DS DS/EN 61466-1
DS DSEN 61466-1 1997-OCT-22 Composte strng nsulator unts for overhead lnes wth a nomnal voltage greater than 1 kV - Part 1 Standard strength classes and end fttngs
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This part of IEC 1466 is applicable to composite string insulator units for a.c. overhead lines with a nominal voltage greater than 1000 V and a frequency not greater than 100 Hz. It also applies to insulators of similar design used in sub-stations or on electric traction lines.