ANSI Class | 57-11 | 57-12 | 57-13 | 57-14 | 57-15 | |
Creepage distance (mm) | 356 | 559 | 737 | 1015 | 1145 | |
Dry arcing distance (mm) | 165 | 241 | 311 | 368 | 438 | |
Cantilever strength (kN) | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | |
Low frequency flashover (kV) | Dry (kV) | 80 | 110 | 125 | 150 | 175 |
Wet(kV) | 60 | 85 | 100 | 125 | 150 | |
Critical impulse flashover | Positive (kV) | 130 | 180 | 210 | 255 | 290 |
Negative (kV) | 155 | 205 | 260 | 340 | 380 | |
Radio influence voltage | Test voltage to ground (kV) | 15 | 22 | 30 | 44 | 44 |
Maximum RIV at 1000kHz (uV) | 100 | 100 | 200 | 200 | 200 | |
Net weight, Each, Approx (kg) | 6.8 | 10 | 11.8 | 15.9 | 18.6 | |
Nos. in standard package (Nos.) | 6 | 3 | 3 | 2 | 2 |