NF C52-112-3:1995
最高电压不超过 36 kV 的设备用 50 hz、50 至 500 kv 三相油浸配电变压器.第3部分:最高电压等于 36 kV 的设备用变压器的补充要求
Three-phase oil immersed distribution transformers, 50 hz, from 50 to 2 500 kv, with highest voltage for equipment not exceeding 36 kv. Part 3 : supplementary requirements for transformers with highest voltage for equipment equal to 36 kv.