NFC 52 113:1987被替代
Three-phase Two-winding Immersed Transformers (copper Windings) For 50 Hz, 50 To 3150 Kva, High Voltage 1.1 Kv To 36 Kv, Low Voltage 231 V To 1.1 Kv
出版：Association Francaise de Normalisation
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