IEC: 517 - 1975 (Amendment No.2 - 1982); High-voltage metal-enclosed switchgear for rated voltages of 72.5kV and above

IEC: 517 - 1975 (Amendment No.2 - 1982); High-voltage metal-enclosed switchgear for rated voltages of 72.5kV and above - Geneva IEC 1982 - 11p

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