Power cables - Part 621: Medium voltage impregnated paper insulated distribution cables; German version HD 621 S1:1996 Parts 1, 2, 3C and 4C
German title
Starkstromkabel - Teil 621: Energieverteilungskabel mit getränkter Papierisolierung für Mittelspannung; Deutsche Fassung HD 621 S1:1996 Teile 1, 2, 3C und 4C
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