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The performance of the120kn disc insulator ceramic insulator as follows:
| Type | U120BP | |
| Unit spacing | 146mm | |
| Normial diameter | 280mm | |
| Norminal creepage distance | 450mm | |
| Rated E&M failing load | 120Kn | |
| Routine tensile load | 60Kn | |
| Coupling size | 16A/16B | |
| Impace strength | 10N.m | |
| Power frequency withstand voltage | wet | 45Kv |
| dry | 80Kv | |
| Dry lightning impulse withstand voltage | 120Kv | |
| power frequency pumcture voltage | 120Kv | |
| Radio interferencne volltage | Test voltage to ground | 10Kv |
| Max.RIV at 1MHz | 50 | |
| Mass per 100pcs | 760Kg | |
| Applicable standard | GB,IEC,AS,BS | |
Anti-pollution 120kn disc insulator suspension porcelain insulator