Replacement: This part 2 of IEC 61558 applies to associated power transformers for switch mode power supplies, single-phase or polyphase, air-cooled: - separating transformers; - isolating transformers; - safety isolating transformers, having a rated supply voltage not exceeding 1000 V a.c. and a rated frequency of 500 Hz to 1 MHz, the rated output not exceeding: - 10 kVA for single-phase transformers; - 16 kVA for polyphase transformers. NOTE 1 - For higher frequencies, this standard may be used as a guide. The no-load output voltage or the rated output voltage do not exceed: - 1000 V a.c. or 1 415 V ripple-free d.c for separating transformers; - 500 V a.c. or 708 V ripple-free d.c for isolating transformers. NOTE 2 - For isolating transformers, the rated output voltage may be up to 1000 V a.c. or 1415 V ripple-free d.c. in accordance with the national wiring rules or designed for special purposes. - 50 V a.c. r.m.s, and/or 120 V ripple-free d.c for safety isolating transformers. This standard is applicable to dry type transformers. The windings may be encapsulated or non-encapsulated. NOTES 3 For transformers filled with liquid dielectric or pulverized material, such as sand, additional requirements are under consideration. 4 In locations where special environmental conditions prevail, particular requirements may be necessary in accordance with IEC 364-5-51. 5 For higher output no-load voltages, additional requirements are necessary but this section may be used as a guide.
IEC 61558-2-17-1997由国际电工委员会 IX-IEC 发布于 1997-02。
IEC 61558-2-17-1997 在中国标准分类中归属于: K41 变压器,在国际标准分类中归属于: 29.180 变压器、电抗器、电感器。
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