52-1 Leakage distance: 178mm Comebined M&E strength:44kv chanical impact strength :5.0N-m Time load test value 27kN Average flashover voltage: Power frequency: Dry:60kv Wet:30kv Critical impulse: Positive:100kv Negative:100kv Power frequency Puncture voltage:80kv Radio Influence voltage: Test voltage to ground:7.5kv MAX RIV at 1MHZ :50uv