| IEC Standard insulators | U210BP/170 | U210BP/155 |
| Designation | LXWY3-210 | LXWY4-210 |
| ( mm ) Diameter D | 320 | 320 |
| ( mm ) Spacing H | 170 | 155 |
| ( mm ) Creepage L | 550 | 550 |
| ( mm ) Ball and Socket soupling | 20 | 20 |
| ( kN ) Mechanical failing load | 210 | 210 |
| ( kV ) Wet power frequency withstand voltage | 200KV/55KV | 200KV/55KV |
| ( kV ) Dry lightning impulse withstand voltage | 520KV/140KV | 520KV/140KV |
| ( P.U ) Impulse puncture voltage | 2.8p.u | 2.8p.u |
| ( kV ) Power frequency puncture voltage | 130KV | 130KV |
| ( µV ) Rodio influence voltage | 50uv | 50uv |
| ( kV ) Corona visual test | 18KV/22KV | 18KV/22KV |
| Power frequency electric arc voltage | 0.12s/20kA | 0.12s/20kA |
| ( kg ) Net weight per unit | 9.2KG | 9.0KG |