This European Standard specifies characteristics for composite insulators of electric traction overhead contact lines systems for railways, as defined in IEC 60913. Insulators specified in this standard are applied for electric traction supply voltages with a nominal voltage greater than 1000 V for a.c. or a nominal voltage greater than 1500 V for d.c.. Specific applications where high torsional loads can occur are outside the scope of this standard.
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