1.1 本试验方法包括由平轧磁性材料制成的叠层磁芯的几种交流磁性能的测定。 1.2 本试验方法包括通过电压和电流测量确定阻抗磁导率和激励功率以及通过瓦特计测量确定铁芯损耗的试验设备和程序。这些测试是在正弦通量条件下进行的。 1.3 该测试方法涵盖了基于尺寸和应用的两大类（1和2）芯的测试。 1.4 提供了在10 kg至15 kg【1.0 T至1.5 T】感应和50 Hz、60 Hz和400 Hz频率下运行的功率和控制尺寸磁芯（类别1）的测试。 1.5 提供了在100 G[0.01吨]或更低至10公斤[1.0吨]及以上，频率为50赫兹至60赫兹或以上，当适当的采购规范涵盖时。 1.6 本试验方法还包括上述铁芯类型在增量试验条件下（交流磁化叠加在直流磁化上）的铁芯损耗和交流阻抗磁导率的试验，以及在导致交流励磁电流过度失真或达到超过单个试验设备部件极限值的感应强度。 1.7 本试验方法应结合实际使用 A34/A34M 和术语 A340 详细信息取决于这些指定文件，在本试验方法中不再重复。 1.8 以常规（cgs-emu和英寸-磅）或SI单位陈述的值和方程应单独视为标准。在本标准中，SI单位显示在括号中。每个系统中陈述的值可能不完全等同；因此，每个系统应独立使用。合并两个系统的值可能导致不符合本标准。 1.9 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.10 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。======意义和用途====== 5.1 本试验方法用于评价由平轧磁性材料制成的叠层磁芯的交流磁性能。 5.2 该试验方法的重现性和重复性使得该试验方法适用于设计、规格验收、服务评价和研发。

1.1 This test method covers the determination of several ac magnetic properties of laminated cores made from flat-rolled magnetic materials. 1.2 This test method covers test equipment and procedures for the determination of impedance permeability and exciting power from voltage and current measurements, and core loss from wattmeter measurements. These tests are made under conditions of sinusoidal flux. 1.3 This test method covers tests for two general categories (1 and 2) of cores based on size and application. 1.4 Tests are provided for power and control size cores (Category 1) operating at inductions of 10 kG to 15 kG [1.0 T to 1.5 T] and at frequencies of 50 Hz, 60 Hz, and 400 Hz. 1.5 Procedures and tests are provided for coupling and matching type transformer cores (Category 2) over the range of inductions from 100 G [0.01 T] or lower to 10 kG [1.0 T] and above at 50 Hz to 60 Hz or above when covered by suitable procurement specifications. 1.6 This test method also covers tests for core loss and ac impedance permeability under incremental test conditions (ac magnetization superimposed on dc magnetization) for the above core types and at inductions up to those that cause the ac exciting current to become excessively distorted or reach values that exceed the limits of the individual test equipment components. 1.7 This test method shall be used in conjunction with Practice A34/A34M and Terminology A340 . It depends upon these designated documents for detailed information which will not be repeated in this test method. 1.8 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard. 1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method was developed for evaluating the ac magnetic properties of laminated cores made from flat-rolled magnetic materials. 5.2 The reproducibility and repeatability of this test method are such that this test method is suitable for design, specification acceptance, service evaluation, and research and development.