本指南涵盖了按照ANSI/IEEE C57制造的矿物油浸式电力变压器的一般建议。12.00-1980[lP，最大铭牌额定值超过100 MVA（三相）或33+MVA（单相）.此类变压器在额定负载下的平均绕组上升最大为65 DC，热点上升最大为80 DC。注:当本指南用于指南发布前购买的变压器时，应与制造商一起检查2.5和4.3的适用性。另见附录D

This guide covers general recommendations for loading mineral-oil-immersed power transformers manufactured in accordance with ANSI/IEEE C57.12.00-1980 [lP and having a maximum nameplate rating in excess of 100 MVA (three phase) or 33+ MVA (single phase). Such transformers have an average winding rise of 65 DC maximum and a hottestipot rise of 80 DC maximum at rated load. NOTE: When this guide is to be used for transformers purchased prior to publication of the guide, the applicability of 2.5 and 4.3 should be checked with the manufacturer. Also see Appendix D