Line Post Type-Porcelain Insulators Type 57-4

TIS.2623 Part 7(1)-2564 / ANSI/NEMA C29.7-2015 TYPE / ANSI CLASS 57-4
DIMENSIONS
Leakage distance, minimum, mm 1016
Dry arcing distance, minimum, mm 368
MECHANICAL VALUES
Cantilever strength, kN 12.5
Cantilever proof load, kN 5
ELECTRICAL VALUES
Low-frequency dry flashover, kV 140
Low-frequency wet flashover, kV 110
Critical- impulse flashover, positive, kV 230
RADIO INFLUENCE VOLTAGE DATA
Low-frequency test voltage, rms to ground, kV 44
Maximum RIV at 1000 kHz, microvolts 200
Colour of insulator BROWN