前言:这是CSA C802的第一版。5，非线性负载下干式变压器效率评估指南。CSA集团承认，本指南的制定部分得益于加拿大自然资源部、不列颠哥伦比亚省水电站、马尼托巴省水电站、魁北克水电站、加拿大电力协会、新斯科舍省能源部和能效一号的财政支持。范围:1.1本指南适用于承受高达49次谐波电流的三相干式变压器。1.2本指南涵盖变压器、独立装置或更大组件的组件、60 Hz、ANN、额定值15至500 kVA、最大绕组电压为1.2 kV的三相双绕组低压配电变压器。1.3本指南涵盖的原则可适用于本指南未涵盖的其他变压器，并适当考虑任何特殊情况或应用。 1.4本指南不包含任何要求。在本指南中，“宜”用于表示建议或建议，而“可”用于表示选项或指南范围内允许的选项。

Preface:This is the first edition of CSA C802.5,Guideline for evaluating the efficiency of dry-type transformers under non-linear loading.CSA Group acknowledges that the development of this Guideline was made possible, in part, by the financial support of Natural Resources Canada, BC Hydro, Manitoba Hydro, Hydro Québec, Canadian Electricity Association, Nova Scotia Department of Energy, and Efficiency One.Scope:1.1This Guideline applies to three-phase dry-type transformers subjected to harmonics current up to the 49th harmonic.1.2This Guideline covers transformers, self-contained units or components of larger assemblies, 60 Hz, ANN, rated 15 to 500 kVA three-phase, two winding low voltage distribution transformers with maximum winding voltage of 1.2 kV.1.3The principles covered in this Guideline may be applied to other transformers, not covered in this Guideline, with due consideration of any special situation or application.1.4This Guideline contains no requirements. In this Guideline, "should" is used to express a recommendation or that which is advised and "may" is used to express an option or that which is permissible within the limits of the Guideline.