( mm ) | 240 |
| Creepage L ( mm ) | 600 |
| Socket soupling ( mm ) | 32 |
| Mechanical failing load ( kN ) | 550 (530) |
| Mechanical routine test ( kN ) | 275 (265) |
| Wet power frequency withstand voltage ( kV ) | 55 |
| Dry lightning impulse withstand voltage ( kV ) | 140 |
| Impulse puncture voltage ( P.U ) | 2.8 |
| Power frequency puncture voltage ( kV ) | * 130 |
| Radio interference voltage ( µV ) | 50 |
| Corona visual test ( kV ) | 18/22 |
| Power frequency electric arc voltage | 0.12s/20kA |
| Net weight per unit ( kg ) | 21.5 |
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